In fact, these warranty periods are stipulated by the hospital itself, and there are no national laws. Hospital regulations are in place because hospitals have the ability to withstand these financial pressures. If filled with ordinary materials, they will definitely not fall off easily, but the doctor will tell you not to eat anything too hard, otherwise the materials will collapse, crack, and even your own teeth will collapse.

There are too many factors. Unless we don’t need to eat, it will last a lifetime. But we need to use our teeth to eat. Children’s deciduous teeth can be filled with cheaper ones

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