1. Liner or base 2. Blocking out undercuts 3. Repair of direct and indirect aesthetic restorations: composites, veneers, crowns and bridges (including temporary crowns and bridges), defect margins when margins are in enamel 4. Sealing hypersensitive areas 5. Fissure sealant 6. Direct restorative for small Class I, II, III, IV, and V cavities
Device Story
HTFX-222 is a light-cured, nano-filled, radiopaque composite resin supplied in a syringe. Used by dental professionals in clinical settings for restorative dentistry. Principle of operation involves polymerization of methacrylate ester monomers via a photo-initiator system upon exposure to a curing light. Applied directly to tooth structures or existing restorations to fill cavities, seal areas, or repair defects. Output is a hardened, tooth-colored restorative material. Benefits include aesthetic restoration of tooth structure and protection of hypersensitive areas. Clinical decision-making relies on the practitioner's assessment of cavity class and restoration needs.
Clinical Evidence
Bench testing only. Device performance evaluated against ISO 4049:2009 standards. Tests included depth of cure, flexural strength, water sorption, solubility, color stability, and radiopacity. Results confirmed the device meets required specifications and is suitable for its intended use.
Technological Characteristics
Light-cured, nano-filled, radiopaque composite resin. Polymerization via photo-initiator system. Complies with ISO 4049:2009. Available in 8 shades. Storage: 4-25°C.
Indications for Use
Indicated for use as a liner, base, fissure sealant, for blocking out undercuts, sealing hypersensitive areas, repairing aesthetic restorations (composites, veneers, crowns, bridges), and as a direct restorative for small Class I-V cavities.
Regulatory Classification
Identification
Tooth shade resin material is a device composed of materials such as bisphenol-A glycidyl methacrylate (Bis-GMA) intended to restore carious lesions or structural defects in teeth.
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APR 0 9 20
**GC**
GC AMERICA INC:
3737 WEST 127TH STREET
ALSIP, ILLINOIS 60803
TEL (708) 597-0900
FAX: (708) 371-5103
### 1. Submitter Information:
Section 5 - 510(k) Summary
GC AMERICA INC.
3737 W. 127" Street Alsip, IL 60803
| Contact Person: | Mark Heiss, D.D.S. |
|-----------------|--------------------|
| Phone: | (708) 926-3090 |
| Fax: | (708) 926-9100 |
October 7, 2013 Date Prepared:
### 2. Device Name:
| Proprietary Name: | HTFX-222 |
|------------------------|----------------------------|
| Classification Name: | Tooth shade resin material |
| Device Classification: | Class II, 872.3690 |
| Product Code: | EBF |
### Predicate Devices: 3.
| Company | Device | 510(k) No. | Date Cleared |
|------------------------|-----------------------------------|------------|--------------|
| GC America Inc. | MFP-051 | K123631 | 07/23/2013 |
| GC America Inc. | GC KALORE (GDLS-200) | K082434 | 11/14/2008 |
| GC AMERICA, INC | G-aenial Universal Flo (GCUC-505) | K091388 | 07/22/2009 |
| KERR CORPORATION | PREMISE | K032921 | 11/13/2003 |
| Ivoclar Vivadent. Inc. | Tetric Evoceram | K042819 | 11/09/2004 |
#### Description of Device: 4.
HTFX-222 is a light cured nano-filled radiopaque composite resin filled in a syringe. The device is a universal type. The material is available in 8 shades: A1, A2, A3, A3.5, A4, A02, AO3 and CV
# 5. Indications for Use:
- 1. Liner or base
- 2. Blocking out undercuts
- 3. Repair of direct and indirect aesthetic restorations: composites, veneers, crowns and bridges (including temporary crowns and bridges), defect margins when margins are in enamel
- 4. Sealing hypersensitive areas
- 5. Fissure sealant
- 6. Direct restorative for small Class I, II, III, IV, and V cavities
- Technological characteristics: 6.
All the components of the applicant device, HTFX-222, have already been used in the predicate devices. The curing mechanism of the predicates is polymerization of uncured methacrylate ester monomers. This reaction is caused by photo initiator system.
Image /page/0/Picture/22 description: The image contains two distinct logos. The logo on the left is diamond-shaped and contains text, while the logo on the right is circular and also contains text. The text in the diamond-shaped logo is stacked, and the text in the circular logo is arranged in a more compact manner. Both logos appear to be stamps or seals, given their design and layout.
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### Page 2
- 7. Substantial equivalence:
The applicant device complies with all the requirements of ISO 4049: 2009 (Dentistry -Polymer-based restorative materials).
The curing mechanism of the new and predicate devices is substantially equivalent in principle. Therefore, the new and predicate devices are the same in function, and similar in composition and intended use. This supports that the compatibility and safety of the applicant device are substantially equivalent to the predicate devices.
### Differences
The following differences may be noted between the predicate devices and HTFX-222:
- · All products listed under "Performance Test Results" (Table 18) meet ISO 4049 and differences in Depth of Cure, Flexural Strength and Water Sorption are noted.
#### 8. Performance Bench Tests
It is confirmed that the device conforms to the required specifications of ISO 4049:2009 and is suitable for its intended use. Performance testing includes:
- · Sensitivity to ambient light
- · Depth of cure
- · Flexural strength
- · Water sorption
- · Solubility
- · Color stability after irradiation and water sorption
- · Radiopacity
- Shelf Life Evaluation and Storage Conditions: ರಿ.
- Shelf Life 3 years ।
- Store in a cool and dark place. 4-25℃ (39.2 77.0ºF)
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| Device | Comparative device | | | | |
|---------|------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| MFP-051 | GC | KALORE(GDLS-200) | PREMISE | Tetric Evoceram | G-aenial Universal Flo<br>(GCUC-505) |
| | | Light-cured<br>radiopaque<br>universal<br>composite<br>restorative | Universal nano-filled<br>composite | Light-curing, universal<br>nano-hybrid composite<br>material for high-end<br>standard restorations in<br>the anterior and posterior<br>regions | UNIVERSAL<br>LIGHT-CURED<br>RADIOPAQUE<br>FLOWABLE<br>COMPOSITE |
| | GC Corporation<br>K082434 | GC Corporation<br>K082434 | KERR CORPORATION<br>K032921 | Ivoclar Vivadent. Inc.<br>K042819 | GC Corporation<br>K091388 |
| | 1. Direct restorative for<br>class I, II, III, IV, V<br>cavities. | 1. Direct restorative for<br>GDLS is a light-cured<br>micro-filled radiopaque<br>resin for the restoration<br>of both anterior and<br>posterior teeth.<br>GDLS-200 consists of<br>two delivery systems,<br>Unitip(capsules for<br>single dose) and<br>Syringes. The<br>GDLS-200 system is<br>available in a variety of<br>shades. | Premise is a dental<br>composite restorative<br>material intended to be<br>used in all classes of<br>cavities. | • Anterior<br>restorations(Class<br>III, IV)<br>• Class V restorations<br>(cervical caries, root<br>erosion,<br>wedge-shaped<br>defects)<br>• Restorations in the<br>posterior region<br>(Class I and II)<br>• Veneering of<br>discolored anterior<br>teeth<br>• Splinting of mobile<br>teeth<br>• Repair of composite<br>and ceramic veneers | 1. Restoration of class I,<br>II, III, IV, V cavities.<br>2. Restoration of root<br>surface caries<br>3. Restoration of<br>deciduous teeth<br>4. Filling tunnel shaped<br>cavities<br>5. Sealing<br>hypersensitive areas<br>6. Liner/base/filling in<br>cavity undercuts<br>7. Sealant<br>8. Splinting mobile teeth<br>9. Additions to<br>composite<br>restorations |
| | 2. Direct restorative for<br>wedge-shaped defects<br>and root surface<br>cavities. | | | | |
| | 3. Direct restorative for<br>veneers and diastema<br>closure. | | | | |
:
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Image /page/3/Picture/1 description: The image contains the text "Public Health Service". The text is in a simple, sans-serif font and is left-aligned. The text is likely part of a document or sign.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MI) 20993-0002
# April 9, 2014
GC AMERICA INCORPORATED Mark Heiss, D.D.S. 3737 W. 127" Street Alsip, Illinois 60803
Re: K133182
Trade/Device Name: HTFX-222 Regulation Number: 21 CFR 872.3690 Regulation Name: Tooth shade resin material Regulatory Class: II Product Code: EBF Dated: February 24, 2014 Received: March 4, 2014
Dear Dr. Heiss:
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 10 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. Wc 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 - Dr. Heiss
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 contact the Division of Small Manufacturers, International and Consumer Assistance at its tollfree number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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.
http://www.fda.gov/medicaldevices/resourcesforyou/industry/ucm142661.htm
Sincerely yours,
Mary S. Runner -S
Erin I. Keith, M.S. Acting Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Section 4 - Indications for Use Statement
Indications for Use
510(k) Number (if known):
Device Name: HTFX-222
Indications for Use:
1. Liner or base
2. Blocking out undercuts
- 3. Repair of direct and indirect aesthetic restorations: composites, veneers, crowns and bridges (including temporary crowns and bridges), defect margins when margins are in enamel
- 4. Sealing hypersensitive areas
5. Fissure sealant
- 6. Direct restorative for small Class I, II, III, IV, and V cavities
Prescription Use _ X (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
# (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Sheena A. Green 2014.04.09 12:09:39 04'00'
Page 4.1 of 4.1
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.