The use of micro-osteoperforation concept for accelerating differential tooth movement



      To evaluate the effectiveness of micro-osteoperforation technique for rapid canine retraction.

      Methods and Materials

      Twenty adult patients with a mean average age of 28 years (12 men and 8 women) having Class I dental malocclusion who required extraction of the four first premolars were included in this single-blinded prospective split-mouth clinical trial. Each side of the patients' jaws were randomly divided into interventional and control groups. The interventional group of maxilla and mandible received micro-osteoperforations with two holes using a bone screw and a handheld screwdriver. The primary predictor variable was the micro-osteoperforations. The outcome variable was the rate of canine movement, which was estimated by comparing pre- and posttreatment location of canine and second premolars through digital models in Ortho Analyzer software, after 28 days. The statistical evaluation of the findings was performed using SPSS software. Parametric tests (t test) were used to compare the treatment efficacy.


      Micro-osteoperforations significantly increased the rate of tooth movement by more than 2-fold (P = 0.000). However, comparing the differences in the rate of tooth movement when maxillary and mandibular canine retraction, in both interventional and control side yielded insignificant results (P > 0.05).


      Micro-osteoperforations with two holes by application of the simple and less costly method presented in this study is an effective and time-preserving treatment modality.


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