Surgery-related factors affecting the stability of orthodontic mini implants screwed in alveolar process interdental spaces: a systematic literature review.

The ambiguous results of scientific researches on surgical factors affecting the stability of mini implants (MI) impels the physicians to constantly analyze this problem. The objective of this article was to conduct a systematic literature review about surgery related factors affecting the stability of MI screwed in alveolar process buccal surface between the second premolar and first molar roots based on peer reviewed publications of 2009-2015. The Cochrane and PRISMA references were used while searching for scientific literature. Two data bases and scientific publications were browsed in the Lithuanian University of Health Sciences library. Criteria for article selection were: 1) research in which surgical factors affecting MI stability were analyzed, 2) research in which stability of MI screwed in alveolar process between adjacent teeth roots was analyzed, 3) research in which MI stability was analyzed in clinical practice, 4) articles which were published in 2009-2015. Selected articles were evaluated in accordance with methodical quality. 13 articles met the selection criteria of the research. 2652 MI screwed in 1205 people jawbones' alveolar processes were analyzed in selected articles. The MI success rate was 87.7-97%. Root proximity was identified to be the main determinant of all MI success influencing surgical factors (MI and root contact determined a 9-26.7% failure rate). The results of this article confirm the sufficient MI stability rate in clinical practice and specifies root proximity as the main surgical factor affecting the MI stability.