Modern endodontic treatment is internationally recognized as the best way to treat tooth pain (endodontic disease, apical disease, severe periodontal disease) to preserve teeth and a treatment method needed to perform porcelain crown and bridge restorations. It is the most effective way to prevent the occurrence of periapical lesions or to promote the healing of periapical lesions by means of root canal treatment, elimination of infected material and root canal filling to preserve the tooth, with a success rate of over 90%. Choosing a medical institution with strict sterilization is the minimum condition to ensure that you are not infected with viral hepatitis such as hepatitis B or AIDS during dental treatment! Then choose a dentist with good theory and technology to do the treatment for your dental disease, so that your teeth will not be treated by quacks! Each dental organ is worth at least 20,000! Indications: teeth with the following conditions should do root canal treatment: 1, pulp inflammation, necrosis, irreducible acute and chronic pulpitis. 2.Acute and chronic periapical inflammation. 3.There are systemic diseases that should not be extracted and need to treat or temporarily retain the affected teeth. 4, the need for porcelain crown and bridge restoration (residual crown and root, root canal therapy is the basis for inlay and pile crown restoration). Treatment process: 1, the root canal nerve and infected dentin and toxic decomposition products, decay material removal; 2, expand and prepare the root canal (posterior teeth can have 3-4 root canals) 3, root canal filling paste + dental glue tip tightly block the root canal or other methods of treatment to isolate the bacteria into the root canal reinfection. The whole treatment process normally requires about 1-4 visits, with an interval of about 2-7 days between each follow-up visit and an overall treatment time of about 2 weeks. Patients who need to kill the nerve of the tooth, with imported pulp inactivator, sealing to be two weeks after the root pulp extraction, no pain. If it is a one-time filling, there may be temporary swelling and pain after the filling, with the taking of anti-inflammatory drugs, the symptoms will soon be relieved and disappear. Occlusal discomfort may occur during and after treatment, caused by the irritation of the alveolar bone around the root tip of the tooth by the treatment. This reaction can be mild discomfort or sometimes severe pain, often peaking about 2 days after the visit and gradually decreasing thereafter. Pain after root canal treatment has its own incidence. Because root canal treatment is complicated, especially the posterior teeth are in the oral position and the number of root canals and more complex morphology, requiring the dentist to master the knowledge of dental anatomy and skilled operation techniques, as well as the need for special supporting fine root canal treatment instruments and equipment and materials, therefore, the posterior teeth root canal treatment is more time-consuming and relatively more expensive. Because of this, root canal procedures can be very painful due to the inexperience of the practitioner. The general cost of treatment is about$200 for single root canal anterior teeth,$300 -$400 for premolar teeth, and$500 -$600 for molar teeth (the specific cost depends on the root canal situation and treatment method, this cost does not include complicated cases and This cost does not include complex cases and hot glue filling). X-rays are a necessary aid. A dentist who does not use dental films for diagnosis and treatment is not a good dentist! Doctors often require X-rays before, during and after root canal treatment to aid in diagnosis, to understand the location of the pulp chamber and the number and shape of the root canals, to measure the working length of the root canals and to provide a basis for follow-up and evaluation of the treatment outcome. To ensure the quality of your treatment, you can ask the same doctor to complete the treatment process. Please note that you should keep the medical record written by the doctor, as root canal treatment often requires each treatment to be coordinated with each other, and the medical record provides the basis for each treatment, and please keep your follow-up appointment on time so as not to affect your own time and that of others. After root canal treatment, the tooth loses pulpal nutrition as well as metabolism, which can easily lead to dehydration, solidity and brittleness increase, hardness decreases, and it is easy to be cracked by harder things or by excessive force to produce soreness and pain. If the crack is deep, it can only be extracted, resulting in very serious consequences. If the tooth is brittle after treatment, it is best to have a high inlay restoration to ensure that the tooth does not break, does not continue to decay, the filling material does not fall out and the bite relationship is restored. It is often necessary to observe the tooth for one to two weeks or more before restoration until there is no local pain (biting pain and basically no inflammation at the root tip). To avoid problems during the observation period, the dentist usually repeatedly advises the patient not to bite hard things with the affected tooth. After a perfect root canal filling, a gold alloy high inlay restoration is carried out to ensure the healing of the affected tooth and to achieve the purpose of the chewing function of the affected tooth.