As a dentist, it's necessary for me to make my patients feel a little shame for their poor hygiene habits
I'm shocked, why do you think it is okay to shame them about their hygiene?
Because I want them to feel ashamed so they will pay attention to their bad habit and improve their lifestyle.
You think you are helping your clients with their teeth after shaming them so easily, but it will make them so embarrassed. They might even seek out another dentist because of that. You will loose money over it.
A good dentist should just focus on their job and not worry about fame or money.
I understand that, but you should also respect people and their hygiene and not shame them. Your goal as a dentist should make sure your patients will have good hygiene but you should advise them how to properly do it and not shame them in the process. I hope you do not enjoy shaming your patients and be careful with their feelings moving forward.