Pediatric Dentistry · single question
A space maintainer should be removed when:
Show answer and explanation
Correct answer: B. The permanent incisors and first permanent molars have erupted
Per the source, the maintainer is removed once permanent incisors and first permanent molars have erupted, indicating adequate arch development.
- A. ❌ One-third root completion is a commonly cited guideline but the source specifically states eruption of incisors and molars.
- B. ✅ CORRECT – The space maintainer is removed once the permanent incisors and first permanent molars have erupted.
- C. ❌ Complete resorption is too late; removal should occur when the successor is ready to erupt.
- D. ❌ Age alone is not a clinical criterion for removal.
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