Treating the local causes as well as systemic reasons is very crucial to treat bad breath.
Teeth cleaning or scaling is the first measure
Filling decayed teeth, treated infected teeth with RCT reduce food accumulation and bad odor
Treating periodontal diseases
Correcting ill-fitting dentures, faulty fillings or prostheses.
Addressing systemic health disorders which were mentioned above can significantly reduce halitosis
Replacing medications inducing bad breath with alternate medicines can also prove helpful.
Cleaning tongue is one more important measure necessary in keeping mouth fresh.
Quitting habits like smoking, chewing tobacco or gutkha
Dry mouth can be addressed with saliva-inducing chewing gums or medication to improve saliva production.
Usage of medicated toothpaste as suggested by the dental surgeon.
Mouthwash can address the problem for short periods. Water-based mouthwash should be preferred over alcohol based ones.
A regular visit to the dentist for a thorough dental examination.