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Morphology of roots and canals in maxillary first premolars
Author(s): 
Pages: 121-123
Year: Issue:  1
Journal: JOURNAL OF PRACTICAL STOMATOLOGY

Keyword:  牙齿解剖前磨牙的形态牙髓腔;
Abstract: 目的:观察上颌第一前磨牙的牙根及根管形态.方法:115 个离体的上颌第一前磨牙,对牙齿进行近远中向X线照像,然后从根中1/3横断,按Vertucci:分类法对根管系统进行记录.结果:74个牙是单根(64%),41 个牙是双根(36%), 双根牙根管均是Ⅰ型(1),即每个牙均是2 个根管,每个根1 个根管,而39%的单根牙是1 个根管,61%的单根牙有2 个根管[Ⅱ型(2-1), Ⅳ型(2), Ⅴ型(1-2) ].结论:上颌第一前磨牙的根管类型相对复杂.
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