You have a very interesting research topic. I would suggest a qualitative methodology using a research collaborative with both dentists and patients. The patients and dentists should have an existing professional relationship. Consider interviews separately for the patient and dentist and then an interview with both parties. Alternatively, focus group discussions might be useful.
I would like to thank you for your valuable comments. It's an excellent idea to have questionaries and focused group discussions. Mam, if you have a list of questionaries, it would be helpful for us.