4 units bridge (11-14) broke 3 times??? now considering implant on # 12 and # 13. last one made of zirconia. can we re use the crowns on #11 an # 14.

What to do?: That's a question that cannot be properly answered over the internet sight unseen and without the availability of x-rays. First, one must question why you've had such problems? Secondly, crowns on natural teeth cannot be combined with crowns on implant teeth as a combined unit. I suggest you make sure you are in the hands of a competent restorative dentist and discuss options. Get 2nd opinion.

Possibly: It depends on how much they were damaged when the bridge broke and also will depend on where the implants need to be placed.

See a Prosthodontist: You may need the expertise of a Prosthodontist for proper diagnosis and treatment plan.

Possibly: The only one who will know whether the fit and finish is acceptable is your Dentist.