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Evaluation of bone density using cutting resistance measurements and microradiography: an in vitro study in pig ribs.

Journal article
Authors Bertil Friberg
Lars Sennerby
J Roos
P Johansson
C G Strid
Ulf Lekholm
Published in Clinical oral implants research
Volume 6
Issue 3
Pages 164-71
ISSN 0905-7161
Publication year 1995
Published at Institute of Odontology
Institute of Surgical Sciences, Department of Biomaterials
Pages 164-71
Language en
Links www.ncbi.nlm.nih.gov/entrez/query.f...
Keywords Animals, Bone Density, Bone and Bones, anatomy & histology, radiography, surgery, Hardness, Microradiography, Prostheses and Implants, Ribs, Statistics, Nonparametric, Swine
Subject categories Surgical research

Abstract

A method using cutting resistance measurements during low-speed threading for identification of various bone densities has been evaluated with regard to its precision and potential. Pig ribs were used as test samples. Differing hand pressure, minor deviation (5 degrees) from a vertical tapping direction and individual threading did not reveal any significant differences in cutting resistance values. After implants were inserted into the threaded canals, the total bone as well as trabecular and compact bone areas surrounding the implants were calculated via a computer program and using microradiographs of the bone test samples. The outcome of the cutting resistance measurements was compared with that of the microradiographic technique, and good agreement was observed between the two procedures in the ability to identify bone density. Therefore, cutting resistance measurements may in the future also be used to clinically identify bone qualities in jaws.

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