Crown HT

K242277 · Sprintray, Inc. · EBF · Oct 1, 2024 · Dental

Device Facts

• Record ID: K242277
• Device Name: Crown HT
• Applicant: Sprintray, Inc.
• Product Code: EBF · Dental
• Decision Date: Oct 1, 2024
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 872.3690
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

SprintRay Crown HT is a light-curable polymerizable resin intended to be used for the fabrication of; individual and fixed definitive full single crowns; definitive partial crowns in anterior and posterior area, individual and fixed single veneers; artificial teeth for dental prostheses, which are used for removable definitive full dentures; and individual and removable monolithic full and partial dentures in dental offices and laboratories. The material is an alternative to traditional restorative dental material.

Device Story

Photo-polymer methacrylate resin; used with 3D printer and scanned 3D dental images; layer-by-layer printing to create dental prosthetics. Used in dental offices/labs by professionals. Requires CAD/CAM system, optical impression system, 3D printer, and curing light. Resin cured post-printing, then trimmed/cleaned. Provides alternative to traditional restorative materials; enables custom-fit definitive dental appliances.

Clinical Evidence

Bench testing only. Biocompatibility testing per ISO 10993-1, -3, -5, -10, -11, -23. Performance testing per ISO 10477 and ISO 4049, including flexural strength (>124 MPa), flexural modulus (>7000 MPa), water sorption (11.15 µg/mm³), water solubility (0.49 µg/mm³), and free monomer extraction. All results met or exceeded requirements and were comparable to predicate.

Technological Characteristics

Photo-polymer methacrylate resin; pourable liquid form. Cured via light-based 3D printing. Complies with ISO 10477 (flexural strength, sorption, solubility, surface finish), ISO 4049 (radio opacity), and ISO 20795-1 (free monomer). Non-sterile delivery. Requires external CAD/CAM system and curing equipment.

Indications for Use

Indicated for fabrication of definitive dental prosthetics including single crowns, partial crowns (anterior/posterior), single veneers, and artificial teeth for removable dentures. For use by dental professionals in offices and laboratories.

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

• Digital Crown (K222623)

Submission Summary (Full Text)

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October 1, 2024

SprintRay Inc. Sara Moghtadernejad Regulatory Affairs 2710 Media Center Drive. Suite 100A Los Angeles, California 90065

Re: K242277

Trade/Device Name: Crown HT Regulation Number: 21 CFR 872.3690 Regulation Name: Tooth Shade Resin Material Regulatory Class: Class II Product Code: EBF, EBI, EBG, ELM, PZY Dated: August 1, 2024 Received: August 1, 2024

Dear Sara Moghtadernejad:

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.

All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-device-advicecomprehensive-regulatory-assistance/unique-device-identification-system-udi-system.

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-comprehensive-regulatory

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assistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email ([e-mail]) or phone [phone] or 301-796-7100).

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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# Indications for Use

Submission Number (if known)

K242277

Device Name

Crown HT

Indications for Use (Describe)

SprintRay Crown HT is a light-curable polymerizable resin intended to be used for the fabrication of; individual and fixed definitive full single crowns; definitive partial crowns in anterior and posterior area, individual and fixed single veneers; artificial teeth for dental prostheses, which are used for removable definitive full dentures; and individual and removable monolithic full and partial dentures in dental offices and laboratories. The material is an alternative to traditional restorative dental material.

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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## K242277

## 510(k) SUMMARY

## Crown HT

| Submitter: | SprintRay Inc.<br>2710 Media Center Drive, Suite 100A<br>Los Angeles, CA 90065 |
|------------|--------------------------------------------------------------------------------|
|------------|--------------------------------------------------------------------------------|

[phone] Phone:

Contact Person: Sara Moghtadernejad

Date Prepared: August 01, 2024

| Trade/Device Name: | Crown HT |
|------------------------|----------------------------|
| Common or Usual Name: | Tooth Shade Resin Material |
| Regulation Number: | 21 CFR 872.3690 |
| Regulation Name: | Tooth Shade Resin Material |
| Regulatory Class: | Class II |
| Product Code: | EBF |
| Secondar Product Code: | EBI, ELM |
| Predicate Devices | Digital Crown (K222623) |

## Device Description

SprintRay Crown HT is a photo-polymer methacrylate resin material used in conjunction with a 3D printer and a scanned 3D image in a dental office to build dental prosthetics by 3D printing layer upon layer of the composite material. SprintRay Crown HT resin is offered in various shades such as Bleach. A1, A2, A3, and B1. Crown HT is an alternative to traditional dental prosthesis material that is intended exclusively for professional dental work.

SprintRay Crown HT resin is intended exclusively for professional dental work. Fabrication of dental prosthetics with SprintRay Crown HT resin requires computer-aided design and CAD/CAM manufacturing system that includes the following components not part of the device: Crown HT file created in an optical impression system, 3D printer, and curing light equipment.

Crown HT resin is designed to meet appropriate ISO standards for flexibility and sorption, to withstand prolonged use in the oral cavity. It is delivered non-sterile, and instructions on curing, and cleaning the final device prior to providing it to a patient are provided in the device instruction for use (IFU) document.

## Intended Use / Indications for Use

SprintRay Crown HT is a light-curable polymerizable resin intended to be used for the fabrication of; individual and fixed definitive full single crowns; definitive

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partial crowns in anterior and posterior area, individual and fixed single veneers; artificial teeth for dental prostheses, which are used for removable definitive full dentures; and individual and removable monolithic full and partial dentures in dental offices and laboratories. The material is an alternative to traditional restorative dental material.

## Summary of Technological Characteristics

Light-based curing of a 3D printed acrylate resin is the technological principle for both the subject and predicate devices. The Crown HT resin is poured into a 3D printer, which relies on scanned images of the patient's oral cavity to produce a dental appliance. At a high level, the subject and predicate devices are based on the following same technological elements:

- are a pourable acrylate resin .
- are used in conjunction with 3D printers, which rely on common 3D . images to define the fabricated dental appliance
- . are cured prior to final trimming and cleaning
- . are used for the fabrication of orthodontic and dental appliances

The following technological differences exist between the subject and predicate devices:

- · differences in acrylate resin material composition
## Performance Data

The subject device is considered tissue contacting for a period longer than 30 Days. The following Biocompatibility testing was performed on samples of the Crown HT resin that had been formed into dental appliances using a 3D printer in accordance with the FDA Blue Book Memorandum #G95-1 and International Standard ISO 10993-1 and ISO 7405, as recognized by FDA.

- ISO 10993-3 Genotoxicity, carcinogenicity and reproductive toxicity ●
- ISO 10993-5 In Vitro Cytotoxicity ●
- ISO 10993-11 Systemic Toxicity ●
- ISO 10993-10 skin sensitization ●
- ISO 10993-23 skin irritation ●

Additional following bench testing based on the test steps laid out in ISO 10477 was performed using dental appliance fabricated from Crown HT resin.

- Ultimate Flexural Strength (ISO 10477) ●
- . Water Sorption and Water Solubility (ISO 10477)
- Radio Opacity (ISO-4049)
- Print Accuracy and dimension stability Test ●
- Surface Finish (ISO 10477) ●
- Shear Bond Strength (ISO 10477)
- Translucency
- . Free Monomer Extraction (ISO 20795-1)
- Tolerance
- Depth of Cure ●
- Viscosity
- Shade ●
- Material Reuse

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#### SprintRay, Inc.'s Crown HT resin Substantial Equivalence Chart

| | Digital Crown (Predicate Device) | Crown HT (Subject Device) |
|-----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Intended Use & Indications<br>for Use | SprintRay Digital Crown is a light-<br>curable polymerizable resin intended to<br>be used for the fabrication of; individual<br>and fixed definitive full single crowns;<br>definitive partial crowns in anterior and<br>posterior area, individual and fixed<br>single veneers; artificial teeth for dental<br>prostheses, which are used for<br>removable definitive full dentures; and<br>individual and removable monolithic full<br>and partial dentures in dental offices<br>and laboratories. The material is an<br>alternative to traditional restorative<br>dental material. | SprintRay Crown HT is a light- curable<br>polymerizable resin intended to be<br>used for the fabrication of; individual<br>and fixed definitive full single crowns;<br>definitive partial crowns in anterior and<br>posterior area, individual and fixed<br>single veneers; artificial teeth for dental<br>prostheses, which are used for<br>removable definitive full dentures; and<br>individual and removable monolithic<br>full and partial dentures in dental<br>offices and laboratories. The material<br>is an alternative to traditional<br>restorative dental material. |
| User Population | Clinicians in dental offices provided<br>permanent partial crowns and artificial<br>teeth as indicated in the<br>above IFU for patients. | Same |
| Material Type | Light-curable polymerizable resin | Same |
| Accessories | SprintRay Commercially available<br>3D printers | Same |
| Volume Provided | 250g bottle | 250g bottle or 4ml Midas Capsule |
| Shelf Life | 1.5 years | 1.5 years |
| Biocompatibility | Tested to ISO-10993-1, -3, -5, -10<br>and -11 | Tested to ISO-10993-1, -3, -5, -10,<br>-11, and 23 |
| Performance Testing | Testing performed using methods laid<br>out in ISO- 10477 | Same |
| Flexural Strength (>50.0 MPa) | 125-174 MPa | >124 MPa |
| Flexural Modulus | 6116-7714MPa | >7000 MPa |
| Sorption (<40 µg/mm³) | 17.35 ± 2.56 µg/mm3 | 11.15 ± 2.5 µg/mm3 |
| Solubility (<7.5 µg/mm³) | 2.16 ±1.30 µg/mm3 | 0.49 ±0.59 µg/mm3 |
| Monomer Methyl<br>Methacrylate (<2.2S%) | Not detectable | Not detectable |

In all instances, the Crown HT resin functioned as intended and the outcomes were as expected.

## Conclusions

The Crown HT resin is as safe and effective as its predicate device. The Crown HT resin has the same intended use and indication, and similar technological characteristics, and principles of operation as its predicate device. The minor technological differences between the Crown HT resin and its predicate device raise no new issues of safety or effectiveness. Performance data demonstrate that the Crown HT resin is as safe and effective as the predicate device. Thus, the Crown HT resin is substantially equivalent.