The CREOKORREKT Aligner is indicated for the treatment of tooth malocclusion in patients with permanent dentition (i.e. all second molars). The aligner positions teeth by way of continuous gentle force.
Device Story
CREOKORREKT Aligners are custom-made, clear, thermoformed polyurethane and copolyester orthodontic appliances. Input: intraoral scans or PVS impressions of patient dentition. Process: dentist prescribes treatment; CreoDent Prosthetics imports scans into dental design software (Ortho System or Autolign) to plan sequential tooth movement; software generates series of models; models 3D printed; aligners thermoformed over models. Output: series of removable clear plastic trays. Use: clinic; prescribed by dentist; worn by patient. Benefit: alternative to conventional wire/bracket orthodontics; provides gentle continuous force to move teeth to planned positions.
Clinical Evidence
Bench testing only. Includes physical properties testing (ASTM D638, D790, D570, D5420) and biocompatibility testing (ISO 10993-3, 5, 10, 11). Manufacturing process validation confirmed the aligners meet pre-established acceptance criteria for fit, form, and function.
Indicated for treatment of tooth malocclusion in patients with permanent dentition (all second molars).
Regulatory Classification
Identification
An orthodontic plastic bracket is a plastic device intended to be bonded to a tooth to apply pressure to a tooth from a flexible orthodontic wire to alter its position.
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image contains the logos of the Department of Health and Human Services and the Food and Drug Administration (FDA). The Department of Health and Human Services logo is on the left, and the FDA logo is on the right. The FDA logo includes the letters "FDA" in a blue square, followed by the words "U.S. Food & Drug Administration" in blue text.
October 13, 2022
CreoDent Prosthetics LTD % April Lee Regulatory Affairs Consultant Withus Group Inc. 106 Superior. Irvine, CA 92620
Re: K211427
Trade/Device Name: CREOKORREKT Aligners Regulation Number: 21 CFR 872.5470 Regulation Name: Orthodontic Plastic Bracket Regulatory Class: Class II Product Code: NXC Dated: September 14, 2021 Received: September 15, 2021
Dear April Lee:
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. 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 located 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.
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
{1}------------------------------------------------
801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 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 4. Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 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).
Sincerely,
For Michael E. Adjodha, M. ChE. 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
{2}------------------------------------------------
## Indications for Use
510(k) Number (if known) K211427
Device Name CREOKORREKT Aligners
Indications for Use (Describe)
The CREOKORREKT Aligner is indicated for the treatment of tooth malocclusion in patients with permanent dentition (i.e. all second molars). The aligner positions teeth by way of continuous gentle force.
> Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
#### CONTINUE ON A SEPARATE PAGE IF NEEDED.
This section applies only to requirements of the Paperwork Reduction Act of 1995.
#### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
{3}------------------------------------------------
# 510(k) Summary
This summary is being submitted in accordance with requirements of 21 CFR Part 807.92.
#### Submitter
CreoDent Prosthetics LTD Calvin Shim 545 West 45th Street 11FL New York, NY 10036 USA Email: calvincreo@gmail.com Tel. +82-53-589-3541 Fax. +82-53-289-7922
## Official Correspondent
Withus Group Inc. April Lee 106 Superior, Irvine, CA 92620 USA Email: withus6664@gmail.com Phone: 1-909-274-9971 Fax: 1-909-460-8122
#### Device Information
- Proprietary Name: CREOKORREKT Aligners
- Common Name: Orthodontic Sequential Aligner
- Classification Name: Orthodontic plastic bracket
- Classification: Class II, 21 CFR 872.5470 ●
- Classification Product Code: NXC
- Panel: Dental .
- . Date Prepared: 10/12/2022
## Predicate Devices:
Primary Predicate K192846, Argen Clear Aligner by Argen Corporation
Reference Device K192596, uLab Systems Dental aligner by uLab Systems Inc.
## Indication for Use:
The CREOKORREKT Aligner is indicated for the treatment of tooth malocclusion in patients with permanent dentition (i.e. all second molars). The aligner positions teeth by way of continuous gentle force.
## Device Description:
CREOKORREKT Aligners consist of a series of dentist-prescribed, thin, clear, thermoformed polyurethane and copolyester orthodontic appliances. The aligners provide gentle continuous force to move the patient's teeth in small increments from their original positions to planned positions. CREOKORREKT Aligners are intended as an alternative to conventional wire and bracket orthodontic technology and fixed appliances for the treatment of patients with tooth malocclusion.
A dentist determines a treatment plan based on the assessment of the patient's teeth and prescribes the CREOKORREKT. To obtain the dimensions and details of a patient's dentition, a dentist takes intraoral
{4}------------------------------------------------
scanning or a physical impression (PVS Impression) and sends them with a prescription to CreoDent Prosthetics LTD.
With PVS impressions, physical models are fabricated and scanned. Scanned data are directly imported into dental design software for planning. CreoDent Prosthetics LTD designs the process of treatment by creating a series of the sequential model intended to gradually move the patient's teeth to the desired position in accordance with the dentist's prescription utilizing the dental design software. The doctor reviews and approves the treatment scheme. CreoDent Prosthetics LTD fabricates a series of models for thermoforming.
#### Summary of Technology Characteristics
| Subject Device | Primary Predicate | Reference Device | |
|--------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Device Name | CREOKORREKT | Argen Clear Aligner | uLab Systems Dental aligner |
| 510(k) Number | K211427 | K192846 | K192596 |
| Manufacturer | CreoDent Prosthetics LTD | Argen Corporation | uLab Systems Inc. |
| Classification<br>Number | 21 CFR 872.5470, Class II<br>Orthodontic Plastic Bracket | 21 CFR 872.5470, Class II<br>Orthodontic Plastic Bracket | 21 CFR 872.5470, Class II<br>Orthodontic Plastic Bracket |
| Product Code | NXC | NXC | NXC |
| Indications<br>for Use | The CREOKORREKT Aligner<br>is indicated for the treatment of<br>tooth malocclusion in patients<br>with permanent dentition (i.e.<br>all second molars). The aligner<br>positions teeth by way of<br>continuous gentle force. | The Argen Clear Aligner and<br>Argen Clear Aligner Premium<br>are indicated for the treatment<br>of tooth malocclusion in<br>patients with permanent<br>dentition (i.e. all second<br>molars). The aligner positions<br>teeth by way of continuous<br>gentle force. | The uLab Systems Dental<br>Aligner is indicated for the<br>alignment of permanent teeth<br>during orthodontic treatment<br>of malocclusions by way of<br>continuous gentle forces. |
| Mode<br>of action | The appliance applies gentle<br>forces on teeth according to the<br>plan prescribed by the doctor. | The appliance applies gentle<br>forces on teeth according to the<br>plan prescribed by the doctor. | Orthodontic movement<br>occurs through continuous<br>gentle forces applied to the<br>dentition as each tooth<br>follows the programmed<br>displacement based on a<br>doctor's prescription. |
| Description<br>of Use | Each removable preformed<br>plastic tray is worn by the<br>patient as prescribed by the<br>doctor, usually a few weeks<br>prior to using the next sequential<br>aligner tray. | Each removable preformed<br>plastic tray is worn by the<br>patient as prescribed by the<br>doctor, usually a few weeks<br>prior to using the next<br>sequential aligner tray. | A series of custom-made<br>removable clear plastic<br>orthodontic aligners that<br>sequentially position teeth by<br>way of continuous gentle<br>force. |
| Material | Zendura A (thin thermoformed<br>polyurethane) or Zendura FLX<br>(copolyester and polyurethane<br>composite) | Thermoplastic polyurethane<br>polyester composite resin | Zendura A (thin<br>thermoformed polyurethane)<br>or Zendura FLX (copolyester<br>and polyurethane composite) |
The subject device is substantially equivalent to the current cleared devices. Comparison demonstrating Substantial Equivalence follows:
{5}------------------------------------------------
| Manufacturing<br>processes | - Scanning<br>- Treatment planning<br>- aligner model by 3D printer<br>- pressure molding by heating<br>machine<br>- laser engraving | - Scanning<br>- Treatment planning<br>- aligner model by 3D printer<br>- pressure molding by heating<br>machine | - Scanning<br>- Treatment planning<br>- aligner model by 3D printer<br>- pressure molding by heating<br>machine |
|--------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------|
| Thickness of material | 0.76mm | - | - |
| Color of material | Clear | Clear | Clear |
| Software used<br>for treatment<br>planning/manufacture | Ortho System TM; 3Shape A/S<br>(K180941)<br>Autolign; Diorco (K192847) | Ortho System TM; 3Shape A/S<br>(K180941) | uDesign; uLab Systems Inc.<br>(K171295) |
| Prescription Use | Rx | Rx | Rx |
| Biocompatibility | Yes, shown to meet<br>requirements of ISO 10993 | Yes, shown to meet<br>requirements of ISO 10993 | Yes, shown to meet<br>requirements of ISO 10993 |
## SE Discussion
The subject device and primary predicate, K192846 have same indications for Use, mode of action, description of use, thermoformed copolyester and polyurethane composite material (Zendura FLX), manufacturing process (i.e., Scanning, Treatment planning, Thermoforming, etc.), thickness of material, color of material, and treatment planning software.
The differences between the subject device and primary predicate are the material (Zendura A) and using software (Autolign: Diorco). To support the discrepancy of the different material, K192596 was added as the reference device for the substantial equivalence.
Zendura FLX and Zendura A have been produced in only one film format for each. The film is 0.76mm in thickness. Bay Materials, LLC supplies sheets in different widths and lengths or diameters but all of these are cut from the same film. Therefore, the material of the subject device is identical to that of the predicate devices.
To support the discrepancy of the different software used, a manufacturing process validation test was performed and it showed that no significant differences were found between the designs using Autolign (Diorco, K192847) and Ortho Analyzer (3shape, K180941)
#### Non-Clinical Testing
Non-clinical testing data are submitted to demonstrate substantial equivalence.
- Physical properties testing of the material (Zendura A) according to ASTM D6387, ASTM D790, ASTM D570 and ASTM D5420
- Biocompatibility Testing of the material (Zendura FLX and Zendura A) according to ISO 10993-3,5,10, and 11
#### Manufacturing Process Validation Testing
This test was conducted to validate the manufacturing process of the final product. It evaluated the fit, form, and function of the final product by a trained physician as compared to software treatment design. This test has met the pre-established acceptance criteria. The test results showed that the manufacturing process of the subject aligner achieves its intended use, and it is substantially equivalent to the predicate devices.
#### Conclusion
In accordance with the Federal Food, Drug and Cosmetic Act, 21 CFR Part 807, and based on the information provided in this premarket notification, CreoDent Prosthetics LTD concludes that the CREOKORREKT aligner is substantially equivalent to the predicate devices as herein.
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
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.