I had worked in healthcare for many years and I would suggest you make a comment to your regular dentist. Speak to your usual provider privately in person or on the phone. State that you are happy with his care. Using the term your child used and just restate what was said and you can also state you don't choose to speak like that in your home. Your dentist may not be aware that this occurred. I kept the Medical Director of the long-term care facility I worked at up on issues like this as it can impact their license if something were to happen. My concern would be that if this surgeon chosen to lower their standards in this manner where else might they make similar choices. Professionals such as physicians, dentists, counselors, et al, are licensed for reasons and they should remain professional. You have a specific standard for your family and why should it be lowered?