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Prolotherapy, the rehabilitation of ligaments or tendons by induced proliferation of cells by using dextrose, is a noninvasive and effective method for the treatment of temporomandibular joint (TMJ) dislocation. The aim of this study was to evaluate the efficacy of prolotherapy method for the management of acute or chronic dislocation of TMJ.In this study, 10 patients with TMJ dislocation (2 acute, 8 chronic) were examined retrospectively. All patients consisted of female patients, with a mean age of 28.4, who were treated with prolotherapy procedure. Differences of visual analog scale scores in quality of life, pain on function, and chewing function efficacy between sessions were investigated using the Wilcoxon t test and median values of sessions were evaluated using the Kruskal-Wallis H test. The amount of change at the maximum mouth opening occurring between the preoperative and postoperative values and the frequency of locking episodes were calculated, with results considered statistically significant at P < 0.05.Pain on function scores were significantly decreased in all patients, and TMJ locking were not observed during the follow-up period. Maximum mouth opening exhibited a tendency to decrease, but it was not statistically significant. Also, clicking sound on function presented no significant change (P > 0.05). On the other hand, the visual analog scale scores for quality of life showed significant improvement in all patients (P < 0.05).The results of this study show that prolotherapy can be used as an efficient, simple, and conservative method to treat TMJ dislocation.