PMID: 8953484Nov 1, 1996Paper

An in vivo quantitative analysis of the fit of Nobel Biocare implant superstructures

Journal of Oral Rehabilitation
P D Cheshire, J A Hobkirk

Abstract

Loss of osseointegration of implant fixtures and mechanical failure of superstructures have been attributed to failure to achieve a passive fit between the superstructure and the transmucosal abutment (TMA). The fit of five mandibular superstructures, fabricated on Nobel Biocare implants, was investigated in vivo, using a polyvinyl siloxane impression material to record the discrepancies. Following sectioning of the impressions, the vertical and horizontal discrepancies were analysed at four locations using a travelling microscope. The discrepancies obtained were measured both when the gold cylinder screws were maximally tightened by hand and when tightened with a torque driver to the recommended value of 10 Ncm. The vertical discrepancies for the hand tightened abutments ranged from 0 micron to 63 microns with a mean of 14 microns. In the mechanically tightened group, the vertical discrepancies ranged from 0 micron to 130 microns with a mean of 21 microns. The horizontal discrepancies for the mechanically tightened abutments ranged from 0 micron to 140 microns with a mean of 31 microns, compared with a mean of 46 microns and range of 0 micron to 113 microns, for the hand-tightened abutments. A close fit was seldom achieved. It...Continue Reading

Citations

Oct 20, 2011·Clinical Oral Investigations·Michael StimmelmayrFlorian Beuer
Apr 25, 2001·The Journal of Prosthetic Dentistry·W R de CarvalhoA L Caúla
Nov 10, 1998·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·A G WeeD L Williamson
Aug 24, 2013·The Journal of Oral Implantology·Hanaa Hassan Zaghloul, Jihan Farouk Younis
Jun 6, 2007·The Journal of Prosthetic Dentistry·Tuncer Burak OzcelikZafer Ozgur Pektas
Oct 12, 2007·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Matthias KarlSiegfried M Heckmann
May 15, 2009·Clinical Implant Dentistry and Related Research·Lars HjalmarssonTorsten Jemt
Dec 17, 2008·Clinical Implant Dentistry and Related Research·Alf EliassonTorsten Jemt
Nov 15, 2013·Clinical Implant Dentistry and Related Research·Egle VindasiuteTomas Linkevicius
Apr 19, 2011·Journal of Biomechanics·Erica Miranda de TorresRicardo Faria Ribeiro
Dec 1, 2005·Journal of Applied Oral Science : Revista FOB·Luciana Martins Cres MoraesWellington Cardoso Bonachela
Apr 11, 2009·Implant Dentistry·Rashmi HegdeMichael S McCracken
Apr 14, 2010·Implant Dentistry·Wirley Gonçalves AssunçãoPaulo Henrique dos Santos
Nov 3, 2009·The Journal of Craniofacial Surgery·Erica Alves GomesEdson Antonio Capello de Sousa
Jun 22, 2005·Implant Dentistry·Matthias KarlSiegfried M Heckmann
May 21, 2010·The Journal of Craniofacial Surgery·Wirley Gonçalves AssunçãoEdson Antonio Capello de Sousa
Dec 2, 2010·The Journal of Craniofacial Surgery·Douglas Roberto MonteiroAldiéris Alves Pesqueira
Apr 6, 2002·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Chatchai KunavisarutDavid A Felton
May 27, 2011·Implant Dentistry·Donald J Pipko

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