wk 12 dental anatomy

mesiobuccal cusp of maxillary first permanent molar occludes with the buccal groove of the mandibular first permanent molar

class I

ideal

class II

class III

molar relationship, same as normal with malposition of individual groups or teeth

molar relationship buccal groove of the mandibular first permanent molar is distal to the mesiobuccal cusp of the maxillary first permanent molar by at least the width of a premolar

mandible is retruded and all maxillary incisors are protruded

mandible is retruded and one or more maxillary incisors are retruded:

molar relationship of the buccal groove of the mandibular first molar is mesial to the mesiobuccal cusp of the maxillary first permanent molar by at least the width of a premolar

incisal edges of the max teeth are within the incisal third of the facial surfaces of the man teeth

incisal edges of max teeth are within the middle third of the facial surfaces of the man teeth

the incisal edges of the max teeth are within the cervical third of the facial of the man teeth.