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Accuracy of Stackable Double Periodontal Guide in Esthetic Crown Lengthening
Sponsor: Ain Shams University
Summary
The goal of this clinical trial is to find out if a new digital surgical guide helps dentists perform esthetic crown lengthening more accurately than the current digital guide in adults with a gummy smile caused by altered passive eruption. Esthetic crown lengthening is a procedure that reshapes the gums and the bone around the teeth to show more of the natural tooth. The main questions this study aims to answer are: Does the new digital guide help dentists reshape the bone and gums more accurately? Does the new digital guide improve healing, the appearance of the gums, the time needed for surgery, and participants' satisfaction with the results? Researchers will compare a new stackable digital guide with the current digital guide to see if the new design provides more accurate and predictable results. Participants will: * Be randomly assigned to have surgery using either the new digital guide or the current digital guide. * Have dental examinations, digital mouth scans, and three-dimensional dental X-rays before surgery to plan their treatment. * Have esthetic crown lengthening surgery using the assigned guide. * Return for follow-up visits right after surgery and again about 6 weeks and 6 months later so researchers can check healing and compare the planned treatment with the final result. * Answer questions about their satisfaction with the treatment and any pain medicine they used after surgery.
Official title: Accuracy of Stackable Double Periodontal Guide in Esthetic Crown Lengthening: (Randomized Controlled Clinical Trial)
Key Details
Gender
All
Age Range
21 Years - 60 Years
Study Type
INTERVENTIONAL
Enrollment
30
Start Date
2026-09
Completion Date
2028-09
Last Updated
2026-10-23
Healthy Volunteers
No
Interventions
Stackable double digital periodontal guide
A custom-made, 3D-printed digital surgical guide used during esthetic crown lengthening. The guide consists of two detachable components: a gingivectomy guide for soft tissue incision and an ostectomy guide that is joined after flap reflection and positioned directly on the alveolar bone to guide bone reduction. The guide is designed using merged cone-beam computed tomography (CBCT) and intraoral scan data to improve the accuracy of bone reshaping.
Conventional double digital periodontal guide
A custom-made, one-piece 3D-printed digital surgical guide used during esthetic crown lengthening. The guide directs both the gingivectomy and ostectomy based on the planned treatment using intraoral scan data . After flap reflection, the guide is repositioned to guide bone reduction from the soft tissue level.