| Summary: | The aim of this study was to evaluate the effectiveness and level of satisfaction of patients who underwent TMJ arthrocentesis under local anesthesia by considering the following parameters: joint pain, mouth opening, mastication, and satisfaction. Fourteen patients (13 women and one man; mean age, 37.6 years with TMJ arthralgia were selected. The patients underwent arthrocentesis under local anesthesia, and pain intensity was measured before, during, and 1 year after treatment using a visual analog pain scale (VAS 0–100 mm). A Likert scale was used to assess patients’ opinion regarding the improvement of mouth opening and mastication. After treatment, patients were questioned on levels of satisfaction provided by arthrocentesis in regard to their quality of life. At the end of 1 year, patients showed a marked improvement in their pain clinical picture (p < 0.0001). Mouth opening and mastication, evaluated separately and then correlated (R2 = 0.925, p < 0.0001), also showed a marked improvement. When questioned, all patients reported being satisfied with the treatment outcome.
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