Enamel/ Modifier is Enamel porcelain, its function is to make adjusted porcelain powder gently stacked in the incisal aimed at shape, and stack from incisal to the body, covering dentin porcelain:

Stain/Glaze and Stain/Glaze-A is Enamel layer, its function is to coat with a thin layer of glaze on the surface of the finishing porcelain crown to achieve the required color and gloss of natural teeth.

Modeling Fluid: A dental ceramic powder is mixed in order to shape or model it into its required form prior to firing

AI/ML Overview

The provided text is an FDA 510(k) summary for a dental product, "Porcelain Powder." It outlines the product's classification, intended use, and a comparison to a predicate device to establish substantial equivalence.

Crucially, this document is for a dental material (Porcelain Powder), not a medical device software (MDSW) or an AI/ML-driven device. Therefore, the information requested in your prompt regarding acceptance criteria, study details, ground truth, expert adjudication, MRMC studies, and standalone performance for AI/ML devices is not present in this regulatory submission.

The document states: "Clinical testing was not required for this submission." This indicates that no human performance or comparative effectiveness studies were conducted for this traditional material device. The "Non-clinical Test Conclusion" section primarily refers to bench testing for physical and mechanical properties, and biocompatibility testing.

To answer your prompt with the provided input, I must state that the requested information (acceptance criteria, study details for AI/ML device performance) is not applicable to the Porcelain Powder device and is not contained within this 510(k) summary.

Therefore, I cannot populate the table or provide the requested details about acceptance criteria, study design, ground truth, or expert involvement as this information pertains to a different type of medical device (AI/ML or diagnostic software) than the "Porcelain Powder" described in the provided text.

Summary

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March 14, 2025

Image /page/0/Picture/1 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.

Aidite (Qinhuangdao) Technology Co., Ltd. % Boyle Wang General Manager Shanghai Truthful Information Technology Co., Ltd. Room 1801, No. 161 East Lu Jiazui Rd., Pudong, 200120 China

Re: K250025

Trade/Device Name: Porcelain Powder (Enamel/ Modifier,Stain/Glaze-A,Modeling Fluid ) Regulation Number: 21 CFR 872.6660 Regulation Name: Porcelain Powder For Clinical Use Regulatory Class: Class II Product Code: EIH Dated: March 12, 2025 Received: March 13, 2025

Dear Boyle Wang:

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.

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"

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(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 OS 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 Rue"). 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-devices/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-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,

Bobak Shirmohammadi -S

For Michael E. Adjodha, M.ChE., 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

510(k) Number (if known) K250025

Device Name

Porcelain Powder (Enamel/ Modifier.Stain/Glaze.Stain/Glaze-A.Modeling Fluid)

Indications for Use (Describe)

Porcelain Powder can be used to make facings and veneers of customized denture crowns. It is suitable for adults over 18 years old.

Type of Use (Select one or both, as applicable)

X Prescription Use (Part 21 CFR 801 Subpart D)

| Over-The-Counter Use (21 CFR 801 Subpart C)

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510(k) Summary

K250025

This summary is submitted in accordance with 21 CFR 807.92.

1.0 Submission Sponsor

Name:	Aidite (Qinhuangdao) Technology Co., Ltd.
Address 1:	No.9 Dushan Road, Economic And Technological Development Zone,Qinhuangdao City,066004 Hebei P.R.China;
Address 2:	No.56 Tianchi Road, Economic And Technological DevelopmentZone,Qinhuangdao City,066004 Hebei P.R. China
Contact:	Mr. Ye Zhanfu
Tel:	+86 335 8587898
Fax:	+86 335 8587198

Designated Submission Correspondent

Contact:	Mr. Boyle Wang
Address:	Shanghai Truthful Information Technology Co., Ltd.Room 1801, No. 161 East Lu Jiazui Rd., Pudong Shanghai200120 China
Tel:	+86-21-50313932
Email:	info@truthful.com.cn

Date of Preparation: Mar.12md ,2025

2.0 Device Information

Trade name:	Porcelain Powder
Common name:	Dental Porcelain Powder
Classification name:	Porcelain Powder For Clinical Use
Model:	Enamel/ Modifier, Stain/Glaze, Stain/Glaze-A, Modeling Fluid
Production code:	EIH
Regulation number:	21 CFR 872.6660
Classification:	Class II
Panel:	Dental

3.0 Identification of Predicate Device and Reference Device

Predicate Device:

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K232676 510(k) Number:

Trade/Product Name: Dental Porcelain Powder Manufacturer: Chengdu Besmile Medical Technology Co., Ltd.

4.0 Device Description

This product includes Porcelain Powder, Stain/Glaze, Stain/Glaze-A and Modeling Fluid.

Enamel/ Modifier is Enamel porcelain, its function is to make adjusted porcelain powder gently stacked in the incisal aimed at shape, and stack from incisal to the body, covering dentin porcelain:

Modeling Fluid: A dental ceramic powder is mixed in order to shape or model it into its required form prior to firing

5.0 Indication for Use Statement

Porcelain Powder can be used to make facings and veneers of customized denture crowns.It is suitable for adults over 18 years old.

6.0 Non-clinical Test Conclusion

Bench Testing:

• Physical and mechanical properties of the subject device were evaluated according to FDA-recognized version ISO 6872:2015/AMD 1:2018 Dentistry - Ceramic materials.

Test items include uniformity, freedom from extraneous materials, mixing and compaction performance, flexural solubility, chemical solubility, radioactivity, coefficient of thermal expansion, glass transition temperature and shade and all tests were verified to meet acceptable criteria.

Biocompatibility Testing:

The nature of body contact of materials used in the design of the Porcelain Powder were classified as being Surface Devices in contact with mucosal membrane with a permanent contact duration of >30 days. The biocompatibility testing was performed according to FDA currently-recognized versions of biocompatibility consensus standards ISO 10993-1:2018 Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process and ISO 7405:2018 Dentistry - Evaluation of biocompatibility of medical devices used in dentistry.

The following biological safety aspects have been addressed:

· Cytotoxicity ISO 10993-5
· Sensitization ISO 10993-10

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· Oral MucOsa Irritation ISO 10993-23
· Acute Systemic Toxicity- ISO 10993-11
· Pyrogen Test- ISO 10993-11
· Subchronic Systemic Toxicity ISO 10993-11
· Bacterial Reverse Mutation Test- ISO 10993-3
TK Gene Mutation Test– ISO 10993-3

Sterility and Shelf-Life Testing:

The device is provided non-sterile.

From the shelf life testing report, the Porcelain Powder has a shelf life of 3 years.

7.0 Summary of Clinical Test

Clinical testing was not required for this submission.

9.0 Technological Characteristics and Substantial Equivalence

The following table shows similarities and differences of use, design, and material between our device and the predicate devices.

Item	Subject Device	Predicate Device	Remark
510(k) No.	K250025	K232676	--
Product Name	Porcelain Powder	Dental Porcelain Powder	--
Product Code	EIH	EIH	Same
Regulation No.	21 CFR 872.6660	21 CFR 872.6660	Same
Class	II	II	Same
Intended Use/Indication forUse	Porcelain Powder can be used tomake facings and veneers ofcustomized denture crowns. It issuitable for adults over 18 yearsold.	This product is indicated foruse as a veneering materialfor fixed prosthesis in crowns,bridges.	Same(Analysis 1)
Prescription Use	Yes	Yes	Same
Device Design	This product includes PorcelainPowder, Stain/Glaze,Stain/Glaze-A and ModelingFluid.	The product form is PorcelainPowder, Stain/Glaze andBlending liquid	Similar
Materials	This product includes PorcelainPowder, Stain/Glaze,Stain/Glaze-A and ModelingFluid. The porcelain powder is	This product includesPorcelain Powder,Stain/Glaze and Blendingliquid. The porcelain powder	Different(Analysis 2)

	composed of SiO2 (SiliconDioxide), Na2CO3 (SodiumCarbonate), Li2CO3 (LithiumCarbonate), H3BO3 (Boric Acid),K2CO3 (Potassium Carbonate),MgO (Magnesium Oxide),CaCO3 (Calcium Carbonate),ZrO2 (Zirconium Dioxide),BaCO3 (Barium Carbonate),Al2O3 (Aluminum Oxide), SnO2(Tin Dioxide).The Modifier Model is in Powderform with basic porcelainpowder; Modeling Fluid Modelare in Liquid form; Stain/Glazeand Stain/Glaze-A areprovided in paste forms,combining the components ofModifier and Modeling Fluid,along with various pigments,and Stain/Glaze contains anadditional ingredient- NaF,compared to Stain/Glaze-A.	is composed of silica (SiO2),alumina (Al2O3), potassiumoxide (K2O), sodium oxide(Na2O), boron trioxide(B2O3), calcium oxide (CaO),barium oxide (BaO), zirconia(ZrO2), zinc oxide (ZnO) ,lithium oxide (Li2O), tin oxide(SnO2), magnesium oxide(MgO), Yttrium oxide (Y2O3)and terbium oxide (Tb2O3)..The blending liquid iscomposed of purified water, 1,3-butanediol anddiethanolamine. TheStain/Glaze is composed ofthe porcelain powder and theblending liquid in accordancewith the mass ratio of 1:1
Conditions of use	This product is used by trainedprofessional dentists inlegitimate and legitimatecustomized denture.	Made by professionaltechnicians; This product isused by trained professionaloperators in legitimate andlegitimate customized dentureproduction institutions.	Same
PhysicochemicalPropertiesPer ISO 6872Dentistry – DentalCeramics	• Uniformity• Freedom from ExtraneousMaterials• Mixing & CondensationProperties (Class I Ceramics)• Physical & ChemicalProperties• Flexural Strength• Linear Thermal ExpansionCoefficient• Glass Transition Temperature• Chemical Solubility• Radioactivity	• Uniformity• No foreign body• Mixing & CondensationProperties (Class I Ceramics)• Physical & ChemicalProperties• Flexural Strength• Linear Thermal ExpansionCoefficient• Glass TransitionTemperature• Chemical Solubility• Radioactivity	Same
Manufacturingmaterial	Glass ceramics	Glass ceramics	Same
Categorization bynature of bodycontact	Surface-contactingmedicaldevicesMucosal membranes	Surface-contactingmedicaldevicesMucosal membranes	Same
Categorization byduration of contact	Long-term exposure contact timeexceeds 30d	Long-termexposure contacttime exceeds 30d	Same
Applicable population	It is suitable for clinical patientswith denture defect or absence.	It is suitable for clinical patientswith denture defect or absence.	Same
Intended site	Patient's oral cavity	Patient's oral cavity	Same
Sterile	Non-sterile	Non-sterile	Same
Biocompatibility	Comply with ISO 10993-1:2018,and ISO 7405:2018	Comply with ISO 10993-1,ISO 7405:2018	Same

Table 1- Comparison of Technology Characteristics

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Analysis:

The subject device is highly similar to the predicate device in terms of indications for use, design, material and processing.

The subject device is different from the predicate device in the following:

1. The subject device and predicate device are substantially equivalent in terms of their intended use and indications for use:
- a) Both devices are intended for use as veneering materials for dental prosthetic restorations;
- b) The differences in wording between the two devices' indications for use do not reflect significant functional differences and do not introduce new questions of safety or effectiveness.
- c) The subject device's focus on facings and veneers for customized denture crowns is a subset of the broader application described for the predicate device (veneering material for crowns and bridges), there is no effect on the SE determination.
1. The main ingredients are basically the same, and the candidate product has passed the biocompatibility test, and there are no new risks. Accordingly, it was concluded that the subject device is substantially equivalent in biocompatibility to the predicate device and the reference device.

10.0 Conclusion

The conclusions drawn from the comparison and analysis above demonstrate that the subject device is substantially equivalent to the legally marketed predicated device.

Regulation Number and Section

§ 872.6660 Porcelain powder for clinical use.

(a)
Identification. Porcelain powder for clinical use is a device consisting of a mixture of kaolin, felspar, quartz, or other substances intended for use in the production of artificial teeth in fixed or removable dentures, of jacket crowns, facings, and veneers. The device is used in prosthetic dentistry by heating the powder mixture to a high temperature in an oven to produce a hard prosthesis with a glass-like finish.(b)
Classification. Class II.