Antibodies to oral streptococci can be detected in the saliva from an early age, although the pattern of response to various antigens shows great variability. Despite numerous studies, however, no conclusive evidence was found that this immune response controls developing microflora. This remains one of the great puzzles, and not only for the oral cavity, but also for other constantly colonized mucous sites-as a balance between symbiotic bacteria and host response is maintained in equilibrium? On the other hand, at present, there is abundant evidence that strongly expanded response induced by immunization or passive use of antibodies can affect their ability to colonize and/or cause disease.
One of the problems that plague investigation contribution oral streptococci for plaque formation was that decisions taxonomic relationship between different types observed. Indeed, many routine diagnostic laboratories continue to lump all oral streptococci together under a descriptive term is? viridans streptococci`, which refers to the planting of reaction, or hemolysis produced on blood agar. This classification is clearly limited, as not all are oral streptococci-hemolytic, and hemolytic species such as S. pneumoniae are not normal inhabitants of the oral cavity. More importantly, there is a vast heterogeneity physiological properties within the group, so we could foresee various properties of virulence.
A systematic review of
water fluoridation was commissioned chief sanitary doctor Ministry of health for England to the?lead from there until the date expert scientific review of fluorine and health".
Forest plot bones studies have shown that there is no connection between water fluoridation and the prevalence of fractures .THE cancer research results were mixed, with minor variations, on both sides of no effect. Individual issues were discussed bone cancer and thyroid cancer, where again there is no clear pattern of Association was to be seen. In General, studies the presented evidence, no connection was found between the water fluoridation and the mortality rate of any cancer, or bone, or thyroid cancer in particular.
Fluorosis-underdevelopment or hypomaturation tooth enamel and dentin, produced chronic ingestion of large amounts of fluoride in the period when the teeth are developing. The main cause of fluorosis is the consumption of water with high content of fluorine, newborn and child during the first six years of life. Although both primary and permanent teeth can be affected by fluorosis, and under uniform conditions, the presence of fluoride fluorosis, as a rule, more in permanent teeth than in primary teeth. This discrepancy may be caused by the fact that a large part of mineralization of milk teeth occurs before birth, the placenta is a barrier to the transfer of high concentrations in the plasma of fluoride from a pregnant mother to her developing fetus, controlling, thus, to some extent, delivery of fluoride in developing milk bite. Another reason may be that in the period of formation of enamel for milk teeth shorter than for permanent teeth, and that the milk teeth enamel is thinner than in permanent teeth.
- In the presence of adequate exposure to fluoride, consumption of free Sugars should be limited to 15-20 kg per person per year (equivalent 40-55 g/day). In the absence of fluorine, consumption of free Sugars should be lower than 15 kg/day (<40 g/day). These values equate to 6-10% of energy consumption. The frequency of use of products containing free Sugars should be limited to a maximum of four times a day.
- Potential financial consequence of failure to prevent cavities should be highlighted, especially to governments of countries that currently have low levels of disease, but are powered on (the adoption of a Pro-Western diet).
In Vipeholm studies mentioned earlier, the group receives chocolate developed relatively fewer carious lesions than the group with the same amount of sugar at such frequencies. This led to the suggestion that chocolate contained protective factors. Animal studies have also shown that cocoa can have a protective effect. In 1986 cocoa factor was derived from chocolate and proved effective in vitro. Recent studies have shown that theobromide in chocolate " will be able to increase the size of the crystal in the enamel, thereby increasing the resistance to acids demineralization. Numerous animal studies and experimental studies have shown that the cheese anticariogenic. Plaque pH studies have shown that consumption of cheese these sweet snacks practically cancels the usual drop in pH that is associated with Sugars consumption. Cheese stimulates the secretion of salivary and plaque increases concentration of calcium. The concentration of calcium in the plaque strongly affects the balance between de - and re-mineralization of enamel. In experimental studies prepared, cheese containing food has also been shown that the increase in plaque concentration of calcium in human volunteers.
Modern dentistry knows numerous ways to restore the original look of your teeth or to correct defects of teeth. Dentists are like artists they strive to make the world (and your precious smile) more attractive and harmonious. One of the most popular methods of restoration of teeth nowadays is an artistic restoration of teeth. This method is used when it is necessary to correct some defects of the shape of the tooth, restore the original color of the tooth, or correct any other defects of teeth.
One of the childs encyclopedias says that the material our teeth are made of is very durable and can stand immense loads. This material is really very durable because our teeth have to chew and grind all kinds of food and it is their everyday duty. Mind that this food is not always watery and soft. However, even the most durable thing can break, even the most solid material will wear out. In fact, it is very easy to break a tooth. Just imagine that there are people who like to peel nuts from nutshells with the help of their teeth.
There were times when there were no dental clinics with numerous effective methods of treatment of dental diseases, with instruments and materials used to treat and restore teeth. There were times when people could rely only on natural resources to treat dental diseases. Still, there were some methods to reduce toothache. You must know that toothache can be really hard to stand. That is why people tried to find some methods to reduce this pain. Even though nowadays there are many effective pain relievers folk remedies can be also helpful in case you have no pills with you or cannot see your dentist immediately.
