Before the crown lengthening, your dentist will perform an analysis to determine the new length of your gum line. They will also assess the teeth, gums, and surrounding structures to learn how best to proceed and ensure that the surgery will go smoothly. This usually involves reviewing your dental records and X-rays.
Your periodontist may also schedule you for a hygiene appointment. This appointment will ensure that your teeth and gums are as clean as possible to prevent any bacteria, plaque, or tartar from interfering with the procedure or causing an infection.
In some cases, your periodontist may fit you with a temporary crown. This will help protect your tooth before the procedure and allow them to see how a crown may fit after your lengthening.
For the procedure, your periodontist or dentist typically uses a combination of local anesthesia and a sedative. Then, they will use a scalpel, a laser, or both depending on the nature of your surgery. The amount of time your crown lengthening takes will vary depending on how many teeth are being treated. It will also depend on whether tissue and bone need to be shaved down.
There are three different kinds of crown lengthening procedures:
Gingivectomy
A gingivectomy removes gum tissue using a scalpel, a laser, or electrocautery. The patient is given a local anesthetic for this. Healing from a gingivectomy is relatively quick. Following the procedure, any discomfort or pain only lasts a few days to a week, with a full recovery typically within four to six weeks.
Apically Repositioned Flap
This procedure involves making an incision in the gum line to create a flap of tissue. Then, the periodontal surgeon removes excess tissue and possibly bone from within the flap. Once this is done, the flap is repositioned toward the tooth's root and held in place with stitches as it heals.
Surgical Extrusion
For a surgical extrusion, your periodontist will move the tooth to the desired position in the gum line. This method is typically used when a tooth fractures below the gum line. To stabilize the tooth, the periodontist may use stitches. They may also use a wire or a splint to anchor the tooth to the surrounding teeth.