Q. Hi Dr Riten I hope you can help me. I have had a six bridge which includes crowns in the top front of my mouth for the last 25 yrs. recently there have been gaps between the tooth and gum on one or 2 teeth. My dentist has filled the gaps, but says that i need a new bridge as it is leaking. Can he not just take this bridge out and re cement it in again. I’m very confused and think i need a second opinion and the cost is working out quiet expensive. I look forward to hearing from you. ,