Laser-Assisted Minimally Invasive Esthetic Crown Lengthening Using Flapless vs. Tunneled Flap Approach

NCT07649226 | Enrolling By Invitation

• 1 other identifier: 9296348
• Study Type: interventional
• Target: 45
• Locations: 1 country
• Sites: 1

Brief Summary

Crown lengthening surgery is one of the most commonly performed periodontal procedures. Multiple techniques have been used throughout the years to overcome the postoperative pain and adverse outcomes that may be associated with surgical crown lengthening. One of the most popular choices among clinicians is using different types of lasers in different techniques to overcome those adverse effects. Treatment effectiveness can be monitored non-invasively through salivary levels of Leukocyte Esterase enzyme and the stability clinical outcomes.

Conditions

Altered Passive Eruption of Teeth

Keywords

altered passive eruption; periodontology; leukocyte esterase; esthetic crown lengthening

Outcome Measures

Primary Outcomes (3)

• leukocyte esterase enzyme assessment using Periomonitor

  Periomonitor strips will be used to detect the amount of leukocyte esterase enzyme in saliva

  1 month

• Clinical outcome stability

  Clinical outcome stability will be assessed by measuring the length of the crown and interdental papillae immediately postoperatively, 1 week postoperatively, 1 month postoperatively, 3 months postoperatively and 6 months postoperatively.

  6 months

• PROM

  Binary questionnaire (Yes/No) questions will be asked.

  1 week

Secondary Outcomes (1)

• Marginal bone loss evaluated using CBCT

  6 months

Study Arms (3)

conventional surgical crown lenhthening

ACTIVE COMPARATOR

gold standard of treatment

Procedure: surgical esthetic crown lengthening

Laser assissted flapless approach

ACTIVE COMPARATOR

Procedure: laser assissted crown lengthening

Tunneled flap approach

ACTIVE COMPARATOR

Procedure: Laser-assisted tunneled flap approach

Interventions

laser assissted crown lengthening PROCEDURE

laser-assissted flapless crown lengthening and laser-assissted tunneled flap approach

Laser assissted flapless approach

surgical esthetic crown lengthening PROCEDURE

surgical crown lengthening using scalpels and rotary instruments.

conventional surgical crown lenhthening

Laser-assisted tunneled flap approach PROCEDURE

In this approach, the gingival margin will be tunneled to provide visibility for the operator during bone removal using laser.

Tunneled flap approach

Eligibility Criteria

• Age: 21 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Patients with an excessive gingival display of at least 3 mm
• Age \>21 years
• At least six anterior maxillary teeth requiring ECL
• Healthy periodontal status, indicated by a full-mouth plaque index and bleeding on probing index scores of \<15%.
• Patients with thick gingival phenotype

You may not qualify if:

• Treatment sites with probing depths more than 3 mm
• Patients with a history of smoking
• Patients with a history of mucogingival surgery in the intended treatment area
• Systemic conditions that could hinder tissue healing (e.g., uncontrolled diabetes and autoimmune diseases)
• Patients undergoing active orthodontic treatment
• Presence of any cause of excessive gingival display other than altered passive eruption

Sponsors & Collaborators

• Alexandria University: lead

Study Sites (1)

Alexandria University

Alexandria, Alexandria Governorate, Egypt

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: June 4, 2026
• First Posted: June 16, 2026
• Study Start: March 30, 2026
• Primary Completion: June 1, 2026
• Study Completion: September 1, 2026
• Last Updated: June 16, 2026

Record last verified: 2026-03

Data Sharing

• IPD Sharing: Will not share

Locations

EG (1)