The correct answer is: Acid
Tooth decay can happen when foods containing carbohydrates (sugars and starches) are left on teeth. Bacteria in your mouth digest these foods and turns them into acids. The bacteria, acid, food debris, and saliva combine to form plaque, which clings to the teeth. The acids in plaque dissolve the enamel surface of the teeth, creating holes in the teeth called cavities, or dental caries

The correct answer is : Bad breath
Bad breath, medically called halitosis, can result from poor dental hygiene and could be a sign of other health problems. Bad breath can also be made worse by the types of foods you eat and other unhealthy lifestyle habits.

The correct answer is : True
Some studies have linked common oral problems to illnesses, including heart disease, stroke, diabetes, premature birth, osteoporosis, and even Alzheimer's disease. Dental health is important for preserving your overall health

The correct answer is : 2 - 3 months
The American Dental Association recommends throwing out your toothbrush every two to three months. If the bristles become frayed, you're sick, or you have a weak immune system, throw it out even more often

The correct answer is : False
Although tooth loss is common, it's not an inevitable part of growing old.. Teeth do not die a natural death, we are the ones responsible for killing them through disease or even trauma