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What is Which one of the following has maximum familial tendency? and explain in detail?
Facial forms and malocclusions that have a strong familial tendency are:

Severe deep bite
Class II division 2 pattern
Skeletal open bite
Mandibular prognathism
Bimaxillary protrusion
Mandibular retrognathism
Severe crowding/spacing
Median diastema

Ref:Orthodontics: Diagnosis and Management of Malocclusion and Dentofacial Deformities 3rd ed O P Kharbanda pdf no 751