# K171757: Straumann Screw Retained Abutments

- Pathway: 510(k) (Traditional)
- Applicant: Straumann USA, LLC (On Behalf of Institut Straumann Ag)
- Decided: Nov 27, 2017 after 166 days
- Product code: NHA (Abutment, Implant, Dental, Endosseous)
- Device class: 2
- Regulation: 21 CFR 872.3630
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 10 generations back to K894595 (1990). 71 ancestors in all.
14 later devices descend from it; 2 cite it directly.
0 of 86 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K133421: Straumann Magellan (TM) Abutment,Protective Cap,Titanium Copings,Gold Chopings,Basal Screw, Straumann USA, LLC (2014) Summary page 4.

## Most influential descendants
- K191123: Multi-unit Abutments (2020), 11 descendants of its own
- K203252: Multi-unit Abutments for CONELOG (2021), 8 descendants of its own
- K213106: BTI Interna Dental Implant System UnicCa - Prosthetic Components (2022), 3 descendants of its own
- K240187: Tapered Pro Conical Implant System (2024), 2 descendants of its own
- K231827: BTI Dental Implant System UnicCa® – Aesthetic Post Abutments (2023), 2 descendants of its own

## Indications for use
Straumann® Screw Retained Abutments are indicated to be placed into the implants of the Straumann® Dental Implant System to provide support for prosthetic reconstructions such as crowns, bridges and bars. The final processed devices have the purpose of restoring chewing function. Straumann® Screw Retained Abutments are indicated for screw-retained restorations.

Source page: https://510kreport.com/device/K171757
Methodology: https://510kreport.com/methodology