ZENEX Implant System is indicated for use in partially or fully edentulous mandibles and maxillae, in support of single or multiple unit restorations including; cemented retained, screw retained, or overdenture restorations, and final or temporary abutment support for fixed bridgework. It is intended for delayed loading. Wide Fixture System is intended to be used in the molar region
Device Story
ZENEX Implant System consists of titanium dental implant fixtures (ZENEX MULTI and ZENEX PLUS) and compatible abutments. Fixtures are surgically implanted into alveolar bone to support prosthetic teeth or dentures. Fixtures feature internal hex connections and SLA (sandblasted, large-grit, acid-etched) surface treatment to promote osseointegration. Abutments (cemented, angled, ball, multi, temporary, healing) and components (screws, caps) connect to fixtures to support crowns, bridges, or overdentures. Some abutments feature Titanium Nitride (TiN) coating. Used by dentists/oral surgeons in clinical settings. Output is a stable substructure for dental prosthetics, restoring patient masticatory function. Benefits include improved oral rehabilitation for edentulous patients.
Clinical Evidence
No clinical or animal data provided. Substantial equivalence supported by bench testing, including fatigue testing (ISO 14801), biocompatibility (ISO 10993), sterilization validation (ISO 11137, ISO 17665), and surface characterization (SEM, EDS).
Technological Characteristics
Materials: Pure Titanium Grade 4 (ASTM F67), Ti 6Al 4V ELI (ASTM F136), CoCrMo alloy. Surface: SLA (sandblasted/acid-etched) or TiN coating. Connection: Internal Hex. Sterilization: Gamma (fixtures/healing components) or user moist heat (abutments).
Indications for Use
Indicated for partially or fully edentulous mandibles and maxillae patients requiring single or multiple unit restorations (cemented, screw-retained, or overdenture) or fixed bridgework support. Intended for delayed loading. Wide Fixture System indicated for molar region.
Regulatory Classification
Identification
An endosseous dental implant is a prescription device made of a material such as titanium or titanium alloy that is intended to be surgically placed in the bone of the upper or lower jaw arches to provide support for prosthetic devices, such as artificial teeth, in order to restore a patient's chewing function.
Special Controls
*Classification.* (1) Class II (special controls). The device is classified as class II if it is a root-form endosseous dental implant. The root-form endosseous dental implant is characterized by four geometrically distinct types: Basket, screw, solid cylinder, and hollow cylinder. The guidance document entitled “Class II Special Controls Guidance Document: Root-Form Endosseous Dental Implants and Endosseous Dental Implant Abutments” will serve as the special control. (See § 872.1(e) for the availability of this guidance document.)(2)
*Classification.* Class II (special controls). The device is classified as class II if it is a blade-form endosseous dental implant. The special controls for this device are:(i) The design characteristics of the device must ensure that the geometry and material composition are consistent with the intended use;
(ii) Mechanical performance (fatigue) testing under simulated physiological conditions to demonstrate maximum load (endurance limit) when the device is subjected to compressive and shear loads;
(iii) Corrosion testing under simulated physiological conditions to demonstrate corrosion potential of each metal or alloy, couple potential for an assembled dissimilar metal implant system, and corrosion rate for an assembled dissimilar metal implant system;
(iv) The device must be demonstrated to be biocompatible;
(v) Sterility testing must demonstrate the sterility of the device;
(vi) Performance testing to evaluate the compatibility of the device in a magnetic resonance (MR) environment;
(vii) Labeling must include a clear description of the technological features, how the device should be used in patients, detailed surgical protocol and restoration procedures, relevant precautions and warnings based on the clinical use of the device, and qualifications and training requirements for device users including technicians and clinicians;
(viii) Patient labeling must contain a description of how the device works, how the device is placed, how the patient needs to care for the implant, possible adverse events and how to report any complications; and
(ix) Documented clinical experience must demonstrate safe and effective use and capture any adverse events observed during clinical use.
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Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health & Human Services logo on the left and the FDA text logo on the right. The text logo has the FDA acronym in a blue square, followed by the words "U.S. FOOD & DRUG ADMINISTRATION" in blue.
Izenimplant Co., Ltd. % Milly Milly Official Correspondent of Izenimplant Co., Ltd. KMC. Inc. Room no. 1709, 123, Digital-ro 26-gil, Guro-gu Seoul. 08390 REPUBLIC OF KOREA
Re: K211090
Trade/Device Name: ZENEX Implant System Regulation Number: 21 CFR 872.3640 Regulation Name: Endosseous Dental Implant Regulatory Class: Class II Product Code: DZE, NHA Dated: March 10, 2022 Received: March 14, 2022
Dear Milly Milly:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
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Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely.
Andrew I. Steen Assistant Director DHT1B: Division of Dental and ENT Devices OHT1: Office of Ophthalmic, Anesthesia, Respiratory, ENT and Dental Devices Office of Product Evaluation and Ouality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K211090
Device Name ZENEX Implant System
#### Indications for Use (Describe)
ZENEX Implant System is indicated for use in partially or fully edentulous mandibles and maxillae, in support of single or multiple unit restorations including; cemented retained, or overdenture restorations, and final or temporary abutment support for fixed bridgework. It is intended for delayed loading. Wide Fixture System is intended to be used in the molar region
| Type of Use (Select one or both, as applicable) | |
|----------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------|
| <span style="font-family: sans-serif;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D) | <span style="font-family: sans-serif;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) |
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Image /page/3/Picture/0 description: The image contains the logo for IZEN Implant. The word "IZEN" is in large, bold, black letters, with a teal triangle in the upper right corner of the "N". Below "IZEN", the word "IMPLANT" is written in smaller, gray letters with spaces between each letter.
### 510(k) Summary
## K211090
## Date: April 13, 2022
## 1. Applicant / Submission Sponsor
Izenimplant Co., Ltd. Address: 1, 2Dong, 26-32, Suworam 4-gil, Seotan-myeon, Pyeongtaek-si, Gyeonggi-do, 17703, Republic of Korea Tel : +82-31-662-0657 Fax : +82-31-662-0658
## 2. Submission Correspondent
Milly (RA Consultant, KMC, Inc.) Address: Room no. 1709, 123, Digital-ro 26-gil, Guro-gu, Seoul, 08390, Republic of Korea Tel: +82-70-8965-5554 Fax: +82-2-856-5904 Email: milly@kmcerti.com
## 3. Device Identification
- -Trade/Proprietary Name: ZENEX Implant System
- -Classification Name: Root-form endosseous implant
- -Common Name: Dental Implant System
- -Classification Regulation: 21CFR 872.3640
- -Product Code: DZE, NHA
- -Device Class: Class II
- -Review Panel: Dental
## 4. Predicate Devices
## 4.1 Primary Predicate
| No. | K Number | Manufacturer | Trade Name |
|-----|----------|--------------------------|-----------------------|
| 1 | K161604 | OSSTEM Implant Co., Ltd. | Osstem Implant System |
## 4.2 Reference Device
| No. | K Number | Manufacturer | Trade Name |
|-----|----------|-------------------------|------------------------|
| 1 | K182091 | OSSTEM Implant Co., Ltd | Osstem Abutment System |
| 2 | K181138 | Neobiotech Co., Ltd. | IS-III Active System |
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Image /page/4/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is in large, bold, black letters, with a teal triangle extending from the top right corner of the "N". Below "IZEN" is the word "IMPLANT" in smaller, gray letters. The logo is simple and modern, with a focus on the company name.
## 5. Device Description
ZENEX Implant System is consisted with ZENEX Fixtures (ZENEX MULTI Fixture and ZENEX PLUS Fixture) and Izenimplant Abutment System. The implant fixtures come in two unique systems, the I-System and the T-System, each with their own abutment compatibilities.
## 1) ZENEX Fixtures
This product is a dental implant which is put into the alveolar bone in order to support, or maintain the prosthetic tooth or denture when a patient's teeth are partially lost. To enhance the osseointegration with the alveolar bone, this titanium dental implant is treated with SLA surface.
As a dental implant which is put into the alveolar bone to support the dental prostheses such as the artificial teeth which are used to rehabilitate a patient's masticatory function, it is used as a substructure which is implanted into the human body.
This product is a dental implant fixture to be inserted into the bone and is intended to be used in partially or fully edentulous mandibles and maxillae, in support of single or multiple unit restorations. It is connected to the upper structure with Internal Hex fastening structure. In the surface treatment, machined surface was sanded with alumina (Al2O3) powder and acid (hydrochloric acid, sulfuric acid) etching process was applied to the surface to increase the contact surface with the bone.
ZENEX PLUS is a design that adds a micro-groove at the collar compared to ZENEX MULTI.
## 2) Izenimplant Abutment System
Izenimplant Abutment System is compatible with the ZENEX Fixtures (ZENEX MULTI Fixture, ZENEX PLUS Fixture). Izenimplant Abutment System is intended for use with a dental implant to provide support for prosthetic restorations such as crowns, bridges, or overdentures. Separate sets of abutments are presented for compatibility with each I-System and T-System. Some subject abutments undergo Titanium Nitride (TiN) coating.
Dental Abutment System is similar to other commercially available products based on the intended use, technology used, claims, material composition employed and performance characteristics.
Especially, the Izenimplant Abutment System is consisted following;
| Category | Item | Description |
|-----------|---------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Abutment | Cemented Abutment | It is an abutment for making cement and combination maintenance-type prosthetics by taking a fixture level impression.<br>It is an abutment for making cement and combination-retaining prosthesis by taking a fixture level impression. |
| Abutment | Angled Abutment<br>I-System – 15°/25° | It is an abutment for making cement and combination maintenance-type prosthetics by |
| | T-System – 17° | taking a fixture level impression. |
| | Ball Abutment | It is an abutment for making cement and combination-retaining prosthesis by taking a fixture level impression. |
| | Ball Abutment | It is an abutment for making cement and combination maintenance-type prosthetics by taking a fixture level impression |
| | Multi Abutment<br>(Multi Straight Abutment)<br>(Multi Angled Abutment, 17°/30°) | It is an abutment used when manufacturing screw retaining prosthesis in multiple cases. |
| | Temporary Abutment | Temporary Abutment is used by removing the healing abutment as an abutment for making temporary prostheses |
| | Healing Abutment | Healing is used during the healing period prior to restorations and maintain the shape of the gum. |
| | Cover Screw | Cover Screw is used during the healing period prior to restorations and maintain the shape of the gum |
| | Multi Ti Link Cylinder | It is an abutment for manufacturing combination maintenance type prosthesis by taking an abutment level impression. |
| | Multi Temporary Cylinder | This product is an abutment for casting.<br>Use temporarily |
| | Multi CCM Cast Cylinder | It is an abutment for manufacturing combination maintenance type prosthesis by taking an abutment level impression. |
| Component | Abutment Screw | It is used to fix the abutment to the fixture. |
| | Ball Abutment Component<br>(Cap, Retainer and O-ring) | It is a product that is inserted into the overdenture, and it is installed on the ball abutment to support the overdenture. |
| | Multi Angled Abutment Screw | It is used to fix the Multi Angled Abutment to the fixture. |
| | Multi Cylinder Screw | It is fixed to cylinder |
| | Multi Healing Cap | This product protects the Multi Abutments during healing phase |
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Image /page/5/Picture/0 description: The image shows the logo for IZEN Implant. The logo is composed of the word "IZEN" in a bold, sans-serif font, with the letters in black. To the right of the "N" is a teal triangle. Below the word "IZEN" is the word "IMPLANT" in a smaller, sans-serif font, with the letters in black.
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Image /page/6/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is in large, bold, black letters, with a teal triangle extending from the top right corner of the "N". Below "IZEN" is the word "IMPLANT" in smaller, gray letters. The logo is simple and modern, with a focus on the company name.
## 5. Indications for Use
ZENEX Implant System is indicated for use in partially or fully edentulous mandibles and maxillae, in support of single or multiple unit restorations including; cemented retained, screw retained, or overdenture restorations, and final or temporary abutment support for fixed bridgework. It is intended for delayed loading. Wide Fixture System is intended to be used in the molar region
## 6. Substantial Equivalence 6.1 Comparison Table
Comparison of the technical characteristics of the subject device and predicate devices is shown in the Table of Substantial Equivalence Below.
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Image /page/7/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is in large, bold, black letters. To the right of the "N" is a green triangle. Below the word "IZEN" is the word "IMPLANT" in smaller, gray letters.
### 6.1.1 Indications for use
The Indications for Use Statements are compared in the Indications for Use Statements of the Subject and Primary Predicate devices, including reference devices, are similar as support for dental restorations.
Although the subject device does not have products with are less than 3.75mm or products that are indicated for use in lateral incisor, the test results of bench test of the products demonstrated that this difference does not raise new safety or effectiveness concerns for the provided intended use.
| Subject Device | Primary Predicate Device | Secondary Predicate Device | Third Predicate Device |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (ZENEX Implant System) | (K161604) | (K182091) | (K181138) |
| ZENEX Implant System is indicated for<br>use in partially or fully edentulous<br>mandibles and maxillae, in support of<br>single or multiple unit restorations<br>including; cemented retained, screw<br>retained, or overdenture restorations, and<br>final or temporary abutment support for<br>fixed bridgework. It is intended for<br>delayed loading. Wide Fixture System is<br>intended to be used in the molar region. | The Osstem Implant System is indicated<br>for use in partially or fully edentulous<br>mandibles and maxillae, in support of<br>single or multiple units restorations<br>including; cemented retained, screw<br>retained, or overdenture restorations, and<br>final or temporary abutment support for<br>fixed bridgework. It is intended for<br>delayed loading. Ultra wide Fixture<br>System is intended to be used in the molar<br>region. Products with diameter of less than<br>3.25mm should be used exclusively for the<br>lateral incisor in the maxilla and a central<br>or lateral incisor in the mandible. | The Osstem Abutment System is<br>intended for use with a dental implant<br>to provide support for prosthetic<br>restorations such as crowns, bridges,<br>or overdentures. | The IS-III active System is indicated<br>for use in Halfly or fully edentulous<br>mandibles and maxillae, in support of<br>single or multiple-unit restorations<br>including; cemented retained, screw<br>retained, or overdenture restorations,<br>and terminal or intermediate Abutment<br>support for fixed bridgework. |
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Image /page/8/Picture/0 description: The image is a logo for IZEN Implant. The word "IZEN" is written in large, bold, black letters. Below the word "IZEN" is the word "IMPLANT" written in smaller, gray letters. The upper right corner of the "N" in "IZEN" has a teal triangle.
# 6.1.2 Technical
# 1) ZENEX Fixture
| Descriptive<br>Information | Subject Device | Primary Predicate Device |
|----------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Manufacturer | Izenimplant, Co., Ltd. | OSSTEM Implant Co., Ltd. |
| Product Name | ZENEX MULTI Fixture,<br>ZENEX PLUS Fixture | Osstem Implant System |
| 510(K) Number | - | K161604 |
| Product Code /<br>Regulation | DZE / 21CFR 872.3640 | DZE / 21CFR 872.3640 |
| Structure | - Internal Hex connected<br>- Submerged Fixture<br>- Straight/Taper body shape | - Internal Hex connected<br>- Submerged Fixture<br>- Straight/Taper body shape |
| Body Diameter and<br>Length (mm) | Mini<br>Ø 3.75 x L8.5, 10, 11.5, 13, 15<br><br>Regular<br>Ø 4.25 x L7, 8.5, 10, 11.5, 13, 15<br>Ø 4.6 x L7, 8.5, 10, 11.5, 13, 15<br><br>Wide<br>Ø 5.05 x 7, 8.5, 10, 11.5, 13, 15<br>Ø 5.4 x 7, 8.5, 10, 11.5, 13,<br>Ø 5.9 x 7, 8.5, 10, 11.5, 13<br>Ø 6.75 x 7, 8.5, 10, 11.5, 13 | Ø 3.2 x L8.5, 10, 11.5, 13. 15<br><br>Ø 4.4 x L7, 8.5, 10, 11.5, 13, 15<br>Ø 4.8 x 7, 8.5, 10, 11.5, 13, 15<br><br>Ø 5.25 x 7, 8.5, 10, 11.5, 13, 15<br>Ø 6.2 x 7, 8.5, 10, 11.5, 13<br>Ø 7.1 x 7, 8.5, 10, 11.5, 13 |
| Material | Pure Titanium Grade 4<br>(ASTM F67) | Pure Titanium Grade 4<br>(ASTM F67) |
| Surface | Sandblasted and acid-etched | Sandblasted and acid-etched |
| Sterilization | Radiation | Radiation |
| Shelf Life | 5 years | 8 years |
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Image /page/9/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is written in large, bold, gray letters. Below "IZEN" is the word "IMPLANT" written in smaller, gray letters. The upper right corner of the "N" in "IZEN" is colored in a teal color.
# 2) Cemented Abutment
| - | | Subject Device | Predicate Device |
|-------------------|----------|---------------------------------------|---------------------------------------|
| Manufacturer | | Izenimplant Co., Ltd. | Neobiotech Co., Ltd. |
| Device Name | | ZENEX Implant System | IS-III active System |
| 510(k) Number | | - | K181138 |
| Classification | | Class II | Class II |
| Design | | Image: Design of ZENEX Implant System | Image: Design of IS-III active System |
| Connection Type | | Hex, Non-Hex | Hex, Non-Hex |
| Dimension | D(∅) | 4.5 ~ 6.5 | 4.0 ~ 7.0 |
| | G/H (mm) | 1.0 ~ 7.0 | 1.0 ~ 5.0 |
| | P/H (mm) | 4.0 ~ 7.0 | 4.0 ~ 7.0 |
| | Angle | 0° | 0° |
| Surface Treatment | | Partial TiN coated in upper | Partial TiN coated in upper |
| Sterilization | | Non-Sterile | Non-Sterile |
| Material | | Ti 6Al 4V ELI<br>(ASTM F136) | Ti 6Al 4V ELI<br>(ASTM F136) |
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Image /page/10/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is written in large, bold, black letters. Below the word "IZEN" is the word "IMPLANT" written in smaller, gray letters. The upper right corner of the "N" in IZEN is colored in a teal color.
# 3) Angled Abutment
| - | Subject Device | Predicate Device | |
|-------------------|------------------------------|------------------------------|-----------|
| Manufacturer | Izenimplant Co., Ltd. | Neobiotech Co., Ltd. | |
| Device Name | ZENEX Implant System | IS-III active System | |
| 510(k) Number | - | K181138 | |
| Classification | Class II | Class II | |
| Design | Image: Design of Izenimplant | Image: Design of Neobiotech | |
| Connection Type | Hex, Non-Hex | Hex, Non-Hex | |
| Dimension | D(\$\emptyset\$) | 4.5 ~ 5.7 | 4.5 ~ 6.0 |
| | G/H<br>(mm) | 2.0 ~ 4.0 | 2.0 ~ 4.0 |
| | P/H<br>(mm) | 7.0 | 7.5 ~ 8.0 |
| | Angle | 15° ~ 25° | 15° ~ 25° |
| Surface Treatment | Partial TiN coated in upper | Partial TiN coated in upper | |
| Sterilization | Non-Sterile | Non-Sterile | |
| Material | Ti 6Al 4V ELI<br>(ASTM F136) | Ti 6Al 4V ELI<br>(ASTM F136) | |
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Image /page/11/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is in large, bold, black letters. The word "IMPLANT" is in smaller, gray letters below the word "IZEN". The upper right corner of the "N" in "IZEN" has a teal triangle.
## 4) Ball Abutment
| - | | Subject Device | Predicate Device |
|-------------------|-------------------------|------------------------------|------------------------------|
| Manufacturer | | Izenimplant Co., Ltd. | Neobiotech Co., Ltd. |
| Device Name | | ZENEX Implant System | IS-III active System |
| 510(k) Number | | - | K181138 |
| Classification | | Class II | Class II |
| Design | | | |
| Connection Type | | Non-Hex (Screw Type) | Non-Hex (Screw Type) |
| Dimension | D(θ) | 3.5 | 3.5 |
| | Length<br>(mm) | 9.15 ~ 14.65 | 11.1 ~ 14.1 |
| | Head<br>Diameter<br>(θ) | 2.25 | 2.4 |
| | Head<br>Length<br>(mm) | 3.35 | 1.0 ~ 4.0 |
| | Angle | 0° | 0° |
| Surface Treatment | | Non-Coating | Non-Coating |
| Sterilization | | Non-Sterile | Non-Sterile |
| Material | | Ti 6Al 4V ELI<br>(ASTM F136) | Ti 6Al 4V ELI<br>(ASTM F136) |
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Image /page/12/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is written in large, bold, black letters. Below the word "IZEN" is the word "IMPLANT" written in smaller, gray letters. The upper right corner of the "N" in "IZEN" has a teal triangle.
# 5) Multi Abutment
| | Subject Device | Predicate Device | |
|-------------------|-------------------------------|--------------------------------|--------------|
| Manufacturer | Izenimplant Co., Ltd. | Osstem Implant Co., Ltd. | |
| Device Name | ZENEX Implant System | Osstem Abutment System | |
| 510(k) Number | | K182091 | |
| Classification | Class II | Class II | |
| Design | Image: Subject Device Design | Image: Predicate Device Design | |
| Connection Type | Hex, Non-Hex | Hex, Non-Hex | |
| Dimension | D(Ø) | 4.8 | 4.9 |
| | Angle | 0°, 17°, 30° | 0°, 17°, 30° |
| Surface Treatment | Non-Coating (Angled Abutment) | Non-Coating (Angled Abutment) | |
| Sterilization | Non-Sterile | Non-Sterile | |
| Material | Ti 6Al 4V ELI<br>(ASTM F136) | Ti 6Al 4V ELI<br>(ASTM F136) | |
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Image /page/13/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is written in large, bold, black letters, with the "N" having a teal triangle in the upper right corner. Below the word "IZEN" is the word "IMPLANT" written in smaller, gray letters.
# 6) Temporary Abutment
| | | Subject Device | Predicate Device |
|-------------------|-------------|------------------------------|-------------------------------|
| Manufacturer | | Izenimplant Co., Ltd. | Osstem Implant Co., Ltd. |
| Device Name | | ZENEX Implant System | Osstem Abutment System |
| 510(k) Number | | | K182091 |
| Classification | | Class II | Class II |
| Design | | Image: ZENEX Implant System | Image: Osstem Abutment System |
| Connection Type | | Hex, Non-Hex | Hex, Non-Hex |
| Dimension | D(Ø) | 4.0 ~ 4.5 | 4.0 ~ 4.5 |
| | P/H<br>(mm) | 10 | 10 |
| | Angle | 0° | 0° |
| Surface Treatment | | Non-Coating | Non-Coating |
| Sterilization | | Non-Sterile | Non-Sterile |
| Material | | Ti 6Al 4V ELI<br>(ASTM F136) | Pure Titanium (Gr.3) |
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Image /page/14/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is in large, bold, black letters. The word "IMPLANT" is in smaller, gray letters below the word "IZEN". The upper right corner of the "N" in "IZEN" has a teal triangle.
# 7) Healing Abutment
| - | | Subject Device | Predicate Device |
|-------------------|----------------|------------------------------|------------------------------|
| Manufacturer | | Izenimplant Co., Ltd. | Neobiotech Co., Ltd. |
| Device Name | | ZENEX Implant System | IS-III active System |
| 510(k) Number | | | K181138 |
| Classification | | Class II | Class II |
| Design | | | |
| Connection Type | | Non-Hex | Non-Hex |
| Dimension | D( $Φ$ ) | 4.3 ~ 9.0 | 4.0~9.0 |
| | P/ $Φ$<br>(mm) | 2.0 ~ 9.0 | 2.3 ~ 7.8 |
| | Angle | 0° | 0° |
| Surface Treatment | | Non-Coating | Non-Coating |
| Sterilization | | Gamma | Gamma |
| Material | | Ti 6Al 4V ELI<br>(ASTM F136) | Ti 6Al 4V ELI<br>(ASTM F136) |
{15}------------------------------------------------
Image /page/15/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is written in large, bold, black letters. To the right of the "N" is a green triangle. Below the word "IZEN" is the word "IMPLANT" written in smaller, gray letters.
# 8) Cover Screw
| | | Subject Device | Predicate Device |
|-----------|-------------------|------------------------------|------------------------------|
| | Manufacturer | Izenimplant Co., Ltd. | Neobiotech Co., Ltd. |
| | Device Name | ZENEX Implant System | IS-III active System |
| | 510(k) Number | | K181138 |
| | Classification | Class II | Class II |
| | Design | Image: Design of Izenimplant | Image: Design of Neobiotech |
| | Connection Type | Non-Hex | Non-Hex |
| | D( ) | 3.0 ~ 3.9 | 3.45 ~ 3.6 |
| Dimension | Length (mm) | 5 ~ 7.3 | 5.85 ~ 8.0 |
| | Angle | 0° | 0° |
| | Surface Treatment | No Treatment | No Treatment / Anodizing |
| | Sterilization | Gamma | Gamma |
| | Material | Ti 6Al 4V ELI<br>(ASTM F136) | Ti 6Al 4V ELI<br>(ASTM F136) |
{16}------------------------------------------------
Image /page/16/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is written in large, bold, black letters. Below the word "IZEN" is the word "IMPLANT" written in smaller, gray letters. The upper right corner of the "N" in "IZEN" has a teal triangle.
# 9) Multi Ti Link Cylinder
| - | | Subject Device | Predicate Device |
|-----------|-------------------|-------------------------------|-----------------------------------|
| | Manufacturer | Izenimplant Co., Ltd. | Osstem Implant Co., Ltd. |
| | Device Name | ZENEX Implant System | Osstem Abutment System |
| | 510(k) Number | - | K182091 |
| | Classification | Class II | Class II |
| | Design | Image: Multi Ti Link Cylinder | Image: Multi Combination Cylinder |
| | | (Multi Ti Link Cylinder) | (Multi Combination Cylinder) |
| | Connection Type | Non-Hex | Non-Hex |
| Dimension | D(θ) | 4.8 | 5.0 |
| | L<br>(mm) | 4.5 | 7.3 |
| | Angle | 0° | 0° |
| | Surface Treatment | Non-Coating | Non-Coating |
| | Sterilization | Non-Sterile | Non-Sterile |
| | Material | Ti 6Al 4V ELI<br>(ASTM F136) | Titanium Gr. 3<br>(ASTM F67) |
{17}------------------------------------------------
Image /page/17/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is in large, bold, black letters. To the right of the "N" is a teal triangle. Below the word "IZEN" is the word "IMPLANT" in smaller, gray letters.
# 10) Multi Temporary Cylinder
| | | Subject Device | Predicate Device |
|-------------------|-----------|---------------------------------------------------------------|-----------------------------------------------------------------------------|
| Manufacturer | | Izenimplant Co., Ltd. | Osstem Implant Co., Ltd. |
| Device Name | | ZENEX Implant System | Osstem Abutment System |
| 510(k) Number | | - | K182091 |
| Classification | | Class II | Class II |
| Design | | Image: Multi Temporary Cylinder<br>(Multi Temporary Cylinder) | Image: Esthetic-low Temporary Cylinder<br>(Esthetic-low Temporary Cylinder) |
| Connection Type | | Non-Hex | External Hex |
| Dimension | D(0) | 4.8 | 4.8, 5.5 |
| | L<br>(mm) | 12 | 12 |
| | Angle | 0° | 0° |
| Surface Treatment | | Non-Coating | Non-Coating |
| Sterilization | | Non-Sterile | Non-Sterile |
| Material | | Ti 6Al 4V ELI<br>(ASTM F136) | Titanium Gr. 3<br>(ASTM F67) |
{18}------------------------------------------------
Image /page/18/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is written in large, bold, black letters. Below the word "IZEN" is the word "IMPLANT" written in smaller, gray letters. The upper right corner of the "N" in IZEN is colored in a teal color.
## 11) Multi CCM Cast Cylinder
| - | | Subject Device | Predicate Device |
|-------------------|-----------|--------------------------------|-------------------------------|
| Manufacturer | | Izenimplant Co., Ltd. | Osstem Implant Co., Ltd. |
| Device Name | | ZENEX Implant System | Osstem Abutment System |
| 510(k) Number | | - | K182091 |
| Classification | | Class II | Class II |
| Design | | Image: Multi CCM Cast Cylinder | Image: Multi NP Cast Cylinder |
| Connection Type | | Non-Hex | Non-Hex |
| Dimension | D(θ) | 4.8 | 5.0 |
| | L<br>(mm) | 11 | 7.3 |
| | Angle | 0° | 0° |
| Surface Treatment | | Non-Coating | Non-Coating |
| Sterilization | | Non-Sterile | Non-Sterile |
| Material | | CoCrMo Alloy | CoCrMo Alloy |
## 6.2 Comparison Conclusion to predicate device
The subject devices are substantially equivalent to the predicate and reference devices with respect to indications for use, technology and construction. The differences between the predicate devices and the subject devices are minor and any risks have been mitigated through testing.
{19}------------------------------------------------
Image /page/19/Picture/0 description: The image shows the logo for IZEN Implant. The word "IZEN" is written in large, bold, black letters. The upper right portion of the "N" is colored in teal. Below the word "IZEN" is the word "IMPLANT" written in smaller, gray letters.
## 7. NON-CLINICAL DATA
As part of demonstrating substantial equivalence of the ZENEX Implant System to the predicate devices, Izenimplant Co., Ltd. conducted performance testing on the subject devices. Although there are slightly different points such as dimension or material, it does not impact the ability to determine substantial equivalence of the subject devices because the substantial equivalence of performance for ZENEX Implant System is demonstrated by the following verification and validation data to demonstrate the safety and performance effectiveness.
- . Sterilization Validation
- 1) Gamma Sterilization Products
ZENEX Fixture (ZENEX MULTI Fixture and ZENEX PLUS Fixture), Healing Abutment and Cover Screw are sterilized by gamma on the sterilization process.
- A. Gamma Sterilization Validation in accordance with ISO 11137-1: 2006+A2:2018, ISO 11137-2:2013 and ISO 11137-3:2017
### 2) User Moist Heat Sterilization Product
All Abutment and accessories, excepting Healing Abutment and Cover Screw, are provided nonsterilize
However, the device is intended to be sterilized by user moist heat sterilization.
- A. Moist Heat Sterilization Validation Report in accordance with ISO 11138-1:2017, ISO 11138-3:2017, ISO 17665-1:2006, ISO/TS 17665-2:2009, ISO 11737-1:2018 and ISO 11737-2:2019
- . Packing Validation with shelf-life and integrity test
Stability and the effectiveness of packaging as sterilized product (ZENEX Fixtures, Healing Abutment and Cover Screw) by evaluation in process of time and performance of packaging material according to the ISO 11607-1:2019, ISO 11607-2:2019, ISO 11137, ASTM F1980, ASTM F88, ASTM F1140, ASTM F1929, ASTM F1140
{20}------------------------------------------------
#### • Biocompatibility Test
The biocompatibility tests were performed to protect patients from undue risks arise from biological hazards associated with materials of manufacture and final device. The tests were performed in accordance with ISO 10993-1, ISO 10993-5, and FDA Guidance - Use of International Standard ISO 10993-1, "Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process."
#### • Performance
The following tests were performed to assess effectiveness of the product performance including mechanical properties. The tests were performed in accordance with following standards and the "Class II Special Controls Guidance Document: Root-form Endosseous Dental Implants and Endosseous Dental Implant Abutments"
The mechanical properties tests were performed by being based on each product different properties and dimensions. Fatigue testing was conducted on worst-case constructs per ISO 14801
#### . Surface Treatment Test
## 1) SLA Surface Treatment Product
The surface treatment information with SLA (Sandblasted with Large-grit and Acid-etching) was provided. To analyze surface modification, SEM, EDS images including ICP and IC analysis result were provided to demonstrated removal of manufacturing, residuals (blast media and acids).
## 2) TiN Coating Surface Treatment Product
The surface treatment information with TiN Coating was provided. To analyze surface modification, surface characteristic including physical properties (thickness and abrasion) and surface roughness data were provided and it demonstrated substantial equivalence.
{21}------------------------------------------------
#### MR Environment Condition ●
Non-clinical worst-case MRI review was performed to evaluate the metallic ZENEX Implant System devices in the MRI environment using scientific rationale and published literature (e.g., Woods, Terry O., Jana G. Delfino, and Sunder Rajan. "Assessment of Magnetically Induced Displacement Force and Torque on Metal Alloys Used in Medical Devices." Journal of Testing and Evaluation 49.2 (2019): 783-795), based on the entire system including all variations (all compatible implant bodies, dental abutments, and fixation screws) and material composition. Rationale addressed parameters per the FDA guidance "Testing and Labeling Medical Devices for Safety in the Magnetic Resonance (MR) Environment," including magnetically induced displacement force and torque
- . Endotoxin Batch Test
Pyrogenicity information provided is based on FDA Guidance "Submission and Review of Sterility Information in Premarket Notification (510(k)) Submission for Devices Labeled as Sterile. Furthermore, the endotoxin level of the test item was determined and was within the limit of 20 EU/device. The Bacterial Endotoxin Testing (BET) was performed by the chromogenic kinetic method.
LAL tests was performed according to the United States Pharmacopoeia (USP<85> and USP <161>) referenced FDA Guidance (Pyrogen and Endotoxins Testing: Questions and Answers; 2012-06) and the ANSI/AAMI ST72.
The results of the above tests have met the criteria of the standards and demonstrated the substantial equivalence with the predicate device.
## 8. CLINICAL AND ANIMAL TEST
Clinical and animal testing were not performed for ZENEX Implant System as part of the premarket notification requirements for this 510(k) submission and the subject of this premarket submission, ZENEX Implant System, did not require clinical and animal studies to support substantial equivalence
## 9. CONCLUSION
{22}------------------------------------------------
Image /page/22/Picture/0 description: The image contains the logo for IZEN Implant. The logo features the word "IZEN" in bold, sans-serif font, with the "N" having a teal triangle extending from its upper right corner. Below "IZEN" is the word "IMPLANT" in a smaller, sans-serif font.
The comparison between the subject devices and the predicate devices shows that the general information, some technical and material information are the same. Although there are some differences, the performance test reports are supported to the substantial equivalence of the subject device, the performance test reports are provided to demonstrate substantial equivalence of the subject devices. Therefore, we conclude that the different characteristics do not raise different questions of safety and effectiveness, and thus the subject devices are substantially equivalent to the predicate devices.
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Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.