I have an autistic son that is scared of anything new. The first time he went was under sedation and it went well, all things considered. The last 2 times he has been to see the dentist he had his teeth cleaned with no gas or sedation! His hygienist "Jessica" is awesome. She went slow with him and explained everything she was going to do. She even remembered the last cleaning and used it to help remind him of how well it went. These guys are the best!