摘要
目的:研究C形根管根管口及横断面形态的变化。方法:收集具有C形根管解剖外形的上下颌第二磨牙、下颌智齿、下颌第一前磨牙206颗,用硬组织切片机从根管口向根尖方向每隔0.5 mm连续横切,在显微镜下观察其根管口及根管横断面形态的变化。根据Melton的方法进行分类。结果:206颗C形根管中,C1型根管口59颗,占28.64%;C2型为114颗,占55.34%;C3型33颗,占16.02%。根管横断面形态从根管口到根管中下段形态变化不定。结论:C形根管形态复杂多变,临床行根管治疗时难度较大。
Objective.. To observe the morphological feature of the C-shaped canals and their orifices. Methods： 206 C- shaped canals were selected, and the transverse section from the orifices to apex were made by oral hard tissue cutter consecutively every other 0.5 mm. Then the morphology of the root canals and their orifices were observed under microscope and classified according to the modified Melton＇s method. Results.. The percentages of C1, C2, and C3 were 28. 64%, 55. 34% and 16.02% respectively. Moreover, the morphology of the cross-section from the orifices to apex can have diverse variance. Conclusion： C-shaped canals are complicated, which will increase the difficulty of root canal therapy.
出处
《口腔医学研究》
CAS
CSCD
北大核心
2009年第6期774-775,共2页
Journal of Oral Science Research
关键词
C形根管
根管形态
C-shaped canal Root canal morphology
