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Updated: Jul 1, 2026
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Reliability of drilling torque values measured with a novel measurement drill for guiding implant placement protocols
Yusuke Morimoto1, Kazuya Doi1, Reiko Kobatake1
1Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Background:
A novel measurement drill was fabricated to analyze bone density. We hypothesized that evaluating the correlation between primary stability and bone density-assessed using drilling torque values obtained with a novel drill-under various bone density conditions could aid in selecting appropriate implant placement protocols. This study aimed to determine whether drilling torque values measured using the novel drill could serve as a guide for implant placement protocol.
Material And Methods:
Experiments were conducted using solid rigid polyurethane bone blocks corresponding to Misch classifications D2-D4. After measuring the drilling torque, the implant sockets were prepared under two conditions: undersized and normal-sized drilling protocols. The implant was placed, and the insertion torque value was measured as the primary stability.
Results:
A correlation was observed between the drilling and insertion torque values across different bone densities and surgical protocols.
Conclusions:
Drilling torque measurements using the novel drill may be a useful method for selecting appropriate implant placement protocols. Key words:Drilling torque value, Implant, Primary stability, Undersized technique.
