Hloo Mam For good diagnosis your need to see dentist near by you there can be stains and calculus deposite which can be done by cleaning and if there is yellowish coloration you can go for bleaching also Regards

consult a dentist and check whether you have calculus deposits in your teeth,if so you have to clean your teeth and if you have any discoloration you can go for bleaching or veneering.First we have to see your clinical photograph then only we can suggest you the exact treatment option.

You visit near by dentist They will do scaling and polishing if the yellowish colour present even after scaling then you can get bleaching done that will add brightness to your teeth If in case your having mild fluorosis or other stain then you need laminates or veneers

Poor oral hygiene and inadequate brushing and flossing , stain producing substance like coffee ,tea and tobacco cause tooth discoloration.

It happens because of consumption of beverages or any lifestyle habits. Please consult a dentist as this will require a professional cleaning called Scaling and polishing treatment I hope it helps you Keep smiling Regards Dr Akshada Gupta The Dental Clinic, Charni Road Mumbai

Mam this might be due to lot of reasons your oral hygiene habits and your food habits.usually the yellow stains goes off with normal scaling with your dentist,but if the stains are still there aftr scaling you have  so many other options lik teeth whitening and veneers.which will give you better aesthetic results but this can be done only dependibng on your condition.