We often say that the denture is not simply put in the mouth and done, but to restore the chewing function, the normal oral tissues such as gums, adjacent teeth, mucosa without any adverse stimulation before, if the denture function always pain and other discomfort, then the denture installed is not a success. Therefore, in order to install the denture can be good, comfortable, dental implants must be dealt with before the oral cavity in some of the remaining problems, to create a good environment for dental implants, general dental implants before the need to do the following aspects of work: 1, the treatment of the residual root and crown: can retain the teeth for root canal treatment, can not retain the teeth extracted. 2.Processing of periodontal gums: For patients who have not scaled their teeth for more than half a year, poor oral hygiene and inflammation of gum bleeding, basic periodontal treatment should be carried out first, including supragingival scaling (scaling) and subgingival scaling. 3.Treatment of tooth decay: when you look at the mirror, you can often see the small discolored hole on the tooth surface, that is the decay, and you need to pass the filling treatment (filling) before setting the tooth. 4.If there are ulcers or other lesions in the oral mucosa, it needs to be controlled well before setting teeth. 5.If there is any bony protrusion in the mouth that affects the position of dentures, surgical removal may be needed. 6.It is best to take intra-oral X-ray before veneering, so that the doctor can assess the health of the remaining teeth and reasonably design the retention device of the denture.