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Space maintenance after primary molar loss — NDEB AFK MCQ

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ModeratePaediatric DentistrySpace maintenance after primary molar lossNDEB AFK

A 7-year-old loses tooth 8.5 prematurely. Tooth 4.6 has erupted, tooth 4.5 has not, and the arch length is adequate. What is the most appropriate treatment?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: A — Band-and-loop space maintainer

Premature unilateral loss of a primary second molar after first permanent molar eruption commonly requires a band-and-loop maintainer to preserve space. Observation alone risks mesial drift and loss of arch length. The pearl is that appliance choice depends on tooth lost, eruption stage, arch, and cooperation.

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