Wir verwenden Cookies, um für diese Website Funktionen wie z.B. Login, einen Warenkorb oder die Sprachwahl zu ermöglichen. Weiterhin nutzen wir für anonymisierte, statistische Auswertungen der Nutzung Google Analytics, welches Cookies setzt. Mehr Informationen finden Sie in unserer Datenschutzerklärung.
OK, ich bin einverstanden Ich möchte keine Google Analytics-Cookies
The International Journal of Oral & Maxillofacial Implants
Login:
Benutzername:

Kennwort:

Plattform:

Kennwort vergessen?

Registrieren

Int J Oral Maxillofac Implants 16 (2001), Nr. 3     15. Juni 2001
Int J Oral Maxillofac Implants 16 (2001), Nr. 3  (15.06.2001)

Seite 367-377, Sprache: Englisch


Implant-Abutment Screw Joint Preload of 7 Hex-top Abutment Systems
Tan, Keson B. / Nicholls, Jack I.
This study measured the screw joint preload of the implant-abutment interface for 7 common hex-top abutment systems. Increasingly, prosthetic designs are utilizing a direct prosthetic connection to the implant, placing the implant-abutment screw joint under direct functional loads and moments. Sufficiently high screw joint preloads are required to maintain screw joint integrity and confer clinical longevity to implant prosthetic components to prevent such complications as abutment screw loosening and screw fracture. Strain-gauged abutment load cells were calibrated to measure screw joint preload at the implant-abutment interface. Torque delivery by electronic torque controller was varied at low- and high-speed settings. At manufacturer's recommended torques, the overall mean preload measured was 181.6 ± 60.0 N for the Nobel Biocare Standard abutment, 291.3 ± 41.2 N for the Nobel Biocare EsthetiCone abutment, 456.5 ± 44.0 N for the Nobel Biocare MirusCone abutment, 369.7 ± 32.9 N for the 3i Titanium Abutment post, 643.4 ± 143.1 N for the Nobel Biocare CeraOne abutment, 536.3 ± 68.6 N for the Nobel Biocare "Gold Cylinder to Fixture" abutment, and 556.9 ± 145.6 N for the Nobel Biocare TiAdapt abutment. Analysis of variance revealed significant differences between abutment systems (P < .001) and between torque driver speed settings (P < .001). Implant-abutment screw joint preload of external-hex implants is dependent on abutment design, screw diameter, material, tightening torque, and torque controller speed.
Volltext (keine Berechtigung) einzeln als PDF kaufen (20.00 €)Endnote-Export