成人三級異常咬合者顱底形態之研究

Morphology of the Cranial Base in Adult Taiwanese with Class Ⅲ Malocclusion

張文蓁(Wen-Chin Chang) ； 張宏博(Hong-Po Chang)

《中華民國齒顎矯正學雜誌》 15卷3期 (2003/09) Pp. 5-10

摘要

三級異常咬合者之顱底形態爲何？目前尚未十分瞭解。本研究之目的，評估成年人正常咬合者與三級異常咬合者，顱底部形態是否有所差異。採用台灣成年人側方測顱X片共200張，其中正常咬合者女性和男性各50張，而三級異常咬合者女性與男性各50張。使用測顱分析法探討兩組差異處。統計分析的結果發現，顱底形態在統計學上有明顯的差異。結論是三級異常咬合與正常咬合者之顱底形態的確有所不同，不同的原因可能是三級異常咬合者不足的頭顱發育，或顱底發育過程發生平坦化失敗。

關鍵字

三級異常咬合 ； 顱底 ； 測顱分析

並列摘要

The association between the cranial base morphology and the Class Ⅲ malocclusion is still not fully understood. The purpose of this study was to investigate the morphological characteristics of the cranial base in adult Taiwanese Class Ⅲ malocclusion. Lateral cephalographs of 100 Taiwanese adults included equalnumbers of male and female individuals, with Class Ⅲ malocclusion were compared with their counterparts with a normal occlusion. Fourteen land marks on the cranial base were indentified and digitized. Cephalometric analysis, utilizing 7 linear and 4 angular measurements, were undertaken. Results indicated that the cranial base morphology differed statistically significantly between the two groups. It is concluded that the shape of the cranial base differs in subjects with Class Ⅲ malocclusion compared with the normal occlusion configuration, due to deficient orthocephalization, or failure of the cranial base to flatten during development.

並列關鍵字

Class Ⅲ malocclusion ； cranial base ； cephalometric analysis