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Abstract
This study aimed to investigate the effect of miniscrews thread shape on the stress distribution receiving a torque load. Seven thread shapes (S,V1,V2,B1,B2,R1,R2) models were constructed and a 6 Nmm-torque load was applied. The order of maximum equivalent stress (EQV) value was V1 > V2 > B1 > R1 > R2 > B2 > S. The order of maximum displacement of miniscrew (Max DM) value was S > B2 > R1 = V1 > B1 > V2 > R2. Model R2 may be the most appropriate thread shape affording a torque force.
Acknowledgment
The authors gratefully acknowledge the professor Zhang jinxin from School of public health of SUN YAT-SEN University for his assistance in reviewing the statistical analyses of the data.
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Funding
This research was supported by the Science and Technology Planning Project of Guangdong Province, China (Grant No. A002014004 to SHC); National Science Foundation of China (81503651 to WMY); Natural Science Foundation of Guangdong Province, China (No. 2018A0303130106 to PLZ).