# K231687: Gradual Dental Zirconia Blank

- Pathway: 510(k) (Traditional)
- Applicant: Liaoning Upcera Co., Ltd.
- Decided: Sep 7, 2023 after 90 days
- Product code: EIH (Powder, Porcelain)
- Device class: 2
- Regulation: 21 CFR 872.6660
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 9 generations back to K830955 (1983). 18 ancestors in all.
2 later devices descend from it; 2 cite it directly.
0 of 21 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K152175: Upcera Dental Zirconia Blank for Aesthetic Restoration, Liaoning Upcera Co., Ltd. (2015) Summary page 4.

## Most influential descendants
- K253973: Gradual Dental Zirconia Blank - GT (F) P1, GT (F) P2, and SP Series (2026), 0 descendants of its own
- K251593: DenMat Multilayered Zirconia Disc (2025), 0 descendants of its own

## Indications for use
The device is indicated for fabrication of anterior and posterior dental restorations using different CAD/CAM or manual machines. All blanks are processed through dental laboratories or by dental professionals.

Source page: https://510kreport.com/device/K231687
Methodology: https://510kreport.com/methodology