A1 Refereed original research article in a scientific journal
Bilateral sagittal split surgery is not a predictable treatment for temporomandibular dysfunction in patients with retrognathia
Authors: Kuhlefelt M, Laine P, Thoren H
Publisher: ELSEVIER SCIENCE INC
Publication year: 2016
Journal: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Journal name in source: ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY
Journal acronym: OR SURG OR MED OR PA
Volume: 121
Issue: 6
First page : 595
Last page: 601
Number of pages: 7
ISSN: 2212-4403
DOI: https://doi.org/10.1016/j.oooo.2015.12.011
Abstract
Objective. A prospective study to clarify the impact of forward bilateral sagittal split osteotomy (BSSO) on temporomandibular dysfunction (TMD).Study Design. We examined and interviewed patients with BSSO before and at 1 year after surgery to evaluate the changes in TMD symptoms. A well-known TMD index, which incorporated two complementary subindices-the objective functional Helkimo dysfunction index (Di) and the subjective symptomatic anamnestic index (Ai)-was used. Patients with a forward movement of the mandible and osteosynthesis with titanic miniplates were included.Results. Forty patients (26 females and 14 males, mean age of study population 36.9 years) retrognathia completed the study. There was no change in TMD symptoms in 24 patients (60%), as measured by the Di, and 26 (65%), as measured by the Ai. Twelve patients improved (30%), according to the Di scores and 10 (25%) according to the Ai scores. Four patients had more TMD symptoms at follow-up (10%), as measured by both Di and Ai.Conclusions. Surgery for orthognathia is a predictable treatment for improving aesthetics and occlusion but less predictable for alleviating TMD symptoms in patients with retrognathia. TMD symptoms should therefore be treated independently.
Objective. A prospective study to clarify the impact of forward bilateral sagittal split osteotomy (BSSO) on temporomandibular dysfunction (TMD).Study Design. We examined and interviewed patients with BSSO before and at 1 year after surgery to evaluate the changes in TMD symptoms. A well-known TMD index, which incorporated two complementary subindices-the objective functional Helkimo dysfunction index (Di) and the subjective symptomatic anamnestic index (Ai)-was used. Patients with a forward movement of the mandible and osteosynthesis with titanic miniplates were included.Results. Forty patients (26 females and 14 males, mean age of study population 36.9 years) retrognathia completed the study. There was no change in TMD symptoms in 24 patients (60%), as measured by the Di, and 26 (65%), as measured by the Ai. Twelve patients improved (30%), according to the Di scores and 10 (25%) according to the Ai scores. Four patients had more TMD symptoms at follow-up (10%), as measured by both Di and Ai.Conclusions. Surgery for orthognathia is a predictable treatment for improving aesthetics and occlusion but less predictable for alleviating TMD symptoms in patients with retrognathia. TMD symptoms should therefore be treated independently.
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