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A rare case of trifid mandibular canal with bilateral retromolar foramina

Anatomy & Cell Biology 2020년 53권 4호 p.512 ~ 515
Do Quang, Shen Daniel, Ohyama Hiroe, Tubbs R. Shane, Iwanaga Joe,
소속 상세정보
 ( Do Quang ) - Harvard University Harvard School of Dental Medicine
 ( Shen Daniel ) - Harvard University Harvard School of Dental Medicine
 ( Ohyama Hiroe ) - Harvard School of Dental Medicine Department of Restorative Dentistry and Biomaterials Sciences
 ( Tubbs R. Shane ) - Tulane University School of Medicine Department of Neurosurgery
 ( Iwanaga Joe ) - Tulane University School of Medicine Department of Neurosurgery

Abstract


There are many reported anatomical variations of the mandibular canal. Consequently, there is great variation in the retromolar area, such as the quantity, size, and location of the retromolar foramen (RMF), the bony entrance of the retromolar canal (RMC). These variations allow for different accessory innervations to the mandibular molars and their adjacent buccal tissue because the RMC contains neurovascular bundles. Consideration of these anatomical variations is crucial for avoiding complications in anesthesia, implant placement, and surgery. However, the rarer canal types are often only imaged by computed tomography (CT) or cone beam computed tomography (CBCT). We present a rare case with bilateral RMF and a unilateral trifid mandibular canal in a cadaver.

키워드

Mandible; Oral surgery; Anatomy; Anatomic variation; Cadaver

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