INBDE (Integrated National Board Dental Examination) Practice Exam

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Does arch circumference increase slightly in the maxilla from mixed to permanent dentition?

  1. True

  2. False

The correct answer is: True

During mixed dentition, both primary and permanent teeth are present in the oral cavity, creating more space in the arch. As these primary teeth are replaced by permanent teeth during the transition to permanent dentition, the arch circumference may increase slightly due to the larger size of permanent teeth compared to primary teeth. Therefore, this statement is true. Option B is incorrect because permanent dentition typically results in a larger arch circumference compared to mixed dentition, making the statement true.

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