I had mixed experience with (a different location of) Gentle Dental. The actual dental work was good but they kept mixing up my appointment and getting my insurance claims wrong and so on. The administrative staff couldn't administer their way out of a paper bag. I hope that the G.D. in Porter Square is better-run. I'd try them out if they took my current insurance.

Alas, Kool Smiles is gone and I do not recommend a Dr. Herbert Dorris, but have you tried the dentist at 30 College Ave.?