What is the principle of porcelain dental design? Usually when a tooth is missing, you also lose the jaw force of one tooth. The jaw force lost by this tooth needs to be equally divided between the two teeth next to it. That is, the teeth on both sides of the missing tooth need to be restored by tooth reduction to make a group of three teeth-based porcelain bridges in the form of bridging. This is to obtain the best retention effect, of course, in some cases, missing a tooth can also do two, but do three, then you can achieve the best effect of the balance of forces. Many patients with missing teeth to dental institutions to do porcelain restoration, for the dentist mentioned the lack of a tooth need to do three porcelain teeth, they are very confused “Why I am just missing a tooth, but need to let me do three porcelain teeth?” This is the design principle of why three porcelain teeth are needed for one missing tooth. Of course, with the continuous development of dental technology, with the clinical application of dental implant technology, if dental implant restoration is done, only a single porcelain tooth can be done after staking, not two or three, and there is no need to grind the adjacent tooth tissue. However, the cost of dental implants is relatively expensive, and the restoration period is long, usually about 4-6 months, so dental implants are not popularly used in dental clinics.