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Based on your description, it sounds like you have only a crown prep remaining, in which looks like a short tooth. If this is the case, it is not difficult at all to re-prep the tooth and place another crown. It would be in your best interest to take care of this tooth very soon, because not taking care of it can result in you having to have that short tooth pulled. Good luck and I hope this helps. Follow me if you have more questions.Sarah Thompson, DMD
Certainly short teeth can have a crown, but the retention (the ability of the crown to stay cemented onto the underlying tooth) is greatly influenced by the size and length of the tooth above the gum line.Alternatives include having orthodontics to extrude the tooth, giving more tooth structure above the gum line.Or, crown lengthening, meaning removing some gum and bone around the tooth. This is often a great way to treat back teeth that are short, but front teeth may end up looking too long and possibly esthetically objectionable.In some cases dentists must resort to doing a root canal on the tooth, then placing a post and core to build up some "tooth structure" for the crown to stay adhered to.As a last resort, as happens many times when a tooth breaks off at the gum line, is to get an extraction and dental implant or possibly a bridge.If your crown keeps coming off I'm sure your dentist is as concerned as you are and can recommend the appropriate procedure to enable him/her to make a much more retentive crown for you.Good luck!
If a tooth is clinically short, it may be a candidate for crown lengthening surgery. This procedure removes gum and underlying bone tissue to provide more tooth length for retention of the final crown.
If you have a dark line around your crown, it sounds like you have a metal crown that is coated with porcelain. If this is the case, it is impossible to remove that line without replacing the crown. I would recommend getting a full porcelain emax crown on this tooth to get rid of...
In general, most dentist do not guarantee crowns for more than a few months, so I would not expect your dentist to cover crowns that are 4 years old. However, at my office, we guaranty our crowns will not crack, chip or full off for at least 10 years, but we expect our crowns to last 20-30...
If you were a patient in my office, I'm sure my lab would not mind making the switch. The full crown would likely cost you more because in would contain a lot more gold. I am amazed that you decided to go with a gold inlay/onlay, because most cosmetic dentists place bruxzir (full...