What are tetracycline teeth? What causes tetracycline teeth? What causes tetracycline teeth to turn white?
Tetracycline teeth are affected by drug factors in the development stage of teeth, enamel irreversible damage, which is due to enamel loss and premature tooth mineralization phenomenon.
During the development and mineralization of teeth, tetracycline group drugs can be combined into the tooth tissue to stain teeth. Because enamel and dentin are formed on the opposite side of the same basement membrane, the same dose can form yellow layer in both tissues, but the deposition in dentin is 4 times higher than that in enamel, and there is only diffuse non banded pigment in enamel. This is due to the fact that dentin apatite crystal is small and its total surface area is larger than that of enamel apatite crystal, so the amount of tetracycline absorbed by dentin is much more than that of enamel.
Because the yellow layer is wavy and cap like, which is similar to the shape of teeth, the staining caused by a single dose can be seen on most surfaces of a tooth, while the repeated dose in long space does not appear the horizontal coloring at intervals. At the same time of tooth coloring, there are bone tissue coloring, but the latter can be gradually removed with the physiological and metabolic activities of bone tissue; however, tooth coloring is permanent. In addition, tetracycline can also cause primary teeth coloring through the placenta.
The main causes of tetracycline stained teeth were as follows
1. Because enamel and dentin are formed on the opposite side of the same basement membrane, the same dose can form yellow layer in both tissues.
2. However, the deposition in dentin was 4 times higher than that in enamel, and there was only diffuse non banded pigment in enamel. This is due to the fact that dentin apatite crystal is small and its total surface area is larger than that of enamel apatite crystal, so the amount of tetracycline absorbed by dentin is much more than that of enamel.
3. Because the yellow layer is wavy and cap like, which is roughly similar to the shape of teeth, the staining caused by a single dose can be seen on most surfaces of a tooth, while the repeated dose in long space does not appear the horizontal coloring at intervals. At the same time of tooth coloring, there are bone tissue coloring, but the latter can be gradually removed with the physiological and metabolic activities of bone tissue.
However, the coloring of teeth is permanent. In addition, tetracycline can also cause primary teeth coloring through the placenta.