Shao Dongsheng, Department of Prosthetics, Beijing Stomatological Hospital: Whether you want a small broken bone depends on how bad you are. If your gum is not good, theoretically you must remove a little bone. But even if you remove a little bone, don't be nervous. This is a small operation.
Patient: Thank you for your reply. I feel that although the tooth defect is large, the main reason is that the cavity inside is large and hollowed out, but there are tooth tissues above the gums all around, but it is not too thick or too high. Does this mean that what you said is not as bad as under the gums? Thank you very much Shao Dongsheng, Department of Prosthodontics, Beijing Stomatological Hospital: It depends on the thickness of your residual tooth tissue. If the tooth is still above the gum after the preparation of the restorer (grinding off the tooth tissue), there is no need to do crown lengthening surgery (removing a little bone), otherwise it is still necessary to do crown lengthening surgery. Therefore, since your tooth tissue is now on the gum, it is not possible to rule out the need for crown lengthening surgery, but it may not be necessary.
Shao Dongsheng, Department of Prosthodontics, Beijing Stomatological Hospital
I sincerely wish you a speedy recovery, good health, good teeth, good appetite and a beautiful smile.
Patient: Continue to consult a good doctor:) I wanted to reopen the topic, but it seems that I can't, so I have to follow this question. I have carefully read your published article and got a preliminary but comprehensive understanding of dental restoration. In your article, it is mentioned that the survival rate of porcelain crown of posterior teeth after ten years of use is 70% to 80% (as if I remember this ratio), so I am curious about what to do after porcelain crown of posterior teeth is used for a long time and loses its function. Do you want to take it off and make a new crown? I also learned from your article that both crown removal and post removal have the risk of failure, that is, the root may be damaged beyond repair. So can it be understood that the result of full crown restoration is to remove the crown ten years later and then pile it up to make the crown or pull out both? In this case, if you don't do full crown restoration, just do root filling, plus careful protection (such as not eating hard objects, etc. ), is it possible that the service life of roots will be longer than that of crowns? Some don't understand, I look forward to your answer ~ ~
Shao Dongsheng, Department of Prosthodontics, Beijing Stomatological Hospital
A tooth with a filled root is like a lifeless tree, which can't bear too much pressure and is easy to crack. After root filling, if the crown is not restored, the teeth will easily split, and the average life span will definitely be much less than 10 years. After root filling, the life of a crown does not depend on whether it is a crown or not, but on the strength of your tooth itself. In other words, after filling a tooth, whether it is a crown or not, it may be bad.