PalaXpress ultra is a denture base material to be used with injection or pouring techniques for fixed and removable dentures: Injection technique: Full maxillary and mandibular prostheses Implant overdenture Pour technique: Implant overdenture Partial dentures, multiple or single saddles Marginal contour and reshaping Repair and additions Relines Dental splints
Device Story
PalaXpress ultra is an auto-polymerizing acrylic resin for fabrication, repair, and relining of denture bases, implant-supported prostheses, and dental splints. The system consists of powder (polymethyl methacrylate) and liquid (methyl methacrylate and dimethacrylates). It is used in dental clinics or laboratories via injection or pouring techniques. For injection, powder and liquid are mixed in a 2:1 ratio; for pouring, a specific ratio is used. Polymerization occurs in a pressure vessel at 55°C and 2 bar for 30 minutes. The device provides increased fracture resistance compared to conventional materials, enhancing durability for the patient. It is intended for professional use by dental clinicians or technicians.
Clinical Evidence
No clinical trials were conducted. Evidence consists of a clinical evaluation report per MEDDEV 2.7.1, confirming the material is a well-known type of acrylic denture base with expected performance. Biocompatibility was evaluated per ISO 10993-1 (cytotoxicity, sensitization, irritation, subacute/subchronic toxicity, genotoxicity) with positive results. Physical properties were verified against ISO 20795-1:2008. Risk management was performed per ISO 14971.
Technological Characteristics
Auto-polymerizing acrylic resin. Components: Polymethyl methacrylate powder, methyl methacrylate and dimethacrylate liquid. Complies with ISO 20795-1:2008 for denture base polymers. Biocompatibility per ISO 10993-1. Processing: Pressure vessel polymerization (55°C, 2 bar, 30 min). Supplied in HD-PE bottles and brown glass bottles.
Indications for Use
Indicated for use as a universal high fracture resistant denture base material for fixed or removable dentures, including full maxillary and mandibular prostheses, implant overdentures, partial dentures (multiple or single saddles), marginal contouring, reshaping, repairs, additions, relines, and dental splints.
Regulatory Classification
Identification
A denture relining, repairing, or rebasing resin is a device composed of materials such as methylmethacrylate, intended to reline a denture surface that contacts tissue, to repair a fractured denture, or to form a new denture base. This device is not available for over-the-counter (OTC) use.
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K110037
APR 2 9 2011
### 510(k) Summary of Safety and Effectiveness of PalaXpress ultra
#### (1) Submitter's name
Heraeus Kulzer, LLC (for Heraeus Kulzer, GmbH) 300 Heraeus Way South Bend, Indiana 46614
Contact person: Cheryl V. Zimmerman + 574 299-5444 Phone:
Date summary was prepared: 2011-03-11
#### (2) Name of Device
Trade name - PalaXpress ultra Classification name - Denture relining, repairing, or rebasing resin (872.376) Class - II
#### (3) Substantial equivalence
PalaXpress ultra, liquid and powders, is substantially equivalent with Palapress vario, liquid and powders, 510(k) No. K902115 Main component of both liquids is methyl methacrylate and dimethacrylates, of the powders polymethyl methacrylate
#### (4) Description of the device
PalaXpress ultra was developed as an auto-polymerizing denture and differs from the substantially equivalent device Palapress vario in the increased fracture resistance compared with that material. The product was developed as an autopolymerizing universal denture base material.
The product consists of powder in various shades (pink veined, link live, pink opaque, R50 veined, clear, light pink, light reddish pink, shade 200, dark pink) and liquid. 80 ml or 500 ml of liquid is supplied in brown glass bottles in an outer cardboard box, the 100 g or 1000 g powder is supplied in square HD-PE bottles in a outer cardboard box. 12000 g are available upon request.
To make sure denture, powder and liquid are mixed, in a ratio of 30 g : 15 ml (2:1) for the injection procedure, and in a ratio of 10 g powder : 7 ml liquid for the pouring procedure, Polymerization time in the pressure vessel is 30 min, at a water temperature 55°C and a pressure of 2 bar.
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The material has a shelf life of 42 months and complies with the requirements of ISO 20795-1:2008 for denture base polymers.
#### (5) Intended use
PalaXpress ultra is a denture base material to be used with injection or pouring techniques for fixed and removable dentures:
Injection technique: Full maxillary and mandibular prostheses Implant overdenture Pour technique: Implant overdenture Partial dentures, multiple or single saddles Marginal contour and reshaping Repair and additions Relines Dental splints
#### (6) Summaries and Conclusion
- (a) Technological Characteristics
PalaXpress ultra was developed as an auto-polymerizing resin with increased fracture resistance. In all other properties it is compared with the essentially equivalent auto-polymerizing denture base resin Palapress vario. The attained increase fracture resistance has no influence during the fabrication of the denture, but will, in the final dental prosthesis, benefit the patient in so far as it will not break as easily as a denture fabricated from a conventional autopolymerizing denture base material.
#### (b) Nonclinical tests and clinical tests/evaluations
- (1) Nonclinical tests: In accordance with the Medical Device Directive 93/42/EEC and National European medical device legislation, any medical device, must be evaluated by the legal medical device manufacturer regarding its clinical performance and safety. This includes an evaluation of biocompatibility in accordance with ISO 10993-1. As PalaXpress ultra is exclusively used for the fabrication, completion, repair or relining of denture bases as well as implantsupported prostheses and dental splints, it can be concluded that there is only contact with the mucosa. The duration of contact of PalaXpress ultra is > 30 days. According to this classification, (DIN EN ISO 10993-1, Table 1) the following tests must be considered:
Cytotoxicity, Sensitization, Irritation / intracutaneous reactivity, Subacute / Subchronic toxicity, Genotoxicity. On the basis of the test results, the biocompatibility of PalaXpress ultra in the aforementioned indication was documented in a biocompatibility evaluation report and the benefit / riskrelation has been judged as positive.
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# Heraeus
- (2) Clinical evaluation
In accordance with the Medical Device Directive 93/24/EEC and National European medical device evaluation, any medical device is requested to be evaluated by the legal medical device manufacturer regarding its clinical performance and safety. This includes a clinical evaluation in accordance with MEDDEV 2.7.1, which is intended to critically evaluate the clinical benefits of the medical device in comparison to its potential risks. Therefore, a clinical evaluation is part of the compulsory risk management process according to ISO 14971, and critical findings must further be considered in the current risk management process of the medical device manufacturer responsible for the evaluated device.
On this background, the clinical evaluation was performed in order to comply with the current European medical device legislation, in particular with MEDDEV 2.7.1. This critical evaluation followed the procedures outlined in the corresponding clinical evaluation plan.
PalaXpress ultra is classified according to annex IX of council directive 93/42/EEC as a class lla medical device.
PalaXpress ultra represents as well-known type of acrylic denture base material which has proven to exhibit the expected performance and clinical effectiveness. There is no hint for undesirable effect and potential risks when PalaXpress ultra is applied according to the instructions for use. Considering the evaluated data and technical results for PalaXpress ultra it is concluded that the product will exhibit that claimed clinical and technical performance and that potential undesirable clinical effects and risks seem well controlled and acceptable when weighed against their benefits in dentistry. Therefore, the benefits versus risks ratio was stated to be positive for PalaXpress ultra, provided that the product is applied in accordance with its intended use according to the manufacturer's information for use. Nevertheless, a risk for irritation or sensitization in susceptible patients or users due to the contact with PalaXpress ultra cannot be excluded.
The clinical report was carried out in accordance with MEDDEV 2.7.1 and followed the provisions of the corresponding clinical evaluation plan.
#### (c) Conclusion
The risk potential of the denture base resin PalaXpress ultra was proven. All properties of the product were verified successfully.
The biological compatibility of the denture base resin was investigated to evaluate the toxicological risk. A biological evaluation report has confirmed that the product PalaXpress ultra meets the requirements of ISO 10993 standard. The results were discussed in the biological evaluation report and the benefit / risk relation has been judge as positive.
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Image /page/3/Picture/0 description: The image shows the word "Heraeus" in a stylized font. The letters are outlined with a thin black line, giving them a distinct appearance. The word is presented in a clear and legible manner.
The physical properties of PalaXpress ultra were determined in accordance with ISO 20795-1 for denture base polymers. All properties comply with and exceed the requirements of the standard. This is stated in section (4),
Based on the results of the clinical evaluation report it is concluded that the product can be expected to exhibit the claimed technical performance and that potential undesirable clinical effects and risks seem well controlled and acceptable when weighed against their benefits in dentistry. The risk analysis according to ISO 14971 was carried out for PalaXpress ultra and showed that the application of the product according to the manufacturer's instruction for use can be considered as safe.
PalaXpress ultra meets all relevant requirements for denture base resins in accordance with the Medical Device Directive 93/42/EEC and National European medical device legislation. Based on the actual facts PalaXpress ultra is considered to be effective and safe when used in accordance with the manufacturer's instructions for use.
Wehrheim, April 29, 2011
Dr. K. Ruppert
A. Keishold
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Image /page/4/Picture/1 description: The image shows the logo for the Department of Health & Human Services USA. The logo is a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" written around the perimeter. Inside the circle is an abstract image of an eagle.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Ms. Cheryl Zimmerman Director, Quality Assurance & Regulatory Affairs Heraeus Kulzer, LLC 300 Heraeus Way South Bend, Indiana 46614
APR 2 9 2011
Re: K110037
Trade/Device Name: PalaXpress Ultra Regulation Number: 21 CFR 872.3760 Regulation Name: Denture Relining, Repairing or Rebasing Resin Regulatory Class: II Product Code: EBI Dated: April 1, 2011 Received: April 6, 2011
Dear Ms. Zimmerman:
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 mendments, 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 the I cuclar F ood, Drug, and Cosmono, therefore, market the device, subject to the general approvisions 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 (1 vir 1), it may of basyone adde of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Eederal Register.
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#### Page 2- Ms. Zimmerman
Please be advised that FDA's issuance of a substantial equivalence determination does not Frease be auvised that I DT 3 losaaliso on that your device complies with other requirements Incall that IDA has made a deceminary and regulations administered by other Federal agencies. of the Act of ally I edelar statules and regirements, including, but not limited to: registration Tourinust comply with an the Hot reveal 801); medical device reporting and namig (21 OF R F & F & F & F & F & C S (21 CFR 803); good manufacturing of (reporting of medical as not for the quality systems (QS) regulation (21 CFR Parl 820); practice requirements as occreent in the 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), 11 you desire specific au fida gov/AboutFDA/CentersOffices/CDRH/CDRHOffices prease go to intp. for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to Compilance: "Theo, preace in to are 807.97). For questions regarding the reporting of promation nothlead.org ( 1 CFR Part 803), please go to http://www.fda.goy/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 I ou nikel of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
h for
Anthony D. Watson, B.S., M.S., M.B.A. Director Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known): /( / 0 0 3 7
Device Name:
Indications for use:
Universal high fracture resistant denture base material. Used with injection or pouring techniques for fixed or removable dentures.
Injection procedure:
- Full maxillary and mandibular prostheses
- Implant over denture
- Pouring procedure:
- Implant over denture
- Partial dentures. Multiple or single saddles
- Marginal contour and reshaping
- Repairs and additions
- Relines
- Dental splints
| Prescription Use<br>(Part 21 CFR 801 Subpart D) | X |
|-------------------------------------------------|---|
|-------------------------------------------------|---|
AND/OR
| Over-The-Counter Use<br>(21 CFR 807 Subpart C) | |
|------------------------------------------------|--|
|------------------------------------------------|--|
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
| Concurrence of CDRH, Office of Device Evaluation (ODE) | |
|--------------------------------------------------------|--|
|--------------------------------------------------------|--|
Tusar Kumpa
(Division Sign-Off) Division of Anesthesiology, General Hospital Infection Control, Dental Devices
Page _1_ of __1_
510(k) Number: K110037
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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
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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.
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.