INBDE (Integrated National Board Dental Examination) 2025 – 400 Free Practice Questions to Pass the Exam

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.