National Dental Examining Board of Canada (NDEB) Practice Exam

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For which malocclusion is the Frankel functional regulator most commonly used?

  1. Treating Class I

  2. Treating Class II Div 1

  3. Treating Class II Div 2

  4. Treating Class III

The correct answer is: Treating Class II Div 2

The Frankel functional regulator is most commonly used for treating Class II Division 2 malocclusion. This is because the Frankel regulator is a type of functional appliance that helps to correct a retrusive upper jaw, which is a common characteristic of Class II Division 2 malocclusion. It is not as effective for treating Class I or Class II Division 1 malocclusions, which have different underlying issues such as overcrowding or an overjet. It is also not used for treating Class III malocclusions, which involve an underbite and require different treatment approaches. Therefore, the correct answer is C.

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