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Effect of KTP laser on implants used in middle-ear surgery

Published online by Cambridge University Press:  08 March 2006

I. Gerlinger ,
J. Pytel ,
B. Liktor  and
L. Lujber
I. Gerlinger
Affiliation:
Departments of Otorhinolaryngology, Head and Neck Surgery, Medical School, University of Pécs, Pécs, Hungary.
J. Pytel
Affiliation:
Departments of Otorhinolaryngology, Head and Neck Surgery, Medical School, University of Pécs, Pécs, Hungary.
B. Liktor
Affiliation:
Faculty of Health Sciences, Semmelweis University, Budapest, Hungary.
L. Lujber
Affiliation:
Departments of Otorhinolaryngology, Head and Neck Surgery, Medical School, University of Pécs, Pécs, Hungary.
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Abstract

The present study is intended to explore the effects of the KTP laser on various types of implant, used in middle-ear surgery. A laboratory study was undertaken to evaluate the interaction between the KTP laser (KTP-532 Orion Laser, Laserscope, UK) and individual middle-ear implants. A variety of middle-ear implants were used: a silicone sheet, Teflon® , hydroxylapatite, ionomeric cement, gold and titanium prostheses as well as gelfoam. Following exposure to the laser, these implants were studied by direct inspection using an operating microscope.

The KTP laser induced no detectable alteration in any of the implants when they were clean and dry. However, in the presence of fresh blood, under the influence of the energy of the absorbed laser, the silicone burnt and melted and the Teflon® piston was vaporized. Likewise, a few tiny holes appeared on the surface of the ionomeric implant and then the prosthesis deformed. The hydroxylapatite implant broke into two pieces. However, no detectable alteration could be observed on gold or titanium pistons, even in the presence of blood.

The authors conclude, that in the presence of blood, interaction between the KTP laser and both silicone and hydroxylapatite implants needs to be avoided. Teflon® prostheses can be cautiously vaporized. Gold and titanium prostheses were unaffected by laser even in the presence of blood.

Keywords

LasersEar MiddleProstheses and Implants
Type
Research Article
Information
The Journal of Laryngology & Otology , Volume 116 , Issue 7 , July 2002 , pp. 502 - 506
Copyright
© Royal Society of Medicine Press Limited 2002

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