BONE REMODELING IN DENTAL ERUPTION AND SHEDDING 



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adjust their positions within the jaws. In this comphcated proeess, 

 niodehng resorption plavs a dominant role. 



During their hfe span, the tooth germs and the teeth go through 

 the following major phases ( Bhaskar, 1962 ) : growth, movement 

 out of the jaws, and functional adaptation. The remodeling of bone 

 as related to each of these phases will be discussed separately. 



Growth Period 



The tooth germs originate from the oral epithelium and from 

 there extend into the underlying bone. Thev are separated from the 

 latter bv mesenchyme, and the cayity in which they lie is called 

 the bony crypt (Fig. 2). From this point on, the growth, location, 

 and moyement of the tooth germs is dependent upon and closely 

 linked to the modeling changes in the crypt. During the growth 



Fig. 2. A maxillary tooth germ with its bony crypt ( X 10 ^ 



