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Etiology of Malocclusion


CONTENTS
Introduction.
Orthodontic Equation.
Primary Etiologic site.
CLASSIFICATION OF ETIOLOGICAL FACTORS :General Factors :-
Hereditary
Hereditary racial Influence
Hereditary facial type
Hereditary Influence on Growth and developed
Hereditary or specific dentofacial morphologiccharacteristics
Teratogenic effects of drugs.
Congenital defects
Environmental factors
Nutritional deficiency.
Systemic disease and Endocrinal disorders
Abnormal pressure habits
Trauma
PostureLOCAL FACTORS
Anomalies of tooth function.
Anomalies of number.
Anomalies of Tooth size and shape.
Abnormal labial frenum.
Premature loss of deciduous teeth.
Prolonged retention and abnormal resorption of deciduous teeth.
Delayed eruption of permanent teeth
Abnormal eruptive path.
Ankylosis.
Local disease.
Improper dental restoration.

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