With 28-32 teeth in each population, it may seem that the loss of a few teeth has little impact on the overall function of the oral cavity. However, in reality, each missing tooth has an impact on oral function and will gradually have a greater impact on general health as the time of tooth loss grows. In order to improve your quality of life, it is important to restore your missing teeth as soon as possible. Question 1: What are the effects of missing teeth? The mouth and jaw system is responsible for important physiological functions such as chewing, swallowing, speech and breathing, and is closely related to human aesthetics and psychological state, which is directly related to people’s overall health and psychological health. Tooth and tooth loss, tooth loss, and maxillofacial defects can cause a series of complications, such as jaw position relationship disorder, tooth loosening, tooth displacement, more missing teeth and even the whole oromandibular system dysfunction, in addition to causing mastication and language dysfunction. In addition, research results also show that dental and dentofacial defects and losses, occlusal disorders and TMJ disorders can also cause direct or indirect damage to several systems or organs of the body, such as the digestive system and circulatory system. Clinical experience proves that the longer the tooth is missing, the more the number of missing teeth, the later the restoration, the worse the restoration effect, and the greater the impact on the whole body. Question 2: What type of restoration should I choose? There are three main types of prosthetic restorations for patients with tooth loss today: fixed prosthetic, removable prosthetic and implant prosthetic. Fixed prosthesis is a conventional restoration that uses the natural teeth or roots at either end of the gap as abutment teeth, also known as fixed bridge. Fixed prostheses are easily accepted by patients because of their high chewing efficiency, comfort and convenience. For patients with missing free teeth, loose abutment teeth or remaining teeth, intolerant or unacceptable fixed denture restoration, etc., they can choose to have a removable denture, which uses natural teeth and mucous membrane and bone tissue under the abutment for support, relies on the retainer and abutment of the denture for retention, restores the form and function of missing teeth with artificial teeth, and restores the shape of the defective alveolar ridge and soft tissues with abutment materials, and enables patients to remove it by themselves. A prosthesis that can be removed by the patient. The stability and chewing performance of the removable denture are not as good as the fixed denture. If the denture design is not reasonable, the production quality is poor or the patient is not easy to maintain oral hygiene, it may also bring adverse consequences to the patient such as damage to the abutment teeth, mucosal ulcer, plaque formation and tartar accumulation. In recent years, the trend of implant-based restoration of dental defects has brought benefits to patients. As the core of implant denture, dental implants are made of biomaterials and are surgically implanted in the jawbone of the missing tooth area to assume the functions of retention, support and jaw force transmission of the restoration. The implant denture basically solves the problem of retaining support for the restoration of missing teeth at the free end or full mouth, and better restores the function of chewing, aesthetics and pronunciation, and avoids the damage to the dental tissue caused by the preparation of abutment teeth, which is known as the third set of human teeth. Question 3: What kind of material should I choose for porcelain teeth? People often refer to two types of porcelain teeth, namely metal porcelain teeth and all-porcelain teeth. Metal porcelain teeth is a kind of low-fusing porcelain vacuum conditions fused to guide the cast metal base crown gold – porcelain in line with the structure of the restoration. All-porcelain teeth is composed of porcelain, no metal crown, so the gloss is far from ordinary porcelain teeth can not be compared, so all-porcelain teeth than metal porcelain teeth more beautiful, closer to natural teeth, is the first choice of the front teeth deserved. In terms of strength, cast porcelain and glass-ceramic strength and metal porcelain teeth can not be comparable, but the strength of zirconium dioxide all-porcelain crowns can even approach the strength of metal porcelain crowns, for the majority of patients, but its price is higher. Metal porcelain teeth because of the metal periodontal will produce a certain stimulation and on the jaws of the facial MRI shooting caused a certain impact, some ordinary porcelain teeth containing nickel and beryllium on the human body will produce gum black line, a slight toxic reaction and allergic phenomena, please patients choose carefully. The porcelain teeth with precious metal crowns are less harmful to the human body and the periodontium, but the price is also higher. Clinically, if the patient chooses a lower-priced porcelain teeth, it is recommended to use cobalt-chromium alloy for the inner crown of the porcelain teeth, the porcelain crown is less toxic, almost no harm to people and few allergies. If I require absolute perfection in denture restoration, it is still recommended to do all-porcelain crowns, preferably zirconium dioxide all-porcelain crowns, or porcelain veneers or cast porcelain veneers for front teeth with less tooth removal.