INBDE (Integrated National Board Dental Examination) Practice Exam

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What might a failure in the bell stage result in?

Amelogenesis imperfecta or dentinogenesis imperfecta
Early tooth decay
Tooth misalignment
Delayed tooth eruption

The correct answer is: Amelogenesis imperfecta or dentinogenesis imperfecta

A failure in the bell stage results in abnormalities in tooth structure that can result in amelogenesis imperfecta or dentinogenesis imperfecta. This occurs due to the interruption of ameloblasts and odontoblasts, which are responsible for the formation of the enamel and dentin layers of the tooth, respectively. Tooth decay (option B) is caused by bacteria, not a failure in the bell stage. Tooth misalignment (option C) is caused by mechanical factors and not related to the stage of tooth development. Delayed tooth eruption (option D) is due to a delay in the growth of the tooth, which may be caused by various factors but is not specific to the bell stage of development.