Costa Eliana Dantas, Peyneau Priscila Dias, Visconti Maria Augusta, Devito Karina Lopes, Ambrosano Gláucia Maria Bovi, Verner Francielle Silvestre
Gen Dent. 2019 Sep-Oct;67(5):46-49.
Having complete information about a patient's mandibular canal and mental foramen is fundamental to performing safer procedures and avoiding intraoperative and postoperative complications. Cone beam computed tomography (CBCT) produces accurate images for the analysis of maxillomandibular bone structures and is widely used in dentistry. The aim of this study is to report a case of mandibular bifid canal associated with triple mental foramina that was revealed with CBCT images. A 45-year-old woman was referred for a CBCT scan of remaining bone quantity to assist in preoperative implant planning. The patient had reported problems related to anesthesia during extraction of the mandibular right second and third molars. Examination showed bilateral bifurcation of the mandibular canal, from the mandibular foramen to the gonial angle. In addition, exteriorization of the mandibular canal was noticed in 3 regions; that is, there were 3 distinct mental foramina. Clinicians must be aware of these anatomical variations in the mandibular region during dental procedures to avoid complications such as difficulty in obtaining anesthesia or postoperative sensory dysfunction.
掌握患者下颌管和颏孔的完整信息是实施更安全手术并避免术中及术后并发症的基础。锥形束计算机断层扫描（CBCT）能生成用于分析颌骨结构的精确图像，在牙科领域广泛应用。本研究旨在报告一例通过CBCT图像发现的伴有三个颏孔的下颌双管病例。一名45岁女性因剩余骨量的CBCT扫描被转诊，以辅助术前种植计划。该患者曾报告在下颌右第二和第三磨牙拔除过程中与麻醉相关的问题。检查发现下颌管从下颌孔到下颌角呈双侧分叉。此外，在下颌管的3个区域发现有外置情况，即存在3个明显的颏孔。临床医生在牙科手术过程中必须了解下颌区域的这些解剖变异，以避免诸如麻醉困难或术后感觉功能障碍等并发症。
