People will have two teeth in their lives, namely deciduous teeth and permanent teeth, deciduous teeth are the baby's growth in infancy, and when they reach a certain age, the deciduous teeth will fall out, and then grow permanent teeth.
Generally, the time to change teeth is when the child is 6 or 7 years old, but there are exceptions, many children are past that age, and they still refuse to lose their teeth! In this regard, many parents mistakenly believe that the child is deficient in calcium, or lack of trace elements, which causes the child to change teeth late. But in fact, the child's teeth change sooner or later has little to do with calcium deficiency
Is it normal to change teeth late?
What does it have to do with it? 】
Note: Due to individual differences, it is normal for 5 to 7 years of age to change teeth, and late tooth change may be due to the following reasons:
1. Deciduous tooth caries causes apical periodontitis, resulting in abnormal root absorption of deciduous teeth;
2. Deciduous tooth trauma or apical periodontitis, resulting in abnormal germination direction of inherited permanent teeth;
3. Congenital defect of inherited permanent teeth;
4. There are systemic diseases: rickets, cranial and clavicle abnormalities syndrome, etc.;
5. The food is too fine, and the chewing intensity and frequency are reduced, which is not conducive to the development of the jaw and the loss of deciduous teeth.
Therefore, it is recommended that after the child is 5 years old, go to the dentistry to take a panoramic picture to observe the development of the permanent tooth embryo, and regularly see the child dentist during the tooth replacement period to rule out abnormal tooth replacement. In terms of daily diet, more chewy foods should be eaten to promote jaw development and normal tooth replacement.
[Is it normal for the new permanent teeth to be yellower than the deciduous teeth?] 】
The color of the child's newly changed front teeth is yellow, not as white as the deciduous teeth, which is actually a normal phenomenon.
The surface part of our crown is hard tooth enamel, compared to deciduous teeth, the enamel mineralization of permanent teeth is better, the crystals are neatly arranged, the light transmittance is high, and the yellow of the inner dentin can be revealed from the outside.
Therefore, the newly grown permanent teeth will look yellower than the deciduous teeth, but they should be more shiny.
The enamel mineralization of deciduous teeth is relatively poor, the light transmittance is also poor, and the yellowish color of dentin is obscured, so it appears "white".
Of course, if there are some babies who are indeed out of the budding time frame, a lot more, even beyond 3 to 6 months! It is recommended that parents take their children to the dentist for examination to determine if there is any other reason!