I broke a tooth while on island a year or so ago and went to a dentist office on the French side. Over the causeway bridge turn left towards the French side. They are located in a shopping plaza at the bottom of the hill on the left just before the round about.

They were very professional. They were recommended to me by a retired dentist from NY who lives in the same complex that I do when on island. He said that he uses them when he has a problem. I would certainly use them again myself, if need be.