Pediatric Dentistry · single question

In which situation is a midline diastema most likely to close spontaneously without treatment?

  1. Diastema less than 2 mm
  2. Diastema greater than 2 mm
  3. Any size during mixed dentition
  4. Never closes spontaneously
Show answer and explanation

Correct answer: A. Diastema less than 2 mm

  • A. Correct. Small physiologic diastemas (<2 mm), especially in the 'ugly duckling' stage, commonly close as the permanent canines erupt.
  • B. Diastemas >2 mm are less likely to self-correct and may need evaluation (frenum, missing teeth).
  • C. Spontaneous closure is not guaranteed for 'any size'; size matters.
  • D. Many small midline spaces do close spontaneously, so 'never' is wrong.

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