Post-market data from the international version of the device was used to support the substantial equivalence of the modified formulation (fumed silica) and packaging (polyfoil tubes) by demonstrating equivalent performance characteristics and safety profiles over years of routine clinical use.
post-market data; international clinical use; substantial equivalence
Clinical Evidence
Study Design
Population
Comparator
Key Endpoints
International post-market surveillance; Post-market observational data; Follow-up/Duration: A number of years
International patients receiving dental cavity liner/pulp capping treatment
Not applicable for this study
Performance characteristics and safety
Indications for Use
Life Regular Set/Life Fast Set is a hard-setting Calcium Hydroxide cavity liners and pulp capping agents to be used in conjunction with all permanent restorative techniques.
Device Story
Life Regular Set and Life Fast Set are two-part, base/catalyst paste systems used by licensed dental professionals as cavity liners and pulp capping agents. The device is applied in a thin layer to protect the dental pulp from thermal shock. Hardening occurs via a chelation reaction between calcium hydroxide and salicylate moieties. The product is packaged in polyfoil tubes and is available in two viscosities (Fast Set and Regular Set). The device is used in clinical dental settings during restorative procedures. The clinical benefit is the protection of the pulp during permanent restorative techniques.
Clinical Evidence
Bench testing only. Verification and validation activities were performed per 21 CFR 820.30 and ISO 13485:2012. Risk analysis was conducted per ISO 14971:2012. No new hazards were identified. Performance was validated through internal process validation and comparison to international market data for the modified formulation and packaging.
Indicated for use as a cavity liner and pulp capping agent in conjunction with all permanent restorative techniques by licensed dental professionals.
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.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized image of a human figure, represented by three overlapping profiles, suggesting a sense of community and care. The logo is presented in black and white.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
June 19, 2015
Sybron Dental Specialties Ms. Kerri Casino Regulatory Affairs Manager 1717 W. Collins Avenue Orange, California, 92867
Re: K150559
Trade/Device Name: Life Regular Set and Life Fast Set Regulation Number: 21 CFR 872.3250 Regulation Name: Calcium hydroxide cavity liner Regulatory Class: II Product Code: EJK Dated: March 4, 2015 Received: March 6, 2015
Dear Ms. Kerri Casino:
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.
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
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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 contact the Division of Industry and Consumer Education 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. 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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely vours.
# Erin I. Keith -S
Erin I. Keith, M.S. 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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DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
# Indications for Use
Form Approved: OMB No. 0910-0120 Expiration Date: January 31, 2017 See PRA Statement below.
510(k) Number (if known)
K150559
Device Name Life Fast Set/ Life Regular Set
Indications for Use (Describe)
Life Fast Set/ Life Regular Set is a hard-setting Calcium Hydroxide cavity liner and pulp capping agent to be used in conjunction with all permanent restorative techniques.
Type of Use (Select one or both, as applicable)
Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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# SECTION 6. 510(k) SUMMARY FOR LIFE REGULAR SET/LIFE FAST SET
Image /page/3/Picture/1 description: The image contains the logo for Sybron Dental Specialties. The logo features the letters "sds" in a stylized, bold, blue font. Below the letters, the words "Sybron Dental Specialties" are written in a smaller, sans-serif font, also in blue. A curved line appears above the letters, adding a design element to the logo.
# Life Regular Set/Life Fast Set
- 1. Submitter Information: Sybron Dental Specialties 1717 W. Collins Ave.
Orange CA, 92687
| Contact Person: | Kerri Casino |
|-------------------|--------------|
| Telephone Number: | 714-516-7634 |
| Fax Number: | 714-516-7472 |
Date Prepared: March 4, 2015
#### 2. Device Name:
●
- Proprietary Name: Life Regular Set and Life Fast Set .
II
- Classification Name: Liner, Cavity, Calcium Hydroxide
- 872.3250 . CFR Number:
- Device Class: ●
- Product Code: EJK .
#### 3. Predicate Device:
Proposed Life Regular Set/Life Fast Set is substantially equivalent to the legally marketed device Life 2 (K012717) cleared on October 25, 2001, product code EJK.
#### 4. Description of Device:
Life Regular Set/Life Fast Set are hard setting Calcium Hydroxide cavity liners and pulp capping agents to be used in conjunction with all permanent restorative techniques. Life is a two-part, base/catalyst- paste/paste system. The two-part system is packaged in tubes. The product is available in two viscosities, Fast Set and Regular Set.
- న. Statement of Intended Use:
Life Regular Set/Life Fast Set is a hard-setting Calcium Hydroxide cavity liners and pulp capping agents to be used in conjunction with all permanent restorative techniques.
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- 6. Summary of Technological Characteristics:
The base formulation of Proposed Life Regular Set and Life Fast Set and the predicate device, Life 2 (K012717), remains unchanged.
The catalyst formulation of Proposed Life Regular Set and Life Fast Set and the predicate device, Life 2 (K012717), is very similar, the only difference being the Fumed Silica. The predicate Life 2 (K012717) contains 2-5% Fumed Silica Aerosil R972, CAS# 68611-44-9. The Proposed Life Regular Set and Life Fast Set contain 2-5% Fumed Silica Cab-o-sil TS720, CAS#67762-90-7.
The mixing of the base and catalyst causes the mixture to harden. This is due to a chelation reaction between the calcium hydroxide and the salicylate moieties. The hardening of the thin layer occurs quickly so that the remaining steps of the procedure can proceed. The intention of a cavity base or pulp liner is to protect the pulp from thermal shock.
The fumed silica is added to serve as a filler and rheological modifier. It does not participate in the reaction. The surface treatment of the fumed silica is conducted to make the filler more hydrophobic and to improve the compatibility with the formulation. The difference between a dimethyldichlorosilane treated fumed silica and a polydimethylsiloxane treated fumed silica is insignificant in this formulation. The formulation utilizing the alternative fumed silica has been on the market for a number of years internationally. Based on post market data, the performance characteristics of this material result in equivalent feedback as that of the predicate. The slight variation in fumed silica does not change the performance characteristics of the device.
The primary tube packaging will be changed from a laminate plastic tube to a polyfoil tube, the same tube in which the international version of the product is currently sold and has been on the market for a number of years. The tube filling operation was validated per an internal process validation. Based on the number of years of successful clinical use of polyfoil tubing internationally and successful validation data, the Proposed Life Regular Set/ Life Fast Set tubing change is deemed substantially equivalent to the predicate Life 2 (K012717).
- 7. Summary of Non-Clinical Performance Data:
Verification and validation activities were performed in accordance with design control requirements as specified in 21 CFR 820.30 and ISO 13485:2012 Medical Devices-Quality Management Systems, and the results demonstrated substantial equivalence to the predicate. Risk analysis for the changes in manufacturing, packaging and formulation was performed utilizing ISO 14971:2012, Application of risk management to medical devices. No new hazards were identified based on post market data from the internationally sold product that has been on the market for a number of years utilizing the proposed manufacturing process, packaging and formulation. The filling process was validated per an internal process validation.
#### 8. Substantial Equivalence:
Life 2 (K012717) is an existing device which was granted market clearance by FDA in 2001. Sybron Dental Specialties seeks only to slightly modify the existing device cleared under K012717. Additionally, the device would be produced at a facility in Scafati, Italy.
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The table below depicts the modification associated with Life Regular Set and Life Fast Set.
| Element | Predicate Device- Life 2<br>(K012717) | Proposed Life Regular Set/Life<br>Fast Set |
|----------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade Name | Life 2 | Life Regular Set and Life Fast Set |
| Target Users | Licensed dental professionals | Licensed dental professionals |
| Device<br>Description | Life 2 is a hard setting Calcium<br>Hydroxide cavity liners and<br>pulp capping agents to be used<br>in conjunction with all<br>permanent restorative<br>techniques. Life 2 is a two-part,<br>base/catalyst- paste/paste<br>system. The two-part system is<br>packaged in tubes. The product<br>is available in two viscosities,<br>Fast Set and Regular Set. | Life Regular Set/Life Fast Set<br>are hard setting Calcium<br>Hydroxide cavity liners and pulp<br>capping agents to be used in<br>conjunction with all permanent<br>restorative techniques. Life is a<br>two-part, base/catalyst-<br>paste/paste system. The two-<br>part system is packaged in tubes.<br>The product is available in two<br>viscosities, Fast Set and Regular<br>Set. |
| Common<br>Name | Dental Cavity Liner and Pulp<br>Capping Agent | Dental Cavity Liner and Pulp<br>Capping Agent |
| Classification<br>Name | Liner, Cavity, Calcium<br>Hydroxide per CFR §<br>872.3250 | Liner, Cavity, Calcium<br>Hydroxide per CFR § 872.3250 |
| Class | II | II |
| Product Code | EJK | EJK |
| Base Formula | Formula per K012717 | No Change from K012717 |
| Catalyst<br>Formula for<br>Life Fast Set<br>(PN 16530)<br>Only | Contains 2-5% Fumed Silica<br>Aerosil R972,<br>CAS# 68611-44-9 | Contains 2-5% Fumed Silica<br>Cab-o-sil TS720,<br>CAS#67762-90-7 |
| Manufacturing<br>Location | Romulus, MI | Scafati, Italy |
| Packaging | Laminate Tubes | Polyfoil Tubes |
# Table 8.1: Predicate Life 2 (K012717) and Proposed Life Fast Set and Regular Set
## Conclusion
The modification of Life Fast Set (PN 16530) to replace the Fumed Silica, the move of manufacturing locations to Scafati, Italy, and the change to the packaging does not affect the intended use of the device nor does it alter the fundamental scientific technology of the device. The nonclinical testing demonstrates that the Proposed Life Regular Set/ Life Fast Set performs as well as the predicate device. Proposed Life Regular Set/Life Fast Set is substantially equivalent to the predicate Life 2 (K012717).
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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.