20 Dental Anatomy Facts-9

Mandibular 1st molar

171. Groove pattern for the mandibular 1st molar is considered a Y or Dryopethicus pattern.
172. Occlusal outline of Mandibular 1st molar – Pentagon
173. Smallest cusp of Mandibular 1st molar – distal cusp
174. Largest cusp of Mandibular 1st molar – Mesio facial MB>ML>DL>DB>D
175. Mandibular 1st molar – LARGEST M-D crown dimension of ANY other tooth
176. Mandibular molars are the only MANDIBULAR teeth that are wider mesiodistally than faciolingually.
177. Mandibular molars are the only POSTERIOR teeth that are wider mesiodistally than faciolingually.
178. Mandibular 1st molar has the greatest M-D diameter of all MOLARS.
179. Mandibular 1st molar – LARGEST faciolingual crown dimension of ANY other MANDIBULAR tooth. (Attention! Maxillary 1st molar – largest of any tooth)
180. Mandibular 1st molar – Largest occluso cervical crown dimension of any MANDIBULAR molar.
181. Facial surfaces of mandibular molars are located medial to the border of the ascending ramus
182. Key features that differentiates mandibular 1st and 2nd molar – no. of developmental grooves

183. Mandibular 1st molar has 3 facial cusps
184. Developmental groove btn DF cusp and D cusp of the Mandibular 1st molar is Distofacial (NOT DISTAL, Don’t get tricked)
185. Mandibular 1st molar -2 roots & 3 canals
186. Mandibular 1st molar – 2 mesisal canals
187. Mandibular 1st molar – LONGEST root of any other MOLAR
188. Mandibular 1st molar has GREATEST root separation of ANY OTHER tooth.
189. At mid root cross section of Mandibular 1st molar, the largest is the mesial of the mandibular.
190. Mandibular 1st molar – MESIAL root has GREATEST faciolingual dimension of any other root. (think about MB2)

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