Should one get joint crowns or independent crowns? (Photos)

Dental crowns are usually fabricated due to unsupported tooth structure, However there is possibility that the tooth structure is so short, or worn out in which if a crown is placed on that particular tooth it may still come out due to lack of retention. It is at that time that if the adjacent tooth needs a porcelain crown or is crowned the dentist splint 2 teeth together, so the porcelain crowns will not come out, or in certain cases when 2 teeth are loose, or have mobility we splint crowns together!
The pros is that now you have a strong retention, and your crowns will not come out, the cons is that you can not floss, you need bridge threader to clean between, and if you are not careful you will get cavities in the root areas of the tooth which will need redoing the 2 crowns over!
It is always best to have single crowns if possible so patient can maintain the crown by flossing between the teeth!

Hi:
Depending on the amount of tooth structure remaining, individual crowns are always better.  However, if you do not have enough tooth structure it might be better for the crowns to be connected.
Best,
Dr. Maddahi

I would only consider joining crowns together if there is bone loss, mobility or insufficient remaining tooth structure of one or both teeth that would lock them together for support.  If there is no concern with the bone support, mobility or remaining tooth structure then I would not advise adjoining crowns as it can make it more difficult to clean and esthetically not as appealing.