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Depth measurements of drilled holes in bone by laser triangulation for the field of oral implantology

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3 Author(s)
Quest, D. ; Institut für Lasermedizin, Universität Düsseldorf, 40225 Düsseldorf, Germany ; Gayer, C. ; Hering, P.

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Laser osteotomy is one possible method of preparing beds for dental implants in the human jaw. A major problem in using this contactless treatment modality is the lack of haptic feedback to control the depth while drilling the implant bed. A contactless measurement system called laser triangulation is presented as a new procedure to overcome this problem. Together with a tomographic picture the actual position of the laser ablation in the bone can be calculated. Furthermore, the laser response is sufficiently fast as to pose little risk to surrounding sensitive areas such as nerves and blood vessels. In the jaw two different bone structures exist, namely the cancellous bone and the compact bone. Samples of both bone structures were examined with test drillings performed either by laser osteotomy or by a conventional rotating drilling tool. The depth of these holes was measured using laser triangulation. The results and the setup are reported in this study.

Published in:

Journal of Applied Physics  (Volume:111 ,  Issue: 1 )

Date of Publication:

Jan 2012

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