NCT07653802

Brief Summary

Crown lengthening is a clinical procedure that involves reshaping the gingiva, and sometimes bone, in order to expose more of tooth's structure. The procedures is performed for both functional and aesthetic reasons. In certain instances, this procedure is performed to This procedure is commonly performed for both functional and aesthetic reasons, such as to prepare a tooth for a crown or to enhance the appearance of a smile. Traditional crown lengthening techniques typically involve surgical methods that can be invasive, leading to extended recovery times and postoperative discomfort in this study we compare traditional versus the laser aided crown lengthening to compare the periodontal parameters in both cases.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
26

participants targeted

Target at below P25 for not_applicable

Timeline
3mo left

Started Jul 2025

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress77%
Jul 2025Sep 2026

Study Start

First participant enrolled

July 1, 2025

Completed
11 months until next milestone

First Submitted

Initial submission to the registry

June 10, 2026

Completed
7 days until next milestone

First Posted

Study publicly available on registry

June 17, 2026

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2026

Expected
29 days until next milestone

Study Completion

Last participant's last visit for all outcomes

September 30, 2026

Last Updated

June 17, 2026

Status Verified

June 1, 2026

Enrollment Period

1.2 years

First QC Date

June 10, 2026

Last Update Submit

June 16, 2026

Conditions

Crown LengtheningCrown Lengthening Procedure With OstectomyLaserPiezoelectric Technique

Keywords

crown lengthening

Outcome Measures

Primary Outcomes (2)

  • Postoperative Pain

    VAS 0-10

    baseline, 3 days

  • Postoperative pain

    VAS scale 0-10

    baseline 3 days

Secondary Outcomes (2)

  • Probing depth

    baseline, 3 months , 6 months

  • patient satisfaction VAS

    baseline, 3 days , 6 months

Study Arms (2)

crown lengthening using Er:YAG Laser

EXPERIMENTAL

Er:YAG laser is used for both soft and hard tissue recontouring according to the manufacturer's guidelines. In the case of gingivectomy and soft tissue recontouring, 4x17mm, 0.6x17mm, and 1.3x17mm tips are used, and the soft tissue mode is selected on the device screen, which sets the device parameters to 100mJ x 20Hz. The tip is in direct contact with the soft tissue until the desired soft tissue level is achieved. For bone contouring, the hard tissue option is selected on the device's screen, setting the parameters to 150mJ x 20Hz. A non-contact approach is used to reshape the underlying bone.

Procedure: crown lengthening using Er:YAG Laser

: conventional surgical crown lengthening by opening envelop flap

ACTIVE COMPARATOR

Bevel incision with number 15 blades is place on the margin following with sulcular incision and excess gingival tissues are removed using Gracey currets .in case if any granulation tissues are seen it should be removed and washed with saline. Following with bone recontouring and reshaping after periosteal elevator is used to expose the underlying bone. fissure burs or coarse diamond stones are used until thing bone tissues are left over the root and rest can be removed with scaler to prevent damage to the tooth. Resorbable sutures are place after the surgery and the case is followed up for 3 months period. In the case of conventional surgical crown lengthening, after delivering the local anesthetic solution to the surgical area, soft tissue recontouring starts. This procedure, which involves excising the soft tissue with a gingivectomy, is typically done to improve aesthetics or create more space for better restoration seating. The gingival border is typically 1 mm coronal to the CEJ

Procedure: conventional surgical crown lengthening by opening envelop flap

Interventions

conventional surgical crown lengthening by opening envelop flapPROCEDURE

Bevel incision with number 15 blades is place on the margin following with sulcular incision and excess gingival tissues are removed using Gracey currets .in case if any granulation tissues are seen it should be removed and washed with saline. Following with bone recontouring and reshaping after periosteal elevator is used to expose the underlying bone. fissure burs or coarse diamond stones are used until thing bone tissues are left over the root and rest can be removed with scaler to prevent damage to the tooth. Resorbable sutures are place after the surgery and the case is followed up for 3 months period. In the case of conventional surgical crown lengthening, after delivering the local anesthetic solution to the surgical area, soft tissue recontouring starts. This procedure, which involves excising the soft tissue with a gingivectomy, is typically done to improve aesthetics or create more space for better restoration seating. The gingival border is typically 1 mm coronal to the CEJ.

: conventional surgical crown lengthening by opening envelop flap
crown lengthening using Er:YAG LaserPROCEDURE

Er:YAG laser is used for both soft and hard tissue recontouring according to the manufacturer's guidelines. In the case of gingivectomy and soft tissue recontouring, 4x17mm, 0.6x17mm, and 1.3x17mm tips are used, and the soft tissue mode is selected on the device screen, which sets the device parameters to 100mJ x 20Hz. The tip is in direct contact with the soft tissue until the desired soft tissue level is achieved. For bone contouring, the hard tissue option is selected on the device's screen, setting the parameters to 150mJ x 20Hz. A non-contact approach is used to reshape the underlying bone.

crown lengthening using Er:YAG Laser

Eligibility Criteria

Age20 Years - 70 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Teeth indicated for crown lengthening procedure either in the maxillary or mandibular arch.
  • Patients in the age group of 18-75 years.

You may not qualify if:

  • Smokers (considered as smoking ≥ 10 cigarettes/day)
  • Pregnant women
  • Patients with uncontrolled systemic diseases that may affect the healing of soft and hard tissues of the periodontium will be excluded.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Gulf Medical University

Ajman, Ajman Emirate, 00000, United Arab Emirates

RECRUITING

Central Study Contacts

Nesma Shemais

CONTACT

0529961988dr.nesma@gmu.ac.ae

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 10, 2026

First Posted

June 17, 2026

Study Start

July 1, 2025

Primary Completion (Estimated)

September 1, 2026

Study Completion (Estimated)

September 30, 2026

Last Updated

June 17, 2026

Record last verified: 2026-06

Locations

AE(1)