Kobayashi T, Honma K, Izumi K, Hayashi T, Shingaki S, Nakajima T
First Department of Oral and Maxillofacial Surgery, School of Dentistry, Niigata University, Niigata City, Japan.
Br J Oral Maxillofac Surg. 1999 Dec;37(6):455-8. doi: 10.1054/bjom.1999.0016.
Our objective was to find out the incidence of signs and symptoms of temporomandibular joint (TMJ) and disc displacement in patients with mandibular prognathism. Fifty-one patients were examined clinically and by axial computed tomography(CT). The incidence of TMJ signs and symptoms was 6/25(24%) in patients with simple mandibular prognathism and 12/26(46%) in patients with mandibular prognathism and asymmetry. No discs were displaced in patients with simple mandibular prognathism, but 15(58%) of the patients with mandibular prognathism and asymmetry had displaced discs. There was no association between signs and symptoms of TMJ and disc displacement. Patients with mild protrusion and severe asymmetry of the mandible had a high incidence of disc displacement, which interestingly was on the deviated side in 14 of the 15 patients affected. We conclude that skeletal morphology may have a role in the development of TMJ disorders but the mechanism is obscure.
我们的目的是查明下颌前突患者颞下颌关节（TMJ）体征和症状以及盘移位的发生率。对51例患者进行了临床检查和轴向计算机断层扫描（CT）检查。单纯下颌前突患者中TMJ体征和症状的发生率为6/25（24%），下颌前突伴不对称患者中为12/26（46%）。单纯下颌前突患者中无盘移位，但下颌前突伴不对称患者中有15例（58%）发生了盘移位。TMJ体征和症状与盘移位之间无关联。下颌轻度前突且严重不对称的患者盘移位发生率较高，有趣的是，在15例受影响患者中有14例盘移位发生在偏斜侧。我们得出结论，骨骼形态可能在TMJ疾病的发生中起作用，但机制尚不清楚。
