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Construction of a standard test assembly for controlled laser studies in tissues: Preliminary study on human bone material

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2 Author(s)
Beer, Franziska ; Dental School, Department of Conservative Dentistry, Medical University Vienna, Vienna A1090, Austria ; Passow, Harald

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The aim of the study is the construction of a test assembly, which facilitates objective, comparative studies on the cutting performance of lasers in hard tissue. To ensure the applicability of our own construction for the reproducible performance of laser incisions in hard tissue, eleven freshly extracted blocks (2×1.5 cm2) of human bone were prepared with a Er,Cr:YSGG laser by using a handheld handpiece, respectively, using the constructed device for a standardized cutting. A total of 44 cuts were executed. The specimen were then histologically evaluated. The standard test assembly met the requirements concerning the provision of objective results. The findings of the histological evaluation prove the reproducibility of the results. The standard test assembly presented in this paper facilitates comparative studies of different laser systems by reducing subjective influence on the preparation to a minimum. The results of this preliminary study show that the precision of the guiding instrument for laser cutting reduces the error of cut width by 50-fold, from 50 to 1 μm.

Published in:

Review of Scientific Instruments  (Volume:79 ,  Issue: 2 )