INBDE (Integrated National Board Dental Examination) Practice Exam

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What is the recommended space maintainer for primary second molar loss if the permanent molar has not erupted yet?

Band and loop
Distal shoe
LLHA
Nance

The correct answer is: Distal shoe

It is recommended to use a distal shoe as a space maintainer for primary second molar loss if the permanent molar has not erupted yet. This is because a distal shoe is specifically designed to guide the eruption of permanent molars while also maintaining the space for them. Option A, a band and loop, may be used if the permanent molar has already erupted. Option C, a LLHA, is typically used for anterior teeth and would not be appropriate in this scenario. Option D, a Nance appliance, may be used if there is loss of both primary second molars and the permanent molars have already erupted.