Brief introduction of dental caries:
Dental caries, also known as teeth, is a disease that leads to the progressive destruction of hard tissues of teeth under the action of various factors such as bacterial infection. If not treated in time, it may cause complications such as pulpitis, periapical periodontitis and even clavicular inflammation.
Oral diseases can occur in people of any age after deciduous teeth erupt, but the incidence of dental caries is different in different age groups. The incidence of sugar in milk and teeth of children aged 5-8 will reach a peak; Old people are prone to root caries due to heel atrophy and root exposure, and the caries rate has obviously increased to another peak.
incidence rate
China is a country with high incidence of oral diseases. The fourth national oral health epidemiological survey released in 20 17 showed that the caries rate of permanent teeth in 12-year-old children was 38.5%, and that of deciduous teeth in 5-year-old children was 7 1.9%.
Incidence trend
According to the third national oral health epidemiological survey published in 2005 and the fourth national oral health epidemiological data published in 20 17, the prevalence of dental caries in China has been on the rise in recent ten years.
Dental caries susceptible population and its etiology
susceptible population
1, people with bad eating habits, such as sweets, drinks and other foods with high sugar content;
2, poor oral hygiene, such as no brushing habits or poor persistence;
3. Those with poor caries resistance, such as less saliva secretion and irregular teeth arrangement.
Etiology of dental caries
gemmule
Bacteria are the main factor of dental caries, and there are many kinds of bacteria in the mouth.
Common cariogenic bacteria are Streptococcus mutans, Lactobacillus and Actinomycetes. Streptococcus mutans and actinomycetes have strong acid-producing ability, which can cause local demineralization of dentin and lead to dental caries. Streptococcus mutans can cause smooth dental caries, actinomycetes can cause pit and fissure caries, and lactobacillus can accelerate the development of diabetes.
prescribe a diet
Eating foods with high sugar content (especially sucrose), sugar will stay in the hidden parts of teeth, and organic acids produced by bacteria using sugar metabolism will cause enamel demineralization, which will lead to dental caries.
host
There are two main factors: teeth and saliva. Irregular, crowded or overlapping teeth increase the risk of dental caries. Saliva is the external environment of teeth, and the changes of its quality and quantity, antibacterial system and buffering capacity are closely related to the occurrence and development of dental caries.
time
The development of dental caries is a slow cherry blossom process, and the whole process from plaque formation to dentin demineralization to dental caries takes some time.