Stains inside the mouth can be caused due to couple of reasons. It can be intrinsic stains or it can be extrinsic stains. There are two kinds of stains, one form within the tooth, one form the external source. So what happens in a non-smoker is probably more important for people to know, because when we talk about the smokers we understand that it is the smoke stains that can be there inside the mouth. If the person is prone to having more of coffee and more of tea, then the stains that are formed due to the natural dies and these agents are going to stain the teeth or if you are on certain medications, probably that can also discolour your teeth or for example in some people, they have intrinsic stains, that is during the formation of the tooth, if the patient iust subjected to an antibiotic or a certain medication then there can be a certain stain without smoking or without any agent at all so the patient may be wondering why he has stains in the teeth although he is brushing twice daily, he is flossing and he is maintaining, but still he has stains inside the teeth. Or if you are having iron supplements syrups, it can also stain your teeth, but these things can be avoided by rinsing after drinking cup of tea or coffee. Other cases if the patient has got esthetic filings like composite fillings, the composite fillings can also be stained due to colouring food agents like kababs, coloured foods or candy which is coloured with artificial colouring agents especially in patients who consider stains to be formed only because of smoking so stains can be formed even without smoking, but with smoking it is smoke stains and the one without smoking, it is because of multiple reasons.
