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CC BY 4.0 · Eur J Dent 2025; 19(04): 893-902
DOI: 10.1055/s-0045-1806932
Review Article

Effects of Micro-Osteoperforation Depths on Canine Retraction Rate and Root Resorption: A Systematic Review and Meta-Analysis

Authors

  • Potjanakorn Inpanya 

    1   Orthodontic Section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand

  • Pannapat Chanmanee

    1   Orthodontic Section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand

  • Supontep Teerakanok 

    2   Periodontic Section, Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand

Funding We would like to thank the Research Promotion and Facilities Unit, Faculty of Dentistry, Prince of Songkla University for the training program on systematic review and meta-analysis workshop and grant support.
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Abstract

This systematic review and meta-analysis aimed to compare canine retraction rates and the amounts of root resorption in different depths of micro-osteoperforations (MOPs) during canine retraction in orthodontic patients. Relevant literature was sought using a prespecified search strategy until May 2024. Electronic medical and scientific databases included PubMed/MEDLINE, Scopus, EMBASE, Web of Science, and the Cochrane's Library (clinical trials). The review protocol was registered in Prospero (CRD42024555722). The data were analyzed in terms of mean difference for comparison using a random-effect meta-analysis. A total of 14 randomized controlled trial studies were included. According to the findings of the meta-analysis on MOPs and their impact on the mean rate of canine movement, the MOP groups showed a significantly higher rate compared with the control groups (weighted mean difference = 0.32; 95% confidence interval [CI], 0.24–0.40; p = 0.00 and weighted mean difference = 0.20; 95% CI, 0.01–0.40; p = 0.04) at depths of 2 to 4 and 5 to 7 mm, respectively. Three studies reported no differences in root resorption between the MOP groups and the control groups. Both MOP depths, that is, 2 to 4 and 5 to 7 mm, accelerated canine retraction more than the controls by approximately 0.32 and 0.20 mm/month, respectively. However, both MOP depths presented root resorption during canine retraction that was not different from the controls.

Keywords

orthodontics - micro-osteoperforation - tooth movement - meta-analysis - systematic review

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Publication History

Article published online:
02 May 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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