Chlorhexidine as Coadjuvant in Dentin Adhesion of Noncarious Cervical Lesions

Chlorhexidine as Coadjuvant in Dentin Adhesion of Noncarious Cervical Lesions and Failure-prognostic Variables: A Randomized Controlled Trial

This study aims to evaluate the effect of chlorhexidine digluconate (CRX) application in etched dentin on the retention of noncarious cervical lesions restorations.

A randomized controlled split-mouth and blind trial will be carried out. Patients with at least two non-carious cervical lesions (NCL) will be selected. NCL will be randomly assigned according the type of teeth (incisors, canine or pre-molars) into two groups: control or experimental group (application of 2% CRX for 60 seconds after the acid etching procedure). Class V restorations will be performed out with an etch-and-rinse adhesive system (Adper Single Bond 2-3M ESPE) and a composite resin (Filtek Z350-3M ESPE) according the manufacture instructions, by previously trained operators. The restorations will be evaluated by a calibrate examiner at 1 week (baseline), and 6-month, 12-month and 24-month, using the World Dental Federation (FDI) criteria. The outcome is retention of the restoration.

Study Overview

• Status: Completed
• Conditions: Non-carious Cervical Lesions
• Intervention / Treatment: Procedure: Treatment with chlorhexidine; Procedure: Water pre-treatment

• Study Type: Interventional
• Enrollment (Actual): 50
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Brazil
  • RS
    • Pelotas, RS, Brazil, 96015-560
      • School of Dentistry, Federal University of Pelotas

Participation Criteria

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:

• Patients presenting at least two non-carious cervical lesions (NCL) in anterior, canine or pre-molars;
• Patients who had more than 20 teeth in the mouth;
• Patients who were at least 18 years of age at the time of treatment and capable to understand and sign the written informed consent;
• NCL with at least 1 mm of depth in a vital permanent incisor, canine or premolar of the upper as the lower jaw.
• NCL in the facial surface of the teeth with sometimes a small part extending interproximally;
• Patients with good periodontal heath.

Exclusion Criteria:

• Patients with smoking habits, practicing bruxism, severe systemic diseases, using active orthodontic treatment, malocclusion (Angle Class II or Class III);
• Tooth with the NCL with the absent of antagonist;
• NCL wear facets upper than 50% of the incisal/occlusion surface, as a result of tooth attrition;
• Presence of caries or restorations in the area to be treated;
• Full-mouth visible plaque index (VPI) or full-mouth gingival bleeding index upper than 20%, probing depth and clinical attachment loss values exceeding 4 mm with bleeding on probing;
• Unwillingness to return for follow-ups or refuse to participate.

Study Plan

How is the study designed?

Design Details

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

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Chlorhexidine; Dentin pre-treatment with a experimental solution (chlorhexidine), after the dentin acid etching	Procedure: Treatment with chlorhexidine; Application of 2% chlorhexidine digluconate (60 seconds) after the etching procedure and before the adhesive system.
Placebo Comparator: Water; Application of water (placebo) after dentin acid etching.	Procedure: Water pre-treatment; Treatment of acid etched dentin with sterilized water for 60 s before adhesive system application

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change from baseline in Retention rates of the restoration at 24 months	Patients will be reevaluated at each specified time point and all restoration sites will be evaluated to check if the restoration will be still in place, or if it is missing, or if there is partial retention	6, 12 and 24 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change from baseline in Post-operative sensitivity at 6-month	At each time-point, patients will be recalled and interviewed regarding any symptom related to each restorations placed.	baseline and 6-month
Change from baseline in marginal staining rates at 6. 12 and 24 months	At each time-point, patients will be recalled and restorations will be reassessed in order to record changes in the rates of marginal staining, using the World Dental Federation (FDI) criteria for restorations assessment (Hickel et al 2010).	6, 12 and 24 months

Collaborators and Investigators

• Sponsor: Federal University of Pelotas
• Investigators: Principal Investigator: Maximiliano Cenci, PhD, School of Dentistry-UFPel

Publications and helpful links

General Publications

• Hickel R, Peschke A, Tyas M, Mjor I, Bayne S, Peters M, Hiller KA, Randall R, Vanherle G, Heintze SD. FDI World Dental Federation: clinical criteria for the evaluation of direct and indirect restorations-update and clinical examples. Clin Oral Investig. 2010 Aug;14(4):349-66. doi: 10.1007/s00784-010-0432-8. Epub 2010 Jul 14.

Study record dates

Study Major Dates

• Study Start: November 1, 2011
• Primary Completion (Actual): November 1, 2012

Study Registration Dates

• First Submitted: August 15, 2013
• First Submitted That Met QC Criteria: September 17, 2013
• First Posted (Estimate): September 20, 2013

Study Record Updates

• Last Update Posted (Estimate): February 24, 2016
• Last Update Submitted That Met QC Criteria: February 23, 2016
• Last Verified: February 1, 2016

More Information

Terms related to this study

• Keywords: Chlorhexidine; Controlled clinical trial; Adhesive system; Dental restoration; Noncarious cervical lesions; Dental restoration failure; Matrix metalloproteinases (MMP) inhibitor
• Additional Relevant MeSH Terms: Uterine Diseases; Uterine Cervical Diseases; Anti-Infective Agents, Local; Anti-Infective Agents; Disinfectants; Chlorhexidine
• Other Study ID Numbers: PPGO0017