Sometimes the dentist will have to do a crown lengthening. This happens when the damage to the tooth has already reached quite close to the gum line. When we lengthen the crown, it means the dentist needs to remove a portion of the gum to reveal more of the tooth and sometimes some of the bone. The gives enough tooth exposed in order to make capping the tooth possible. The crown needs to have enough tooth exposed to give the cap room to make a seal and hold on the tooth abutment properly.
The procedure takes up to an hour, and since the mouth is numbed by local anesthesia, there is no pain. After the procedure, there will be minimal soreness for a couple of days. It usually takes a few weeks for the gum to heal before the next step of taking impressions for a permanent crown.
In some instances, the periodontist will do a crown lengthening for cosmetic purposes. Some people have excessive gum tissue over their teeth. When they smile, the gum is more pronounced than the teeth, or sometimes the gum is uneven. By removing excessive gum tissue, a nice smile could be created.