Influence of surface treatment on the survival rate of miniscrews: A systematic literature review and meta-analysis.

Abstract

Background: Dental or skeletal anchoring plays a significant role in the orthodontic treatment of various malocclusions. Miniscrews are now regarded as stable skeletal anchoring. Despite their popularity, miniscrew success rates in studies range from 83.9 to 93.3%. Surface treatment is one of its properties that is now being extensively researched and enhanced. Consequently, the purpose of this systematic review is to ascertain how miniscrew surface treatment affects insertion torque, success rate, and removal torque.

Materials and methods: The protocol for conducting a systematic literature review followed the PRISMA criteria. The keywords "mini-implant", "mini-screw", "orthodontic mini screws", "survival rate", and "surface treatment" were used to search electronic databases. This systematic review included human studies published in English within the previous five years that compared the success rates of miniscrews with and without changed surfaces.

Results: Four included studies assessed the effect of surface modification on the success rate; two of them examined the impact on insertion torque, one the removal torque, and one assesed the periotest value. The rough surface group achieved a higher success rate than the non-modified group, although the difference was not statistically significant. The treated surface group had higher removal torque than the non-treated group, but the difference was not statistically significant.

Conclusions: Quantitative and qualitative analysis revealed that surface-treated miniscrews had a greater success rate and insertion torque than non-treated ones, although the difference was not statistically significant.