本文選題：埋伏牙 + 上頜骨　； 參考：《上�？谇会t(yī)學(xué)》2014年01期

【摘要】：目的:研究上頜前牙埋伏阻生與矢狀骨面型之間的關(guān)系,探討上頜埋伏阻生牙患者的牙頜面形態(tài)特征。方法 :經(jīng)全口曲面體層片篩選出上頜1顆中切牙埋伏、1顆尖牙埋伏及2顆尖牙埋伏阻生患者各30例,進行頭顱定位側(cè)位片的定點、測量、分析。將所測項目值與正常值比較,并根據(jù)ANB角大小分為Ⅰ類骨面型、Ⅱ類骨面型、Ⅲ類骨面型,統(tǒng)計構(gòu)成比。采用SPSS17.0軟件包對數(shù)據(jù)進行t檢驗和χ2檢驗。結(jié)果:3組測量項目中,以2顆尖牙埋伏組的變化項目最多,變化幅度最大。其中,SNA、A’-Ptm’、L1-NB角在3組中均小于正常值;而在1顆或2顆尖牙阻生組,頜凸角、L1-MP角、ANB角、Wits值小于正常值,上、下牙槽座角、U1-NA角、U1-NA距大于正常值;而S’-Ptm’、L1-NB距小于正常值,上、下中切牙角大于正常值僅發(fā)生在2顆尖牙埋伏阻生組。3組的ANB角、Wits值以2顆尖牙埋伏組最小,上、下牙槽座角在2顆尖牙埋伏組中最大。90例患者的矢狀骨面型總體構(gòu)成比以I類骨面型為主,占50%;但在2顆尖牙埋伏組中,Ⅲ類骨面型明顯增多,達到40%。結(jié)論:上頜前牙埋伏阻生使上頜基骨發(fā)育不足,長度變短;尖牙埋伏比中切牙埋伏對上、下頜骨矢狀向位置關(guān)系影響大;2顆尖牙埋伏對矢狀骨面型影響更大,Ⅲ類骨面型趨勢更明顯。
[Abstract]:Objective: to study the relationship between impacted maxillary anterior teeth and sagittal bone type, and to study the morphological features of maxillofacial in patients with maxillary impacted teeth. Methods: 30 cases of impacted maxillary incisor and 30 cases of ambushing of 2 canines were selected from the whole surface of the maxilla. The fixed points of lateral radiographs were measured and analyzed. The item values were compared with the normal values, and according to the ANB angle, they were divided into class 鈪，

本文編號：1931573