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Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie

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31-08-2021 | Hyperglycemia | Original Article

Bite force changes after surgical correction of mandibular prognathism in subjects with increased vertical dimension

A prospective clinical trial

Authors: Assistant Professor Dr. Zaid Z. Tamimi, DDS, MDentSci, FFD RCS, Professor Elham S. Abu Alhaija, BDS, PhD, Morth RCS (Ed.), FDS RCS (Ed.), Professor Ahed M. AlWahadni, BDS, MDSc, PhD, FFDRCSI, FDSRCPSG, CPM, FHEA, Dr. Yazeed Al-Ajlouni, BDS

Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie | Issue 4/2023

Abstract

Purpose

Occlusal bite force (OBF) is the most important parameter in assessing biting efficiency. The aim of this study was to record OBF changes after surgical correction of high angle maxillary/mandibular (Max/Mand) class III patients and to compare these with that recorded in class III patients with average Max/Mand angle.

Materials and methods

Initially included were 42 patients with severe class III skeletal malocclusion who were scheduled for orthodontic surgery: group 1—22 patients with increased vertical relationship scheduled for bimaxillary surgery; group 2—20 patients with average vertical relationship scheduled for mandibular setback only. OBF measurements before surgery (T0), at debonding (T1) and at least 3 months after debonding (T2) were recorded using a portable occlusal force gauge. The following were also measured: maximum OBF (MOBF) achieved by the subject on each side, averaged OBF on each side (AOBF) and maximum OBF at the incisal region (MIOBF). At T2, only 33 patients (group 1: 17 and group 2: 16) were included in the analysis due to loss to follow-up.

Results

MOBF increased significantly in group 1, while no significant changes were detected in group 2. MIOBF increased after surgical correction in both groups. Significant increase in MIOBF was observed at T1 (P < 0.001) followed by an insignificant decrease during the observation period (3–6 months after treatment; P > 0.05). The two groups differed significantly in MOBF at T1 and T2, while no statistically significant differences were detected between the groups for MIOBF changes at the various time intervals (P > 0.05). The number of posterior teeth with occlusal contacts increased in both groups. Relapse was detected in group 1 where the number of posterior teeth in contact decreased during the observation period (T1–T2).

Conclusion

OBF greatly improved after surgical correction of the vertical morphology. Correction of high angle mandibular prognathism improves oral function in addition to esthetics.

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Title: Bite force changes after surgical correction of mandibular prognathism in subjects with increased vertical dimension
A prospective clinical trial
Authors: Assistant Professor Dr. Zaid Z. Tamimi, DDS, MDentSci, FFD RCS
Professor Elham S. Abu Alhaija, BDS, PhD, Morth RCS (Ed.), FDS RCS (Ed.)
Professor Ahed M. AlWahadni, BDS, MDSc, PhD, FFDRCSI, FDSRCPSG, CPM, FHEA
Dr. Yazeed Al-Ajlouni, BDS
Publication date: 31-08-2021
Publisher: Springer Medizin
Keyword: Hyperglycemia
Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie / Issue 4/2023
Print ISSN: 1434-5293
Electronic ISSN: 1615-6714
DOI: https://doi.org/10.1007/s00056-021-00345-8

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Bite force changes after surgical correction of mandibular prognathism in subjects with increased vertical dimension

A prospective clinical trial

Abstract

Purpose

Materials and methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Materials and methods

Results

Conclusion

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