# K900389: Temporary Crown Matrix Buttons

- Pathway: 510(k) (Traditional)
- Applicant: Advantage Dental Products, Inc.
- Decided: Jul 13, 1990 after 165 days
- Product code: EBG (Crown And Bridge, Temporary, Resin)
- Device class: 2
- Regulation: 21 CFR 872.3770
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
12 later devices descend from it; 2 cite it directly.
0 of 13 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K082723: Grindguard (2009), 10 descendants of its own
- K123161: Smartguard Night Guard, Smartguard Original, Smartguard Night Guard Original, Smartguard Elite (2013), 9 descendants of its own
- K133037: Grindguard (2014), 6 descendants of its own
- K181099: Bright Guard (2019), 5 descendants of its own
- K221369: FBCC Night Guard (2022), 3 descendants of its own

Source page: https://510kreport.com/device/K900389
Methodology: https://510kreport.com/methodology