INBDE (Integrated National Board Dental Examination) Practice Exam

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Disturbances in apposition result in what condition?

Fluorosis
Tetracycline staining
Hypoplasia
Enamel degradation

The correct answer is: Hypoplasia

Disturbances in apposition result in hypoplasia, which is a condition of incomplete or defective formation or development of enamel. This is not to be confused with fluorosis (A), which is caused by excessive intake of fluoride during the tooth forming years. Tetracycline staining (B) is a discoloration of teeth caused by exposure to tetracycline antibiotics during tooth development. Enamel degradation (D) may be caused by external factors such as acidic beverages or poor oral hygiene, but it is not directly related to disturbances in apposition.