This device is indicated for: - Base/liner under direct restorations . - Pit and fissure sealant . - Veneer Cementation . - Undercut blockout ● - Restoration of minimal, shallow, Class V preparations ● - Restoration of minimally invasive cavity preparations, including air abrasion and tunnel . preparations - . Repair of small defects in composite and ceramic indirect restorations including veneers, inlays, onlays, crowns and bridges - . Repair of small marginal defects in direct restorations - Repair of acrylic temporary marginal defects .
Device Story
3M™ LVR System is a single-part, light-curing restorative composite; utilizes methacrylate resin chemistry with inorganic filler. Used by dental professionals in clinical settings for restorative dentistry, including base/liner application, pit and fissure sealing, veneer cementation, undercut blockout, and repair of small defects in direct/indirect restorations. Device is applied to the tooth structure or restoration site and light-cured to achieve polymerization. Output is a hardened dental material that restores tooth form or functions as a luting agent. Benefits include minimally invasive treatment options and repair capabilities for various dental restorations.
Clinical Evidence
Bench testing only. Tests included Watts shrinkage, wear resistance, compressive strength, diametral tensile strength, film thickness, Thermal Expansion Coefficient, flow, and water sorption. The device meets ISO 4049-1988 standards for resin-based filling materials.
Technological Characteristics
Single-part, light-curing restorative composite; methacrylate resin chemistry with inorganic filler. Complies with ISO 4049-1988. Form factor is a flowable paste. No electronic components or software.
Indications for Use
Indicated for dental patients requiring base/liner placement, pit and fissure sealing, veneer cementation, undercut blockout, restoration of minimal/shallow Class V or minimally invasive cavity preparations, and repair of small defects in direct/indirect restorations or acrylic temporaries.
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.
Predicate Devices
DYRACT® FLOW, DENTSPLY Caulk
AELITEFLO™, Bisco Dental Products
Revolution Flowable Paste Product, Kerr Corp.
TETRIC® FLOW Flowable Ceromer, Ivoclar Vivadent
Submission Summary (Full Text)
{0}------------------------------------------------
AUG. 2. 1999 1:37PM
AUG -- 9 1999
## 510(k) SUMMARY
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1980 and 21 CFR \$807.92.
| Name: | Lael J. Pickett | |
|----------------------|-----------------------------------------------------|--|
| | Regulatory Affairs Specialist | |
| Address: | 3M Dental Products Laboratory | |
| | 3M Center, Building 260-2B-12 | |
| | St. Paul, MN 55144-1000 | |
| Telephone: | 612-733-3594 | |
| Fax: | 612-736-0990 | |
| Trade Name: | 3M™ LVR System | |
| Common Names: | Tooth shade resin material, light cure restorative | |
| | Resin cement, luting composite, luting cement | |
| | Dental sealant, pit and fissure sealant. | |
| Classification Name: | 21 CFR § 872.3690 Tooth Shade Resin Material | |
| | 21 CFR § 872.3275 Dental cement, Class II. | |
| | 21 CFR § 872.3765 Pit and fissure sealant, Class II | |
| Predicate Devices: | DYRACT® FLOW, DENTSPLY Caulk | |
| | AELITEFLO™, Bisco Dental Products | |
| | Revolution Flowable Paste Product, Kerr Corp. | |
| | TETRIC® FLOW Flowable Ceromer, Ivoclar Vivadent | |
3M™ LVR System is a single part, light curing restorative composite. This device, as well as the predicate devices, are based on methacrylate resin chemistry incorporating an inorganic filler.
The 3M™ LVR System can be used as a: baselliner under direct restorations, pit and fissure sealant, veneer cement, undercut blockout, restorative for minimal - shallow Class V preparations, restorative for minimally invasive cavity proparations (including air abrasion and tunnel preparations), repair of small defects in composite and ceramic indirect restorations (including veneers, inlays, crowns and bridges), repair of small marginal defects in direct restorations and for repair of acrylic temporary marginal defects. This product can be used for both anterior and posterior restorations and functions as a permanent veneer cement.
3M™ LVR System and predicate devices have similar technological characteriatios as indicated by their methacrylate resin chemistry. This is further validated by the comparative results of the bench tests conducted. These tests include Watts shrinkage, wear resistance, compressive strength, diametral tensile strength, film thickness, Thermal Expansion Coefficient, flow and water sorption.
The 3M™ LVR System also meets ISO 4049-1988 "Dentistry - Resin-based filling materials".
Based on the conclusions drawn from the safety analysis conducted for this device and the results of the bench testing, 3M™ LVR System II Plus is safe, effective and performs as well or better than the predicate devices mentioned above.
3M™ LVR System K991961 August 2, 1999
{1}------------------------------------------------
Image /page/1/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo features a stylized depiction of an eagle or bird-like figure with three curved lines forming its body and wings. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the bird symbol.
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
AUG - 9 1999
Mr. Lael J. Pickett Regulatory Affairs Specialist 3M Dental Products Laboratory 3M Center, Building 260-2B-09 St. Paul, Minnesota 55144-1000
K991961 Re: 3MTM LVR SYSTEM Trade Name: Requlatory Class: II Product Code: EBF Dated: June 2, 1999 Received: June 10, 1999
Dear Mr. Pickett:
We have reviewed your Section 510(k) notification of intent to we have reviewed your below and we have determined the market the device relies suivalent (for the indications for use device is substancially equilies (marketed in interstate commerce scated in the Cholorals, is enactment date of the Medical Device prior to hay 20, 1970) one base been reclassified in accordance Amendicites) or oo of the Federal Food, Drug, and Cosmetic Act You may, therefore, market the device, subject to the (Act). (Acc). Tod may) choresons of the Act. The general controls general concrors provisions e requirements for annual registration, proving of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be (Spectur controls) Stronal controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Good Manufacturing Practice for Medical Devices: General (GMP) requlation (21 CFR Part 820) and that, through periodic GMP inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
{2}------------------------------------------------
Page 2 - Mr. Pickett
This letter will allow you to begin marketing your device as Inis lected will arrow you ou begdescribed in your stow, promise of your device to a legally marketed of Subscuncial equivalisin a classification for your device and thus, permits your device to proceed to the market. enab, Delmire specific advice for your device on our labeling requlation (21 CFR Part 801 and additionally 809.10 for in xitro reguration (ar orn), please contact the Office of Compliance at (1801) 594-4692. Additionally, for questions on the promotion and (301) 394-4022. Addressmarly) ase contact the Office of Compliance Also, please note the regulation entitled, at (301) 594-4639. "Misbranding by reference to premarket notification" (21 CFR Other general information on your responsibilities under 807.97) . . our. The ocher general from the Rivision of Small Manufacturers ene may be obsolisfree number (800) 638-2041 or (301) 443-6597 Assistance ac Its Coll Irec namby (voo) (voo) (voo) cdrh/dsmamain.html").
Sincerely yours,
Timothy A. Ulatowski
Director Division of Dental, Infection Control, and General Hospital Devices Office of Device Evaluation Center for Devices and Radioloqical Health
Enclosure
{3}------------------------------------------------
510(k) Number (if known): K991961
Device Name: 3M™ LVR System_
Indications For Use: This device is indicated for:
- Base/liner under direct restorations .
- Pit and fissure sealant .
- Veneer Cementation .
- Undercut blockout ●
- Restoration of minimal, shallow, Class V preparations ●
- Restoration of minimally invasive cavity preparations, including air abrasion and tunnel . preparations
- . Repair of small defects in composite and ceramic indirect restorations including veneers, inlays, onlays, crowns and bridges
- . Repair of small marginal defects in direct restorations
- Repair of acrylic temporary marginal defects .
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
| | Concurrence of CDRH, Office of Device Evaluation (ODE) | | | |
|------------------------------------------|--------------------------------------------------------|----|----------------------|--|
| Prescription Use<br>(Per 21 CFR 801.109) | ✓ | OR | Over-The-Counter Use | |
| August 2, 1999 | (Division Sign-Off)<br>Division of Dental, Infection Control,<br>and General Hospital Devices | Page x |
|----------------|-----------------------------------------------------------------------------------------------|--------|
| 510(k) Number | K99961 | |
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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.