Long-term stability of an anterior open-bite malocclusion treated in the mixed dentition: a case report

Abstract

A clinical case with anterior open-bite, treated in the mixed dentition, is presented. This approach demonstrates one of the possible approaches of treatment, which is capable of interfering with growth and redirecting its vectors. Orthodontic and orthopedic methods were used, consisting of slow maxillary expansion, through a fixed palatal crib soldered in a bi-helix appliance, and high-pull traction on the mandible for 16 hours a day. After eight years of follow-up, stable outcomes were accomplished. These results may be explained by the fact that treatments were performed at the appropriate period of development, thus establishing perioral muscular equilibrium, matching the final period of facial growth. The combination of orthodontic and orthopedic treatments was necessary to prevent the need of further orthognathic surgery treatment.

Correction of anterior open bite of varying severity using clear aligner therapy—A case series

“…The arch shape, teeth size, and of course the periodontal condition all play a role in the screening of such cases 12 . In case of a mild open bite (e.g.…”

“…Tongue position and size, a persisting thumb sucking habit, occlusal determinants, respiratory problems, and/or adverse hereditary factors are just a few of them. 1 , 12 …”

“…The arch shape, teeth size, and of course the periodontal condition all play a role in the screening of such cases. 12 In case of a mild open bite (e.g. Case 1), it is feasible to get enough relative extrusion in order to fix the problem by CAT alone.…”

“…Several factors, particularly those AOB etiological factors, influence the related stability (or lack thereof). Tongue position and size, a persisting thumb sucking habit, occlusal determinants, respiratory problems, and/or adverse hereditary factors are just a few of them 1,12 …”

“…Tongue position and size, a persisting thumb sucking habit, occlusal determinants, respiratory problems, and/ or adverse hereditary factors are just a few of them. 1,12 In correcting this type of malocclusion, aligners may be more effective than traditional braces, because they have less of an extrusive effect on the back teeth. Laura Talens-Cogollos et.al, 13 recently in a retrospective descriptive analytical study concluded that 74.2% of the subjects presented some degree of molar intrusion after CAT.…”