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VOLUME 23 , ISSUE 8 ( August, 2022 ) > List of Articles


Effect of Frequency of Micro-osteoperforation on Miniscrew- supported Canine Retraction: A Single-centered, Split-mouth Randomized Controlled Trial

Sudhakar Venkatachalapathy, RajVikram Natarajan, Uma Maheswari Ramachandran, Premkumar Rajakumar, Sumanth Rangarajan, Digvijay Patil, Vijayasri Manickavasagam

Keywords : Accelerated orthodontics, Canine retraction, Micro-osteoperforation, Rapid tooth movement

Citation Information : Venkatachalapathy S, Natarajan R, Ramachandran UM, Rajakumar P, Rangarajan S, Patil D, Manickavasagam V. Effect of Frequency of Micro-osteoperforation on Miniscrew- supported Canine Retraction: A Single-centered, Split-mouth Randomized Controlled Trial. J Contemp Dent Pract 2022; 23 (8):781-787.

DOI: 10.5005/jp-journals-10024-3385

License: CC BY-NC 4.0

Published Online: 29-11-2022

Copyright Statement:  Copyright © 2022; The Author(s).


Aim: The present study aimed at evaluating the increase in the rate of tooth movement by increasing the number and frequency of micro-osteoperforations (MOPs). Materials and methods: The study was a single-center, split-mouth, randomized controlled trial. A total of 20 patients were included in the study who had fully erupted maxillary canines with class I molar canine relationship and a bimaxillary protrusion that required the removal of both maxillary and mandibular first premolars. Out of 80 samples, the experimental and controlled groups were randomly assigned. The experimental group received five MOPs in the extracted site of the first premolar before retraction, at 28th day and 56th day. The control group received no MOPs. The rate of tooth movement was measured on 28th, 56th, and 84th day on both the experimental and control sides. Results: In maxillary dentition, the canine on the MOP side moved by 0.65 ± 0.21 mm, 0.74 ± 0.23 mm, and 0.87 ± 0.27 mm during 28th, 56th, and 84th day, respectively, whereas in control side the rate of tooth movement was 0.37 ± 0.09 mm, 0.43 ± 0.11 mm, and 0.47 ± 0.11 mm during 28th, 56th and 84th day, respectively, which was statistically significant (p-value = 0.000). In mandibular dentition, the canine on the MOP site has moved by 0.57 ± 0.12 mm, 0.68 ± 0.21 mm, and 0.67 ± 0.10 mm during 28th, 56th, and 84th day, respectively, whereas in control side the rate of the tooth movement was 0.34 ± 0.08 mm, 0.40 ± 0.15 mm, and 0.40 ± 0.13 mm during 28th, 56th, and 84th day, respectively, which was statistically significant. Conclusion: Micro-osteoperforations effectively increased the rate of tooth movement. Overall, MOPs increased the rate of canine retraction by 2-fold when compared with the control group. Clinical significance: Micro-osteoperforation is a proven methodology to increase the rate of tooth movement and decrease the treatment time. However, it is important to repeat the procedure during every activation to increase its effectiveness.

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