Low-intensity Laser Therapy in the Treatment of Gingival Recession (LILT)

April 17, 2014 updated by: Mauro Pedrine Santamaria, UPECLIN HC FM Botucatu Unesp

Connective Tissue Graft Associated or Not With Low Intensity Laser Therapy: A Randomized Clinical Trial

The purpose of this study was to evaluate the 6-month outcomes of applying low-intensity laser therapy associated with connective tissue grafts to treat gingival recession.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This was a prospective, parallel and controlled clinical trial. The population evaluated in this study was selected at ICT - São José dos Campos, College of Dentistry.

The selected patients were randomly allocated (by a computer generated list) into:

Group CTG (n = 20) - patients who received connective tissue graft to treat gingival recession Group CTG+LILT (n = 20) - patients who received connective tissue graft associated with 8 applications of low-intensity laser therapy to treat gingival recession.

The surgeries, as well as all postoperative follow-up, were performed at the dental clinic of ICT- UNESP. Surgical areas were anesthetized (2% mepivacaine with 1:100,000 epinephrine). Two horizontal incisions were made at right angles to the adjacent interdental papillae, at the level of the CEJ, without interfering with the gingival margins of neighboring teeth. Two oblique vertical incisions were extended beyond the mucogingival junction, and a trapezoidal mucoperiosteal flap was raised up to the mucogingival junction. After this point, a split-thickness flap was extended apically, releasing the tension and favoring coronal positioning of the flap. The exposed root surface was gently scaled and planed to remove any possible irregularities. Afterward, a thin and small connective tissue graft was harvested from the palate using a scalpel with parallel blades (1.0 mm away from each other). The graft was sutured# using single sutures in the papillae, over the root surface, in such a way that covered the CEJ and the recession. Then, the flap was coronally positioned and sutured to completely cover the graft The patients allocated for the test group received the following protocol for laser application: Five (5) points of irradiation were performed, as depicted in Figure 1. The irradiation was performed with a GaAlAs** diode laser that continuously emitted a wavelength of 660 nm. 30 mW was used for 20 seconds, and the total applied energy density (fluence) was 15 J/cm2 (3 J/cm2 per point and an application time of 4 seconds per point)

Clinical parameters were assessed at baseline and 3 and 6 months post-operatively.

Statistical Analysis The null hypothesis considered in the study was the absence of difference in the clinical parameters between the different groups. For data analysis, the statistical program was used (Sigmaplot). The demographic and clinical data were compared between the groups using Student's t-test. The data were first analyzed for homogeneity using the Shapiro-Wilk test, which indicated non-normal distribution. . Those presenting Shapiro-Wilk p values < 0.05 were analyzed using a Friedman test (for intragroup comparisons) and Mann-Whitney tests (for intergroup comparisons). Patients' esthetics and discomfort measures using VAS were analyzed by T-tests. The frequency of sites that were scored as very good or excellent in each group by QCE analysis, the frequency of complete root coverage, BOP, and the presence or absence of plaque at the site were compared using χ2 tests. Intergroup RES comparisons were performed with a T-test. A significance level of 0.05 was adopted.

Study Type

Interventional

Enrollment (Actual)

40

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Brazil
    • São Paulo
      • São José dos Campos, São Paulo, Brazil, 12243-300
        • UNESP - ICT Odontologia São José dos Campos

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. presenting Miller class I or II gingival recession in the maxillary canines or premolars;
  2. visible cemento-enamel junction (CEJ) in the teeth included in the study and pulp vitality;
  3. patients presenting no signs of active periodontal disease and full-mouth plaque and bleeding score ≤ 20%;
  4. patients older than 18 years old;
  5. probing depth ˂ 3 mm in the included teeth; 6) patients who agreed to participate and signed an informed consent form

Exclusion Criteria:

  1. patients with systemic problems (cardiovascular, blood dyscrasias, immunodeficiency, and diabetes, among others) that will contraindicate the surgical procedure
  2. patients taking medications known to interfere with the wound healing process or that contraindicate the surgical procedure
  3. smokers or pregnant women
  4. patients who underwent periodontal surgery in the area of interest; and 5) patients with orthodontic therapy in progress.

Study Plan

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

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Sham Comparator: Connective tissue graft (CTG)
The gingival recession defects were treated by connective tissue graft surgical procedure and received the sham application os low-intensity laser therapy.
Procedure: Connective tissue graft
Periodontal surgical technique to treat gingival recessions
Experimental: Connective tissue graft plus laser (CTG+L)
The gingival recession defects were treated by connective tissue graft associated with the application of a LILT protocol
Procedure: Connective tissue graft
Periodontal surgical technique to treat gingival recessions

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Percentage of root coverage
Time Frame: 6 months
6 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Esthetic
Time Frame: 6 months

Two esthetic evaluations were performed: 1 professional and 1 patient-centered. The professional esthetic evaluation was made using the photographs of the baseline and 6 months after surgery set in a before-and-after panel. The professional evaluation was conducted using the root coverage esthetic score (RES).

Esthetic outcomes were also evaluated from the patient's point of view. Using a hand mirror, the patients viewed the gingival recession before and after 6 months and were asked to rate the esthetics of the tooth included in the study on a VAS scale.
6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

UPECLIN HC FM Botucatu Unesp

Investigators

  • Study Chair: Stephanie B Fernandes-Dias, DDS, Ms, UPECLIN HC FM Botucatu Unesp
  • Study Chair: Maria Aparecida N Jardini, PhD, UPECLIN HC FM Botucatu Unesp

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

October 1, 2011

Primary Completion (Actual)

December 1, 2013

Study Completion (Actual)

January 1, 2014

Study Registration Dates

First Submitted

April 16, 2014

First Submitted That Met QC Criteria

April 17, 2014

First Posted (Estimate)

April 21, 2014

Study Record Updates

Last Update Posted (Estimate)

April 21, 2014

Last Update Submitted That Met QC Criteria

April 17, 2014

Last Verified

April 1, 2014

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 0978412.5.0000.0077

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Gingival Recession

Clinical Trials on Connective tissue graft

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Peru

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe