I have a broken bicuspid at the gum line. What treatment would you recommend?

If your tooth is truly broken all the way down to the gum line, it is very difficult to restore that tooth with any long lasting results. That could be a lot of money that you lose very quickly. Two other options would be to remove the tooth and have an implant placed with a porcelain crown to restore the implant. The second choice is to do a fixed bridge which involves using the adjacent teeth on each side as anchors to hold a porcelain tooth in the place of the extracted canine. I would definitely recommend the implant first which allows the adjacent teeth to be left alone with no procedures on them. Ask your dentist for a consultation and information on an implant. Good luck.