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

Laser-Assisted Minimally Invasive Esthetic Crown Lengthening Using Flapless vs. Tunneled Flap Approach (Randomized Controlled Clinical Trial)

Status

Enrolling by invitation

Phases

Unknown

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT07649226

Enrollment

Registered

2026-06-16

Start date

2026-03-30

Completion date

2026-09-01

Last updated

2026-06-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Altered Passive Eruption of Teeth

Keywords

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

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.

Interventions

PROCEDURElaser assissted crown lengthening

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

PROCEDUREsurgical esthetic crown lengthening

surgical crown lengthening using scalpels and rotary instruments.

PROCEDURELaser-assisted tunneled flap approach

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

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

DOUBLE (Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

21 Years to No maximum

Healthy volunteers

Inclusion criteria

1. Patients with an excessive gingival display of at least 3 mm 2. Age \>21 years 3. At least six anterior maxillary teeth requiring ECL 4. Healthy periodontal status, indicated by a full-mouth plaque index and bleeding on probing index scores of \<15%. 5. Patients with thick gingival phenotype

Exclusion criteria

1. Treatment sites with probing depths more than 3 mm 2. Patients with a history of smoking 3. Patients with a history of mucogingival surgery in the intended treatment area 4. Systemic conditions that could hinder tissue healing (e.g., uncontrolled diabetes and autoimmune diseases) 5. Patients undergoing active orthodontic treatment 6. Presence of any cause of excessive gingival display other than altered passive eruption

Design outcomes

Primary

Measure	Time frame	Description
leukocyte esterase enzyme assessment using Periomonitor	1 month	Periomonitor strips will be used to detect the amount of leukocyte esterase enzyme in saliva
Clinical outcome stability	6 months	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.
PROM	1 week	Binary questionnaire (Yes/No) questions will be asked.

Secondary

Measure	Time frame
Marginal bone loss evaluated using CBCT	6 months

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 17, 2026