The influence on masticatory function after curved osteotomy of prominent mandibular angle / 中华整形外科杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the influence of mandibular curved osteotomy on masticatory function by analyzing the bite force before and after operation.</p><p><b>METHODS</b>From Jan. to Oct. 2008, 20 female cases underwent mandibular curved osteotomy. The maximal bite force in incisor area, bilateral premolar area and molar area was measured before operation and 6 months after operation.</p><p><b>RESULTS</b>The maximal bite force in incisor area, right premolar area, left premolar area, right molar area, left molar area was (11.7 +/- 3.9) kg, (23.2 +/- 1.6) kg, (30.9 +/- 2.3) kg, (35.6 +/- 4.2) kg, (38.5 +/- 3.1) kg, respectively before operation; and was (11.9 +/- 2.1) kg, (23.0 +/- 4.5) kg (31.0 +/- 1.8) kg,(35.9 +/- 3. 5) kg. (38.5 +/- 2.7) kg, respectively 6 months after operation. The postoperative maximal bite force reached the preoperative level, and even slightly above it. There was no significant difference between the measured data before operation and 6 months afterward (P > 0.05).</p><p><b>CONCLUSIONS</b>The curved osteotomy of prominent mandibular angle has no long-term effect on masticatory function.</p>