VARIATIONS OF THE RELATIONSHIP BETWEEN MAXILLAAND MANDIBLE st nd rd TO CRANIAL BASE IN PERSON WITH 1 , 2 AND 3 CLASS BY ANGLE

<p>Introduction: In 1899. Angle introduced his own classification of malocclusions which was established anteroposterior relationship between maxilla and mandible.Later cephalometric examinations showed possible variations of the relationship between maxilla and mandible to cranial base, in all three classes. The aim work: The aim of this work was to ascertain types of the relationship between maxilla and mandible to cranial base in persons with I,II and III class by Angle. Material and method:The profile telerendgenograms were used in male and female aged aprroximately 14,5 years. On the bases of clinical examination and analysis of models,the patients were previously distributed into three groups with 50 examinees in each,according to Angle classification of malocclusions in saggital plain.SNAand SNB angle were analysed, and on the bases were individual values, the type of the relation between maxilla and mandible to cranial base was determined for every examinee. Results: In persons with Angle I class, eight types of the relationship were determined,while five types in persons with Angle II and III class of the relationship of jaw to cranial base. Conclusion: Because of large number of variationsof the relationship of jaw to cranial base diagnostic procedure should evolve, and treatment of the very similar cases should be different</p>