National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

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!

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For mandibular denture impression, which muscle determines the form of the anterior region?

Geniohyoid
Genioglossus
Mylohyoid
Styloglossus

The correct answer is: Genioglossus

The genioglossus muscle is located anteriorly and can have an impact on the form of the anterior region during mandibular denture impression. The other muscles listed are either located posteriorly and would therefore not greatly affect the anterior form, or are not directly involved in the impression process. Mylohyoid, for example, forms the floor of the mouth and is not directly involved in the support or retention of the denture. Styloglossus and geniohyoid muscles are located posteriorly and would have minimal effect on the anterior region during impression. Therefore, B is the most appropriate answer.