Jayalalitha and NTR acted in many films earlier. But she used to feel nauseate to act with NTR after the lunch hour. NTR used to chew garlic in his lunch or dinner and Jayalitha is strict against to that in her food. Jayalalitha, being a vegetarian and the one who keeps away from garlic, couldn't feel comfortable with garlic flavor from NTR's mouth.
With her complaint and concern, the directors used to avoid combination shots or romantic shots with NTR after lunch hour.
Well, NTR's mouth was not hygienic even in his hey days. He is good connoisseur of food and used to grind something in shot gaps as well. He loves chicken and that used to be a regular food for him. For not maintaining oral hygiene NTR suffered from pyorrhea for sometime and then got his teeth removed completely. It was almost during the time of Dana Veera Soora Karna that NTR emerged with artificial teeth. Yes, he had complete artificial teeth in his mouth. .