General dental patient population; Sample Size: 93,000 units shipped
Not applicable for this study
Incidence of adverse reports
Indications for Use
Cavios® Cavity Liner is a yellow-white, single-component, light cured, material for dentin liner and base. Cavios® is easily expressed through the plunger type syringe with single use disposable tips. Cavios is intended for the general dental patient population and can be delivered directly into the prepared cavity. The syringe application directly into the cavity. The Cavios material provides excellent radiopacity.
Device Story
Cavios is a light-cured, single-component, yellow-white paste used as a dentin liner and base in dental procedures. The material is preloaded into a syringe and expressed through single-use disposable tips directly into a prepared cavity. After application, the material is polymerized using a light source (approx. 470 nm). The device is used by dental professionals in a clinical setting. It provides radiopacity to assist in post-restorative assessment. The device benefits patients by serving as a protective base or liner before the placement of restorative materials like amalgam or composite. The syringe is designed for multiple uses, requiring a new tip for each patient and cleaning with an alcohol wipe between uses.
Clinical Evidence
No clinical trials were conducted. Evidence consists of bench testing and biocompatibility evaluations. Biocompatibility testing (ISO 10993) included genotoxicity (negative), hemolysis (negative), and cytotoxicity (not cytotoxic). Sensitization testing showed a possible mild response. Bench testing per ISO 4049:2000 reported a depth of cure of 1.4mm, flexural strength of 59.9 MPa, water sorption of 33 µg/mm³, and solubility of -0.8 µg/mm³.
Technological Characteristics
Single-component, light-cured paste. Materials: Urethane dimethacrylate (UDMA) base, a-Tricalcium phosphate filler, barium sulfate (radiopaque). Form factor: Preloaded syringe with single-use disposable tips. Energy source: External light source (approx. 470 nm) for polymerization. Conforms to ISO 4049:2000 and ISO 10993 standards.
Indications for Use
Indicated for use in the general dental population as a cavity liner to be applied to the interior of a prepared cavity prior to the insertion of restorative materials.
Regulatory Classification
Identification
A calcium hydroxide cavity liner is a device material intended to be applied to the interior of a prepared cavity before insertion of restorative material, such as amalgam, to protect the pulp of a tooth.
Predicate Devices
UltraBlend Plus Calcium Hydroxide Dentin Liner and Protective Base (K970113)
Submission Summary (Full Text)
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Image /page/0/Picture/0 description: The image shows a world map and the number 12111668. The world map is a simple outline of the continents. The number is written in a handwritten style. The number is to the right of the world map.
## EMERGO GEROUP
AUG 1 9 2011
### Section 005 - Traditional 510(k) Summary
As required in 21CFR 807.92, we hereby submit this 510(k) Summary:
### 510(k) owners name, address, phone, fax, contact person & prep date
The 510(k) owner is NeoDental Chemical Products Co., Ltd.
3-1-3 Hiroo, Shibuyaku, Tokyo, Japan 150.
Phone - 3 (3400) 3768,
Fax - 3 (3499) 0613.
The contact person is Mr. Nobuki Ishikawa, Treasurer, NeoDental International, Inc.
510(k) preparation date – 05 May 2011
### Name of the device, trade name, proprietary name, and classification name
Trade name: Cavios Cavity Liner
Common name: Cavity Liner
Classification name: Calcium hydroxide cavity liner (21 CFR 872.3250, Product Code EJK).
### Predicate Device:
The legally marketed predicate for the Cavios® Cavity Liner is UltraBlend Plus Calcium Hydroxide Dentin Liner and Protective Base (K970113).
### Device Description:
NeoDental Chemical Products, Inc, (NeoDental) wishes to submit their Cavios® Cavity Liner Device Material for 510(k) clearance.
Cavios®, (shown in Figure 1) is a light cured single-component yellow-white paste for use as a dentin liner and base. The product is preloaded into syringes and expressed via the syringe plunger through single-use disposable tips. Following the application, Cavios® is cured (polymerized) with a light source (approximately 470 nm). Following polymerization, the restorative materials, amalgam, etc., may be placed.
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Image /page/1/Figure/0 description: This image shows a world map. The map is a simple outline, with the continents and major landmasses clearly visible. The map appears to be a simplified representation of the world, focusing on the shapes of the continents rather than specific details.
# EMERGO GROUP
Image /page/1/Figure/2 description: The image shows a product called "Cavios". The product is in a box with the name "Cavios" printed on it. There is also a tool with several attachments next to the box. The figure is labeled "Figure 1".
Cavios® is packaged as a multiple use syringe, with new tips being attached for each patient. The syringe can be used until empty. The syringe is kept capped between uses and is fitted with a new tip just prior to use. The syringe is cleaned with an alcohol wipe before and after use.
### Indication for Use:
Cavios® Cavity Liner is to be applied to the interior of a prepared cavity prior to the insertion of restorative materials. Cavity Liner is indicated for use in the general dental population.
### Intended Use:
Cavios® Cavity Liner is a yellow-white, single-component, light cured, material for dentin liner and base. Cavios® is easily expressed through the plunger type syringe with single use disposable tips. Cavios is intended for the general dental patient population and can be delivered directly into the prepared cavity. The syringe application directly into the cavity. The Cavios material provides excellent radiopacity.
The Intended Use information from the predicate product is equivalent and is reproduced below:
Ultradent Products, Inc's "UltraBlend Plus" calcium hydroxide dentin liner and protective base" is indicated as a cavity liner and/or base material before placing either composite or amalgam. It is also used for pulp capping and small direct exposures without hyperemic bleeding. UltraBlend Plus may also be used as an opaque when amalgam has "tattooed" dentin and an esthetic restoration is being placed or when performing a crown repair where the metal is showing.
As is documented in the comparison of Indications For Use, the Cavios® and Ultra-Blend Plus dentin liner and base are indicated for the same use, share the same clinical indication, clinical setting, target population, anatomical sites, intended use, prescription requirement, storage conditions and method of application.
### Technological characteristics - Cavios versus the predicate device
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# EMERGO GROUP
A technical comparison of the subject device to the predicate device is detailed in the Substantial Equivalence discussion below. Cavios was designed, tested and compared to Ultra-Blend plus (see the comparison table below).
Both Cavios and Ultra-Blend utilize a single-component material that is photo-polymerized to form a liner for subsequent placing of dental restorations. The primary difference between the subject device and the predicate is a minor difference in the filler material. Both products utilize urethane dimethacrylate as the photo-polymerizing base. Cavios employs a-Tricalcium phosphate whereby Ultra-Blend plus uses calcium hydroxyapetite as fillers. Both materials are mixed to maintain the properties of the paste and filling material. Both products utilize barium sulfate to provide radio opacity.
The Cavios® Cavity Liner has been evaluated according to the recognized consensus standards and other testing (see sections 15 and 18) and was found to conform to all requirements. Test data is further discussed in the respective sections (biocompatibility and bench testing)
### Non clinical test data:
A number of testing standards were utilized to evaluate Cavios (see Sections 15 and 18). Per ISO 10993-1, Annex A, Cavios can be categorized as follows:
| Medical device categorization by: | | Biological effect for consideration | | |
|-----------------------------------|------------------|-------------------------------------|------------------------------------------------------------------------|--|
| Nature of body<br>contact | Category | External<br>Communicating<br>Device | Cytotoxicity<br>Sensitization<br>Irritation | |
| | Contact | Tissue/bone/dentin | System Toxicity<br>Subchronic Toxicity<br>Genotoxicity<br>Implantation | |
| | Contact duration | | C - Permanent (> 30<br>days) | |
Urethane resin (UDMA), the main ingredient of Cavios has been widely used in dental restorative materials as a "composite resin". Alpha tricalcium phosphate and barium
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Image /page/3/Picture/0 description: This image shows a world map with the continents outlined. The map is a simple line drawing, with no colors or shading. The continents are all roughly in their correct positions, but the details of the coastlines are not very accurate. The map appears to be a simplified representation of the world, possibly intended for educational purposes.
·
Image /page/3/Picture/1 description: The image shows the text "EMERGO GROUP" in a simple, sans-serif font. The word "EMERGO" is followed by a circular logo with three curved lines inside. The word "GROUP" is placed after the logo, completing the company name.
sulfate, ingredients of Cavios, have been widely used in filling materials as filler or radiopaque materials and are free of harmful substances.
ISO 10993-1 presents a schema for deciding whether biocompatibility evaluation is required.
Is there either direct or indirect contact? YES
Is the material the same as in a commercially available device? YES
YES Does the device have the same chemical composition as these devices?
Are the manufacturing and sterilization processes the same? YES
Is the contact to the body the same? YES
Given this schema, there is no need to select biological tests. Nonetheless, we have obtained selected ISO 10993 test results for the Cavios product as follows.
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Image /page/4/Picture/0 description: This image shows a world map with the continents and islands outlined in black. The map appears to be a simple line drawing, with no shading or other details. The continents of North America, South America, Africa, Europe, Asia, and Australia are all visible. The map is centered on the Atlantic Ocean, with the Americas on the left and Europe and Africa on the right.
## EMERGO GROUP
### Table of biocompatibility tests conducted
| Biological Test | Date & Lab | Method | Result |
|--------------------------------------------------|----------------------|---------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Genotoxicity<br>ISO 10993-3 | 9/16/2002<br>Covance | Bacterial strains<br>(TA98, TA100,<br>TA1535, WP2uvrA),<br>S9+ S9 methods | Negative |
| Hemolysis | 10/7/2002<br>Covance | Hemolysis in rabbit<br>whole blood assay | Cavios was tested for<br>Hemolysis both<br>directly and as<br>extracts. Test article<br>induced 0.1% to<br>2.8% hemolysis.<br>Cavios is considered<br>negative in this<br>assay. |
| Cytotoxicity<br>ISO 7405 6.2/6.3,<br>ISO 10993-5 | 9/18/2002<br>Covance | Agar Overlay | Not cytotoxic to<br>cultured L929<br>mouse fibroblast<br>cells after a 24-hour<br>exposure. |
| Sensitization<br>ISO 10993-10 | 9/12/2002<br>Covance | Guinea Pig<br>Maximization | Possible mild<br>sensitizer<br>(sensitization rate:<br>24 hr – 20%)<br>48 hr - 20% |
We did not conduct testing for system toxicity, subchronic toxicity, irritation and implantation. The results above in addition to the long and widespread use of these compounds, suggests that there are no biocompatibility issues. A total of 93,000 Cavios units have shipped since 2004; there have been no incidents or adverse reports since 2005. Cavios also carries a CE Mark and was recently re-evaluated in October of 2010.
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.
# EMERGO G GROUP
ISO 4049:2000 Polymer-based restorative and luting materials:
- Depth of Cure 1.4mm ●
- Flexural Strength 59.9 Mpa
- Water Sorption33. µg/mm3 . Solubility -0.8 µg/mm3 .
End of 510(k) Summary Section
.
·
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#### DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/6/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle or bird-like symbol with three curved lines representing its wings or body. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" is arranged in a circular fashion around the symbol.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
NeoDental Chemical Products Co., Ltd. C/O Mr. Robert Seiple EMERGO Group, Inc. 611 West 5th Street, Third Floor Austin, TX 78701
AUG 1 9 2011
Re: K111668
Trade/Device Name: Cavios® Cavity Liner Regulation Number: 21 CFR 872.3250 Regulation Name: Calcium Hydroxide Cavity Liner Regulatory Class: II Product Code: EJK Dated: June 13, 2011 Received: June 14, 2011
.Dear Mr. Seiple:
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. 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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Page 2 - Mr. Seiple
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 (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to
http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm1115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Wh for.
Anthony D. Watson, B.S., M.S., M.B.A. Director Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Image /page/8/Picture/0 description: The image shows a world map with the continents outlined. The continents of North America, South America, Europe, Africa, Asia, and Australia are all visible. The map appears to be a simple outline, with no additional details such as country borders or major cities.
## EMERGO GEROUP
### Section 004 - Indication for Use
## INDICATIONS FOR USE STATEMENT
510(k) Number (if known): K111668
Cavios® Cavity Liner Device Name:
Indications for Use:
Cavios® Cavity Liner is to be applied to the interior of a prepared cavity prior to the insertion of restorative materials. Cavity Liner is indicated for use in the general dental population.
Prescription Use X (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
| (Division Sign-Off) | |
|----------------------------------------------|---------|
| Division of Anesthesiology, General Hospital | |
| Infection Control, Dental Devices | |
| 510(k) Number: | K111668 |
Page 1 of 1
EMERGO GROUP INC. 611 West 5 Street Third Floor | Austin, Texas 78701 | USA | Telephone: +1 512 327 9997
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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.