First of all, people have a wrong understanding of sugar. The so-called sugar is fixed, only sucrose is sugar. In fact, the food structure of China people is mainly sugar-carbohydrate (all over rice and flour). The main reason why sugar is prone to dental caries is that it has the highest viscosity, easily reacts with saliva and adheres to the surface of teeth. As a culture medium for bacteria, it will corrode teeth after acid production, and it is useless to brush teeth only twice a day. It usually takes one minute to finish eating.
Your teeth are irregular and easily blocked, which brings favorable factors to food retention, so almost every tooth is stained with ink or decayed.
At present, the problem you are most concerned about is the cavity of the right lower tooth, which is very simple for dentists and can be solved by a routine root canal treatment. Before the operation, you need anesthesia, then grind your teeth, remove the necrotic infectious substances inside the teeth, and then make up, which can ensure painless operation, so don't worry, just treat as soon as possible.
As long as the remaining small holes are filled by the way, root canal treatment is not needed to prevent future pain.
Knowing the cause of dental caries, we can prevent it according to the cause. As long as you rinse your mouth after meals, floss your teeth and see the dentist once every six months, you won't have dental diseases in the future.