Wyatt W M
Department of Oral and Maxillofacial Surgery, Creighton University, School of Dentistry, Omaha, Nebraska 68178, USA.
Quintessence Int. 1996 Feb;27(2):111-3.
Multiple mandibular canals of the bifid variety characterized by a single foramen and two nearly equal canals are unusual (occurrence less than 1%) but not rare. A more unusual case, the occurrence of two separate canals, has been mentioned only twice in the literature, once without documentation. An example of this condition has been found on a routine preoperative radiograph, and no other published examples of this condition could be found in a review of the literature. This case serves as a reminder that multiple canals do occur with some regularity.
具有单个孔和两条几乎等长根管的双叉型多下颌管并不常见（发生率低于1%），但并非罕见。一种更不常见的情况，即两条独立根管的出现，在文献中仅被提及过两次，其中一次没有文献记载。在一张常规术前X光片上发现了这种情况的一个实例，在文献综述中未找到其他已发表的该情况的实例。这个病例提醒我们多根管确实会有一定规律地出现。
