alexa Miniscrews and Mini-Implants Success Rates in Orthodont
ISSN: 2161-1122

Dentistry
Open Access

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Research Article

Miniscrews and Mini-Implants Success Rates in Orthodontic Treatments: A Systematic Review and Meta-Analysis of Several Clinical Parameters

Riccardo Beltrami1*, Francesca Sfondrini2, Laura Confalonieri3, Lorenzo Carbone4 and Luisa Bernardinelli5

1Department of Brain and Behavioral Sciences, Section of Statistics, University of Pavia, Pavia, Italy

2Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, Section of Orthodontics, University of Pavia, Pavia, Italy

3Private Practice, Pavia, Italy

4Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, Section of Orthodontics, University of Pavia, Pavia, Italy

5Department of Brain and Behavioral Sciences, Section of Statistics, University of Pavia, Pavia, Italy

*Corresponding Author:
Riccardo Beltrami
DMD, Ph.D. Student, Department of Brain and
Behavioral Sciences, Section of Statistics, University of Pavia,
Cascina Cravino, Via Bassi 21, 27100 Pavia, Italy
Tel: +39 3287048905
E-mail: [email protected]

Received date : November 06, 2015; Accepted date : December 01, 2015; Published date : December 08, 2015

Citation: Beltrami R, Sfondrini F, Confalonieri L, Carbone L, Bernardinelli L (2015) Miniscrews and Mini-Implants Success Rates in Orthodontic Treatments: A Systematic Review and Meta-Analysis of Several Clinical Parameters. Dentistry 5:346. doi:10.4172/2161-1122.1000346

Copyright: © 2015 Beltrami R, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



 

Abstract

Introduction: The aim of the following research is to conduct a systematic review in order to update the actual knowledge about miniscrews in the clinical practice, in particular about their stability and reliability.

Methods: An electronic search in the main database was performed up to February 10th, 2015 to identify articles that complied with the parameters set out in the protocol. The selection included studies showing the success rate of mini-implants for a sample exceeding 5 miniscrews, giving a definition of success, using implants with a diameter <2.5 mm and applying forces for at least 3 months. The success rate was considered as a paradigm and was divided by the following variables namely age and sex of patients, length and diameter of the miniscrew, location and method of placement of mini-implants, time and amount of loading. A meta-analysis was performed to combine comparable results.

Results: 65 clinical trials that collected 4080 patients and 8524 screws were included in the study. The mean weighted overall success rate was 86.75 ± 8.48%. The maxilla represents a better placement site for insertion than the mandible. The lengths of the miniscrews do not compromise the success rate.

Conclusions: In all 65 articles miniscrews could be used to help orthodontic treatment. The usage of miniscrews for a stable period of 3 months showed the highest success rates. Screws less than 8 mm in length and 1.2 mm in diameter should be used under restricted conditions, while miniscrews longer than 10 mm could be avoided.

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