Bad breath can b caused due to various reasons. Due to smoking n using tobacco products, dental prob such as decay teeth, unclean tongue, gum infections, reduced saliva n dry mouth, ill fitting dentues, salivary gland probs. Other diseases n infections which also cause bad breath r sinus infections, respiratory tract infections such as bronchitis n pneumonia, liver n kidney probs, diabetes, acid reflux from stomach etc. Get scalling done by dentist. Use proper brushing techniques. Brush , floss n use mouthwash twice daily. Massage ur gums with ur finger tips after brushing. Keep ur tongue clean. Rinse ur mouth well after each meal. Get ur decay teeth filled. Visit ur dentist for dental checkups every 6 months to detect n prevent dental probs. Inspite of these measures if bad breath persists, consult a general physician for further evaluation.

Hi..you need to visit a periodontist for this treatment. You need a minor surgical treatment to cure it or by lasers. Regards

Hi...., I can understand your concern.... Brush your teeth after you eat... Brush your tongue. Your tongue harbors bacteria, so carefully brushing it may help reduce odors.. Regularly get a new toothbrush. Change your toothbrush when it becomes frayed, about every three to four months, and choose a soft-bristled toothbrush..... Schedule regular dental checkups. See your dentist on a regular basis.....