上颌第一磨牙腭侧双根双管较少见。本文报道2例腭侧双根双管的上颌第一磨牙及其治疗方法,提示正确全面的髓腔入口的设计以及仔细的探查对于非典型解剖结构根管的发现有很大的帮助。%Maxillary first molar with twin-root canal in palatal side is rare. This article described two cases of maxillary first molar with twin-root canal. A properly designed and prepared access of the cavity is helpful for the diagnosis and nego-tiation of the root canal morphology.
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