Raustia A M, Salonen M A
Department of Prosthetic Dentistry and Stomatognathic Physiology, Institute of Dentistry, University of Oulu, Finland.
J Oral Rehabil. 1997 Jul;24(7):512-6. doi: 10.1046/j.1365-2842.1997.00532.x.
It has been accepted that the shape of the mandibular base, and especially the gonial angle of the mandible, correlates with the function of the jaw closing muscles. The gonial angles of the mandible and condylar and ramus heights of 30 complete denture wearers (18 women, 12 men, mean age 61 years, range 42-74 years) coming for renewal of their dentures were measured using panoramic radiographs. The mean period of edentulousness was 26 years (range 10-53 years). No statistically significant difference was observed between the sexes in the the sizes of gonial angles and condylar and ramus heights. The right gonial angle was statistically significantly smaller than the left one and correlated negatively with the ramus height in both sides but positively with the increased EMG activity in the right masseter muscle. The size of the gonial angle and the condylar and ramus heights did not correlate with the age of the patients, edentulous period or alveolar ridge resorption.
下颌骨基部的形状，尤其是下颌角，与咬肌功能相关，这一点已被广泛认可。使用全景X线片测量了30名前来更换假牙的全口义齿佩戴者（18名女性，12名男性，平均年龄61岁，年龄范围42 - 74岁）的下颌角以及髁突和升支高度。平均无牙期为26年（范围10 - 53年）。在下颌角大小以及髁突和升支高度方面，未观察到性别之间存在统计学上的显著差异。右侧下颌角在统计学上显著小于左侧，并且与两侧的升支高度呈负相关，但与右侧咬肌肌电图活动增加呈正相关。下颌角大小以及髁突和升支高度与患者年龄、无牙期或牙槽嵴吸收均无相关性。
