A Study on Success Rate of Miniscrew Implants as Temporary Anchorage Devices During Orthodontic Treatment

Abstract

Background: Achieving stable anchorage has long challenged orthodontic success. Traditional methods depend heavily on patient compliance, often yielding inconsistent results. To address this, temporary anchorage devices (TADs) are gaining prominence, offering superior control. Objectives: To evaluate the success rate of miniscrew implants as temporary anchorage devices during orthodontic treatment. Methods: This comparative cross-sectional study at BSMMU’s Orthodontics Department enrolled patients receiving at least one miniscrew. Clinicians were divided: Group A placed maxillary screws, Group B placed mandibular screws. Data collected included patient age, miniscrew site, placement, loading, removal dates, and clinician. The duration of loading was calculated. Processing involved registration, editing, computerization, dummy table preparation, analysis, and data matching. Results: The mean age was 24.37±5.21 years in Group A and 25.12±5.25 years in Group B (p=0.786), with a female predominance (ratio 0.48:1). Overall miniscrew success rate was 66.25% (53 patients), while 33.75% (27) failed. Maxillary implants showed higher success, but location and position differences were non-significant (p=0.480). Success was higher in the maxilla for both anterior (62.5% vs. 58.3%) and posterior sites (75.0% vs. 64.2%). Expert clinicians achieved significantly higher success than residents (80.0% vs. 58.0%, p<0.05). Conclusion: Miniscrews have gained considerable importance due to their less invasive surgical procedure and easy installation. The present study concluded that the overall success rate was 66.25%. Miniscrews placed in the maxilla were clinically more successful than those placed in the mandible.

Journal of Dentistry and Allied Science, Vol. 9 No 1: 62-71