即刻全口义齿修复者颌弓-牙弓协调性变化的研究  

The Rapport Between Alveolar Arch and Dental Arch in Immediate Complete Denture Wearers

作　　者：苏剑生[1] 郑光榕[1] 

机构地区：[1]上海铁道大学口腔医学院口腔修复学教研室

出　　处：《华西口腔医学杂志》1998年第3期249-250,262,共3页West China Journal of Stomatology

基　　金：铁道部科研基金

摘　　要：对２０例即刻全口义齿修复的患者，进行修复前、修复后戴用３个月以及再次全口义齿修复戴用３个月时颌弓相对宽度的测量，并用吸光度法测定即刻全口义齿戴用３个月时患者的咀嚼效能。结果表明：①即刻全口义齿戴用３个月后，患者牙槽骨水平吸收明显，下颌吸收速度比上颌快（Ｐ＜０．０１），上颌弓趋于变窄，而下颌弓趋于变宽，颌弓－牙弓协调性发生了明显变化。②再次全口义齿修复戴用３个月，患者牙槽骨水平吸收明显减慢，颌弓－牙弓协调性未发生明显变化。③即刻全口义齿戴用３个月时患者的咀嚼效能与颌弓平均吸收率之间呈负直线相关，有高度显著性意义（Ｐ＜０．０１）。结果提示：即刻全口义齿修复未能阻止牙槽骨水平吸收，未能改变牙槽骨水平吸收方向，戴用即刻全口义齿３个月，颌弓与牙弓不协调。patients were selected and the relative width of alveolar arche was measured before extraction of teeth, 3 months after the immediate complete dentures wearing and 3 months after the second complete dentures insertion. At the same time, the masticatory efficiency of the patients wearing the immediate complete dentures for 3 months were measured by using the light absorption method. The results showed: ① The alveolar horizontal absorption was obvious during the first 3 months of immediate complete denture wearing, and the average absorption rate of the mandibular alveolar ridge was higher than that of the maxillary(P<0 01). The maxillary alveolar arches tended to become narrow, and the mandibular alveolar arches tended to become wide. ②The alveolar horizontal absorption was not distinct during the first 3 months of the second complete denture wearing. ③There was a negative correlation between the masticatory efficiency and the average rate of alveolar arch absorption of the patients wearing the immediate complete dentures for 3 months. The results suggest that the immediate complete dentures cannot prevent the alveolar ridges from horizontal absorption, and can not change the direction of alveolar horizontal absorption, so the patients must have another pair of complete dentures after 3 months of wearing immediate complete denture.

关 键 词：颌弓 牙弓 牙槽骨 即刻全口义齿 咀嚼效能 

分 类 号：R783.6[医药卫生—口腔医学]