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Stability measurements of craniofacial implants by means of resonance frequency analysis. A clinical pilot study

Published online by Cambridge University Press:  29 June 2007

S. J. Heo ,
L. Sennerby ,
M. Odersjö ,
G. Granström ,
A. Tjellström  and
N. Meredith
S. J. Heo
Affiliation:
Department of Biomaterials/Handicap Research, Institute for Surgical Sciences, University of Gothenburg, Gothenburg, Sweden The Department of Prosthodontics, Seoul National University, Seoul, Korea
L. Sennerby*
Affiliation:
Department of Biomaterials/Handicap Research, Institute for Surgical Sciences, University of Gothenburg, Gothenburg, Sweden Department of Biomaterials/Handicap Research, the Brånemark Clinic, Faculty of Odontology, University of Gothenburg, Gothenburg, Sweden.
M. Odersjö
Affiliation:
The Department of Otolaryngology, Head and Neck Surgery, University of Gothenburg, Gothenburg, Sweden.
G. Granström
Affiliation:
The Department of Otolaryngology, Head and Neck Surgery, University of Gothenburg, Gothenburg, Sweden.
A. Tjellström
Affiliation:
The Department of Otolaryngology, Head and Neck Surgery, University of Gothenburg, Gothenburg, Sweden.
N. Meredith
Affiliation:
The Department of Oral and Dental Science, Bristol Dental Hospital, Bristol, UK
*
Address for correspondence: Dr Lars Sennerby, Dept of Biomaterials/Handicap Research, Institute for Surgical Sciences, University of Gothenburg, Medicinaregatan 8B, S-413 90 Gothenburg, Sweden.
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Abstract

Nineteen patients previously treated with 52 implants for anchorage of craniofacial prostheses were subjected to implant stability measurements by means of resonancefrequency analysis (RFA), six months to 15 years after implant placement. The resonance frequency (RF) of a transducer attached to the implant abutment was measured by using a frequency response analyser, a personal computer (PC) and dedicated software. Statisticallysignificant higher RF values were seen for implants in the temporal bone as compared to implants in the nose and periorbital regions. There was a positive correlation with time since implant placement for the period from six months up to seven years. It was concludedthat the preliminary results suggest that implant stability increases with time and that implants in temporal bone are more stable than implants in the bone in the nose and periorbital regions, probably reflecting differences in bone density.

Keywords

Prostheses, cranial facialOsseointegration
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 112 , Issue 6 , June 1998 , pp. 537 - 542
Copyright
Copyright © JLO (1984) Limited 1998

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