In children, there are eight milk molars, four in each jaw and two in each segment. The two molars in each segment occupy the position which the permanent premolars later on take. The adult molars are thought to belong to the milk dentition. The adult molars cannot appear until the jaw has grown backward sufficiently to make room for them. The milk teeth or temporary teeth differ from the permanent teeth in:
1. milk teeth or temporary teeth have smaller size
2. Milk teeth or temporary teeth are whiter in colour
3. Milk teeth or temporary teeth have greater constriction of their necks
4. Milk teeth or temporary teeth have roots of their molars widely spaced
Man's Dental Formula and the Eruption of Teeth
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