Temporis and Irix Plus are light-curing 3D-printing materials intended for fabricating indirect restorative for both anterior and posterior restorations, such as inlays, onlays, veneers, anterior or posterior crowns and bridges. Temporis is used for fabricating temporary dental restorations, Irix Plus is used for fabricating permanent dental restorations.
Device Story
Temporis and Irix Plus are methacrylate-based liquid photopolymer resins used for 3D printing custom dental restorations. Input data consists of digital scans of a patient's mouth; shape is determined via CAD/CAM software. The device transforms liquid resin into solid dental restorations (inlays, onlays, veneers, crowns, bridges) through laser-induced polymerization (stereolithography). Used in dental clinics or laboratories by dentists or dental technicians. The output is a physical, high-precision dental restoration. The healthcare provider uses the output to replace decayed tooth structure or provide temporary coverage, directly benefiting the patient by restoring dental function and aesthetics.
Clinical Evidence
No clinical data. Substantial equivalence is supported by non-clinical bench testing, including biocompatibility (ISO 10993-1, -3, -5, -10, -11, -23, ISO 7405) and performance testing per ISO 4049:2019 and ISO 10477:2020.
Technological Characteristics
Methacrylate-based liquid photopolymer resins. Solidification via laser-induced polymerization (stereolithography). Requires CAD/CAM system (scanner, design software, additive printer, post-cure unit). Non-sterile. Shelf life: 3 years. Complies with ISO 4049:2019 and ISO 10477:2020.
Indications for Use
Indicated for patients requiring indirect dental restorations, including inlays, onlays, veneers, and crowns/bridges (up to one pontic) for anterior or posterior teeth. Temporis is for temporary restorations; Irix Plus is for permanent restorations. Prescription use only.
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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Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health & Human Services logo on the left and the FDA acronym along with the full name of the agency on the right. The FDA part of the logo is in blue, with the acronym in a square and the full name, "U.S. Food & Drug Administration," written out next to it.
April 25, 2024
DWS s.r.l. Anna Maria Quality and Regulatory Via della Meccanica 21 Thiene. Vicenza 36016 ITALY
Re: K231142
Trade/Device Name: Temporis. Irix Plus Regulation Number: 21 CFR 872.3690 Regulation Name: Tooth Shade Resin Material Regulatory Class: Class II Product Code: EBF, EBG Dated: March 28, 2024 Received: March 28, 2024
Dear Anna Maria:
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 (the 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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
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Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30. Design controls; 21 CFR 820.90. Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
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 of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
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Sincerely,
# Michael E. Adjodha -S
Michael E. Adjodha, MChE, RAC, CQIA Assistant Director DHT1B: Division of Dental and ENT Devices OHT1: Office of Ophthalmic, Anesthesia, Respiratory, ENT and Dental Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
## Indications for Use
510(k) Number (if known) K231142
Device Name
Temporis - Irix Plus
Indications for Use (Describe)
Temporis and Irix Plus are light-curing materials intended for fabricating indirect restorative for both anterior and posterior restorations, such as inlays, onlays, veneers, anterior or posterior crowns and bridges.
Temporis is used for fabricating temporary dental restorations, Irix Plus is used for fabricating permanent dental restorations.
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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# 510(k) Summary-K231142
| Company Name: | DWS Srl |
|--------------------------------------|-----------------------------------------------------------|
| Company Address: | Via della Meccanica 21<br>36016 Thiene (Vicenza)<br>Italy |
| Company Phone: | +39 0445 810810 |
| Company e-mail: | E-mail: regulatory@dwssystems.com |
| Official Contact for Correspondence: | Anna De Maria - Quality and Regulatory<br>DWS s.r.l. |
| Phone: | +39 0445 810810 |
| E-mail: | E-mail: regulatory@dwssystems.com |
| Date Summary Prepared: | March 28, 2024 |
| DEVICE IDENTIFICATION<br>Trade name: | Temporis - Irix Plus |
| Generic/ Common Name: | Tooth Shade Resin Material |
| Regulation number: | 21 CFR 872.3690 |
| Regulation name: | Class II |
| Product Code: | Material, Tooth Shade, Resin |
| Panel: | EBF, EBG |
| | Dental |
#### PREDICATE DEVICES:
DWS identified the following legally marketed device as substantially equivalent: TERA HARZ, Graphy Inc., K202846
#### DEVICE DESCRIPTION:
Temporis and Irix Plus are methacrylate-based resins used to manufacture high-precision threedimensional custom-made dental restorations based on scanned images of the mouth of the patient. They are liquid resins that are subjected to solidification by laser induced polymerization - that is the process where monomers in liquid phase combine together to convert into polymers in solid phase - using dedicated 3D printing equipment working on the principle of stereolithography. The shape of the dental restoration is determined by a 3D stereolithographic drawing.
Temporis is used for manufacturing temporary dental restorations - such as inlays, onlays, veneers, anterior or posterior crowns and bridges (up to one pontic) - prior to the application of a permanent restoration. Irix Plus is used for manufacturing permanent dental restorations used to replace a decayed portion of tooth structure, like inlays, onlays, veneers, anterior or posterior crowns and bridges (up to one pontic).
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#### INDICATIONS FOR USE:
Temporis and Irix Plus are light-curing 3D-printing materials intended for fabricating indirect restorative for both anterior and posterior restorations, such as inlays, onlays, veneers, anterior or posterior crowns and bridges.
Temporis is used for fabricating temporary dental restorations, Irix Plus is used for fabricating permanent dental restorations.
### TECHNOLOGICAL CHARACTERISTICS AND SUBSTANTIAL EQUIVALENCE:
The side-by-side comparison between the subject and the predicate device shows that the devices have the same indications for use and are substantially equivalent in material composition and technological characteristics. The results of the tests performed show that the subject device meets the requirements mentioned in the applicable standards and confirm that the device performs similarly to predicate. Any differences between subject device and the predicate device are minimal and present no new risks. The noted differences, in comparison to the predicate device, raise no new questions of safety and effectiveness.
| Feature | TEMPORIS - IRIX PLUS<br>(Submitted Product) | PREDICATE DEVICE | CONCLUSION |
|-------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| K number | K231142 | K202846 | |
| Trade Name | Temporis, Irix Plus | TERA HARZ | |
| Manufacturer | D.W.S. S.r.l. | Graphy Inc. | |
| Regulation Number | 21 CFR 872.3690 | 21 CFR 872.3690 | same |
| Regulation<br>Name | Tooth Shade Resin Material | Tooth Shade Resin Material | same |
| Regulatory<br>Class | Class II | Class II | same |
| Product code | EBF, EBG | EBF, EBG | same |
| Indications For<br>Use/Intended Use | Temporis and Irix Plus are light-curing 3D-printing materials intended for fabricating for both anterior and posterior restorations, such as inlays, onlays, veneers, anterior or posterior crowns and bridges.<br>Temporis is used for fabricating temporary dental restorations, Irix Plus is intended used for fabricating permanent dental restorations. | TERA HARZ is indicated as an indirect restorative for both anterior and posterior restorations, including occlusal surfaces.<br>The TERA HARZ material is used for fabricating temporary or permanent restorations such as crowns and bridges, inlays, onlays, veneers and full crown restorations.<br>Fabrication of TERA HARZ requires a computer-aided and manufacturing (CAD/CAM) system that includes the following: scanner, design software, additive printer, and post-cure unit. | same<br>Both the subject and predicate device are light-curing 3D-printing materials intended for the manufacturing of temporary or permanent anterior and posterior restorations |
| Intended Users | dentist or dental technician | dentist or dental technician | same |
| Material | Methacrylate-based resins. | Methacrylate-based resins. | substantially equivalent |
| Material Shades | Similar to Common VITA-shades | Common VITA-shades | substantially equivalent |
| Product State | Liquid | Liquid | same |
| Manufacturing<br>Technology | 3D liquid (light-cured) print resin for dental | 3D liquid (light-cured) print resin for dental | same |
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| Feature | TEMPORIS - IRIX PLUS<br>(Submitted Product) | PREDICATE DEVICE | CONCLUSION |
|------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Sterility | Nonsterile | Nonsterile | same |
| Shelf Life | 3 years | 1 year | Different, however the results<br>of the tests carried on the<br>proposed device showed that<br>the performance of the device<br>after aging met the pre-<br>determined acceptance<br>criteria. Therefore, this<br>difference will not raise new<br>question on the safety and<br>effectiveness of the proposed<br>device. |
| Performance<br>Testing | Performed tests according to<br>ISO 4049:2019, Dentistry - Polymer-<br>based restorative materials<br>ISO 10477:2020, Dentistry -Polymer-<br>based crown and veneering materials. | Performed tests according to<br>ISO 4049:2013, Dentistry - Polymer-<br>based restorative materials<br>ISO 10477:2018, Dentistry -<br>Polymer-based crown and veneering<br>materials. | substantially equivalent<br>The bench testing conducted<br>on the subject device confirm<br>that the minor differences in<br>materials and technological<br>characteristics do not affect<br>the safety or effectiveness of<br>the device and demonstrate<br>that the subject device is<br>substantially equivalent to the<br>predicate device. No issues of<br>safety or effectiveness arise. |
| Biocompatibility | Meet requirements for ISO 10993-1 | Meet requirements for ISO 10993-1 | substantially equivalent |
| OTC or Rx | Rx | Rx | same |
The subject and predicate device share the same indications for use, they are both light-curing 3Dprinting materials indicated as indirect restorative for anterior and posterior restorations.
The predicate device can be used for both temporary and permanent restorations just as the proposed resins Temporis and Irix Plus.
The materials used for the subject device are the same or similar to those used for the predicate device. Both the devices are methacrylate-based resins for 3D printing to be used to create a customized dental restoration. Methacrylate based resins are well known materials, commonly used in the dental industry for temporary and permanent dental restorations. The biocompatibility and performance testing show that slight differences in material composition do not raise any questions of safety or effectiveness; the subject device has demonstrated suitability for intended use through material non-clinical performance testing.
The proposed and predicate device are liguid photopolymers that are subjected to solidification by laser induced polymerization. Fabrication of the dental restorations requires for both the subject and the predicate device a computer-aided and manufacturing (CAD/CAM) system that includes the following: scanner, design software, additive printer, and post-cure unit.
The subject device has similar physical properties as the predicate device. The difference in the proposed shelf life will not raise new question on the new safety and effectiveness of the subject device as shown by the results of the stability testing performed.
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### SUBSTANTIAL EQUIVALENCE DISCUSSION:
#### DISCUSSION OF NONCLINICAL TESTS
Nonclinical tests were conducted to demonstrate substantial equivalence to the predicate device. The test results demonstrated that the proposed devices comply with the applicable sections of the standards listed below:
### Biocompatibility:
The materials used to manufacture the subject device are the same/similar to those used for the predicate device. All the materials used to manufacture the subject device are largely used for other legally marketed devices under the same product code.
Biocompatibility has been assessed according to the requirements of
- ISO 10993-1:2018 Biological evaluation of medical devices, Evaluation and testing within a risk management process.
- ISO 7405:2018 Dentistry - Evaluation of biocompatibility of medical devices used in dentistrv
The following biocompatibility tests were performed:
- Cytotoxicity, ISO 10993-5: 2009 Biological evaluation of medical devices, Tests for in vitro cytotoxicity;
- Oral mucosa irritation, ISO 10993-23:2021 Biological evaluation of medical devices, Tests for irritation;
- Skin Sensitization, ISO 10993-10: 2010 Biological evaluation of medical devices, Tests for irritation and skin sensitization;
- Acute Systemic Toxicity, ISO 10993-11:2017 Biological evaluation of medical devices, Tests for systemic toxicity;
- Subchronic Systemic Toxicity, ISO 10993-11:2006 Biological evaluation of medical devices, Tests for systemic toxicity;
- Genotoxicity, ISO 10993-3:2014 Biological evaluation of medical devices, Tests for genotoxicity, carcinogenicity and reproductive toxicity.
The subject device meets requirements for ISO 10993-1 as the predicate device.
Performance tests:
The proposed device was tested and met the applicable requirements per ISO 10477:2020 Dentistry -Polymer-based crowns and veneering materials and ISO 4049:2019, Dentistry -Polymer-based restorative materials.
The non-clinical tests performed confirmed that the minor differences in materials and technological characteristics in respect to the predicate device do not affect the safety or effectiveness of the proposed device.
## CONCLUSION:
All the necessary safety and performance tests in support of substantial equivalence determination were conducted. The tests demonstrate that the subject Temporis and Irix Plus are safe, effective and performs as well as the predicate device. The minor differences between the devices do not raise any new issues of safety or efficacy.
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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.
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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.
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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.
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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.
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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.
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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.
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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.