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Journal of Medical Implants & Surgery
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Case Report

Case Report after Introducing a New Abutment Surface for Bone Anchored Hearing Implants: Hydroxiapatite Abutment Surfaces and Skin Reaction

Malou Hultcrantz*

Department of Otorhinolaryngology, Karolinska University Hospital, Stockholm, Sweden

*Corresponding Author:
Malou Hultcrantz
Department of Otorhinolaryngology Head and Neck Surgery
Karolinska University Hospital
17176 Stockholm, Sweden
Tel: +46-8-51775653
E-mail: [email protected]

Received date: April 13, 2017; Accepted date: May 08, 2017; Published date: May 14, 2017

Citation: Hultcrantz M (2017) Case Report after Introducing a New Abutment Surface for Bone Anchored Hearing Implants: Hydroxiapatite Abutment Surfaces and Skin Reaction. J Med Imp Surg 2: 115.

Copyright: © 2017 Hultcrantz M. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



In order to evaluate a new surface of an abutment and its skin reactions when introducing the bone anchored hearing system a clinical investigation was performed. Ten intended subjects were scheduled to receive a hydroxyapatitecoated abutment, using the tissue preserving surgery as a 1 step performance. Only 7 implants were installed due to peri-implant infections. The length of the abutments varied among the patients from 10-12 mm. Appointments were planned 1 week after surgery, at 7 weeks - 3 months, 6 and 12 months after surgery. Skin reactions were graded according to the Holgers´ scale. Unusual severe skin reactions were noted after implantation with the hydroxyapatite abutments, from 1 week to 7 months post-implantation, many of them classified as Holgers´. Some of the implanted persons suffered from pain. Positive bacterial cultures were found in 3 patients all showing Staphylococcus aureus. Good stability of all fixtures was achieved. Only 2 patients used after 1 year the primary implant and abutment.


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