الفهرس 
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Abstract
This study was conducted for the purpose of shedding light on the measurements front rear اشعات the side of the head to determine the relationship between the jaws and the position of the lower jaw and the upper jaw position in order to choose the best way for each purpose.
Has been This Alrash had 80 people of both sexes Mtsawinn the number and average age of between 18 and 22 years.
They are representatives of the Faculty of Dental Medicine - Mansoura University and satisfactory clinics emerging in the Department of Orthodontics. Was conducted clinical tests on all of them and Ksmo into three groups.
Group A: made up of 40 people had their teeth acceptable dishes and few voids teeth were very and Kzelk turnover teeth with a slight increase in the depth of the teeth dishes from the normal situation.
Group B: made up of 20 people and they have the emergence in the upper jaw and the delay in the lower jaw.
Group III: made up of 20 people and have the dishes my teeth and Reverse concave side view.
The took اشعات the side of the head and teeth in place for all people.
Then, after drawing rays were selected points, levels and arcs and angles used.