Mandibular molars - Dental Technology: How-To, Tips
The average dimensions of the mandibular second molar are: Crown width (mesiodistal): 10.7 mm. Crown depth (buccolingual): 9.8 mm. Crown length: 8.0 mm. Total apicocoronal length: 22.0 mm. The mandibular third molar shows great variability. It can be found with four or five cusps but also as a three- or six-cusp tooth.