Evaluation of Pain Following Microsurgical Esthetic Crown Lengthening Using Flap Vs. Flapless Piezo-surgical Approach: A Randomized Controlled Clinical Trial

The conventional approach: Anesthesia will be given followed by bone sounding using William graduated periodontal probe and measuring the pocket depth (using magnification loupes and microsurgical blades) * Marking the bleeding points * An internal bevel incision is made followed afterwards by a sulcular incision. * The gingival collar is eliminated. * Elevation of the flap is proceeded to allow access for osteoplasty using piezo surgery and an apical position of the bone 2-3mm beyond CEJ. * Mattress suture (6.0) is made The intervention approach: Surgery is done the same as in the conventional approach but without opening a flap, gaining access via a tunneling instrument and piezo tips for osteoplasty