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AuthorTamimi, Zaid Z.
AuthorAbu Alhaija, Elham S.
AuthorAlWahadni, Ahed M.
AuthorAl-Ajlouni, Yazeed
Available date2022-03-15T05:14:05Z
Publication Date2021-01-01
Publication NameJournal of Orofacial Orthopedics
Identifierhttp://dx.doi.org/10.1007/s00056-021-00345-8
CitationTamimi, Z.Z., Abu Alhaija, E.S., AlWahadni, A.M. et al. Bite force changes after surgical correction of mandibular prognathism in subjects with increased vertical dimension. J Orofac Orthop (2021). https://doi.org/10.1007/s00056-021-00345-8
ISSN14345293
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85114002559&origin=inward
URIhttp://hdl.handle.net/10576/28081
AbstractPurpose: 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.
SponsorThis study was supported by the Deanship of Research/Jordan University of Science and Technology (Grant number 44/2018).
Languageen
PublisherSpringer
SubjectMalocclusion, Angle class III
Mandibular prognathism
Occlusal bite force
Occlusal contacts
Orthognathic surgery
TitleBite force changes after surgical correction of mandibular prognathism in subjects with increased vertical dimension: A prospective clinical trial
TypeArticle
ESSN1615-6714
dc.accessType Full Text


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