Comparing the Clinical Success Rate of Self-Drilling and Self-Tapping Mini-screws in the Retraction of Maxillary Anterior Teeth

Mojtaba Sabzijati, Mahdi Rahbar, Fereshteh Shanei, Abbas Salehi-Vaziri, Hassan Ali Ghaffari, Seyed-Alireza Abtahi

Abstract


Objective:To compare the success of self-drilling and self-tapping methods in the retraction of maxillary anterior teeth. Material and Methods:The study was conducted in 57 subjects with Cl II malocclusion who needed to be treated with extraction of four maxillary teeth. The self-tapping method was used on the left side and the self-drilling method was used on the right side. Then, the pain rate of each method was recorded by the numerical rating scale (NRS). Statistical analysis was done by t-test and Chi-square test. The significance level in this study was considered at p-value<0.05. Results:Considering the clinical mobility as the failure, the success of treatment was equal in both methods and was 93%. The inflammation around the mini-screws was 8.8%. A significant relationship was found between the variables inflammation and success (p<0.05). The mean pain was 2.47 but there was no significant difference between the two methods in terms of pain score (p>0.05). There was a significant difference between the groups (p=0.03). The pain was significantly higher in the female. Conclusion:There is no difference between self-drilling and self-tapping methods in terms of success. Comparison of the pain between two genders according to the replantation method showed a significant difference in pain sensation between two genders. The pain sensation mean in female group was greater than male group.


Keywords


Orthodontic Anchorage Procedures; Dental Implants; Osseointegration.

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DOI: http://dx.doi.org/10.4034/PBOCI.2019.191.34

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