An in vitro evaluation of the strength of a 1-piece and 2-piece conical abutment joint in implant design

Author: Norton M.R.

Source: Clinical Oral Implants Research, Volume 11, Number 5, October 2000 , pp. 458-464(7)

Publisher: Blackwell Publishing

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Abstract:

The performance and maintenance of implant-supported prostheses are primarily dependent upon load transmission both at the bone-to-implant interface and within the implant–abutment–prosthesis complex. The design of the interface between components has been shown to have a profound influence on the stability of screw joints. In this in vitro evaluation, implants utilizing an internal conical joint have demonstrated a parity in resistance to bending moments at the fixture–abutment interface, when comparing a 1-piece abutment to a 2-piece abutment, which is tightened via a separate abutment screw, with mean plastic bending moments of 4176 N mm and 4049 N mm respectively. The very small values for coefficient of variance measured in both systems would confirm that whilst the size of data is small it is nonetheless a reliable indication of the relative strength of these conical joint designs.

Keywords: conical joint; interface; bending strength

Language: English

Document Type: Original article

DOI: 10.1034/j.1600-0501.2000.011005458.x

Affiliations: Department of Oral and Maxillofacial Surgery, Charing Cross Hospital, Fulham Palace Road, London W6 8RF, England : *

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