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Journal of Applied Physics / Volume 111 / Issue 1 / ARTICLES / Lasers, Optics, and Optoelectronics

J. Appl. Phys. 111, 013106 (2012); http://dx.doi.org/10.1063/1.3676219 (5 pages)

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

D. Quest, C. Gayer, and P. Hering

Institut für Lasermedizin, Universität Düsseldorf, 40225 Düsseldorf, Germany

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(Received 22 July 2011; accepted 7 December 2011; published online 12 January 2012)

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.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. METHOD
    1. Experimental setup
    2. Measuring procedure
  3. RESULTS AND DISCUSSION
  4. CONCLUSION

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KEYWORDS, PACS, and IPC

Keywords

biomechanics, biomedical measurement, bone, dentistry, laser applications in medicine, prosthetics, spatial variables measurement, surgery

PACS

International Patent Classification (IPC)

  • A61B5/00

    Measuring for diagnostic purposes; Identification of persons

  • A61B17/00

    Surgical instruments, devices or methods, e.g. tourniquets

  • A61C

    Dentistry; Apparatus or methods for oral or dental hygiene

  • A61F2/02

    Prostheses implantable into the body

  • G01B

    Measuring length, thickness or similar linear dimensions; Measuring angles; Measuring areas; Measuring irregularities of surfaces or contours

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3676219

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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Figures (7) Tables (3)

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