Recognize the loose teeth proactive treatment

Teeth like a long firmly in the soil in the trees, tree trunks stand on the ground, roots deeply buried in the soil. Between the root and the alveolar bone, ten million of elastic fibers stretch forward. Root hanging in the alveolar bone the middle of the fiber, medicine, calls it the periodontal ligament.

Under normal circumstances, the teeth can have a slight loosening of limits, this loose most of chewing food can be found; the doctor uses instruments to shake the teeth, teeth shaking within the range of one millimeter. This is a physical movement, and its teeth, it has a protective effect.

1. The teeth have been knocked down, falls or excessive bite, can make the teeth occurred shake. This is because the alien is too large the power of the periodontal ligament injured, damage to elastic fibers between the teeth and periodontal ligament, so that the teeth loosened.

2. Periodontal disease caused by loose teeth. Periodontal ligament has long been a chronic inflammatory stimulus, the periodontal ligament fibers gradual degeneration destruction. After the gradual destruction of the periodontal tissues of the teeth of these support teeth will have loosened.

3. Periodontal degeneration can cause the majority of loose teeth. Periodontal degeneration mostly occurs in young people, and degenerative changes in the periodontal tissue destruction of periodontal fibers and alveolar bone absorption, resulting in loose teeth and shift. Loose teeth caused by periodontal degeneration occurred in the first upper dental instruments lower front teeth and the first molar teeth shift, the original rows of teeth, thinning, anterior teeth protrude, gap between the teeth. Periodontal degeneration in clinical practice, although relatively rare, but great harm, often make the young people, early loss of full mouth, should attract attention.

4. Of acute apical periodontitis, mandibular osteomyelitis, tumors can cause jaw Paste in the teeth loose. Diseases that can affect the gums and The dental implant is suitable for the crowd periodontal support, such as necrotizing gingivitis, vitamin deficiency, diabetes, etc., but also the loosening of the teeth.

Precautions before and after dental implant surgery

Dental implant surgery so that we have a neat white teeth, you have a healthy dental what precautions do dental implantation? This is an issue of concern in dental implant surgery patients before surgery. To help solve this problem, the following experts to help explain.

Precautions before dental implantation:

1. Based on history and examination, indications, exclude systemic and local contraindications. For relative contraindications, through treatment, the removal of negative factors after implant surgery.

2. If tooth extraction, gum surgery, you should wait three months until the bone defect recovery, X-ray showed alveolar bone quality and form of satisfaction and then considered for dental implant.

3. For dental implant surgery should be to ensure good health. General blood test, patients with mild hypertension, blood pressure should return to normal, women should avoid the menstrual period.

4. Dental check-up should be carried out, including the dental mucosa, gums situation; remaining teeth solid; the remaining alveolar ridge form; the jaws of the patients I dental hygiene habits.

5 X-ray examinations.

6. Before surgery should remain a dental cleaning, cleaning teeth should be made in advance and cure of dental inflammation, and disease.

After dental implant Note:

1. The dental implant is generally divided into two steps: first: implantation of the implant; second: bordered the implant has been securely fixed partial denture. After implantation of the implant, not opened front of the line can not wear temporary dentures until 7-10 days after suture removal, see if you need to modify and then decide whether to wear.

2. In stitches after three to six months, should not implant shaking, can not use it to munch, so as not to loose root, root around the newly formed bone and dental instruments fibrous connective tissue affected, thus affecting the cultivation effect, which is guaranteed very important aspect of the dental implant effect.

3. In the implantation of the implant should be noted that the dental health, mouthwash after a meal can also be used to liquid mouthwash should not be chewing something excellent. Daily morning and evening application of a soft brush or cotton strips cleaning dental implant abutment time.

4. Seriously implement the doctor's advice on a regular basis back to Tooth extraction how much money the hospital referral. General 1, 3,6,12 months of referral, to ensure that the dental implant no problem, even if the problem can be repaired in time.

What is the best way to buck teeth correction?

A Buck tooth is one of the performances of irregular teeth, although often met in our daily lives, but, these is not beautiful, and affect our own image.

Buck teeth is more common symptoms of dental anomalies, buck teeth on the oral health and image of the beautiful have a significant impact, and thus for the buck teeth, and now the best way is through the beauty crown technology to improve the correction. Here's an up and understand it.

For the correction of childhood snag wearing braces to correct the bad oral habits. But for adults, snag the correction is not a simple correction of the problem, orthodontic treatment often requires the beauty crown in order to obtain the desired results. Before surgery to do a series of preparations, such as dental X-ray projection measurements, dental plaster model, but also with good teeth of the patient's appearance design, location, and then surgery. Surgery in the oral cavity, to avoid the scars left on the skin.

Buck teeth correction is the best way to dental instruments beautiful crown orthodontics. Buck teeth beautiful crown correction method is a popular in Europe and the United States, Japan and Korea emerging cosmetic dental technology, which emphasized on the basis of the traditional porcelain teeth, the teeth, the cosmetic effects of adult misplaced teeth, deformity of the clinical crown of the tooth impose professional means to be restored, and finally America crown.

Beautiful crown in the dressing do not damage the teeth, gums, teeth according to the morphology of the alveolar bone. First to suitably adjust crooked teeth, teeth lordosis part with the beautiful teeth crown repair, and Why missing teeth must be repaired in time protect the original teeth, and a neat and bright, white teeth, and you're done, and seamlessly.

What is the immediate dental implant?

Dental Implant Experts point out that the present study is more common applications is the extension of dental implants, implants in healthy alveolar ridge after tooth extraction wound healing in 3-6 months until the implant and bone fusion after denture repair. The immediate dental implant refers to the same period implants after tooth extraction, the extraction and implant placement.

With the continuous development of oral medicine, immediate dental implants in clinical use is also more and more, a large number of experimental and clinical studies confirmed that immediate implant and extension of cultivation the same can be successful Osseo integration. Compared with the delayed implant tooth, immediate dental implant has the following advantages:

1. Immediate physiological planting effectively reduce alveolar bone absorption, to avoid the resulting growing areas of insufficient bone mass and bone graft or reconstruction.

2. Conducive to implant the desired anatomical location, it can better meet the biomechanical requirements and aesthetic effect.

3. Shorten the course of treatment, reduce the suffering of patients.

The experts pointed out that the following conditions: immediate dental implant:

1. The health of patients, health, and dental instruments good oral hygiene situation requires, if with diabetes, heart disease, high blood pressure, and blood diseases are advised to postpone surgery.

2. Everyone bone, some bone layer is too loose, the implant can not be closely integrated with the alveolar bone, the implant is bound to fail. In this case, only allow the patient to give up dental implants in favor of traditional denture repair.

3. Gum bone to have a certain width and What factors will affect the quality of porcelain teeth height, planted nail 10-14 mm long, 3-4.5 mm in diameter. If the gums, bone is not wide enough and high, you should first after the bone grafting and then consider planting.

4. If periodontal disease patients, is generally not recommended to select the immediate planting shall first obtain a good treatment to the dental implant.

How to brush your teeth is correct?

While brushing is the thing we do every day, but for the correct brush method of brushing your teeth, many people do not understand. The correct method of brushing is not only able to remove plaque, debris and food scraps, but also massage the gums, promote gingival blood circulation, improve the health of gums. Not casually brush the two can achieve.

Myth # 1. Lateral back and forth brushing

Experts advocate a vertical brush does not damage the teeth and periodontal tissue. That the brush head on the side of the teeth, the bristles against the gums and teeth, hair-side direction towards the root, with teeth about a 45 ° angle, the brush head vibrate along the  dentition direction up and down. Quiver amplitude of about 0.5 cm to vibrate back and forth four or five times, so that the bristles into the gingival sulcus and interdental area, to remove plaque and massage gums. Subsequently toothbrush from the root crowns of vertical brush, clean the tooth surface.

Myth # 2. With tap water brushing

Get up the morning one, a lot of people will be "buzzing" under water carried brushing teeth suitable for normal metabolism in water temperature of 30-36 degrees Celsius, when brushing teeth, such as a long time by the sudden cold and dental instruments hot temperatures stimulation, affecting the life of the teeth, in addition to eating acid foods do not immediately brush your teeth.

Myth # 3. The choice of toothbrush

In fact, the only choice is to brush a small toothbrush, flexible rotation in the oral cavity. In addition, the arrangement of the bristles must be reasonable, generally 2-3 rows of toothbrush itself, cleaning, easy to clean teeth and brush your teeth. The bristles selection of high quality nylon yarn, thin and flexible. The top of the bristles should be The best way to fix front teeth missing rounded, not damage the teeth and gums when brushing your teeth.

What factors determine the life of porcelain teeth?

Porcelain teeth life related to oral health problems, our future is very important for us. To make the life of porcelain teeth to learn more about the following we introduce the life of porcelain teeth and what factors have a direct relationship, we can bring help.

1. The level of a doctor. The life of the all-ceramic porcelain teeth and the doctor of technology, medical technology, natural Porcelain tooth life long.

2. Life and texture of porcelain teeth. Mainstream contemporary porcelain teeth materials: metal, metal ceramic and all-ceramic and other types of porcelain teeth materials have different advantages and disadvantages. Preoperative medical treatment, preferably through consultation with the oral cosmetic doctors to dental instruments understand that the most suitable ceramic dental materials.

3. Personal oral hygiene. For the United States if you want natural all-ceramic porcelain teeth and a good life, then we must develop a good teeth cleaning habits, so as to avoid the accumulation of food debris, preventing the generation of tartar; Second, teeth are more vulnerable, so the United States who seek after Picky eaters is not conducive to dental health the teeth with all-ceramic porcelain teeth, in the diet can not eat some excellent food, this will affect the life of all-ceramic porcelain teeth.

4. The life of porcelain teeth and the teeth to their own circumstances. Porcelain teeth, the use of time and is closely related to their own circumstances of your teeth, the reason is very simple, not how healthy the root of the teeth will be all right, and put on porcelain teeth, life is not very long.

Buck teeth reshaping the way there?

Open lip grin the buckteeth patients from the front, deep nasolabial fold and facial contour the lip too much protrusion, buck teeth are generally not associated with serious dysfunction, but it is affecting facial appearance from the side, making the buck teeth who can not communicate with people, and not dare to laugh, but also may become very confident. Buck teeth shaping the way are the following:

1. Buck teeth correction - orthodontic correction

Orthodontic correction according to the United States who seek a different dentofacial deformities selection of various types of appliances, the main correction objects for young people, the general correction of teeth common appliance: active appliance, fixed appliance, functional appliance. Activities appliances are generally used for children and deformity correction, functional appliance for the correction of children's bone deformity.

2. Invisible braces: oral stealth correction using transparent bracket appliance, the invisible straightening teeth dream, unaware between the teeth quietly beautiful. Corrected time than traditional correction reduced by 1/3 referral fewer, easier to live in the rapid correction. Abstract easy to wear, easier to clean the teeth a clean hygienic living environment, to prevent tooth damage and dental instruments sub-lesions. Brackets and arch wires, no food residue, the more trouble there is no friction of oral mucosa, greatly reduce the feeling of discomfort, pain.

3. Crown of beauty: using 3D digital positioning technology, patients with a combination of face, color design personalized dental program, corrected teeth, and How to the fix missing teeth beautiful. The day after surgery to improve the relationship of the lip, face and bite jaw the shortest possible time will be able to have even teeth. Popular in recent years a new cosmetic dental cosmetic crowns, cosmetic crown technology draws on the strengths of a variety of dental technology, breaking all the disadvantages of the traditional porcelain teeth, with the non-extraction of the United States teeth, no pain, a short time teeth, after years of black lines, etc., and to achieve lifelong there to protect teeth effect.

Children's tooth decay is the most commonly used treatment

Oral expert experts tell us that tooth decay is a very common form of dental disease in the children's group. Once the children have tooth decay will not only affect the beauty of the teeth, will produce pain, and even adversely affect the impact on their self-confidence. So the children have tooth decay quickly to treatment, not missing an opportunity. Tooth decay, how do? Below us a look:

Children's tooth decay is mainly formed because of dental plaque. Plaque is a layer of the tooth surface is almost colorless film containing bacteria causing dental caries. Every time after eating sugar or dental instruments starch in these bacteria in dental plaque and food chemical reaction occurs, resulting in tooth decay acid. Over time, the enamel of the teeth will damage the fragile moth spots, if the deterioration is the formation of cavities, decay. Recommended reading: How to determine whether the child tooth decay

Streptococcus mutans adhesion to the tooth surface in dental plaque acid production of sugar and starch glycolysis food, gradually make the tooth demineralization defect formation. Once the parents found that your child suffer from tooth decay, then you should promptly bring them to the regular professional oral hospital for treatment. If left unchallenged, then the harm will be What is the prevention of children's tooth decay more than just the teeth.

How to determine whether the child is tooth decay?

The tooth decay is the most common form of developmental stages in children's milk teeth oral disease. It has been of great concern to an Oral Pathology. Because it is the gathering place of many diseases, the only effective cure tooth decay, and the health of the body considered is guaranteed.

The oral experts pointed out that: tooth decay attributed to three elements, namely, the role of bacteria in the mouth, eat high sugar content foods, and easy formation of tooth decay tooth, these three elements together form the cavities.

How to determine whether the tooth decay of children

1. Sensitive symptoms in the beginning refers to eat sweet and dental instruments cold hot food, dental pain feeling this time is the mid-tooth decay. Recommended reading: What is the Children's tooth decay?

2. Earlier tooth decay in the enamel of the tooth surface, the patient usually no obvious symptoms. However, according to the different parts of the cavities occur, if carefully observed, will find some clues.

3. If the decay occurs in ditch nest part of the tooth surface, showing a black color for the corresponding region of hyper Older people how to protect the denture the district below the rough white spots, fine needle detectors.

Orthodontic effects of age have anything to do?

The orthodontics some understanding of the beauty who will understand that the orthodontist has a more subtle link between the effects of age. Orthodontic effect and age for orthodontics beauty is concerned, how to balance it?

The surgical orthodontics is frequently used in Korean surgical orthodontic surgical procedure to open the supporting bone (cortical bone, poor blood supply and heal slowly, the prognosis pick marks), osteotome to adjust the relationship of the teeth and jaw, surgical incision, involving the movement of large bone, the surgical risk is high, extraordinarily high requirements for doctors, usually takes 2-3 hours.

The non-surgical orthodontics generally opts for braces correction, the principle is to apply force to tooth movement, tooth rearrange. Braces corrected effective with minors, the general estimate of orthodontic treatment is about 2 years, and Odontogenic of orthodontic good results, such as the bone deformity have to go through surgery.

In fact, the impact of age on orthodontic, because when the tooth began to be bacterial decay, if not to rely on the clinics of dentists, to prevent the teeth continue to dental instruments decay, the teeth could not stop decay or decay disappear teeth to restore the original calcification extent of the current elderly population is the majority and not the habit of going to the dentist on a regular basis; two is because when people older, physical function is no longer as before, resulting in the hands dexterity, brush your teeth brush too long will not be as in the past-like clean.

Therefore, when an adult wants to How to prevent maternal bleeding gums correction, the dentist usually spend an hour to one and a half hours of education his oral knowledge; patients attending a need orthodontics, must be collected by the dentist oral information in this patient in order to analyze the pros and cons of corrected or uncorrected.

Why are the teeth before porcelain teeth?

Today, the porcelain teeth has been favored by many beauty, many patients and friends want to do porcelain dental treatment, but why you want to do porcelain teeth molars very puzzled, do porcelain dental all know is the lack of an installed three, but also the molar, but for what reason? Why do porcelain teeth molars do?

Do porcelain teeth premolar purpose is mainly to form a good solid type and resistance type. Porcelain teeth attached great importance to the preparation of the tooth, molar is a very important process which, if handled properly, even if a failure of dental instruments even the best materials.

Early wear should eat soft foods, and then adapt to eating normal food. Porcelain teeth and abutment joints easy to assemble the plaque, the formation of tartar, should pay attention to keep the mouth clean, and the habit of Brush after each meal and flossing between the teeth, and Details of dental restorative materials regular visits to the hospital for examination, cleaning teeth. Porcelain teeth by pressure more than the stress range various porcelain, so do not bite too hard foods, such as walnut or something.

Seniors can choose the general principles of denture prosthesis

Denture repair many types of body have different indications, the oral condition of the elderly are also more complicated, so be sure to carefully select the forms and materials of the denture prosthesis.

Elderly degradation of gingival recession, it will slowly lose his teeth, but no teeth to eat also suffer, so elderly people often choose to wear dentures. Dental out-patient had encountered the elderly to inappropriate choice of dentures and other dental problems, so the elderly wearing dentures or for their own dental status, choose their own.

Dentures on the denture base and a flexible metal hook, the elderly are free to take the wear. Dentures molar requirements are small, cheap, and if not, you can also do fixed restoration. If the elderly have the following three conditions, you should choose to install dentures. A. Gums rely on after tooth loss. Two. The more the number of consecutive missing teeth, missing teeth and gaps span. 3. Severity of the defect and fixed prostheses can not be restored to its ideal appearance and fullness.

The advantage of dentures is desirable down cleaning, oral hygiene. The disadvantage is that after installation to adapt a little longer, and dentures larger, into oral foreign body sensation, some will affect the pronunciation, poor stability, chewing function, poor recovery; metal hook will affect the cosmetic results. Long-term use may damage adjacent teeth. Removal or improper use of easy to wear gum dentures, but most patients shortly after the dental bite material pain or worn gums, it may be fitting dentures, to the hospital to repair.

Many elderly people that run pain is normal, it will hold on, or simply do not wear, or even discarded, and to do so are wrong, most of these cases can be solved by repair, if it is a model system to take or dentures produced , you can re-production. Long-term wear dentures prone to corrosion of the adjacent teeth, resulting in loose teeth, clean the areas that are not easy to cause inflammation. Special needs, single dentures due to the smaller and easier to loose and be swallowed, once swallowed into the esophagus or stomach, should be timely treatment, can be removed using gastroscopy, in order to avoid dentures linked to the gastrointestinal tract damage. Recommended for the elderly on the set with dentures, choose the fixity good way to avoid the risk of swallowing.

Expert Tip: dentures metal stents cobalt-chromium alloy, titanium alloy, pure titanium and precious metal alloys, commonly used for titanium and titanium metal stents, the difference lies in the stability of metal and human body capacitive side, lightweight titanium stent quality, comfort, good biocompatibility, compared with the former price is relatively expensive. The majority of patients no longer the installation of dentures as the preferred.

Fixed dentures, missing teeth and adjacent to both sides of the teeth, dentures fixed on the patients themselves do not have to choose their own wear. Mill change the fixed denture in the denture, first missing teeth on both sides of the adjacent teeth as abutments, and dental instruments then put in its above a capped, then both sides of the connection, middle bordered dentures, by cementation agent is fixed on both sides of the good teeth, such as bypass, it is called a fixed bridge.

Fixed prostheses are small, comfortable, beautiful, foreign body sensation, easy loading oral habits, chewing function very well, like real teeth. Fixed dentures requirements of elderly missing teeth and only one or two adjacent natural teeth have a sufficiently high solid root, tooth tissues healthy, normal tooth position, tilt and twist.

If the elderly choose a fixed dentures, it is necessary to pay attention to the clean crown, especially in ordinary metal braces have certain corrosive, easily lead to reactive inflammation of the gums or allergies, so the need to pay special attention to health. Choose fixed dentures for the elderly, long-term wear, improper cleaning, but also prone to dental caries, periodontitis.

The dental implant is in a pre into the place of missing teeth with surgical methods of artificial titanium root is implanted in alveolar bone, and then installed on the basis of a denture. Compared with fixed dentures and dentures, dental implant does not damage adjacent teeth, and wear comfortable, natural, able to maintain normal alveolar bone, have a similar bite force with natural teeth, and long service life, is a permanent repair.

Dental implant treatment cycle is longer, but the range of application of the crowd, small and safe surgery, without hospitalization, generally accept the conventional extraction surgery can be considered implant restoration, patients with full mouth of teeth missing, if you planted a few implant, you can solve dentures fixed the problem.

Expert Tip: enough to want to plant the dentures for the elderly must be the mouth, missing teeth and parts of the alveolar bone; no serious periodontitis, periodontal disease; the gap between the upper teeth and lower teeth bite when not less than 0.5 centimeters. For the cultivation of dentures for the elderly, In particular, they pay attention to oral hygiene, gingivitis will be What is the advantage of dental implants very easy. After implantation to regularly review, while maintaining oral hygiene, do not chew the excellent food.

Need to remind patients not suitable for some special patients with chronic diseases such as diabetes, heart disease and uncontrolled hypertension, blood disease, osteoporosis, and oral cancer, postoperative need radiotherapy immediately accept the implant restoration. In addition, heavy smoking and alcohol patients can not maintain good oral health conditions should not be planted repair.

All-ceramic dental care methods and precautions

If your teeth defects, then, the doctor would certainly recommend that you use all porcelain teeth, all porcelain teeth, but the most popular dental materials, but, even if the doctor told you have done the all-ceramic dental care matters you will surely be very easily overlooked.

The all-ceramic dental care to note:

1. Early wear full-ceramic dental patients with mild discomfort should be patient and practice using, become accustomed. Eat soft foods, avoid eating cold hot food, so as not to cause excitation pain, after about two weeks to eat normally and then adapt to eating normal food. And wearing full-porcelain teeth early and repair than the tip of the upper and lower teeth may vary, slow eating, and gradually adapt so as not to bite the buccal and lingual mucosa.

2. All porcelain teeth by the pressure of various porcelain more than the stress range, so do not bite too hard foods, such as walnut or something; Moreover, the beginning of the denture before restoration, the upper and lower cusp bit different to the slow consumption of , so as not to bite the buccal and lingual mucosa.

3. Porcelain teeth and abutment junction is easy to aggregation plaque, the formation of tartar, should pay attention to keep the mouth clean, and the habit of Brush after each meal and flossing between the teeth, and regular visits to the hospital for examination, cleaning teeth. Should be concerned about the health of the surrounding gums, gingival recession part is dental instruments rarely only one tooth, usually one, since the teeth due to atrophy and fall off, the surrounding teeth to shrink the risk is very large, as support loose teeth, will cause the whole row of porcelain teeth to fall off.

All-ceramic dental care, the use of life will be very long, and some can even reach for life. All-ceramic dental restoration is not reversible, so patients a choice of all-ceramic tooth types should be Fixed partial dentures on the swaged crown all-ceramic dental choice should be careful to choose their own full-porcelain teeth.

Secret dental implant treatment process

The dental implant process is a lot of people do not understand, so many people are afraid of dental implants, dental implant treatment process is what? Following experts for the process of dental implants in the detailed introduction.

Dental implant process:

1. Inspection and design: MD, asked in detail about the patient's medical history, make the necessary systemic and oral examination, X-ray films to understand the parts to be planted bone and bone mass, to determine whether the patient suitable for implant treatment for patients, and in accordance with the requirements of the patients to provide the best treatment options.

2. Implants: implant under local anesthesia in the gums, bone, tight suture, 7 -10 days after suture removal.

3. with bone healing: bone healing of the planting bed length depending on the patient bone status and the planting site. The visible region of upper jaw, bone conditions, and available at the implant immediately after the use of temporary crowns, as soon as possible to resolve the patient's appearance and pronunciation. Some patients with a full mouth of missing teeth, you can also wear in the 24 to 48 hours after implant implant-supported overdenture. Some patients with only bone healing of March. Bone conditions, and even requires the use of patients with bone dental instruments incremental technology; you need 3 to 6 months, and even the bone healing period of 9 months.

4. Connect bone healing abutment: When the implant completely combine with jaw implants connected to a healing abutment, forming the cuff of soft tissue within two to three weeks.

5. Completion of repair: after the formation of the soft tissue cuff, doctors use a permanent base station to replace the healing abutment and take an impression of teeth repair design, crown or Preparation of porcelain teeth bridge is a good job, you can wear the implant-supported teeth.

The above is an expert on the introduction of dental implants; I believe you have a certain understanding of dental implants.

Eight kinds of disorders cautious extraction

Tooth extraction, dental minor surgery, but the particular circumstances, should be carefully considered. Therefore, prior to the extraction must first ask the Qing history and it clearly re-extraction. Patients, following a history of tooth extraction can not be too casual.

1. Hypertensive patients, if blood pressure is stable, but also inadvertent, brain, kidney and organic damage can generally be tooth extraction. If your blood pressure than 24/13.3kpc who should be treated, and then consider the extraction.

2. Patients with heart disease if the following circumstances are not suitable extraction: 6 months of myocardial infarction; unstable angina or have only recently begun; congestive heart failure; uncontrolled arrhythmia.

3. Blood diseases, such as hemophilia (coagulation factor deficiency). Thrombocytopenic purpura, leukemia and other patients, such as rash extractions often cause uncontrolled bleeding, and even life-threatening.

4. Extraction of diabetic patients, postoperative prone to wound infection, but also increase diabetes; must extraction, should be in the diabetes control and Problems in the production of porcelain metal based crown and bridge extraction before and after the routine use of antibiotics to prevent infection.

5. Hepatitis, patients with liver cirrhosis, liver function, there is obvious damage should be hepatoprotective treatment until liver function of basic normal before extraction.

6. Extraction within the pregnant women in the first three months of pregnancy easy to abortion, within 3 months after tooth extraction easy to preterm birth, it should be dental instruments relatively safe extraction during the first 4, 5, 6, three months of pregnancy. The women's menstrual period extraction easy bleeding, it should be suspended extraction.

7. Hyperthyroid patients without medical treatment, not extraction.

8. The site of the maxillofacial cancer had radiation treatment should not be pulling teeth, in order to avoid radioactive osteomyelitis.