Cover screw visible after two weeks. Advice?

You will need to extract the broken tooth # 15 as it can be a potential source of infection or if there is decay it can potentially spread to adjacent teeth. Your choice of not doing an implant is acceptable; however, be aware that in some individuals and in some instances the opposing bottom...

A previous trauma might have led to this condition when the root is getting resorbed. Looking at the present condition, it would grow loose eventually. It would be better if you get it extracted and replaced with a dental implant so that it is a permanent solution for the issue.

Hello, if your doctor determinate by xrays and physical evaluation that you cannot do root canal, post and crown is because you don’t have enough dental structure then do it can be a risk to have a fracture. 

It is okay to go without; however, in the future you may notice #18 (the tooth that is directly above it) shifting down. Teeth like contact and if #18 doesn’t have anything to bite against it may start coming down. With our younger patients we always encourage the implant

It not a necessity to have a bone graft for every implant, every case is subjective to the patient. Why did the implant fail is the real question? Implants are still vulnerable to infections, i.e, periodontal infection. Did you have sufficient bone to begin with? Meaning, at...

Hi From your description the best route to continue is to remove the tooth, graft the area and replace with future dental implant. Good luck Dr. Erez Nosrati La Jolla, CA