Composite Resins Reconditioned, Behavior and Survival: Clinical Follow-up 10 Years (reacondcomp)

August 20, 2014 updated by: Eduardo Fernandez, University of Chile
The purpose of this study is to evaluate the clinical performance of resin composite restorations refurbished and compare with 2 groups of resins, 1 without treatment and another replaced resins acted as controls. The null hypothesis of this study is that the group of refurbished resins have a similar behavior to the control groups.

Study Overview

Status

Completed

Conditions

Detailed Description

A cohort of 26 patients aged 18-80 years old (mean: 28.35 years; 42% men, 58% women) with 78 composite restorations (Class I: 39; Class II: 39) were recruited at the Operative Dentistry Clinic at the Dental School of the University of Chile. All participants in the refurbishing groups showed clinical features for the anantomy, roughness and/or luster that deviated from the ideal and were rated Bravo according to the modified United States Public Health Service (USPHS) criteria. New Composites with Alpha values (Replacement group) and acceptable composites (No treatment group) were used as controls. The protocol was approved by the Institutional Research Ethics Committee of the Dental School at the University of Chile (Project PRI-ODO-0207). All patients signed informed-consent forms and completed registration forms

General Inclusion Criteria:

  • Patients with more than 20 teeth.
  • Restorations in functional occlusion, with an opposing natural tooth.
  • Asymptomatic restored tooth.
  • At least one proximal contact area with a neighboring tooth.
  • Patients older than 18 years.
  • Patients who agreed and signed a consent form for participating in the study.
  • Area outside of the restoration failure is in good condition.

General Exclusion Criteria:

  • Patients with contra-indications for regular dental treatment based on their medical history.
  • Patients with xerostomia or individuals taking medication that significantly decreased salivary flow.
  • Patients with a high risk of caries.
  • Patients with psychiatric or physical diseases, which interfered with oral hygiene.

Treatment Group Criteria Two hundred four patients were initially evaluated and assigned in accordance with the modified USPHS criteria,26 patients were selected based on the inclusion criteria with at least 1 Composite restoration with anatomy, roughness and/or luster (Bravo) suitable for reburbishing, with another composite restorations that had excellent values (Alpha) and was made at this time (Replacement group).And finally another composite pre-existing with acceptable condition (Alpha or Bravo values) acted as control. The patient was considered the statistical unit in this study (n=20).

Restoration Assessment The quality of the restorations was scored in accordance with the modified USPHS criteria. The Cohen Kappa inter-examiner coefficient was 0.74 in the first year and 0.87 after 10 years for two examiners (JM and EF) who underwent calibration training exercises each year. In the first, second, third, fourth, fifth, and tenth years, the examiners independently assessed the restorations for anatomic form, roughness, color, marginal staining,luster, secondary caries, marginal and marginal adaptation, both directly via tactile and visual examinations with mouth mirror number five and explorer number 23 (Hu Friedy Mfg. Co. Inc.) and indirectly by radiographic examination (bite wing). A third clinician (GM), who also underwent the calibration training exercises, made the final decision if a difference was recorded between the two examiners and they could not reach an agreement.

Treatment Groups Refurbishing For this group, The dentists finished the occlusal, lingual or facial surfaces of defective RBC restorations with the medium series of aluminum oxide disks (Sof-Lex,3M ESPE) or carbide burs (12 and 30 blades,Brasseler USA, Dental Instrumentation,Savannah, Ga.) and then polished them with afine series of aluminum oxide disks (Sof-Lex, 3M ESPE) and diamond-impregnated composite polisher (ComposiPro Diacomp, Brasseler). For restorations in which proximal surface areas were affected, the clinicians smoothed them with interproximal aluminum oxide finishing strips (Sof-Lex Finishing Strips, 3M ESPE).

Replacement group Composite resins with Alpha values for the marginal adaptation criteria were used as the positive control and were made with resin composite (Filtek Supreme, 3M ESPE), eith rubber dam isolation and the adhesive system L-Pop Prompt (3M-ESPE) No treatment Composite resin restorations (Z100, 3M ESPE) in general clinically acceptable, did not receive treatment.

Study Type

Observational

Enrollment (Actual)

25

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

  • Chile
      • Santiago, Chile, 7500505
        • Eduardo Fernandez Godoy

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

Sampling Method

Non-Probability Sample

Study Population

Any person with composite restorations

Description

Inclusion Criteria:

  • Patients with more than 20 teeth.
  • Restorations in functional occlusion, with an opposing natural tooth.
  • Asymptomatic restored tooth.
  • At least one proximal contact area with a neighboring tooth.
  • Patients older than 18 years.
  • Patients who agreed and signed a consent form for participating in the study.
  • Area outside of the restoration failure is in good condition.

Exclusion Criteria:

  • Patients with contra-indications for regular dental treatment based on their medical history.
  • Patients with xerostomia or individuals taking medication that significantly decreased salivary flow.
  • Patients with a high risk of caries.
  • Patients with psychiatric or physical diseases, which interfered with oral hygiene.

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

Cohorts and Interventions

Group / Cohort
Replacement
Composite resins with Alpha values for the marginal adaptation criteria were used as the positive control and were made with resin composite (Filtek Supreme, 3M ESPE), eith rubber dam isolation and the adhesive system L-Pop Prompt (3M-ESPE)
No treatment
Composite resin restorations (Z100, 3M ESPE) in general clinically acceptable, did not receive treatment.
Refurbishing
For this group, The dentists finished the occlusal, lingual or facial surfaces of defective RBC restorations with the medium series of aluminum oxide disks (Sof-Lex,3M ESPE) or carbide burs (12 and 30 blades,Brasseler USA, Dental Instrumentation,Savannah, Ga.) and then polished them with afine series of aluminum oxide disks (Sof-Lex, 3M ESPE) and diamond-impregnated composite polisher (ComposiPro Diacomp, Brasseler). For restorations in which proximal surface areas were affected, the clinicians smoothed them with interproximal aluminum oxide finishing strips (Sof-Lex Finishing Strips, 3M ESPE).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Changes in quality of restorations
Time Frame: 1 year
The quality of the restorations was scored according to the modified USPHS criteria. Two examiners underwent calibration exercises each year (JM and EF). Immediately after the treatment (baseline) and 10 years later, the examiners assessed the restorations independently by direct visual and tactile examination with mouth mirror number 5 and explorer number 23 (Hu Friedy Mfg. Co. Inc., Chicago, IL, USA) and indirectly by radiographic examination (bite wing). The four parameters examined were anatomic form, secondary caries, marginal staining and marginal adaptation. If the difference was recorded between the two examiners, and if they could not reach an agreement, a third clinician, who also underwent the calibration exercises (GM), made the final decision.
1 year

Collaborators and Investigators

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

Sponsor

University of Chile

Investigators

  • Principal Investigator: eduardo fernandez, University of 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

May 1, 2003

Primary Completion (Actual)

December 1, 2013

Study Completion (Actual)

December 1, 2013

Study Registration Dates

First Submitted

August 19, 2014

First Submitted That Met QC Criteria

August 20, 2014

First Posted (Estimate)

August 21, 2014

Study Record Updates

Last Update Posted (Estimate)

August 21, 2014

Last Update Submitted That Met QC Criteria

August 20, 2014

Last Verified

August 1, 2014

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • FOUCH2012/10-4

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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