Fixed partial denture should be qualified

The bridge is an important part of the fixed partial denture missing tooth morphology and function. The designs of the bridge directly affect the repair effects and oral health. The bridge should have the following conditions:

1. Able to restore form and function of the missing teeth.

2. The role of self-cleaning, to meet the oral health requirements.

3. Have sufficient mechanical strength, chemical stability and good Histocompatibility.

4. Beautiful and comfortable.

In the bridge design should consider the following questions:

1. The occlusal surface of the bridge: First occlusal morphology better, sharp clear pit and fissure ridge, is conducive to chew. Second, the size of the occlusal surface than dental equipment normal teeth small, in order to reduce the occlusal force.

2. Gingival surface of the bridge: one to keep clean; second, good-looking; the Mihashi abutment height smooth to prevent inflammation.

3. The axial plane of the bridge: In addition to the resume form, to meet the aesthetic requirements, but also pay attention to food row overflow, to restore the correct shape protrusion.

4. Bridge's strength: the strength of the bridge refers to the bending strength of the bridge. To occur when the bridge to withstand the occlusal deflection, abutments will produce the response of the flexor moment, when the stress is Dental orthodontic tooth more than 60% greater than the retention force of the retainer when the flexor moment, make the retention of cortical from the abutment.

Deciduous periapical characteristics of the disease

1. Deciduous Periapical early symptoms is not obvious, often when the treatment of acute inflammation.

2. Chronic inflammation of the main clinical acute periapical periodontitis are chronic apical periodontitis caused by acute exacerbation of severe spontaneous pain, chewing pain and occlusal pain. Penetrating teeth of the medullary cavity, common to wear marrow Kong hemorrhagic or septic overflow.

3. Teeth loose and percussion pain. Apical or root divergence at the red, swollen gums, and some facial swelling, local lymph nodes, accompanied by systemic symptoms such as fever.

4. Gathered in periapical pus discharge along the small resistance of the parts, so that the gums fistula, repeated septic overflow, repeated swelling. The emergence of the fistula, acute inflammation to chronic inflammation.

5. Deciduous teeth loose periodontal tissue, pus discharge easily from the gingival sulcus, exacerbate the deciduous teeth loose. If left untreated, the inflammation soon subsided. After the inflammation subsided, the periodontal tissues can heal and dental equipment return to normal.

6. X-ray examination shows the apical and the root of differences between the Ministry of alveolar bone destruction of the transmission image, the diagnosis of acute exacerbation of chronic apical periodontitis, or chronic periapical index. Acute periapical X-ray film apical no change or Correction extraction of six problems only a periodontal space was widened phenomenon. Another X-ray examination, the need to pay attention to the dental follicle bone wall and the permanent tooth germ is damaged.

Primary and secondary school students how to conduct oral health

Oral health should start small, primary and secondary students are at an important period in the development of oral health, primary and secondary students are in the eruption of permanent teeth, deciduous teeth in order to replace the completion of the period, and therefore of the relationship between development and health of permanent teeth; high school students both in the susceptibility to dental caries period, but also in gingivitis incidence peak period, mainly due to local irritation of the plaque and tartar, the performance of bleeding gums, inflammation and swelling.

Third national oral epidemiological survey results show that the 5-year-old children deciduous caries prevalence was 66%, 97% of untreated, 12-year-old children, caries prevalence was 28.9%, 89% of untreated dental caries has dental equipment become a disease of young children in the first category, and oral health problems in primary school students must draw our attention.

The common method of primary and secondary oral health:

1. Develop good oral health habits eat sweets, drink less carbonated beverages. Excessive intake of sugar or drinking too much carbonated drinks can cause tooth demineralization caused by caries or produce tooth hypersensitivity.

2. Learn how to correctly brush your teeth, do a person a toothbrush and a beaker of health care toothbrush, and avoid cross-contamination. Daily morning and evening, brush your teeth twice a mouthwash after every meal.

3. The oral health check on a regular basis, at least 1 per year, to promote an annual teeth cleaning to keep the teeth and periodontal health.

4. Early intervention of oral diseases, such as: promoting the use of fluoride toothpaste, children's dental pit and fissure, focusing on protecting the permanent teeth.

5. Teeth color change, cold, hot, sour, sweet and so stimulate am to timely treatment of pain and discomfort and other symptoms of early dental caries, missing teeth as soon as possible appliance.

6. To prevent and treat dental trauma, dental hard tissues are non-renewable, vulnerable activities, if injured, bleeding gums, broken teeth, loose, shift immediately to Fixed partial denture retention of several reasons the hospital, the entire tooth off, as soon as possible to find teeth on the cold milk, saline or with the mouth quickly to the hospital for replantation.

All-ceramic dental care knowledge after

More and more people pay attention to teeth cosmetic technology, more and more people to do the whole porcelain teeth, then you understand how the full-ceramic dental surgery care? Next we find out more all-ceramic dental surgery care.

1. Pay attention to the hygiene of the teeth. Porcelain teeth and abutment joints easily Crafts plaque, forming tartar, you should pay attention to clean between the teeth can be used floss self-cleaning, and schedule to the hospital to check, clean teeth.

2. Do not use all porcelain teeth to eat something too hard. All-ceramic dental acceptable force is very large, but if by the pressure beyond the scope of it is stress is a situation may arise from various porcelain, it is recommended that the United States who do a full porcelain teeth, try not to be perfect things, like walnut a class of things. Moreover, the beginning of the denture repair before the match, up and down the cusp bit different to slow eating, so as not to dental equipment bite the buccal and lingual mucosa.

It should be exaggerated all-ceramic dental exactly dentures, real teeth is the difference between a good job of all-ceramic dental late care is vital not only to the all-ceramic dental restoration effect is also related to porcelain teeth the life of right and wrong. Therefore, to understand the latter part of the all-ceramic dental care to pay attention to the matter is extremely necessary

Friends for the installation of porcelain teeth, according to statistics porcelain teeth life-expectancy of 20 years or so, maintaining good to be able to use a lifetime, which is inextricably linked with the above two points, so be sure to pay attention to good maintenance and abilities to maximize the extending the time span of the porcelain teeth.

Malocclusion deformity of the dangers and correction methods

One. Malocclusion of the dangers of

(A). Local hazardous 

1. The impact together maxillofacial development: in the process of children's growth, due to the malocclusion will affect the normal development of co-maxillofacial hard and soft tissues. Such as the former cross bite timely treatment under the arch to limit the development of the premaxillary, and the lower jaw there is no coordination between the upper and lower dental arch and over-forward development, so that the formation of the 1/3 of the face of depression and jaw protrusion deformity. With the malocclusion serious face showing the crescent-shaped face. Side of the cross bite or malocclusion causing facial asymmetry.

2. Affect the health of the oral cavity: malocclusion of the teeth crowded dislocation due to less self-cleaning of dental caries and gum periodontal disease, often due to tooth dislocation caused by periodontal damage.

3. Oral function: a severe malocclusion can affect the normal oral function, such as anterior open co pronunciation exception; posterior teeth lock together can affect chewing function; severe mandibular protrusion causing dysphagia; severe mandibular retrusion affect the normal breathing. Severe malocclusion can affect the function of the stomatognathic system, such as opening and closing of the anterior or posterior teeth can be reduced masticatory efficiency. Research, class Ⅲ bony deformity of the masticatory efficiency of 40% smaller than the normal co- Malocclusion can cause abnormal tongue position, so that change in swallowing activities each of the relationship between the position of the tongue and tooth, leaving swallowing dysfunction. Anterior opening and closing, can affect the pronunciation of mandibular prognathism, mainly as unusual pronunciation consonant frequency lower limit down. The frequency range wider, low-frequency component increased. Again malocclusion deformity co interference, early contact, for jaw opening and closing, protrusion, the limits of lateral movement and trajectory will be dental equipment abnormal. Will further affect the temporomandibular joint function and control of matter lesions.

4. Affect the facial appearance: the various types of malocclusion can affect facial appearance, can present open-lip grin, bimaxillary protrusion, long face, short face deformity.

(B). Systemic harm 

Malocclusion not only on the edentulous craniofacial the local cause harm and harm on the body, caused by indigestion and gastrointestinal diseases as a result of chewing function was reduced, In addition, the face of the deformity for patients can cause serious psychological and mental disorders .

Two. What are the methods of correction of malocclusion?

Treatment methods can be divided into preventive correction and after the onset of clinical correction, which includes blocking correction, general orthodontic treatment and orthognathic surgery treatment.

(1). Preventive correction: preventive correction of malocclusion means to take some precautions before malocclusion occurred, remove all possible cause malocclusion factors, to avoid malocclusion occurrence of attention to nutrition, such as the mother during pregnancy to prevent excessive radiation exposure and attention to drug use in order to prevent adverse affect embryonic development.

(2). Blocking correction: When malocclusion occurred early, by a simple method for early correction, blocking malocclusion to the serious development, the development orientation of the occlusal and maxillofacial normal referred to as the blocking correction. Appliance, such as oral bad habits; the early detection of the dentition serious crowded with sequential extraction treatment; deciduous prevention and treatment of early loss and retention; early crossbite correction.

(3). General orthodontic treatment: according to the different dent facial deformity selection of various types of appliance, major appliance object for young people, generally the more complex treatment methods. Common appliances: removable appliance, fixed appliance, functional appliance.

(4). surgical correction: refers to severe skeletal growth and development after the completion of maxillofacial deformities, surgery to correct.

Modulo deformation Causes and Treatment

Which the porcelain crown, a perfect restoration is the perfect match between need an accurate model, and the doctors and technicians to do. Often because the model deformation to the processing plant rework is no longer a minority, the following that the causes and treatment of a few model deformation.

       

Of course, not simply a model of deformation is the way; there are also some seasonal reasons, such as: spring, summer, autumn and winter when the season processing plants due to model deformation and rework repair experience greatly increased. Gypsum in 10 ° C to 18 ° C is the most prone to change, there is also closely related to the house air humid, so model deformation occurs when the season things often! Only in this way need closer co-ordination between doctors and technicians. Without mutual complaints to shirk its responsibility, this is the nature gave us trouble!

       

Season to the doctors and technicians trouble, I said here a few treatment methods.

1. The doctor from the patient's mouth to remove the model, impression 5 to 8 ° C warm water and then dry, poured into the ultra-anhydrite can not be too thin or too thick. Plaster too thin, after the model of curing is very strong and very fuzzy model of the shoulder. Plaster too thick, it is likely to produce the shoulder to take incomplete. Not to the ordinary white plaster and dental equipment die stone mix. Plaster the more dilute model is more solid, denser and stronger.

2. Poured into the die stone, do not model on the sun exposure, can not wait for curing on the damp or water should be placed to ensure a constant temperature, dry curing, so as to reduce the chance of deformation of the model. Because ultra-anhydrite chemical reaction producing heat, there will be slight changes on the sun exposure to make the model of severe expansion. Crown loose or package gingival phenomenon will occur in the restoration completed into the patient’s mouth. Chemical reaction, such as ultra-anhydrite, if too cold and Your teeth need to be corrected vice versa.

3. Removed from the three hours poured into the die stone model, doctors must carefully check the model, right shoulder and neck edge trim so that the technician in the production of which can be clearer to see the exact location of the shoulder and neck edge, so production out of the prosthesis can be regarded as a perfect restoration.

Zygomatic arch prominent correction

Zygomatic arch prominent correction

Zygomatic arch is too high, towering mast, the majority of congenital reasons, trauma, facial vascular malformation, lymphangioma, and fibrous dysplasia can also be caused by unilateral or bilateral zygomatic arch benign hypertrophy, or asymmetry, the need for surgical correction.

Zygomatic arch, narrow the indications for surgery:

1. Zygomatic arch, good mast facial contours.

2. Traumatic or fibrous dysplasia, resulting in unilateral or bilateral zygomatic arch hypertrophy or asymmetry.

3. Treat vascular malformation, lymphangioma, and nerve fibers in the tumor caused by or associated with the zygomatic arch hypertrophy.

4. Patients with no heart, kidney, liver, lung, and blood system and other internal organs control disorders, mental condition, and age 50 to 60 years of age.

Zygomatic arch narrowing surgery contraindications:

1. Zygomatic arch area malignancy zygomatic arch hypertrophy.

2. with heart, lung, liver, kidney or blood system diseases in patients.

3. Aged over 60 years of age, the absolute contraindications for this is not a surgery, which is a relative contraindication for surgery.

4. Associated with patients with mental disorders.

For patients over the age of 30, the zygomatic arch, narrow plastic most of the wrinkle facial subperiosteal at the same time.

Zygomatic arch, narrow Intraoperative preparation

1. The general physical examination to exclude surgical contraindications.

2. The female menstrual period for surgery.

3. Routine preoperative application of Vet K1, 10 mg / day, 3 days.

4. Head and lateral radiograph and the zygomatic arch-bit chip, the conditional three-dimensional CT of the zygomatic arch radiograph.

5. Measurement of the zygomatic arch width, surface 1/3 the width of the zygomatic arch crown.

Skin preparation: take the coronal incision or dental equipment preauricular incision, preoperative routine 1:2 to 5000 clean off shampoo three days, the oral incision, preoperative dentifrices, and mouthwash to prepare three days.

Narrow cheekbones usually there are two types: prominent cheekbones, less serious corrective surgery through the oral incision, prominent cheekbones, is obvious, and usually choose the incision within the hair is very large, the magnitude of this surgical correction surgery behind the type of change is very significant, and Five eat so that the teeth to change whitening after surgery compared with the previous temporal fullness of the periorbital the cheekbones region of the curve compared with the previous soft facial contours are often compared with the preoperative obviously the younger, but also can pull wrinkle surgery.

How to whiten tetracycline stained teeth

Now, there are more and more people want their teeth as white as jade, so many people choose to do beauty to the teeth. However, basic conditions for their own teeth for cosmetic dental select the appropriate method in order to get the best results.

First, you should be aware of their own teeth not white enough. In medicine, simple teeth yellow, dark color, such as is referred to as a dental coloring. It is generally divided into the coloring exogenous and endogenous coloring two kinds. Simply put, Stain is extrinsic staining of teeth, "mainly due to food coloring, smoke stains cause. Endogenous coloring is taking certain drugs or dental equipment drinking water quality and other reasons in the period of tooth development lead to abnormal tooth color are tetracycline and dental fluorosis.

Teeth coloring generally have two kinds of treatment: restorative treatment and bleaching treatment. Restorative treatment method is to grind part of the natural teeth with artificial materials covered in the corresponding parts of, its advantages are obvious change in tooth color, the drawback is that the face must wear lead to complications in addition to natural teeth and Dental experts recommend dental Privacy Policy Manual injuries to the pulp may sex. Teeth bleaching treatment is one kind of treatment do not have to wear in addition to change the color of natural teeth, leaving teeth, such as recently adopted by many hospitals and dental clinics whitening technology is one of the, which is covering the tooth surface through a special cold-light source bleaching agent, so that the short period of time penetrate the hard tissues of teeth to change tooth color, its advantage is that no damage to the dental hard tissue, operating treatment time is about 30 to 45 minutes, but the downside is that drug effects bleaching effect due to personal dental situation will be different.

Notes on tooth denture

Recently some friends do not understand dental extractions Note this end tooth dot com invited experts to talk about dental extractions Note.

Extraction is not only because the teeth to oral disease, dental, doctors sometimes recommend based on the patient's oral condition whether tooth extraction. Dental extractions Note What?

1. 30 minutes after the bite the cotton balls, spit, do not bite too tight or dental equipment bite too long.

2 days, do not brush your teeth, can only be light salt water gargle light.

3.2 hours after eating, to avoid overheating, the best liquid.

4.3 days can be conventional oral antibiotics.

5.1 weeks in saliva with bloodshot eyes as normal, tooth pain getting light as normal.

6. Denture Note, not because there was blood Anti-jaw deformity in the mouth, and repeatedly suck, spit blood clots that may cause wounds unhealed.

7. If any of the above phenomenon outside the immediate referral.

Teeth become loose after correction?

Correction after the teeth become loose Ken is not able to sex, but it can not be ruled out before orthodontic itself suffering from periodontal disease, orthodontic doctors were paid insufficient attention so that the orthodontic treatment process led to the aggravation of periodontal disease. The possibility of resulting in loose teeth. But this loose tooth with orthodontics is no direct relationship.

Under normal circumstances, the person's teeth only the crown exposed, while the root is completely buried in the alveolar bone, it is very sturdy. In fact, teeth are not like a nail fixed, but a "mosaic" to maintain its own stability, relying on the periodontal ligament in alveolar bone. Flexibility and toughness of the periodontal ligament loosening of the teeth during function, so as not to hurt. This phenomenon is known as the teeth of the physiological mobility.

When the root around the alveolar bone is gradually absorbed for some reason, the teeth are beginning to loosen. This loose pathological. Alveolar bone resorption more, more powerful, loose teeth, teeth will fall off when the alveolar bone is completely absorbed. In China, the incidence of periodontal disease in more than 80%. The old people gradually loosened teeth, shedding mainly due to periodontal disease. In other words, an old people loose tooth with orthodontics is not related. In fact, the dental appliance arranged in neat rows, oral hygiene, can assist dental equipment in the treatment of periodontal disease. In this sense, orthodontics can prevent old people loose teeth.

Therefore, after the correction, the teeth become loose you, in general, will not.

The process of orthodontic, periodontal ligament, alveolar bone structure will be the corresponding alterations. Some patients will appear to After tooth extraction must be the teeth the mild loosening of the teeth, soreness and discomfort, chewing weakness, etc., this is a normal reaction in the course of treatment. After the end of the correction, these phenomena will be gone, the teeth will return to normal.

How long the service life of titanium porcelain teeth?

Titanium porcelain dental porcelain teeth, and now more and more people use titanium porcelain teeth, as more and more patients with a friend to select titanium porcelain teeth, titanium porcelain teeth life is also attracting much attention, the life of titanium porcelain teeth on long?

The service life of titanium porcelain teeth is relatively long, many friends loaded titanium porcelain teeth are certainly the service life of titanium porcelain teeth. This is mainly because of titanium metal on the surface of the titanium porcelain teeth containing a layer of passive film, this layer of the passive film has a strong anti-etching performance, thus determining the service life of titanium porcelain teeth very length.

Even so, in view of the titanium porcelain teeth or dental equipment dentures, real teeth, all we need intensive care, and that mention is dentures? Friends of patients in the loaded titanium porcelain teeth, or it meticulous care, the only way to make it more durable. In general, the porcelain teeth can be a decade or so, the service life of titanium porcelain teeth even for a long time. Normal life, pay attention to the care of porcelain teeth is very important, and care of good porcelain teeth can use for life.

Above is to introduce a detailed description of The denture How to protect the health of the gums service life of titanium porcelain teeth. But need love is: do porcelain teeth have to be formal, so as to protect the quality and longevity of porcelain teeth.