1, old dental cleaning, okay? Dental health care mainly includes three aspects: namely, personal health care, professional health care and social health care. The professional term of scaling is called scaling, which is an important element of professional health care, because brushing and rinsing cannot remove tartar on teeth, and tartar is the main cause of gingivitis, so it is necessary to remove tartar by scaling, and plaque is the main cause of tooth decay and periodontal disease, so scaling can also remove plaque, so scaling is necessary, and it is generally believed that scaling once every six months to a year is appropriate. It is generally considered appropriate to scaling once every six months to once a year. For patients with obvious periodontal disease, it is better to scaling once every three to six months. 2.Is there any way to clean tetracycline teeth? The treatment method for tetracycline teeth is decolorization, and the Wahl cold light whitening instrument introduced by our hospital last year adopts American technology, which can improve 5-7 shades in just 30 minutes, and is the most ideal method with the least side effects in China, and for serious tetracycline teeth, especially those with enamel defects, the treatment result is not ideal, and generally the method of veneer or porcelain restoration can play a very good role. The results are good. 3.What is implant denture? How many years can dental implants last? Implant dentures are implanted in the toothless alveolar bone with alloy metal nails, and then installed on the metal nail, so the metal nail is equivalent to the root of the tooth, this denture does not damage the neighboring teeth, and will be chewing pressure, directly to the alveolar bone, so there is incomparable superiority over other dentures, especially at present, the widespread use of imported implant nails, so that the five-year success rate of more than 95%, is imaginatively called the human The third tooth. 4.How to distinguish the benignity and malignancy of mouth ulcers? Mouth ulcers are a common oral mucosal disease, many patients often suspect that their ulcers are malignant, medical fear of cancer, identify the nature of oral ulcers generally need to pay attention to the following points: (1) the course of the disease, recurrent, repeated healing ulcers, will not be malignant, the risk of malignancy of ulcers that exist for more than a few months or years; (2) symptoms, painless or pain is not obvious (2) symptoms, ulcers with no pain or no obvious pain are more likely to be malignant, while ulcers with obvious pain are generally benign, but advanced cancer may also have obvious pain; (3) signs, ulcers with a hard base and surrounding expansion found during clinical examination are more likely to be malignant, but tuberculous ulcers may also have obvious surrounding elevation. At present, due to the high number of people chewing betel nut and smoking and drinking in Changde, there are more and more malignant oral mucosa biopsies in our department in recent years, and people around 40 years old are the high-risk group, so please be extra careful. Tongue cancer can be caused by chronic ulcers that do not heal for a long time. When the tongue is stimulated and rubbed by these residual roots and crowns, it will cause traumatic ulcers, which may cause cancer if they are not healed for a long time. At present, the main treatment methods for tongue cancer are enlarged excision of tongue lesion (i.e. removal of tongue 2-3cm away from the lesion), radiotherapy, chemotherapy and postoperative tongue repair surgery. Restorative surgery on the tongue usually affects the patient’s functions such as speech and eating to a greater or lesser extent. It is worth noting that not all tongue cancers can be cured by surgery. Patients with cancer beyond the midline of the tongue and those with distant metastases such as cancer cells metastasizing to the lungs are not suitable for extended resection surgery and can only be treated through conservative palliative treatment to prolong the life and quality of patients. If left untreated, it is better for the whole tongue and tongue root to be infiltrated by tumor tissue, which will then block the airway and make the patient unable to eat or suffocate and die. To prevent tongue cancer, we should pay attention to oral hygiene, brush our teeth every morning and evening, and rinse our mouth after meals; check 1-2 times a year, and remove any lesions as early as possible. 2.If there are cavities, they should be filled early; if there are cavities, the residual roots and crowns that can be repaired, they should be treated in time to restore the normal form of teeth; if there are residual roots, crowns and bad restorations, they should be treated early. 3.The benign lesion or precancerous lesion should be removed for biopsy in time, or treated actively and observed regularly. 4.To quit smoking, alcohol and other bad habits; to strengthen physical exercise, improve nutrition, and eat more fresh fruits rich in vitamins.