1. How to place teeth after tooth extraction—porcelain teeth: Traditional porcelain teeth are used to repair missing teeth using the principle of tooth dentures. It uses the natural teeth adjacent to the missing tooth, grinds them down and puts a porcelain bridge on them, so that there is a porcelain tooth without a root in the position of the missing tooth, but the appearance of the missing tooth can still be restored. After all, the missing teeth have no roots and are completely supported by the natural teeth on both sides, which increases the burden on the abutment teeth. In the long run, the abutment teeth will also be damaged, causing the porcelain bridge repair to fail. At that time, the repair plan must be reconsidered. . 2. How to place teeth after tooth extraction - dental implants: Dental implants eliminate the shortcomings of traditional porcelain tooth restorations. It is to place an implant on the alveolar bone of the missing tooth. After the artificial tooth root and the alveolar bone are integrated, a porcelain crown is installed to achieve the purpose of "rebirth of the missing tooth". The force-bearing principle of dental implants is the same as that of natural teeth. It transmits chewing pressure to the alveolar bone through the artificial tooth root. During chewing, the force is directly transmitted to the jawbone or to the jawbone through the implant, and is quickly transmitted and dispersed to the jawbone. The larger support is within the bone and can therefore withstand greater biting forces.