Accuracy of torque-limiting devices used for mini-implant placement—an in vitro study

摘要: Mini-implants are used when enhanced orthodontic anchorage is needed. Documented risks include damage inflicted to tooth structures and implant loosening, but also fracture. An important factor in minimizing adverse side effects control the insertion torque. The goal of present study was investigate accuracy various torque-limiting devices available for this purpose. Eight were analyzed, including a group manually-operated drivers (n=3), battery-operated (n=4), surgical unit (n=1). these tested over entire range applicable torque levels, using an experimental design simulating mini-implants. No significant differences noted between within clinically relevant 10–25 Ncm. Comparing individual revealed several differences. Some yielded both effective levels very close set small standard deviations. can be put place controlled fashion regardless whether device purpose manual- or driver unit. However, we observed that limitation differed greatly across groups. Our results therefore help clinicians select appropriate