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Survival rate of self-tapping implants for bone-anchored hearing aids

Published online by Cambridge University Press:  03 November 2006

A Tjellström
Affiliation:
Implant Unit, Department of Otolaryngology, Sahlgrenska University Hospital, Göteborg, Sweden
G Granström
Affiliation:
Implant Unit, Department of Otolaryngology, Sahlgrenska University Hospital, Göteborg, Sweden
M Odersjö
Affiliation:
Implant Unit, Department of Otolaryngology, Sahlgrenska University Hospital, Göteborg, Sweden

Abstract

Objective: The purpose of this study was to investigate whether a new self-tapping implant for a bone-anchored hearing aid (BAHA) had the same high frequency of osseointegration as previous implants requiring pre-tapping.

Method: Over a three-year period, 144 consecutive implants were placed in the mastoid for BAHA and evaluated.

Results: Two implants were lost; both were of the self-tapping type. One was in an 11-year-old boy, who lost his implant six weeks after surgery when the BAHA was fitted. The other was in an elderly man, a heavy smoker with diabetes. Using Fisher's exact test, there was no significant difference between the two groups (p>0.30).

Conclusion: Self-tapping implants facilitate surgery and shorten operating time. Over a short follow up, we did not find any significant difference; however, it is important to follow these implants over a longer time period.

Type
Main Articles
Copyright
2006 JLO (1984) Limited

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