1.Why do I need crown lengthening? Crown lengthening was first used to repair split roots. Some roots split below the gum after splitting, and if such roots are retained, a gingivectomy (crown lengthening) is needed to expose the broken surface due to the stimulation of the gum by traditional restorative materials and the inappropriateness of taking impressions of the gum cover. Nowadays, crown lengthening is mostly a cosmetic procedure and generally refers to two types of crown lengthening, one being a crown that is too short and has poor aesthetics. There is also a case where the gums are exposed too much when smiling and the crown lengthening procedure is used to lift the gums. There is one case that must be mentioned, although many doctors strongly discourage it, but there are many followers of taking porcelain teeth to repair the misalignment of individual teeth. This is where crown lengthening can often come in handy, as misaligned teeth are inevitably accompanied by unattractive curved gums. Trimming the gums before getting porcelain teeth will undoubtedly bring more satisfactory results. 2.How should crown lengthening be done? The earliest exposed tooth roots were only cut gums, later found that only cutting gums vowed to cause the gums to crawl back after surgery, so later surgery were de-bone. Only when the gums lose their bone support will they not crawl back. Generally, the gum is cut first (internal oblique incision), the curve of the gum is trimmed, then the mucoperiosteal flap is opened and the bone is removed with a ball drill, and the amount of gum removed above is followed by the amount of bone removed below. Finally, the suture is trimmed. The gingival cutting periodontal plugging agent without flap has a good hemostatic effect, and the flap must be sutured. 3. What is the procedure for crown lengthening? For the first time, the procedure takes about 15-30 minutes for each tooth, and the speed varies from doctor to doctor. The stitches will be removed after one week. After 6 to 8 weeks, you can have porcelain teeth as normal. 4. Who should do the crown lengthening procedure? Traditionally, it should be done by a periodontist (the doctor who often scales the teeth) or a maxillofacial surgeon (the doctor who is good at extracting teeth). The prosthodontist (the one who does the porcelain) will need to make a guide to indicate where the gum needs to be cut. If the same surgeon performs the surgery and the porcelain, the guide can be omitted. Early surgery is not much doctor recommended to do the guide plate, skilled later can no longer do. 5.How much do you charge for crown lengthening? According to the data I have so far, the fee for crown lengthening of a tooth ranges from 150 to 2000. Different medical institutions and different doctors usually have different charges. Doctors with more experience charge more and those who do less charge less. You can choose according to your economic conditions and the materials used to make porcelain teeth.