What should I look out for when doing a crown or bridge?

Why do I need anesthesia when I have a crown or bridge? The crown or bridge needs to have a certain thickness to achieve its best use effect, so the tooth needs to be ground once and the depth reaches the dentin. Before grinding active teeth, anesthesia is applied because the less sensitive enamel around the teeth needs to be almost completely ground away to expose the sensitive dentin. Grind your teeth so small that you even need a nerve pump? If the amount of tooth grinding is not enough, it is necessary to make the crown too large. At this time, it is not only unsightly, but also because of the improper shape, the plaque is easy to accumulate and it is difficult to clean. Some teeth that were originally sloping, overgrown or young patients tend to expose the pulp when grinding. When this happens, endodontic treatment is required, commonly known as nerve pumping. Does the edge of the crown have to penetrate deep into the gingival sulcus? Patients often think that wrapping the whole tooth is stronger or less prone to cavities. It has been confirmed that the quality of the crown and bridge does not depend on the position of the crown edge, but on the tightness of the edge and the difficulty of maintaining cleanliness. Easy or not. Therefore, unless it is for the aesthetics of the front teeth, to cover the old filling material or the defect of the tooth, only consider the edge deep into the gum. Otherwise, the dentist should keep the crown edge away from the gingiva, which is more beneficial to the maintenance of periodontal health.