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Impacted mandibular second premolar — NDEB AFK MCQ

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HardOrthodonticsImpacted mandibular second premolarNDEB AFK

A 13-year-old has retained tooth 8.5, absence of eruption of tooth 4.5, and radiographic mesial tipping of 4.5 under the distal root of 8.5. There is mild space loss. What is the most appropriate treatment?

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Correct answer: B — Interceptive extraction and space management assessment

A retained primary molar with impacted or ectopic premolar eruption and space loss requires interceptive planning, often including extraction and space management assessment. Implant placement is inappropriate in a growing patient. The pearl is that retained primary teeth may preserve space in some cases, but ectopic successor position changes management.

Reference: Canadian paediatric dentistry/orthodontic references; NDEB KSAs 2024