The Association of Temporomandibular Disorders and Orthognathic Surgery

Abstract

This retrospective study aimed to determine the prevalence of temporomandibular disorder (TMD) secondary to orthognathic surgery (OGS) in various types of dentofacial deformities, to access the relationship of new onset of TMD in different types of OGS to pain-related TMD and intraarticular TMD, and to evaluate the chronic facial pain, temporomandibular joint (TMJ) function, and masticatory efficiency after OGS. A total of 26 patients who were previously treated with OGS in University Malaya Medical Centre, Kuala Lumpur from January 2005 to June 2015 agreed to participate. The subjects had either undergone bilateral sagittal split ramus osteotomy (BSSRO) or bimaxillary osteotomy (BIMAX). All subjects were assessed using Diagnostic Criteria for Temporomandibular Disorder (DC/TMD). Data collected from patients’ records showed absence of TMD at presurgical stage. The present study showed 42.3% of 26 patients experienced TMD after OGS in various types of dentofacial deformities, 19.2 % of them presented with post-operative facial pain, 30.8 % had limitation in mastication, 19.2 % experienced limitation in mobility of the jaw, and 11.5% of them experienced limitation in verbal and emotional commences. In conclusion, there was no association between prevalence of TMD secondary to OGS in either type of dentofacial deformities or type of surgery involved. We also noted that the minority of the patients suffered chronic facial pain and jaw function limitation after OGS.