Post-market sales data; Adverse event reporting records
The sponsor utilized post-market sales volume and the absence of reported adverse events from 2005 to 2011 to support the safety profile of the device.
General dental patient population; Sample Size: 76,000 sets sold
Not applicable for this study
Incidence of adverse events
Indications for Use
Evadyne® is a light cured, single-component material for temporary restoration. Evadyne® is easily expressed through the plunger type syringe and the low viscosity paste allows for direct filling. The product is delivered directly into the prepared cavity using single-use, disposable tips. Evadyne is a tasteless, odorless restoration, provides good sealing and can be easily removed when the permanent restoration is to be placed.
Device Story
Evadyne is a light-cured, single-component, yellowish translucent resin for temporary dental restorations. Material is supplied in a multi-use plunger-type syringe; applied directly into prepared cavities using single-use disposable tips. Device is used by dental professionals in a clinical setting. After light-curing, material provides a temporary seal for crowns, bridges, or similar prostheses; it is removed in one piece when the permanent restoration is placed. Syringe is cleaned with alcohol wipes between uses. Benefits include ease of application due to low viscosity and simple removal.
Clinical Evidence
No clinical data. Evidence consists of bench testing and biocompatibility evaluations. Biocompatibility testing included cytotoxicity (Agar Overlay Assay), sensitization (Maximization method), genotoxicity (Bacterial strain S9+ & S9-), and irritation (Ocular irritation test). Device conforms to ISO 10993-1 requirements.
Technological Characteristics
Light-cured, single-component resin. Composition includes Urethane resin (UDMA) and fluoroaluminosilicate glass filler. Delivered via multi-use plunger syringe with disposable tips. Polymerization mechanism is light-curing. Evaluated per ISO 10993-1 for biocompatibility.
Indications for Use
Indicated for temporary restoration of crowns, bridges, or similar dental prostheses in the general dental patient population.
Regulatory Classification
Identification
A temporary crown and bridge resin is a device composed of a material, such as polymethylmethacrylate, intended to make a temporary prosthesis, such as a crown or bridge, for use until a permanent restoration is fabricated.
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Image /page/0/Picture/0 description: The image shows a world map with the continents outlined in black. The map appears to be a simplified representation of the world. To the right of the map, there is a handwritten inscription that reads 'K111666'.
SEP - 7 2011
### Section 005 - Traditional 510(k) Summary
As required in 21 CFR807.92, we hereby submit this 510(k) Summary.
### 510(k) owners name, address, phone, fax, contact person & preparation 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 - 28 May 2011
#### SUBJECT DEVICE:
#### Name of the device, trade name, proprietary name, and classification name
Trade name: Evadyne Temporary Crown and Bridge Resin
Common name: Temporary Crown and Bridge Resin
Classification name: Crown and Bridge, Temporary, Resin (21 CFR 872.3770, Product Code EBG).
#### Device Description:
NeoDental Chemical Products, Inc, (NeoDental) wishes to submit their Evadyne® Temporary Crown and Bridge Resin for 510(k) clearance.
Evadyne®, (shown in Figure 1) is a yellowish translucent, light-cured temporary restoration material for direct filling. After curing, Evadyne can be removed in one piece when the permanent restoration is to be placed.
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Image /page/1/Picture/0 description: This image shows a world map. The map is a simple outline of the continents and major landmasses. The map appears to be a black and white image, with the landmasses outlined in black and the oceans in white.
Figure 1
Image /page/1/Picture/3 description: The image shows a box of Bixodyne dental syringes and one syringe outside of the box. The box is a dark color with the word "Bixodyne" printed on it in a lighter color. The syringe is silver with a black plunger and a small, curved needle. The syringe is sitting on top of a small piece of paper.
Image /page/1/Picture/4 description: The image shows a black and white illustration of a syringe. The syringe has a long, cylindrical body with a plunger on one end and a needle on the other. The needle is curved and has a sharp point. There are two handles on the side of the syringe. The syringe appears to be made of metal.
Image /page/1/Figure/5 description: The image shows the text "Figure 2 - Syringe". The text is in a sans-serif font and is left-aligned. The words "Figure" and "Syringe" are capitalized, and the number "2" is present.
Evadyne® 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:
Evadyne® is a light cured single-component material for the temporary restoration of crowns, bridges, or similar dental prostheses. Evadyne is intended for the general dental patient population.
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Image /page/2/Picture/0 description: The image shows a world map. The map is a simple outline of the continents and islands. The continents are North America, South America, Europe, Africa, Asia, and Australia. The islands are Greenland, Iceland, Japan, and New Zealand. The map is a useful tool for learning about the world.
#### Intended Use:
Evadyne® is a light cured, single-component material for temporary restoration. Evadyne® is easily expressed through the plunger type syringe and the low viscosity paste allows for direct filling. The product is delivered directly into the prepared cavity using single-use, disposable tips. Evadyne is a tasteless, odorless restoration, provides good sealing and can be easily removed when the permanent restoration is to be placed.
The Indications for Use and Intended Use information for the predicate product are equivalent and are reproduced below:
#### PREDICATE DEVICE:
The legally marketed predicate for the Evadyne® Temporary Crown and Bridge Resin is Fermit-N, (K934978), a light-curing temporary filling material produced by IvoClar N.A., Inc.
Indications for Use: Temporary restoration material
Intended Use: - Temporary restorations in the inlay/onlay technique for temporary restorations of all kinds. Relining material for prefabricated temporary crowns and bridges made of polycarbonate or methacrylates.
As is documented in the comparison of Indications For Use and Intended Use, the Evadyne® temporary bridge and crown resin and the Fermit N temporary bridge and crown resin 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 - Evadyne® versus the predicate device
A technical comparison of the subject device to the predicate device is detailed in the Substantial Equivalence discussion below (see the comparison table below).
Both Evadyne® and Fermit N are indicated for the same use. Evadyne was designed, tested and compared to Fermit N.
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Image /page/3/Picture/0 description: This image shows a world map. The map is a simple outline of the continents and islands. The continents are North America, South America, Europe, Africa, Asia, and Australia. The islands are Greenland, Iceland, Japan, and New Zealand. The map is a simple representation of the world.
Similarities: Evadyne is substantially equivalent to the predicate device in:
- Device description, ●
- Intended use, ●
- Indication for use, .
- Requirement for prescription use, ●
- Storage conditions, .
- Mechanism of polymerization (light polymerized) .
- . Container/closure
Differences: There are slight differences between the Fermit N product and Evadyne.
- . Composition - Evadyne uses a fluoroaluminosilicate glass as a filler. Fermit uses a co-polymer. Both of these compounds are used to maintain the properties of the filling material.
- Flow, flexural strength, and syringe type differ due to Evadyne is formulated to . have a lower viscosity for better ease of use (application directly to the prepared cavity from the syringe). The lower viscosity also results in Evadyne having a lower flexural strength relative to Fermit N.
We conclude that for all significant parameters, Evadyne is substantially equivalent to Fermit N. These include the photocatalytic material and mechanism, intended use, indication for use, most physical properties, design, packaging and performance.
#### Non clinical test data:
The Evadyne® temporary crown and bridge resin has been evaluated according to recognized consensus standards defined in ISO 10993-1. Results were found to conform to requirements (see section 15). Test data is further discussed in Section 15.
21 CFR 872.3770 lists the following recognized consensus standards:
- ANSI/ADA Specification No. 53 Polymer-Based crowns and Bridge Resins; . 1999/2005.
- . ANSI/ADA Specification No. 80 - Dental Materials - Determination of Color Stability 2001/2007.
- ISO 10477:2004 Dentistry Polymer-based crown and bridge materials .
- ISO 7405:2008 Evaluation of biocompatibility of medical devices used in dentistry. .
However, NeoDental believes that these tests are not relevant for the following reasons:
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Image /page/4/Picture/0 description: This image shows a world map. The map is a simple outline of the continents and landmasses. The map appears to be a black and white image, with the landmasses outlined in black and the oceans appearing white.
- Evadyne is a TEMPORARY FILLING material for cavities. Physical properties have evaluated according to ISO 4049, but the other tests required in ISO-4049 are not applicable to Evadyne for the following reasons:
- o ISO-10477 is for crown bridge cement. The tests relating to Evadyne are same as ISO 4049.
- ANSI Spec 53 is identical to ISO-10477 o
- ANSI Spec 80 is for color stability of products which are to be applied to o permanent restorations having color shadings.
### Biocompatibility of Evadyne
According to ISO 10993-1 Annex A, Evadyne can be categorized as shown Table 1.
Table 1
| Medical device categorization by | | | Biological effect for<br>consideration |
|----------------------------------|----------|----------------------------------|----------------------------------------|
| Nature of<br>body contact | Category | External communicating<br>device | - Cytotoxicity |
| | | | - Sensitization |
| | | Contact | Tissue/bone/dentin |
| Contact duration | | B (>24 h to 30 days) | - Systemic toxicity |
| | | | - Subchronic toxicity |
| | | | - Genotoxicity |
| | | | - Implantation |
### < Biological evaluation >
Urethane resin (UDMA), main ingredient of Evadyne, has been widely used in dental restorative materials as a "composite resin". Additionally, fluroaluminosilicate glass, an ingredient of Evadyne, has been widely used in composite filling materials.
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.
According to ISO 10993-1, the systematic approach to a biological evaluation for Evadyne is as follows.
| Start |
|-----------------------------------------------------------|
| ↓ |
| Is there either direct or indirect contact? |
| yes |
| ↓ |
| Is the material same as in commercially available device? |
| yes |
| ↓ |
| Dose the device have the same chemical composition? |
| yes |
| ↓ |
| Are the manufacturing and the sterilization the same? |
| yes |
| ↓ |
| Is the body contact the same? |
| yes |
| ↓ |
| Perform biological evaluation (Annex A) |
| Biological evaluation complete |
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Image /page/6/Picture/0 description: The image shows a world map with the continents and islands outlined in black. The map appears to be a simple, possibly hand-drawn, representation of the world. The continents of North America, South America, Europe, Africa, Asia, and Australia are all visible. The map is a basic geographical representation of the world.
### Table 2
| Biological test | Date/<br>Test house | Method |
|-----------------|-----------------------------------------------|------------------------------------------------------------------------------------|
| Cytotoxicity | 2002.9.18/<br>Covance<br>Lab. | Agar Overlay Assay |
| Sensitization | 2002.9.12/<br>Covance<br>Lab. | Maximization method /<br>Guinea Pig |
| Genotoxicity | 2002.9.16/<br>Covance<br>Lab. | Bacterial strain: (TA98,<br>TA100, TA1535, TA1537,<br>WP2uvrA)<br>S9+ & S9- method |
| Irritation | 2001.9.27 /<br>In vitro<br>inter-<br>national | Irritation Assay System<br>(Ocular irritation test<br>method) |
NeoDental did not conduct the biological tests for systemic toxicity, subchronic toxicity and implantation. Testing conducted and the long-use of this product has demonstrated safety for its intended use. Total Evadyne sales equal 76,000 sets from 2005 until now. No incidents or adverse events have been reported since 2005. Furthermore, Evadyne holds the CE mark which was renewed in October 2010.
#### Summary
NeoDental concludes that Evadyne is substantially equivalent to the predicate device in characteristics and technology.
End of 510(k) Summary Section
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Image /page/7/Picture/1 description: The image shows a logo for the U.S. Department of Health & Human Services. The logo features a stylized caduceus symbol, which is a staff with two snakes entwined around it. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES" 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 Company. Limited C/O Mr. Robert Seiple. MPM, RAC Senior Consultant Emergo Global Consulting, LLC 611 West 3" Street Austin, Texas 78701
- 7 2011
Re: K111666
Trade/Device Name: Evadyne® Temporary Crown and Bridge Resin Regulation Number: 21 CFR 872.3770 Regulation Name: Temporary Crown and Bridge Resin Regulatory Class: II Product Code: EBG 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.
{8}------------------------------------------------
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 (QS) 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/ucm 115809.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 vours.
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/9/Picture/0 description: The image shows a world map with the continents and islands outlined in black. The map appears to be a simplified representation of the Earth's landmasses. The continents of North America, South America, Europe, Africa, Asia, and Australia are all visible. The map is a two-dimensional projection of the three-dimensional Earth.
### Section 004 - Indication for Use
| INDICATIONS FOR USE STATEMENT | |
|-------------------------------|-------------------------------------------|
| 510(k) Number (if known): | K111666 |
| Device Name: | Evadyne® Temporary Crown and Bridge Resin |
Indications for Use:
Evadyne® is a light cured single-component material for the temporary restoration of crowns, bridges, or similar dental prostheses. Evadyne is intended for the general dental patient 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)
Susan Kunon
(Division Sign-Off) Division of Anesthesiology, General Hospital Infection Control, Dental Devices
510(k) Number:
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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.