期刊论文详细信息
Indian Journal of Dental Sciences
Comparing original and universal screwdrivers in terms of torque loss in the abutment screw
article
Vasilios Alevizakos1  Nadine Achilles2  Bj�rn Rahlf2  Philipp Jehn2  Marcus Schiller2 
[1] Department of Dentistry;Department of Oral and Maxillofacial Surgery, Hanover Medical School
关键词: Abutment screw;    implant;    torque;    universal screwdriver;   
DOI  :  10.4103/IJDS.IJDS_86_20
学科分类:生物科学(综合)
来源: Wolters Kluwer Medknow Publications
PDF
【 摘 要 】

Objective: The aim of this study was to examine whether tightening or loosening the abutment screw results in torque loss and whether there is a difference in this respect between original screwdrivers and universal screwdrivers. Materials and Methods: For the purpose of the study, two groups were formed, with the original screwdriver used in group 1 and the universal screwdriver used in group 2. One Straumann implant and one BEGO implant were each inserted into a stationary torque transducer. The next step was to screw 13 abutments into each implant with 13 original abutment screws, using the screwdriver assigned to the group with the torque specified by the manufacturer. To establish whether the torque transmitted to the abutment screw via the screwdriver is also transmitted to the implant rather than causing deformation of the screw head or being transmitted to the surrounding area, the actual torque transmitted from the screw to the implant was measured and recorded electronically during the experiment. Results: There was no loss of torque in the transmission of the tightening torque to the Straumann implant with either screwdriver ( P > 0.05). There was a loss of torque in the transmission of the tightening torque to the BEGO implant when using the universal screwdriver but not with the original screwdriver ( P < 0.01). Relative to the previously applied tightening torque, a loss of torque when loosening the screw was found with both screwdrivers, both Straumann ( P > 0.05) and BEGO ( P < 0.05). Conclusion: Using universal screwdrivers can result in loss of torque. The loosening torque is thus decreased, which in turn increases the likelihood of complications such as screw loosening.

【 授权许可】

CC BY-NC-SA   

【 预 览 】
附件列表
Files Size Format View
RO202307090000760ZK.pdf 472KB PDF download
  文献评价指标  
  下载次数:17次 浏览次数:1次