What is the amount of time required by erupting premolar to move through 1 mm of bone as measured on a bite - wing radigraph ?
Correct answer: A. 4-5 months
- A. 4-5 months
- B. 3-4 months
- C. 5-6 months
- D. 6-7 months
Explanation
An erupting premolar typically takes about 4 to 5 months to move through 1 mm of overlying bone. This slow movement reflects the limited rate of pre-eruptive tooth movement through bone.
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