Teeth as chewing organs in the mouth in the human life plays a fairly important role, can not be easily pulled out, the root of the tooth is also the same can not be easily pulled out, so what is the value of the root of the teeth in the oral cavity? We all have such life experience in eating fish, even very small splinters we can sense, in the lips and cheeks, tongue with the cooperation of it spit it out, and then there is rice even very tiny sand, our teeth can feel gritty, we can eat out of the noodles strong or not, steamed bread there is no chewy. All of these are the role of the nerve receptors on the root of the tooth, which can prevent us from eating foreign objects into the stomach, and at the same time to prevent hard objects bad teeth itself, so in the preservation of the root of the tooth on the restoration of dentures not only beautiful appearance but also retain the natural roots of these perceptual capabilities. In addition, we all know that there is a law of use and waste in human organs, the preserved tooth root can produce moderate physiological stimulation to the alveolar bone around it when chewing food in the oral cavity, thus avoiding alveolar bone resorption, degradation and atrophy. There are also retained tooth roots that can provide support and anchorage for dentures. So why do we pay to suffer the pain of tooth extraction. Therefore, I advise you to be careful when extracting teeth. On the retained, well-treated roots, we can create aesthetic and comfortable porcelain dentures, as well as overdentures and attachment dentures for high chewing efficiency.