Pediatric Dentistry · single question
After extraction of a primary first molar (tooth S) in a 7-year-old, which space maintainer is indicated for a UNILATERAL primary first molar loss?
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Correct answer: D. Band and loop
- A. A lower lingual holding arch is used for BILATERAL primary molar loss in the mandibular arch.
- B. A distal shoe is used when the SECOND primary molar is extracted before the permanent first molar has erupted — it extends under the gingiva to guide the permanent first molar eruption.
- C. A Nance holding arch is used for BILATERAL primary molar loss in the MAXILLARY arch.
- D. Correct. A band and loop space maintainer is indicated for UNILATERAL loss of a primary first molar (or second molar if the second premolar has not yet erupted). It consists of a band on the adjacent tooth and a loop extending to maintain space.
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