According to reports, the World Health Organization recently issued a report saying that about 3.5 billion people in the world, that is, nearly half of the total population have oral diseases. In fact, many oral diseases can be prevented.

As part of the organization's series of data reports, the "Global Status of Oral Health Report" provides the first comprehensive description of the oral health challenges and opportunities facing the global population, WHO said.

Oral diseases are the most common non-communicable diseases, the report said. But it affects 3.5 billion people in the world, accounting for about 45% of the global population. This number is about 1 billion more than the total number of cases of the five most important non-communicable diseases.

The five major non-communicable diseases include mental disorders, cardiovascular diseases, diabetes, chronic respiratory diseases, and cancers.

The most common oral diseases were tooth decay, severe gum disease, tooth loss, and oral cancer, the report said. Of these, untreated caries are the most common. It is estimated to affect 2.5 billion people. Severe gum disease is the leading cause of total tooth loss and is estimated to affect about 1 billion people. About 380,000 new cases of oral cancer are diagnosed each year.

In addition, the incidence of oral diseases is on the rise worldwide: in the past 30 years, the number of people suffering from oral diseases worldwide has increased by 1 billion.

"Oral health has long been neglected in global health," but many oral diseases are "preventable," the WHO chief said.

The report shows that three-quarters of people with oral diseases live in low and middle-income countries. High out-of-pocket spending and a lack of highly specialized dental equipment in primary care are the two main reasons for the high prevalence of oral disease, particularly in poorer countries, according to to report.

How to maintain oral health? These 5 small care methods can make your mouth healthier.

Insisting on brushing your teeth not only protects your teeth but also makes your mouth healthier. In this way, a large number of germs can be avoided in the oral cavity, the existence of germs can be eliminated, and the chance of tartar or oral infection will be greatly reduced. Generally, you should brush your teeth at least twice a day. If conditions permit, it is best to brush your teeth after meals.

Some people experience tooth discomfort when eating cold or overheated food. This phenomenon is actually tooth sensitivity. Dental allergy not only makes people feel weak in chewing but also affects normal diet. Therefore, after discovering tooth sensitivity, it is necessary to carry out targeted prevention and treatment in time. Generally, you can choose toothpaste for treating tooth hypersensitivity or carry out targeted treatment under the guidance of professionals.

To better protect your teeth, you must first protect your gums. Compared with teeth, gums are more fragile, and they will become inflamed if you don't pay attention, and sometimes tartar or other diseases will appear. Just brushing your teeth won't protect your gums thoroughly, so floss every once a week for a deeper clean. In addition, special attention should be paid to diet to avoid damage to gums due to improper diet.

Mouth ulcer is a common oral disease, which not only causes special pain but also affects eating, and sometimes even affects speaking. To prevent oral ulcers, the first thing to do is to pay attention to diet. It is best to eat less spicy food. And it is necessary to supplement the body with the various vitamins it needs because vitamin deficiency can also lead to the appearance of oral ulcers.