Should I have an apicoectomy or implant?

Hi, thanks for the question... Apicoectomy is the ideal option, always try to keep your own tooth, the implant is an option in case of failure, the Apicoectomy has a high percentage of success and help to keep your bone stability. Regards 

Unfortunately without seeing your X rays and knowing the extent of infection it is hard to give you an opinion. Both options are fairly predictable and could work well.I would recommend taking a second opinion and then deciding on future treatment plans.Best of Luck!

It depends on many factors. The gums around the tooth have to be healthy.  The length of the tooth. The size of the lesion, etc.my suggestion for you is to be seen by another specialist for a second consult. 

If the root canal did not worked out , and the tooth is presenting a rejection , dont think that the apiectomy cannot give you the same problem , at the end you will have the same tooth , but shorter,that tooth is almost lost , so do not put good money on a non predictable tooth, you should take it out and place instead a correct big strong implant , that will give you a proper solution , and a more predictable.