The difference between milk teeth and permanent teeth is different in color, different in form and different in category.
1. Different colors: the enamel of the milky teeth is less mineralized, so the transparency of the enamel is also lower, milky white milky teeth; permanent teeth enamel mineralization is higher, high transparency, gloss is brighter, can be more translucent dentin color, so the permanent teeth are presented as a pearl white slightly yellowish.
2. Morphological differences: the volume of milk teeth relative to the permanent teeth to be small, milk teeth, narrow neck, crown-root demarcation is obvious; permanent tooth demarcation is not obvious, permanent tooth root is straighter, milk anterior root curved to the side of the lip after the root bifurcation degree increased significantly.
3. Different categories: milk teeth are divided into three categories: milk incisors, milk cuspids and milk molars, totaling 20 milk teeth; permanent teeth are divided into four categories: incisors, cuspids, premolars, and molars, with 28~32 permanent teeth (related to whether wisdom teeth erupt or not).