Completed

Evaluation of Pain Following Microsurgical Esthetic Crown Lengthening Using Flap Vs. Flapless Piezo-surgical Approach: A Randomized Controlled Clinical Trial

0 criteria met from your profileSee at a glance how your profile meets each eligibility criteria.
What is being tested

Tunneling micro-surgical crown lengthening approach using piezo-surgery

+ Micro-surgical crown lengthening approach using Piezosurgery

Procedure
Who is being recruted

Neurologic Manifestations+4

+ Pain

+ Pain, Postoperative

Over 18 Years
+14 Eligibility Criteria
See all eligibility criteria
How is the trial designed

Treatment Study

Interventional
Study Start: September 2020
See protocol details

Summary

Principal SponsorCairo University
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: September 6, 2020

Actual date on which the first participant was enrolled.

The conventional approach: Anesthesia will be given followed by bone sounding using William graduated periodontal probe and measuring the pocket depth (using magnification loupes and microsurgical blades) * Marking the bleeding points * An internal bevel incision is made followed afterwards by a sulcular incision. * The gingival collar is eliminated. * Elevation of the flap is proceeded to allow access for osteoplasty using piezo surgery and an apical position of the bone 2-3mm beyond CEJ. * Mattress suture (6.0) is made The intervention approach: Surgery is done the same as in the conventional approach but without opening a flap, gaining access via a tunneling instrument and piezo tips for osteoplasty

Official TitleEvaluation of Pain Following Microsurgical Esthetic Crown Lengthening Using Flap Vs. Flapless Piezo-surgical Approach: A Randomized Controlled Clinical Trial
NCT04401826
Principal SponsorCairo University
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

24 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Neurologic ManifestationsPainPain, PostoperativePathologic ProcessesPostoperative ComplicationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Criteria

9 inclusion criteria required to participate
Patients provides an informed consent.

Adult patients ˃ 18 years old.

Absence of sites with attachment loss and probing depth (PD) >3 mm.

The presence of the six upper anterior teeth.

Show More Criteria

5 exclusion criteria prevent from participating
Extensive restorations

Presence of prosthetic crowns

Pregnant females

Extensive incisal edge attrition.

Show More Criteria

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Active Comparator
Conventionnal ECL with tunneling using piezosurgery and microsurgical tools

Group II

Experimental
Conventionnal ECL using piezosurgery and microsurgical tools

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

Faculty of Oral and Dental Medecine-CU

Cairo, EgyptOpen Faculty of Oral and Dental Medecine-CU in Google Maps
CompletedOne Study Center
Evaluation of Pain Following Microsurgical Esthetic Crown Lengthening Using Flap Vs. Flapless Piezo-surgical Approach: A Randomized Controlled Clinical Trial | PatLynk