Dissolving roots: The roots on the primary teeth resorb as the secondary teeth push on them as they erupt.
Answered 1/27/2015
3.3k views
Permanent tooth: A baby tooth become loose and falls out because it is being pushed out of the way by the permanent tooth.
Answered 1/27/2015
3.3k views
2 mechanisms. 1) Roots of baby teeth, which are 3x larger than crown, dissolve away & crown falls out. 2) Underlying permanent teeth grow, as forming roots elongate, and help push baby tooth crowns fall out. See your Dentist for exam/x-ray to find out what's going on.
Answered 2/8/2022
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