高原藏族下颌切牙根管形态的研究

目的 :了解高原藏族下颌切牙根管形态 ,为下颌切牙的根管充填提供理论依据。方法 :采用拔除的下颌切牙经透明标本制备 ,在自然强光下观察根管的形态。结果 :74 4%为单根管口、单根尖孔 (1-1) ;6 4%为双根管口、双根尖孔 (2 -2 ) ;13 2 %为单根管口、双根管和单根尖孔 (1-2 -1) ;2 2 %为双根管口、单根尖孔 (2 -1) ;3 8%为单根管口、双根尖孔 (1-2 ) ;2 5 5%有侧、副根管。结论 :不同种族间的根管解剖形态确有差别

Study on the root canal shape of mandibular incisor in Tibetan

Objective:To provide theoretical basis for mandibul ar in cisor root canal filling by the study of the root canal shape of mandibular inci sor.Methods:We used the pulled out mandibular incisor to prepare transparent specimens and observed the shape of root canal in strong natural lig ht.Results:Of the specimens,74 4% were single root canal orific e and single apical foramen(1-1),6 4% were double root canal orifices and double apical foramina(2-2),13 2% were single root canal orifice,double root canals a nd single apical foramen(1-2-1),2 2% were double root canal orifice and single apical foramen(2-1),3 8% were single root canal orifice and double apical foram ina(1-2),and 22 5% had side and accessory root canals.Conclusion: The differences of the anatomical shape of root canal do exist among different races.