Evaluation of recovery in lip closing pressure and occlusal force and contact area after orthognathic surgery

Abstract Purpose The purpose of this study was to evaluate the relationship between lip closing force, occlusal contact area and occlusal force after orthognathic surgery in skeletal Class III patients. Subjects and methods The subjects consisted of 54 patients (28 female and 26 male) diagnosed with...

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Bibliographic Details
Published in:Journal of cranio-maxillo-facial surgery 2014-10, Vol.42 (7), p.1148-1153
Main Authors: Ueki, Koichiro, Moroi, Akinori, Sotobori, Megumi, Ishihara, Yuri, Marukawa, Kohei, Iguchi, Ran, Kosaka, Akihiko, Ikawa, Hiroumi, Nakazawa, Ryuichi, Higuchi, Masatoshi
Format: Article
Language:English
Subjects:
Adult
Bite Force
Dental Occlusion
Dentistry
Female
Follow-Up Studies
Humans
Lip - anatomy & histology
Lip - physiology
Lip closing force
Male
Malocclusion, Angle Class III - surgery
Mandible - surgery
Mandibular prognathism
Maxilla - surgery
Occlusal contact area
Occlusal force
Orthognathic surgery
Orthognathic Surgical Procedures - methods
Osteotomy, Le Fort - methods
Osteotomy, Sagittal Split Ramus - methods
Pressure
Prognathism - surgery
Recovery of Function - physiology
Retrognathia - surgery
Retrospective Studies
Sex Factors
Surgery
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Summary:Abstract Purpose The purpose of this study was to evaluate the relationship between lip closing force, occlusal contact area and occlusal force after orthognathic surgery in skeletal Class III patients. Subjects and methods The subjects consisted of 54 patients (28 female and 26 male) diagnosed with mandibular prognathism who underwent sagittal split ramus osteotomy with and without Le Fort I osteotomy. Maximum and minimum lip closing forces, occlusal contact area and occlusal force were measured pre-operatively, 6 months and 1 year post-operative. Results Maximum and minimum lip closing forces, occlusal contact area and occlusal force increased with time after surgery, however a significant increase was not found in the occlusal contact area in women. In increased ratio (6 months/pre-operative and 1 year/pre-operative), the maximum lip closing force was significantly correlated with the occlusal contact area ( P  
ISSN:1010-5182
1878-4119
DOI:10.1016/j.jcms.2014.01.047