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Developmental enamel defects are most commonly seen in:

 # Developmental enamel defects are most commonly seen in:
A. Primary incisors
B. Primary second molar
C. Permanent incisors
D. Permanent first molar


The correct answer is C. Permanent incisors. 

Clinical studies indicate that most cases of enamel hypoplasia involve those teeth that form within the first year of birth, mainly the central and lateral incisors, cuspids, and first molars. 

• Amelogenesis imperfecta: All teeth of both dentitions are affected to some degree. In some cases, the teeth may appear essentially normal. 

• Hypoplasia due to nutritional deficiency and exanthematous fevers: The teeth most frequently involved are central & lateral incisors, cuspids, and first molars. 

• Enamel hypoplasia due to congenital syphilis: Maxillary & mandibular permanent incisors & the first molars are involved. 

• Enamel Hypoplasia due to local infection or trauma: Most commonly one of the permanent maxillary incisors or a maxillary or mandibular premolar is involved. 


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