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30.01—31.00mm 30.0—30.9mm 29.5—30.4mm 29.1—31.0mm
28.5mm; 28.25mm; 28.1mm; 28.75mm。
28.0~28.9mm 28.01~29.00mm 27.5~28.4mm 27.1~29.0mm
27.0~27.9mm 26.5~27.4mm 27.00~27.99mm 26.0~28.0mm
28.50~29.49 29.0~29.9 29.01~30.00 29.01~31.00
"-6.16mm 6.16mm "-8.16mm 8.16mm
1958年Ingle提出根管预备器械标准化 ISO器械的号码以器械尖端直径为准 器械刃部的长度有4种长度:21mm,25mm,28mm和31mm 器械编号为10号~140号 ProTaper和ProFile属于非ISO器械
29.01~30.00 28.5~29.4 29.0~29.9 28.0~30.0
730mm,930mm 800mm,930mm 730mm,1020mm 800mm,1020mm
28.0~28.9 28.01~30.00 28.0~29.9 28.01~29.00