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为根管治疗提供解剖学资料,作者研究人前磨牙和磨牙牙根长度和根管宽度。从尸体获取160颗牙齿,把牙根锯开,用卡尺(精确度0.1mm)测量。结果4(?)4根长12.2～17.4mm(14.0±0.33mm),根管口宽1.1±0.2mm,根管中部宽0.8±0.2mm。5(?)5根长12.2～17.2mm(15.33±0.33mm),根管口宽0.9±0.1mm,根管中部宽0.7±0.2mm。6(?)6腭根长12～17.6mm(14.09±0.31mm),根管口宽1.2±0.1mm,远颊根长12.2
To provide anatomic data for root canal therapy, the authors studied root length and root canal width of premolar and molar teeth. Take 160 teeth from the body, saw the root, and measure with a caliper (accuracy 0.1mm). Results 4 (?) 4 length 12.2 ~ 17.4mm (14.0 ± 0.33mm), root canal mouth width 1.1 ± 0.2mm, central canal width 0.8 ± 0.2mm. 5 (?) Length of 12.2 ~ 17.2mm (15.33 ± 0.33mm), root canal mouth width of 0.9 ± 0.1mm, 0.7 ± 0.2mm wide central canal. 6 (?) 6 palate root length 12 ~ 17.6mm (14.09 ± 0.31mm), root canal mouth width 1.2 ± 0.1mm, distal buccal root length 12.2