What is the amount of time required by erupting premolar to move throu – McqOptions

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1.	What is the amount of time required by erupting premolar to move through 1 mm of bone as measured on a bite – wing radigraph ?
A.	3-4 months
B.	4-5 months
C.	5-6 months
D.	6-7 months
Answer» C. 5-6 months

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