Patient: I have tetracycline teeth, about ten years ago I had two big teeth filled due to tooth decay, the inner side of the penultimate big tooth above, both sides were drilled and filled with amalgam material at the same time, now I feel soreness, air permeability, obvious hot and cold sensation, etc., which should be caused by the loss of small pieces of enamel near the teeth, and I think it is time to fill them again…. I have been trying to eat less hard things for decades, but I still can’t avoid enamel loss or hidden tooth cracks. I would like to ask the experts: 1, what kind of material is stronger, more durable and safer to use for fillings, 2, what will happen to tetracycline teeth in the future if I don’t do porcelain or something? Because I think it is better to do their own teeth, porcelain will wear their own teeth small, and then put on the crown, should be a great loss of teeth, so I have not wanted to get the intention, but also want to know if not, what will develop in the future? Thank you for taking time out of your busy schedule to reply, thank you very much! Unlike amalgam, which is a physical inlay, resin is chemically bonded, so it does not require special cavity preparation to cut off more tooth tissue and is recommended. If you pay attention to basic brushing habits, strengthen self-care and regular oral examination, tetracycline teeth will not break down prematurely due to tooth decay or periodontitis, but if the wear caused by normal use is so great that the pulp is worn down, you may be older by then. At that time, there are many treatment and restoration methods to remove the pulp and preserve the tooth, and high inlays can be done, but of course, the less the tooth is worn out, the better. I also think it is too expensive to do porcelain teeth simply for aesthetic reasons. Of course, according to the specific situation to be analyzed. Patient: Thank you very much for your detailed reply, moving …… Good luck with your work and good health! Li Yanfeng: Good luck with dental health.