Abstract
pathology by an oral and maxillofacial surgeon or TMJ specialist. Ordinal variables obtained included maximal incisal opening (MIO) at preoperative, 1 month, 3-6 months and 1+ year follow up visits. Secondary variables obtained included prior history of TMJ surgery and incidence of surgical complications. Other variables recorded included age at time of surgery and gender. SPSS statistical software, version 21 was used. Oneway analysis of variance (ANOVA) and non-parametric tests were utilized and statistical significance was set at a p-value of 1year intervals were equivalent (p>0.05). Average improvement in range of motion after 1 year when compared to preoperative values was greater in the DJD group (mean = 8mm increase in MIO) than painless hypomobility/trauma/malocclusion group (mean = 3mm increase in MIO). Interestingly, a prior history of open joint surgery affects mandibular range of motion at all time intervals except 1-month post TJR surgery (p<0.05). The rate of postoperative complications was 58%, although the vast majority were neurologic deficits that recovered by 1-year postoperative.
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