Missing teeth can affect the face, chewing and speech functions, I believe that many people know, but missing teeth if not timely restoration will affect the health of neighboring teeth, shorten the life of normal teeth, I am afraid that few people still mind. Especially those young people with few missing teeth may feel a little alarmist, in fact, the reason is very simple, it should be shared by everyone to bear the power of chewing, gone a few teeth, the rest can only work overload, can not be hurt? Missing teeth should be set in time, but many patients to the hospital, listen to the doctor to talk about dental things, head a little bored, do not know what to do in the end. Set what kind of dentures need patients to make their own decisions, after all, to damage part of their own teeth, as well as the cost of dentures, encountered a doctor who can speak clearly, may understand a little, but will still be in the clouds to obey the doctor’s advice, people let what to do what to do as to why? There is only one sentence: “The doctor said so.” Dentures are actually a special, personalized and practical artifact, and practicality dictates that it has certain indications, and not anyone is suitable for one option, while artifacts may involve quality. Some of the reasoning is actually a bit similar to choosing items in daily life, the more expensive must have its superiority in terms of quality, and the cheaper ones do not affect the use of function, in short, according to one’s ability. Currently, there are three main types of restorations for missing teeth: implants, fixed restorations, and active restorations. The so-called dental implants is in the place of missing teeth with a surgical method will be a pre-made artificial titanium root implanted into the alveolar bone, and then on its basis to restore a complete tooth, this restoration method does not involve neighboring teeth, good stability, beautiful, for the current preferred restoration, the shortcomings are the need for surgery, high cost, long cycle. Fixed restoration, also called fixed bridge restoration, is by using the teeth on both sides of the missing teeth, the restoration (braces) fixed to the neighboring teeth, permanent bonding, comfort, aesthetics, stability and functional recovery, the shortcomings are the need to grind both sides of the teeth, there is a certain degree of damage, for the non-reversible restoration, the restoration of this type of dental implants in addition to the current is still the recommended method. The last one is activity restoration, also called activity denture, that is, the denture that needs to be taken off and worn frequently, generally when it is impossible to carry out fixed restoration, or choose to use it due to economic reasons, the activity denture has small requirements for grinding teeth, low cost, if it is unsatisfactory, it can also be fixed restoration, the disadvantage is unfavorable to clean, poor stability, poor functional recovery efficiency, metal hooks can affect the cosmetic effect, and prolonged use of the neighboring teeth may have some damage to the teeth. Neighboring teeth have some damage. Now clinically more mature new activity denture repair technology —- precision attachment repair, can improve the stability of the denture, aesthetic and avoid damage to neighboring teeth, the shortcomings are the need for several teeth connected to the fixed (do crown), the cost is higher. In addition to dental implants metal selection for pure titanium, a variety of other dentures have the difference between the metal material, such as fixed denture repair, porcelain part of no difference, but its inner metal braces have 5 to 6 kinds of metal to choose from, currently commonly used titanium alloy porcelain (containing titanium of about 4%, the rest of the nickel-cadmium alloy), pure titanium porcelain (containing titanium of about 90% or more), precious metal porcelain (gold and platinum alloy), zirconium oxide porcelain ), zirconia porcelain, etc., nickel, cadmium for heavy metal ions, harmful to the body, but dentures in the composition of less, is still allowed to be used in the human body, but easy to oxidize, heavy metal ions free, a certain degree of corrosive to the teeth, so the long-term effect is not as good as the precious metal alloys. Pure titanium and gold alloys are precious metals, good compatibility with the human body, the physical properties of the metal is stable, corrosion resistance, production precision, long-term effect. Zirconia porcelain is the newer restoration technology, white, hardness and aesthetics, suitable for cosmetic and functional restoration of anterior and posterior teeth, but the cost is expensive. In addition, the anterior teeth can also choose all-ceramic or cast porcelain restoration, good aesthetics, brittle, not suitable for posterior teeth restoration. The metal brackets of movable dentures are mainly cobalt chromium alloy, titanium alloy, pure titanium alloy and precious metal alloy at present, and the commonly used ones are titanium alloy and pure titanium metal bracket, the difference between them lies in the aspect of stability of the metal and compatibility with human body, and the pure titanium bracket is light in quality, comfortable and biocompatible. There are certain indications for the choice of dentures, and the choice of which type of denture to use requires a doctor’s decision. When the doctor offers several restorative suggestions, the patient is often required to consider whether he or she is willing to grind adjacent teeth and how much financial burden he or she can bear.