Dr.P.R.Begg described a dental classification system based on the relationship of the permanent first molars.

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E.H.Angle described a dental classification system based primarily on the relationship of the permanent first molars to each other.To a lesser extent this system is based on the relationship of the permanent canines to each other.Dr.Angle's system is called the dental classification system because it is concerned with teeth.There is another system,the skeletal classification,which relates to bones.Dr.P.R.Begg studied Australian aboriginal skulls in the 1930s.According to Begg,the survival of our ancestors was affected by the class of dental occlusion they possessed.More Class I occlusions successfully passed to future generations through genetics.

DrPRBegg Described a Dental Classification System Based on the Relationship