Most of two-component or multi-component implant systems use an implant-abutment connection with a clearance fit. The clinical impact is assumed as high according to the following factors:
This in-vitro study examined the dynamic behaviour of different designs of implant-abutment connections. Abutments were loaded at an angle of 30° with a force of up to 200 N. The distance of the point of force application from the implant platform was 8 mm; the gradation of the force was 0.3 N/ms. The interface of the implant-abutment connection was examined and measured radiologically using a professional high speed digital camera (1,000 images per second).
The results showed that, under simulated clinical conditions, complex mechanisms are responsible for the presence or absence of a micro-motion. All implant-abutment connections with a clearance fit exhibit a micro-motion (implant systems: SIC®; Replace Select®; Camlog®; XIVE®; Straumann synOkta®; Bego-Semados®; Straumann massive conical abutment®). Precision conical connections (implant systems: Ankylos®; Astra Tech®) show no micro-motion.
The potential clinical relevance of these results can at this point only be derived from theoretical considerations. Presumably, the pumping effect caused by the micro-motion plays an important role for crestal bone resorption. It is assumed that the bone is contaminated with liquid contained in the implant.
Link to article
Regular Neck mit Massivsekundärteil
Regular Neck mit synOkta und Fräszylinder
Bone Level Implantat
Dipl.-Ing. Holger Zipprich
Poliklinik für zahnärztliche Prothetik, Sektion Werkstoffkunde
Theodor-Stern-Kai 7 / Haus 29, D-60590 Frankfurt am Main
Tel: +49 (0)69/6301-4714, eMail:email@example.com
© 2007-2019. All rights reserved. No commercial use, duplicating, circulation, display, performance, demonstration, provide public access, use from presentations, broadcasting or show beyond of this website, not even in extracts. If the used product names are trademarks, all the rights are reservered by their owners.