What causes bad breath?
Bad breath can be caused by such things as, poor oral hygiene, gum disease, a dry mouth caused by certain disease such as diabetes, certain foods, tobacco products or a medical disorder. When bacteria accumulate due to poor oral hygiene, gum disease or when saliva is lacking, bad breath can result. Saliva is necessary to wash away food particles and bacteria.

Certain medications and disorders can lead to a dry mouth. Sometimes a sinus infection, postnasal drip or other respiratory tract infection can cause bad breath. If bad breath is persistent, contact your dentist to determine whether the cause is of dental origin.