摘要
目的探讨指感法在测量上前牙牙体操作长度的准确度。方法在对68例患者上前牙进行根管治疗前,用指感法测量上前牙牙体操作长度,案再拍X线牙片以判断指感法的准确性。结果68例患者中根尖正常的28例用指感法测量牙体操作长度准确27例,占96.43%,有根尖暗影但根尖孔未被破坏的25例中用指感法测量准确21例,占84%,有根尖暗影并根尖孔已破坏的15例中用指感法测量无一准确。结论指感法测量上前牙的牙体操作长度准确度受根尖孔和根尖区的解剖状态及病变程度的影响。
Objective To discuss the reliability of the method of measuring working length or the upper front teeth by finger-feeling.Methods Working length of the upper front teeth of 68 patients were measured by finger-feeling, results were compared with those obtained from the X-ray measurement. Results The precision of the finger-feeling measurement is 96.43%, 84%and 0 for the cases of normal root apicals, with shadow and without destruction, with both shadow and destruction respectively. Conclusion The precision of measurement by finger-feeling are affected by anatomy condition of apical foramen and apical zone.
出处
《国际医药卫生导报》
2006年第17期89-91,共3页
International Medicine and Health Guidance News
关键词
指感法
牙体操作长度
根管治疗
Finger-feeling, Working length, root canal treatment
