What are some methods to eliminate bad breath?

Oct 18, 2025 Source: Cainiu Health
Dr. Liu Chao
Introduction
In general, bad breath can be prevented by brushing teeth morning and evening, using dental floss to clean between teeth, rinsing the mouth after meals, regularly cleaning the tongue coating, and improving dietary habits. In addition, it is important to develop the habit of regular professional teeth cleaning to remove tartar and stubborn dental plaque. If bad breath persists, it may be related to oral diseases or digestive system problems.

Generally, bad breath can be prevented by consistently brushing teeth in the morning and evening, using dental floss to clean between teeth, rinsing the mouth after meals, regularly cleaning the tongue coating, improving dietary habits, and other methods. The details are as follows:

1. Brush teeth morning and evening

Food residues left in the mouth are broken down by bacteria, producing unpleasant odors. Thoroughly brushing teeth twice daily—morning and night—effectively removes food particles and dental plaque. It is important to use proper brushing techniques, ensuring all inner, outer, and chewing surfaces of each tooth are cleaned. Each brushing session should last at least two minutes to reduce odor at its source.

2. Use dental floss to clean between teeth

Toothbrushes often cannot reach the tight spaces between teeth, allowing food debris and soft deposits to remain. Over time, this buildup promotes bacterial growth that causes bad breath. Using dental floss daily precisely removes trapped debris from between teeth, preventing bacterial proliferation and helping alleviate bad breath.

3. Rinse mouth after meals

After eating, a large amount of food residue remains in the mouth. Rinsing promptly with warm water or a mild salt solution quickly clears surface food particles, reducing opportunities for bacterial decomposition, temporarily relieving bad breath, and keeping the mouth feeling fresh.

4. Regularly clean the tongue coating

The surface of the tongue accumulates large amounts of bacteria, food debris, and metabolic waste, forming a layer of coating that is one of the major causes of bad breath. Regularly using a tongue scraper or tongue brush each week gently removes this buildup, reduces bacterial growth, and improves oral odor.

5. Improve diet

Consuming strong-smelling foods such as garlic and onions over a long period leads to volatile compounds entering the bloodstream and being exhaled, causing bad breath. In addition, high-sugar foods promote the growth of oral bacteria. Reducing intake of pungent and sugary foods while increasing consumption of fiber-rich vegetables and fruits stimulates saliva production and helps naturally cleanse the mouth.

In addition, it is advisable to develop a habit of regular professional teeth cleaning to remove tartar and stubborn plaque. If bad breath persists, it may indicate underlying oral diseases or digestive system issues, and individuals are advised to seek timely medical evaluation and treatment.