Why the elderly will suffer from dental caries

We all know that old teeth is not good, like our grandparents often do not eat some of the more hard food or more sour things, there are many old teeth are gone, by wearing dentures to eat, mostly due to the elderly Dental caries lead to teeth can not be normal chewing food, is not the proportion of elderly patients with dental caries? Why old age suffering from dental caries?
1. Saliva secretion reasons:

Elderly due to salivary gland function decline. Alveolar bone and gingival atrophy, increased interdental space, food impaction increased, the normal physiological environment of the mouth was gradually destroyed. Oral self-purification effect decreased. Salivary gland secretion of lysozyme content is also low, oral bactericidal ability decreased, so the caries can be a large number of elderly dental caries to breed, resulting in increased prevalence of dental caries in the elderly.
2. Dietary reasons:
Old age, due to various causes of chewing function decline, digestive function decline, forcing the elderly in the diet with a lot of refined flour and sugar, and reduce the intake of fibrous food: research confirmed that sucrose can accelerate oral Streptococcus mutans Of the reproduction, while the role of other sugar is very small. High-sugar diet has obvious cariousness: refined sugar in the oral bacteria involved in the fermentation products, under the appropriate conditions (temperature, humidity, stay in a certain location), for the tooth hard tissue gradually play decalcified dissolved The role of, causing dental caries.
3. Texture itself Cause:
The body of the hard tissue of the body's physical metabolism decreased, the hard tissue becomes fragile and easy to break, acid and anti-caries ability weakened, it is often the majority of teeth suffering from caries, the development of faster. Bad teeth formed by the crown caries stove, in addition to containing a large number of cariogenic bacteria, there are still other types of pathogens, often cause senile pharyngitis, upper respiratory tract infection, and even pneumonia.
4. Body reasons:
Human growth and development period, if to ensure a rich and reasonable nutrition, it will form a healthy tooth jaw and normal teeth jaw anatomical morphology, into the old age and old age anti-caries ability will remain at a certain level, Occurrence of caries. And suffering from chronic wasting disease in the elderly, reduce the immune function of the body, so that the incidence of dental caries greatly increased, such as tuberculosis, diabetes.
The above is the cause of old age suffering from dental caries, with age, the immune system will gradually decline, so the chance of illness will increase, to remind the elderly must develop good eating habits and oral hygiene habits, eat Light food, have good teeth, in order to have a better life.