Hi Dr Hughes. I have had my Maryland bridge in for about 8 years. The bond tends to fail usually after 2 to 3 years but I always have it refitted. It normally takes about 15 to 20 minutes to refit. This would include removal of any cement from the adjacent teeth and the Maryland bridge wings. It failed again 3 weeks ago and was refitted in just 5 minutes, it failed after 5 days, refitted again and now failed after 3 days. Again only 5 minutes was spent in the chair. Can you tell me what prep is usual in refitting the Maryland? Thank you for your time.