The mental nerve (MN) is one of the anatomical structures important to identify, preserve and avoid injure. The knowledge of the layout and anatomical variants of MN is imperative for the performance of surgical procedures involving the chin area. Objective: The purpose of this study was to determine, the location and frequency of emergency hole of MN, accessories nerves, presence of loops and their relations with the alveolar ridge and the mandibular border, by observing prepared anatomical human corpses. Methodology: 31 mandibles of corpses were dissected. Results: It was found that the most frequent distance between the emergency MN with respect to the mandibular alveolar ridge was the range of 11 to 15.5 mm at 57.6% and 11 to 15.5 mm in 72.7% respectively. NM’s relationship with respect to the teeth was that 63.6% of the cases is at the same height of the PMI 2a, 18.2% had accessor...

The mental nerve (MN) is one of the anatomical structures important to identify, preserve and avoid injure. The knowledge of the layout and anatomical variants of MN is imperative for the performance of surgical procedures involving the chin area. Objective: The purpose of this study was to determine, the location and frequency of emergency hole of MN, accessories nerves, presence of loops and their relations with the alveolar ridge and the mandibular border, by observing prepared anatomical human corpses. Methodology: 31 mandibles of corpses were dissected. Results: It was found that the most frequent distance between the emergency MN with respect to the mandibular alveolar ridge was the range of 11 to 15.5 mm at 57.6% and 11 to 15.5 mm in 72.7% respectively. NM’s relationship with respect to the teeth was that 63.6% of the cases is at the same height of the PMI 2a, 18.2% had accessor...

Since the early 1990s, British dentists described the presence of the sphenomandibular muscle as a chewing muscle, then it was studied by Brazilian and Bolivian dentists, still exists the erroneous idea that his presence is real and has been questioned as an independent muscle. Objective: To demonstrate the presence of muscle sphenomandibular as independent muscle and its relationship with the temporal muscle. Material and methods: Followed a special dissection process suggested by Campohermoso et al, to verify the sphenomandibular muscle; they worked with seven human hemicabezas. Results: all specimens studied showed muscle sphenomandibular, checking an insertion in the front part of the bone pterygoid process sphenoid retromaxillary very close to the cleft sphenoidal close to the entrance of the common ocular motor nerve, and an insert lower on the crest o...