犬恒牙根管系统的解剖形态

Root canal morphology of permanent teeth in dogs

目的:揭示犬恒牙列根管系统解剖形态的特点。方法:3只成年杂种犬处死后获取其全部126个恒牙(3副完整恒牙列)。经过抽真空法髓腔墨水染色、脱矿、脱水,最后将标本放入乙酰水杨酸甲酯溶液,制作成透明牙。结果:犬牙根管大多单根管,在根尖1～2 mm处发散出大量细小分支。结论:犬恒牙多为单根管但普遍存在着复杂的根尖分歧样结构。

AIM：To investigate the root canal morphology of permanent teeth in dogs.METHODS：A total of 126 permanent teeth from 3 healthy adult mongrel dogs were used for this anatomical study.After the root canal systems were dyed with black ink,the teeth were decalcified,dehydrated,and finally cleared by methyl salicylate.RESULTS：A single main root canal was always present in the permanent teeth of dogs.The root canal terminated at 1～2 millimeters from the apex and divided into numerous apical ramifications.CONCLUSION：The root canals in permanent teeth of dogs always present a very complex apical delta.