[Openbite in hyperdivergent adult: Le Fort I impaction versus maxillary molar intrusion using bone anchorage. A literature review.]

Abstract

The objective of this study is to compare, based on literature review, the short and long-term efficiency of the correction of anterior openbite in hyperdivergent adults by orthodontics combined with maxillary molar intrusion using temporary anchorage devices (group A), versus maxillary surgical impaction (group B). The articles were retreived from five databases (last update in May 2020). Data selection and extraction are done independently by two reviewers, then validated and gathered after consensus to limit bias. Twelve low to medium evidence level studies meet the inclusion criteria, including two dedicated to jaw impaction surgery. All the studies analyzed short-term dentoskeletal changes, six assessed long-term stability up to 3.5 years for group B and to 4 years for group A. Both groups showed a decrease in anterior facial height and closure of the anterior openbite by mandibular autorotation. The results were stable over the long term for both groups. The orthodontic solution of molar intrusion associated with skeletal anchorage is an alternative to the surgical solution of mild skeletal openbite in adults. Randomized controlled clinical trials with control groups are essential to reach reliable conclusions.