Comparison Between Lip Repositioning and Muscle Traction Technique in Treatment of Gummy Smile
NCT ID: NCT07285343
Last Updated: 2025-12-16
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
COMPLETED
NA
20 participants
INTERVENTIONAL
2023-03-01
2025-03-01
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
The main question it aims to answer:
Which of these treatment modalities (conventional lip repositioning and containment of the elevator muscle of the upper lip and wing of nose (EMULWN)) has the most durable and least relapse in the treatment of gummy smile?"
Researchers will compare:
1. The primary outcome was the decrease in excessive gingival display by measuring smile line (gingival display) and smile index before and after treatment modalities.
2. The The secondary outcome was to measure the durability and possibility of relapse over 6 months after treatment with high patient satisfaction.
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
lip repositioning
lip repositioning to treat excessive gingival display
lip repositioning
Local anesthesia was administered in the vestibular mucosa. A partial-thickness incision was made at the mucogingival junction from the mesial line angle of the right first molar to the mesial line angle of the left first molar. A second partial- thickness incision, parallel to the first, was made in the labial mucosa, 10 to 12 mm apical to the mucogingival junction. The incisions were connected at each first molar, creating an elliptical outline. The epithelium was removed within the outline of the incisions, leaving the underlying connective tissue exposed. Care was taken to avoid damage to any minor salivary glands in the submucosa. The parallel incision lines were approximated with interrupted stabilization sutures at the midline and other locations along the borders of the incision to ensure proper alignment of the lip midline with the midline of the teeth. Then, a continuous interlocking suture was used to approximate both flap ends.
Containment of the elevator muscle of the upper lip and wing of nose (EMULWN)
Containment of the elevator muscle of the upper lip and wing of nose (EMULWN) technique in treatment of excessive gingival display
Containment of the elevator muscle of the upper lip and wing of nose (EMULWN) technique
Local anesthesia was administered in the vestibular mucosa and lip then a vertical incision was made on the labial frenum, and two more horizontal incisions were made on the mucogingival line, starting from the frenum incision up to the height of the canines. The flap was carefully divulsed with Goldman Fox scissors and also a curved hemostat, separating the external epithelium from the muscle bundle mucosa on both sides at the height of the lateral incisors and canines. With an absorbable suture thread, the elevator muscle of the upper lip and wing of the nose was pulled downwards, repositioning its bundle nearer the highest portion of the keratinized gingiva. Simple sutures were made, as many as necessary, in order to contain the pulled muscle in this position. The procedure ended up with a continuous suture in the labial frenum and in the horizontal incisions with the use of a 4-0 silk suture thread. The external stitches should be removed in 10-15 days" time.
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
lip repositioning
Local anesthesia was administered in the vestibular mucosa. A partial-thickness incision was made at the mucogingival junction from the mesial line angle of the right first molar to the mesial line angle of the left first molar. A second partial- thickness incision, parallel to the first, was made in the labial mucosa, 10 to 12 mm apical to the mucogingival junction. The incisions were connected at each first molar, creating an elliptical outline. The epithelium was removed within the outline of the incisions, leaving the underlying connective tissue exposed. Care was taken to avoid damage to any minor salivary glands in the submucosa. The parallel incision lines were approximated with interrupted stabilization sutures at the midline and other locations along the borders of the incision to ensure proper alignment of the lip midline with the midline of the teeth. Then, a continuous interlocking suture was used to approximate both flap ends.
Containment of the elevator muscle of the upper lip and wing of nose (EMULWN) technique
Local anesthesia was administered in the vestibular mucosa and lip then a vertical incision was made on the labial frenum, and two more horizontal incisions were made on the mucogingival line, starting from the frenum incision up to the height of the canines. The flap was carefully divulsed with Goldman Fox scissors and also a curved hemostat, separating the external epithelium from the muscle bundle mucosa on both sides at the height of the lateral incisors and canines. With an absorbable suture thread, the elevator muscle of the upper lip and wing of the nose was pulled downwards, repositioning its bundle nearer the highest portion of the keratinized gingiva. Simple sutures were made, as many as necessary, in order to contain the pulled muscle in this position. The procedure ended up with a continuous suture in the labial frenum and in the horizontal incisions with the use of a 4-0 silk suture thread. The external stitches should be removed in 10-15 days" time.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
2. Gummy smile ranging between 4 and 6 mm, due to short upper lip and hyperactive lip elevator muscles (lip mobility \>8 mm).
3. Good periodontal health based on the examination of the gingival inflammation index, bleeding index, and probing the depth of gingival pockets.
4. Healthy patients or people with well-controlled systemic disease.
Exclusion Criteria
2. Pregnant or lactating women.
3. Less than 3 mm of attached gingiva that might create difficulties in flap design, stabilization, and suturing.
4. Vertical maxillary excess of more than 6 mm.
5. Poorly controlled systemic diseases that preclude local anesthesia.
6. Altered passive eruption, which needs gingivectomy or an apically positioned flap.
7. Skeletal causes of gummy smile as protruded maxilla.
18 Years
38 Years
ALL
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Suez Canal University
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Hany Kamel Shalaby, professor
Role: PRINCIPAL_INVESTIGATOR
Suez Canal University
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
Periodontology Clinic in Suez Canal University
Cairo, Egypt, Egypt
Periodontology Clinic in Suez Canal University
Ismailia, Ismailia Governorate, Egypt
Countries
Review the countries where the study has at least one active or historical site.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
240/2019 suez canal university
Identifier Type: -
Identifier Source: org_study_id