Eduardo Grossmann

Objective To compare clinical and imaging results of two needles arthrocentesis (TNA) versus double-needle cannula arthrocentesis (DNCA) in the treatment of temporomandibular joint disc displacement (DD). Methods Twenty patients with DD were randomly divided into two groups: TNA and DNCA. Clinical data (pain scores; maximal interincisal distance [MID], and protrusion and laterality movements) were evaluated before and 24 months after the arthrocentesis. Disc and condyle position and joint effusion (JE) were evaluated by magnetic resonance exams. Results Both groups presented improvement in the MID, including pain reduction, modifications in disc and condyle positions, and reduction of the presence of JE, without difference between groups (p> 0.05). The DNCA was performed significantly faster (p= 0.0001). Conclusion Both TNA and DNCA are efficient in promoting improvement in the MID: reduction in pain, modifications in disc and condyle positions, and, in part, may account for less JE, without difference between techniques.

Arthrocentesis is the simplest surgical intervention for the temporomandibular joint (TMJ). It can be performed on an outpatient basis at a low cost and with low morbidity. The objective is to release the articular disc by disrupting the adhesion formed ...

The aim of this study was to evaluate the efficacy of the use of the arthrocentesis in patients with disc displacement without reduction (DDWOR). Two hundred and thirty-four (234) patients with DDWOR were evaluated and the following data collected: gender; affected side; age (years); duration of the pain (months); patient's perception of pain (measured by Visual Analogue Scale [VAS 0–10]); maximal interincisal distance (MID) (mm); and joint disc position, determined by magnetic resonance imaging. Data were obtained in two different moments: before the arthrocentesis (M1) and three or four months later (M2). Paired t-Student Test, Scores Test and Wilcoxon Test showed a statistical significant difference (p0.05). It can be concluded that the arthrocentesis is efficient in reducing the pain, in increasing interincisal distance, and altering the joint disc position in patients with DDWOR regardless gender, age side and pain duration.

To evaluate joint effusion and positioning of the articular disc through magnetic resonance imaging (MRI) before and after two different arthrocentesis techniques.Twenty-six patients with dislocati...