Clinical Trial of the Effect of Different Categories of Adhesive System

April 25, 2016 updated by: Issis luque, Universidad de Valparaiso

Randomized Clinical Trial of the Effect of Different Categories of Adhesive System

This study aims to evaluate the clinical effectiveness of contemporary resin-based adhesive systems by retention rate of resin restorations placed in non carious cervical lesions with four different adhesive strategies: 3 and 2 steps etch-and-rinse adhesive system, 2 and 1 step self-etch adhesive systems.

Study Overview

Detailed Description

The etch-and-rinse (3 and 2 steps) and self-etch (1 and 2 steps) adhesive systems allow the bond between the resins restorations with the dental substrates, but they have mechanism of action different.

The success of resin composite restorations is reliant upon adhesion to the underlying tooth via adhesive systems. The mechanism of adhesion to enamel and dentine could be involved for one hand, the etching the substrates with 30-40% phosphoric acid, followed by the application of a primer and subsequently an adhesive resin 3 steps etch-and- rinse approach or 2 steps when to combine the primer and adhesive into one bottle. For another hand, the self- etch systems with acid monomers in their primer, allow conditioning the surface without phosphoric acid step. So, they consist of either a self-etching primer accompanied by an adhesive resin applied as a subsequent step (2 steps) or a self-etch adhesive, which does not require a separate primer (1 step).

Study Type

Interventional

Enrollment (Anticipated)

185

Phase

  • Phase 2

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

    • V region
      • Valparaiso, V region, Chile, 2360004
        • Universidad Valparaiso

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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Good general health,
  • Patients with acceptable oral hygiene level,
  • Patients with at least 20 teeth under occlusion.
  • Patients with at least four non-carious cervical lesions in four different teeth
  • Patients with maximum of eight lesions that needed to be restored.
  • These lesions had to be non-carious, non-retentive, deeper than 1 mm, and involve both the enamel and dentin of vital teeth without mobility.

Exclusion Criteria:

  • Patients with extremely poor oral hygiene,
  • Patients with severe or chronic periodontitis,
  • Patients with heavy bruxism habits.

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: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: 3 step ER & Dental restoration
Dental restoration with etching the dental substrates 35% phosphoric acid, followed by the application of a primer and subsequently an adhesive resin.
Methacrylate resins will be used to complement the cavity restoration after of adhesive procedure
Other Names:
  • Dental resin restoration
Enamel and dentin will be conditioning with 35% phosphoric acid, then applied primer, and then applied adhesive resin.
Experimental: 2 step ER & Dental restoration
Dental restoration with etching the dental substrates 35% phosphoric acid, followed by the application of an adhesive/primer step.
Methacrylate resins will be used to complement the cavity restoration after of adhesive procedure
Other Names:
  • Dental resin restoration
Enamel and dentin will be conditioning with 35% of phosphoric acid, then applied primer/adhesive resin.
Active Comparator: 2 step SE & Dental restoration
Dental restoration with etching the dental substrates with acidic primer, followed by the application of adhesive resin.
Methacrylate resins will be used to complement the cavity restoration after of adhesive procedure
Other Names:
  • Dental resin restoration
Enamel and dentin will be conditioning with acidic primer, then applied primer/adhesive resin.
Experimental: 1 step SE & Dental restoration
Dental restoration with etching and infiltrate the dental substrates with acidic primer/adhesive system.
Methacrylate resins will be used to complement the cavity restoration after of adhesive procedure
Other Names:
  • Dental resin restoration
Enamel and dentin will be conditioning with acidic primer/adhesive resin.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Secondary caries
Time Frame: one year
Secondary caries near and/or associated of the dental restorations
one year
Retention rate
Time Frame: one year
retention rate of the dental restorations
one year

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Marginal integrity
Time Frame: one year
marginal integrity of the dental restorations
one year
Marginal discoloration
Time Frame: one year
Marginal discoloration of the dental restorations
one year
post-operative sensitivity
Time Frame: one year
dentin post-operative sensitivity
one year

Collaborators and Investigators

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

Investigators

  • Principal Investigator: Issis Luque, professor, Pontificia Universidad Católica de Chile

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

April 1, 2014

Primary Completion (Anticipated)

May 1, 2016

Study Completion (Anticipated)

April 1, 2018

Study Registration Dates

First Submitted

April 21, 2016

First Submitted That Met QC Criteria

April 25, 2016

First Posted (Estimate)

April 26, 2016

Study Record Updates

Last Update Posted (Estimate)

April 26, 2016

Last Update Submitted That Met QC Criteria

April 25, 2016

Last Verified

April 1, 2016

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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.

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