Title of article :
Comparison of Opening Torque of Grooved and Non-grooved Memory Alloy Screws for Mandibular Fracture Fixation
Author/Authors :
Movahhedian, Bijan isfahan university of medical sciences - Dental School - Department of Oral Maxillofacial, ايران , Ghods, Shadab shahid beheshti university of medical sciences - Department of Periodontology, تهران, ايران , Azadi, Anahita shahid beheshti university of medical sciences - Department of Periodontology, تهران, ايران , Kadkhodazadeh, Mahdi hamadan university of medical sciences - Dental School - Department of Periodontics, ايران
Abstract :
Background and aims. The aim of this study was to assess the opening torque of grooved and non-grooved screws made of shape memory alloys (SMA) for fixation of mandibular fractures.Materials and methods. In this in vitro study the opening torques of ten SMA screws with grooves and ten SMA screws without grooves were compared in 20 holes (10 holes for grooved screws and 10 holes for non-grooved screws) placed in the bovine mandible. Statistical significance was set at P 0.05.Results. The mean opening torque was 2.27 ± 0.43 nm for screws in the control group and 2.05 ± 0.45 nm for screws in the grooved group (P 0.05, P = 0.08).Conclusion. This study revealed that the torque needed for opening the grooved screws was higher in comparison withcurrent fixation screws; however, the difference was not statistically significant.
Keywords :
Bone , implant , mandibular fixation , shape memory alloys (SMA) , torque
Journal title :
Journal of Advanced Periodontology and Implant Dentistry
Journal title :
Journal of Advanced Periodontology and Implant Dentistry
