Question 2: How is dental caries formed? Dental caries, commonly known as insect tooth decay, is a chronic disease of hard tissue of teeth. Under the action of many factors, enamel and dentin are damaged and defective, and gradually develop into cavities. Dental caries is the most common dental disease among teenagers. According to the survey, the average prevalence rate of children in primary and secondary schools and kindergartens in China is about 50%. The cause of dental caries is the result of many internal and external factors. In recent years, with the development of medicine, the cause of dental caries has been further explained. It is considered that dental caries is a dental disease caused by the coexistence of bacteria, sugar food and dental caries resistance. The role of oral bacteria. Streptococcus mutans and Lactobacillus in the oral cavity multiply and ferment on the food residue left in the oral cavity to produce acid, which makes teeth corrode, soften and decalcify. After decalcification, dental cavities gradually formed. Sugar is a necessary condition for dental caries. Sugar plays a decisive role in the occurrence of dental caries. In particular, foods containing sucrose will increase dental plaque and streptococcus cariogenes will increase greatly. The body's resistance has obvious influence on the occurrence of dental caries. The resistance of the body includes the ability of teeth and the whole body to resist caries, and the internal factors of the body can affect the occurrence of dental caries. Especially when protein, minerals and vitamins are deficient, it will promote the occurrence of dental caries. Tooth shape, structure, location, oral hygiene, quantity and nature of saliva, nutrition, endocrine, genetic factors, systemic diseases, immune status, etc. , all have an impact on the occurrence and development of dental caries. Dental caries easily occur in the pit and fissure on the occlusal surface of teeth, the adjacent surface between two teeth of dislocated teeth, uneven dentition and overlapping teeth. The occurrence of dental caries is related to systemic diseases such as sticky saliva, poor oral hygiene, endocrine disorders, malnutrition, tuberculosis and the lack of trace elements. After the occurrence of dental caries, there was no inappropriate feeling at first, but there was a small hole in the tooth. When dental caries gradually develop and deepen, close to the sensory nerve endings of dental pulp, eating cold, hot, sour and sweet food will hurt. In severe cases, it can cause pulpitis or periodontitis, causing severe pain. Generally speaking, it has the following hazards: 1. When dental caries destroy enamel and invade dentin, patients will feel toothache when they encounter cold, hot, sweet and sour. Clinical examination shows that the teeth have holes and are dark brown. If not treated at this stage, the cavity will gradually deepen, involving the pulp and causing pulpitis. At this time, spontaneous pain can occur, and it can also cause ipsilateral headache, making patients fidgety. If left untreated, inflammation will continue to develop in the direction of root, causing periapical periodontitis, root swelling and pain, tooth loosening, biting pain and periodontal pus. In severe cases, there will be facial edema, fever and limited mouth. Bacteria may even enter the blood and cause bacteremia, which may be life-threatening. 2. If not treated in time, deciduous tooth caries can gradually develop into severe periapical periodontitis, leading to tooth dysplasia. If deciduous teeth fall off prematurely due to dental caries, it will not only affect the eruption of permanent teeth as scheduled, but also lead to the disorder of permanent teeth arrangement, resulting in dentofacial deformity. The early loss of permanent teeth due to caries and a large number of missing teeth will affect the chewing of food, which will inevitably increase the gastrointestinal burden and cause gastrointestinal diseases. 1. Severe dental caries leads to soft tissue around residual crowns and roots, causing ulcer erosion and even canceration. It may also become the focus and base camp of bacteria. 2. Bacterial toxins can reach all parts of the body through blood flow. Some data show that dental caries can cause iridocyclitis, rheumatoid arthritis, nephritis, rheumatic heart disease or viral myocarditis, systemic pain and so on. So, what should we pay attention to in preventing dental caries? First of all, pay attention to oral hygiene, learn to brush your teeth correctly, and develop the good habit of brushing your teeth in the morning and evening and gargling after meals. You can brush your teeth with a healthy toothbrush and fluoride toothpaste. Trace element fluorine can resist the corrosion of teeth by acid. Secondly, don't eat too much sugar, but also pay attention to nutritional supplements and physical exercise to enhance the ability to resist germs. Finally, remember to have regular oral examinations on weekdays, so as to find dental caries in time and carry out remedial treatment as soon as possible. The correct method is: the toothbrush should be brushed vertically along the long axis of the teeth, that is, from top to bottom when brushing the upper teeth and from bottom to top when brushing the lower teeth. When brushing the occlusal surface of the upper and lower teeth, the toothbrush bristles should be pressed against the teeth, brushed back and forth, and then brushed inside after brushing the outside.
Question 3: How is dental caries formed? Commonly known as tooth decay and dental caries, it is a bacterial disease, which can cause secondary pulpitis, periapical periodontitis and even alveolar bone and jaw inflammation. If it is not treated in time, the lesion will continue to develop and form cavities, and finally the crown will be completely destroyed and disappear, and the final result of its development is tooth loss. Dental caries are characterized by high incidence and wide distribution. It is the main common disease of oral cavity and one of the most common diseases of human beings. The World Health Organization ranks it as one of the three major prevention and treatment diseases of human beings along with tumor and cardiovascular diseases.
catalogue
1 etiology
2 Clinical manifestations
3 check
4 Differential diagnosis
5 treatment
Six kinds of dangers
7 prevention
1 etiology
At present, the accepted theory of caries etiology is a four-factor theory, which mainly includes bacteria, oral environment, host (that is, parasites include parasites, viruses and other organisms parasitic on them) and time. Its basic point is that cariogenic food sugars (especially sucrose and refined carbohydrates) are closely attached to the tooth surface, and the acquired membrane is formed by saliva protein. This kind of acquired film can not only firmly adhere to the tooth surface, but also have enough time to produce acid in the deep layer of dental plaque at a suitable temperature. The acid will attack the tooth, demineralize the tooth, and then destroy the organic matter and produce tooth cavities.
1. bacteria
It is a necessary condition for dental caries. It is generally believed that there are two types of bacteria causing dental caries. One is acid-producing bacteria, mainly streptococcus mutans, actinomycetes and lactobacillus, which can decompose carbohydrates to produce acid, leading to demineralization of inorganic substances in teeth. The other is Gram-positive cocci, which can destroy organic matter and make teeth form cavities after long-term action.
2. Oral environment
Oral cavity is the external environment of teeth, which is closely related to the occurrence of dental caries, in which food and saliva play a leading role.
(1) The food is mainly carbohydrate, which is not only related to the formation of dental plaque matrix, but also the main energy source of bacteria in dental plaque. Bacteria can metabolize carbohydrates (especially sucrose) to produce acids and synthesize extracellular polysaccharides and intracellular polysaccharides. The produced organic acids are beneficial to the growth of acid-producing bacteria and acid-resistant bacteria, and also beneficial to the demineralization of hard tissues of teeth. Polysaccharide can promote the adhesion and accumulation of bacteria on the tooth surface. When exogenous sugar is deficient,
(2) Under normal circumstances, saliva has the following functions: ① mechanical cleaning; ② Bacteriostasis; ③ Anti-acid effect; ④ Anti-dissolution.
When the quantity and quality of saliva change, it can affect the caries rate. Clinically, the caries rate of patients with dry mouth or increased saliva secretion increased significantly. Patients with maxillofacial radiotherapy may have multiple caries due to the destruction of salivary glands; On the other hand, when the lactic acid content in saliva increases, it is also beneficial to the occurrence of dental caries.
Step 3 host
Teeth are the target organs in the process of dental caries, and the shape, mineralization and tissue structure of teeth are directly related to the occurrence of dental caries.
4. Time
The occurrence of dental caries takes a long time, and it usually takes 1.5 ~ 2 years from the initial caries to the clinical formation of dental cavities. Therefore, even if cariogenic bacteria, suitable environment and susceptible host coexist, dental caries will not occur immediately, and only if the above three factors exist for a long time can dental caries occur.
2 Clinical manifestations
1. Dental caries prone parts
The prone position of dental caries is closely related to whether food is easy to stay. The most common dental caries sites include pit and fissure, abutment surface and neck.
2. Teeth prone to dental caries
The distribution of dental caries is basically symmetrical, with more mandibular teeth than maxillary teeth, more posterior teeth than anterior teeth, and the dental caries rate of mandibular anterior teeth is the lowest.
3. Degree of dental caries
Clinically, we can see the changes in the color, shape and quality of dental caries, mainly qualitative change, and the changes in color and shape are the result of qualitative change. Clinically, it is often divided into three stages according to the degree of caries: superficial caries, moderate caries and deep caries, which are as follows:
(1) Shallow caries, also known as enamel caries, is confined to enamel. Chalk spots caused by demineralization appeared on the smooth surface in the early stage, and then turned yellow-brown due to coloring. Pits and cracks indicate that the ink is soaked and dispersed. Generally, there is no obvious dental caries, but there is a rough feeling when exploring. In the later stage, shallow holes confined to enamel appeared, with no conscious symptoms and no response during exploration.
(2) The middle caries have reached the superficial dentin, and there are obvious cavities in clinical examination, which can cause pain and may have painful reactions to the outside world (such as cold, hot, sweet, sour and food embedding). When the source of * * * is removed, the pain disappears immediately and there is no spontaneous pain.
(3) The deep caries have reached the deep dentin, which is generally characterized by large and deep cavities, or small and deep cavities with extensive damage, and the external caries are serious, but the pain can be relieved immediately after the source of * * * is removed, and there is no spontaneous pain.
4. Types of dental caries lesions
(1) Chronic caries generally progresses slowly, especially in adults, and most of them are chronic.
(2) Acute caries is more common in children, teenagers, pregnant women or people with poor health, with short course of treatment and rapid progress, and soft caries is more common. & gt
Question 4: How is tooth decay formed? In daily life, most people think that tooth decay is caused by eating too much sugar. In fact, this is only part of the reason, and the cause of tooth decay is very complicated. After long-term research, the medical profession believes that tooth decay is roughly the result of the interaction of four pathogenic factors. They are bacteria, food, teeth and time. To maintain good oral hygiene, you can brush your teeth with tooth powder. Xinglinji Sheng Hui Chongfangya can achieve the effect of preventing insects and moths.
Question 5: the process of tooth decay, how is tooth decay formed? The pathological changes of dental caries are from shallow to deep, from small to large, from asymptomatic to unbearable pain, and gradually develop and aggravate. decayed tooth
When it develops to destroy the surface dentin, irregular black holes will appear on the tooth surface. Because there are nerves in dentinal tubules.
Peripheral, encounter cold, hot, sweet and sour * *, there will be a feeling of soreness and pain. If the damage extends to dentin.
Deep teeth close to the pulp cavity have formed deep caries, because the cavity is close to the pulp cavity and bacteria and bacteria are in the cavity.
Toxins easily infect dental pulp along dentinal tubules, leading to pulpitis and severe pain. At this time, not only encounter
Cold and hot pain. Even if there is no * * *, it is spontaneous pain, even involving the face and head, at night.
The pain is getting worse. If the pulp is suppurated, there will be persistent jumping pain, which will make the patient sleepless and restless at night.
People often say that "toothache is not a disease, but it hurts terribly" is a typical description of the symptoms of pulpitis.
To enhance the anti-caries ability of teeth, we can change the structure of enamel surface through pure Chinese herbal medicine tooth powder and Sheng Hui Worm Tooth Prescription, so as to enhance the anti-caries ability of teeth.
Question 6: The cause of tooth decay, how is tooth decay formed, and how is tooth decay caused? Hello, tooth decay is called "dental caries" in medicine, and it is the most common disease in oral cavity. Tooth decay is characterized by changes in the color, shape and texture of teeth, and the teeth gradually turn brown and black. With the continuous change of demineralization and mechanical properties, enamel and dentin become loose and soft, forming cavities. These cavities are suitable for the growth of some special organisms, and these microorganisms will produce some toxins in the process of growth, which will penetrate into the pulp, induce inflammation, cause pain, and finally lead to tooth loss and some complications.
Question 7: What is the cause of tooth decay? Hello, tooth decay is called dental caries in medicine. This is a disease in which the hard tissues of teeth are slowly and gradually destroyed under the influence of many factors (mainly bacteria). The causes of tooth decay are: (1) the role of dental caries-causing bacteria; Suitable bacterial substrates, such as sucrose; Sensitive host; Stay in your mouth for enough time.