510(k) · Cleared
ClearedStraumann Screw Retained Abutments
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Straumann USA, LLC (On Behalf of Institut Straumann Ag) · NHA Abutment, Implant, Dental, Endosseous
Cleared on Nov 27, 2017 as substantially equivalent to K133421 (Straumann USA, LLC, 2014) after a 166-day review. Its family tree reaches back 10 generations to 1990. 14 later devices descend from it.
- Decided
- Nov 27, 2017
- Review
- 166 days
- Class
- Class II
- Product code
- NHA
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 10 generations to K894595 (1990). 71 ancestors in all, the oldest K894844 (1990). 14 later devices descend from it, 2 citing it directly.
- Root · 10 generations backK894595 Bonefit R Screw ImplantsInstitut Straumann AG · 1990
- 6 generations between
- 3 generations backK083805 Ankylos C/X Dental Implant SystemDentsply Intl., Inc. · 2009
- 2 generations backK101945 Neodent Implant SystemJjgc Industria E Comercio DE Materiais Dentarios S · 2011
- 1 generation backK133421 Straumann Magellan (TM) Abutment,Protective Cap,Titanium…Straumann USA, LLC · 2014
- This deviceK171757 Straumann Screw Retained AbutmentsStraumann USA, LLC (On Behalf of Institut Straumann Ag) · 2017
- Descendant · cites it directly · 11 of its ownK191123 Multi-unit AbutmentsMedentika GmbH · 2020
- Descendant · 2 generations on · 8 of its ownK203252 Multi-unit Abutments for CONELOGBioHorizons Implant Systems, Inc. · 2021
- Descendant · 3 generations on · 3 of its ownK213106 BTI Interna Dental Implant System UnicCa - Prosthetic ComponentsB.T.I. Biotechnology Institute, Sl. · 2022
- Descendant · 3 generations on · 2 of its ownK240187 Tapered Pro Conical Implant SystemBioHorizons Implant Systems, Inc. · 2024
- Descendant · 4 generations on · 2 of its ownK231827 BTI Dental Implant System UnicCa® – Aesthetic Post AbutmentsB.T.I. Biotechnology Institute, Sl. · 2023
Show all 10 generations
- Root · 10 generations backK894595 Bonefit R Screw ImplantsInstitut Straumann AG · 1990
- 9 generations backK984104 Iti Dental Implant SystemStraumann USA · 1999 · Recalled
- 8 generations backK992937 Dental ImplantNobel Biocare Uas, Inc. · 2000 · Recalled
- 7 generations backK013067 Frialoc Dental Implant SystemFriadent GmbH · 2002
- 6 generations backK021318 Xive Dental Implant SystemFriadent GmbH · 2002
- 5 generations backK032158 Xive Dental Implant System MultipleFriadent GmbH · 2003
- 4 generations backK041509 Ankylos Dental Implant SystemFriadent GmbH · 2004
- 3 generations backK083805 Ankylos C/X Dental Implant SystemDentsply Intl., Inc. · 2009
- 2 generations backK101945 Neodent Implant SystemJjgc Industria E Comercio DE Materiais Dentarios S · 2011
- 1 generation backK133421 Straumann Magellan (TM) Abutment,Protective Cap,Titanium…Straumann USA, LLC · 2014
- This deviceK171757 Straumann Screw Retained AbutmentsStraumann USA, LLC (On Behalf of Institut Straumann Ag) · 2017
Showing 5 of 14 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 14 · See all- K191123Multi-unit AbutmentsMedentika GmbH · 2020 · cites it directly11descendants
- K203252Multi-unit Abutments for CONELOGBioHorizons Implant Systems, Inc. · 2021 · 2 generations on8descendants
- K213106BTI Interna Dental Implant System UnicCa - Prosthetic ComponentsB.T.I. Biotechnology Institute, Sl. · 2022 · 3 generations on3descendants
- K240187Tapered Pro Conical Implant SystemBioHorizons Implant Systems, Inc. · 2024 · 3 generations on2descendants
- K231827BTI Dental Implant System UnicCa® – Aesthetic Post AbutmentsB.T.I. Biotechnology Institute, Sl. · 2023 · 4 generations on2descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −10 | K894595 | Bonefit R Screw Implants | Institut Straumann AG | 1990 | — |
| −9 | K984104 | Iti Dental Implant System | Straumann USA | 1999 | 1 |
| −8 | K992937 | Dental Implant | Nobel Biocare Uas, Inc. | 2000 | 1 |
| −7 | K013067 | Frialoc Dental Implant System | Friadent GmbH | 2002 | — |
| −6 | K021318 | Xive Dental Implant System | Friadent GmbH | 2002 | — |
| −5 | K032158 | Xive Dental Implant System Multiple | Friadent GmbH | 2003 | — |
| −4 | K041509 | Ankylos Dental Implant System | Friadent GmbH | 2004 | — |
| −3 | K083805 | Ankylos C/X Dental Implant System | Dentsply Intl., Inc. | 2009 | — |
| −2 | K101945 | Neodent Implant System | Jjgc Industria E Comercio DE Materiais Dentarios S | 2011 | — |
| −1 | K133421 | Straumann Magellan (TM) Abutment,Protective Cap,Titanium Copings,Gold… | Straumann USA, LLC | 2014 | — |
| 0 (this device) | K171757 | Straumann Screw Retained Abutments | Straumann USA, LLC (On Behalf of Institut Straumann Ag) | 2017 | — |
| +1 | K191123 | Multi-unit Abutments | Medentika GmbH | 2020 | — |
| +2 | K203252 | Multi-unit Abutments for CONELOG | BioHorizons Implant Systems, Inc. | 2021 | — |
| +3 | K213106 | BTI Interna Dental Implant System UnicCa - Prosthetic Components | B.T.I. Biotechnology Institute, Sl. | 2022 | — |
| +3 | K240187 | Tapered Pro Conical Implant System | BioHorizons Implant Systems, Inc. | 2024 | — |
| +4 | K231827 | BTI Dental Implant System UnicCa® – Aesthetic Post Abutments | B.T.I. Biotechnology Institute, Sl. | 2023 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1990 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 0 |
| 2002 | 8 | 0 |
| 2003 | 4 | 0 |
| 2004 | 5 | 0 |
| 2005 | 2 | 0 |
| 2006 | 2 | 0 |
| 2007 | 2 | 0 |
| 2008 | 2 | 0 |
| 2010 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2020 | 2 | 0 |
| 2021 | 2 | 0 |
| 2022 | 2 | 0 |
| 2023 | 3 | 0 |
| 2024 | 3 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in NHA? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new NHA device
- #1 K222288 DESS Dental Smart Solutionsscore 30.6 · 19 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K133421 | Straumann Magellan (TM) Abutment,Protective Cap,Titanium Copings,Gold Chopings,Basal ScrewSummary page 4…II (21 CFR §872.3630) Product Code: NHA (21 CFR §872.3630) 5.3 Predicate Device Primary Predicate: (K133421) Straumann® Magellan™ Screw Retained Abutment System Reference Predicate: (K141871) Straumann Bon… | 2014 |
| † | K141871 | Straumann Bone Level NC Angled Screw Retained Abutments | 2014 |
| † | K151247 | NC Straumann Screw Retained Abutments | 2015 |
| † | K150814 | Straumann Screw-Retained Abutment | 2015 |
| † | K130808 | Straumann Healing Abutments, Healing Caps, Closure Screws | 2013 |
What descends from it? (14)
See all 142 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 27 years and passes through 8 companies; a new generation was cleared every 2.1 years on median.
- 5 of the 71 ancestors have a recall of any class.
- Of its descendants, K191123 (Medentika GmbH, 2020) has gone furthest, with 11 descendants of its own.
- 9 other devices also cite its predicate K133421.
How does its category compare?
All NHA devicesNHA Abutment, Implant, Dental, Endosseous: FDA decisions, review times, recalls and adverse event reports over 20 years. 2017, this device’s year, is highlighted.
FDA decisions per year · NHA
40in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · NHA
147in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · NHA
1in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · NHA
838in 2025
MAUDE reports naming product code NHA, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 38 | 91 | 1 | 1 |
| 2008 | 31 | 90 | 2 | 8 |
| 2009 | 30 | 95 | 0 | 30 |
| 2010 | 19 | 162 | 0 | 61 |
| 2011 | 31 | 130 | 5 | 56 |
| 2012 | 25 | 171 | 1 | 5 |
| 2013 | 22 | 184 | 1 | 143 |
| 2014 | 27 | 160 | 0 | 146 |
| 2015 | 29 | 151 | 1 | 858 |
| 2016 | 38 | 202 | 36 | 314 |
| 2017 | 31 | 188 | 2 | 577 |
| 2018 | 31 | 200 | 1 | 591 |
| 2019 | 28 | 160 | 0 | 530 |
| 2020 | 38 | 153 | 7 | 458 |
| 2021 | 29 | 211 | 0 | 546 |
| 2022 | 33 | 142 | 0 | 497 |
| 2023 | 51 | 147 | 3 | 618 |
| 2024 | 43 | 158 | 0 | 635 |
| 2025 | 40 | 147 | 1 | 838 |
| 2026 | 23 | 169 | 3 | — |
What is it indicated for?
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.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K171757 · printed Nov 6, 2026
Cite this page
510(k) Report. “K171757: Straumann Screw Retained Abutments.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K171757
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026