目的研究下鼓室窦的形态及变异，为下鼓室及迷路下显微外科手术提供应用解剖学资料。
Objective To provide applied anatomic data for the microsurgery of hypotympanum and infralabyrinthine by studying the shape and variation of hypotympanumic sinus.
但有资料表明下颌切牙的根管解剖形态较为复杂，变异较多。
However, some research data show that mandibular incisors' root canal anatomy is comparatively complex, and root canal system has many variations.
具有单一肌腹，远侧肌腱分别附着于小指和无名指者占3.79%，此型小指伸肌为系统发生的形态变异，具有比较解剖学意义。
We discovered that the tendons in 3.79% of upper extremities arose from a single belly and inserted into the little finger and ring finger. The discovery has significance in morphology a…
具有单一肌腹，远侧肌腱分别附着于小指和无名指者占3.79%，此型小指伸肌为系统发生的形态变异，具有比较解剖学意义。
We discovered that the tendons in 3.79% of upper extremities arose from a single belly and inserted into the little finger and ring finger. The discovery has significance in morphology and com...
摘要目的采用锥形束ct (CBCT)探讨上颌第一前磨牙根管的解剖形态，了解其常规形态及变异形态。
Abstract: Objective to investigate the canal morphology of maxillary first premolar using cone-beam ct (CBCT) and to know its generic and variant forms.
摘要目的采用锥形束ct (CBCT)探讨上颌第一前磨牙根管的解剖形态，了解其常规形态及变异形态。
Abstract: Objective to investigate the canal morphology of maxillary first premolar using cone-beam ct (CBCT) and to know its generic and variant forms.
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