INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

For which teeth is the D slope greater than the M slope, with exceptions?

Primary mandibular canine and permanent mandibular premolar
Primary maxillary canine and permanent maxillary premolar
Primary mandibular incisor and permanent mandibular molar
Primary maxillary molar and permanent maxillary canine

The correct answer is: Primary maxillary canine and permanent maxillary premolar

The option B is correct because, in general, the D slope refers to the distal (back) slope of a tooth and the M slope refers to the mesial (front) slope of a tooth. The maxillary (upper) teeth have a larger and deeper D slope than the mandibular (lower) teeth. However, there are exceptions, such as the primary maxillary canine and permanent maxillary premolar, which have a smaller D slope compared to the M slope. This is because the primary maxillary canine is a smaller tooth and the permanent maxillary premolar has a more equal D and M slope. Therefore, for these specific teeth, the D slope is not greater than the M slope, unlike the majority of other teeth. This is why the other options are incorrect as they do not have this exception.