Hi sir....     Th mobility of that cap is due to poor fixing of cap which cause  accumalation of food particles underneath and decaying of the crown portion of your teeth....If that remaining crown portion is sufficient,it is possible to do core build up over that with tooth coloured material and then can cap over the teeth like before..if that remaining tooth material is insufficienet,we can go for post and core which is putting a post inside the root and doing core build up in crown portion and then do cap tha teeth like before..putting post inside the root is to strengthen your remaining tooth ..Another option is you can get your teeth extracted and then can fix fixed artificial teeth in that region .....The treatment option is according to your convienience sir....

Hloo Sir This could be due to In proper seal of crown due to which is must have be good impaction which leads to decay of the tooth and only root must-have be left which can be removed by minor procedure and that is not to harmful You can go it Regards

Because tooth is badly damaged dentist might have suggested total extraction. No side effects with minor surgery as your doctor will take all precautions before, during and after surgery. Go ahead and have replacement also. Replacement can be done in same appointment with implant.

Hello Please post a pic or x ray of the tooth!!

U can go for a post n core..if at least some tooth structure  is there(it is the procedure in which a pin like structure gives support from root on which we can artificially construct tooth )