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Title: A biomechanical assessment of the relation between the oral implant stability at insertion and subjective bone quality assessment
Authors: Al Saadi, Ghada ×
Quirynen, Marc
Michiels, Katleen
Jacobs, Reinhilde
van Steenberghe, Daniel #
Issue Date: 29-Mar-2007
Series Title: Journal of clinical periodontology vol:34 issue:4 pages:359-366
Abstract: AIM: The study was set to evaluate the validity of subjective jaw bone quality assessment. MATERIALS AND METHODS: A total of 298 patients (198 females, mean age 56.4) were treated with oral implants at the Periodontology Department at the University Hospital of KUL. A total of 761 TiUnite implants have been installed. Subjective bone quality assessment was performed on radiographs and by the surgeon's tactile sensation and was compared with torque measurements. In a subset of patients, implant stability was also assessed by implant stability quotient and/or periotest values. RESULTS: Subjective assessment of bone quality was related to the PTV, ISQ and placement torque [in the crestal, the second and the apical third (N cm)], respectively; in grade 1: -5.3, 73.3 (4.2, 9.6, 15.2), and grade 3 or 4: -1.6, 55 (3.3, 5.5, 8.4). For the surgeon's tactile sensation, a good correlation was noted for the presence of a thick cortex: -4.6, 70.3 (4.2, 9.7, 15.1), or a thin one: -0.3, 65.9 (3.6, 6.9, 10.1). For dense trabecular bone, the values were -2.8, 69.4 (4.4, 9.7,14.8), while for poor trabecular bone, the values were-1.7, 66.4 (3.6, 6.4, 9.8). CONCLUSIONS: Subjective assessment of bone quality is related to PTV, ISQ and placement torque measurements at implant insertion.
URI: 
ISSN: 0303-6979
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Periodontology
Clinical Residents Dentistry
Oral Imaging
× corresponding author
# (joint) last author

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