Multicenter Trial Comparing One-step Partial Caries Removal to Complete Caries Removal for the Treatment of Deep Carious Lesions in Permanent Teeth. (DECAT : DEep CAries Treatment). (DECAT)

September 28, 2016 updated by: Hospices Civils de Lyon

Multicenter Randomized Controlled Trial Comparing One-step Partial Caries Removal to Complete Caries Removal for the Treatment of Deep Carious Lesions in Permanent Teeth DECAT DEep CAries Treatment

This clinical trial is a national multicenter randomized controlled trial performed in parallel groups aiming to validate a treatment that preserves pulp vitality of mature permanent posterior teeth through partial removal of carious tissue and restoring tooth structure using a simple filling in one session, thus delaying premature tooth aging.

Two successive randomizations will be performed (allocation ratio 1:1); firstly for the type of excavation carried out (partial vs. complete caries removal) and secondly for the nature of the adhesive used (antibacterial adhesive vs. non-antibacterial adhesive). The second randomization will not be carried out for teeth requiring endodontic treatment after the first randomization.

The study's primary objective will be to compare, at 1 year of follow-up, the efficacy (binary success criteria) of partial caries removal versus complete caries removal in occlusal or proximal deep lesions of mature permanent posterior teeth (bicuspids and molars except third molars). Secondary objectives will include the comparison, at 1 year of follow-up, of the efficacy (binary success criteria) of an antibacterial two-step self-etch adhesive versus a traditional non-antibacterial two-step self-etch adhesive. Another secondary objective will be to compare, at two and three years of follow-up, the efficacy of partial versus complete caries removal.

The primary outcome is the success of the caries removal protocol at one year, measured according to 5 FDI criteria, while the secondary outcome is the contribution of the functional and biological dimensions of the 5 FDI criteria items to determining success or failure of the treatment. The outcome of success will be the same for all objectives, primary and secondary.

Study Overview

Study Type

Interventional

Enrollment (Anticipated)

464

Phase

  • Phase 3

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

      • Clermont Ferrand, France, 63003
        • Recruiting
        • Hopital Estaing
        • Contact:
        • Principal Investigator:
          • DOMEJEAN Sophie
      • Creteil, France, 94000
        • Recruiting
        • Hôpital Albert Chenevier
        • Contact:
        • Principal Investigator:
          • DURSUN Elisabeth
        • Sub-Investigator:
          • LANDRU Marguerite-Marie
      • Grenay, France, 62160
        • Recruiting
        • Cabinet libéral
        • Contact:
        • Principal Investigator:
          • TRENTESAUX Thomas
      • IVRY SUR SEINE Cedex, France, 94205
        • Recruiting
        • Hôpital Charles Foix
        • Contact:
        • Principal Investigator:
          • FRON-CHABOUIS Hélène
        • Sub-Investigator:
          • DECUP Franck
        • Sub-Investigator:
          • ATTAL Jean-Pierre
        • Sub-Investigator:
          • CHATELAIN Claire
      • Lille, France
        • Recruiting
        • Chu Lille
        • Contact:
        • Principal Investigator:
          • LINEZ Marc
        • Sub-Investigator:
          • GAMBIEZ Alain
        • Sub-Investigator:
          • HILDELBERT Pierre
        • Sub-Investigator:
          • BECAVIN Thibault
        • Sub-Investigator:
          • ROBBERECHT Lieven
        • Sub-Investigator:
          • TRENTESAUX Thomas
        • Sub-Investigator:
          • CATTEAU Céline
      • Lyon, France, 69007
        • Recruiting
        • Service de consultations et traitements dentaires
        • Contact:
        • Principal Investigator:
          • VILLAT Cyril
        • Sub-Investigator:
          • LUCCHINI Marion
        • Sub-Investigator:
          • GASQUI Marie-Agnès
        • Sub-Investigator:
          • MORRIER Jean-Jacques
        • Sub-Investigator:
          • SELLI Thierry
        • Sub-Investigator:
          • THIVICHON-PRINCE Beatrice
        • Principal Investigator:
          • GROSGOGEAT Brigitte
      • Marseille, France, 13385
        • Recruiting
        • Hopital de la Timone
        • Contact:
        • Sub-Investigator:
          • TASSERY Hervé
        • Sub-Investigator:
          • JACQUOT Bruno
        • Principal Investigator:
          • RASKIN Anne
      • Nantes, France, 44093
        • Recruiting
        • CHRU de Nantes
        • Contact:
        • Principal Investigator:
          • WEISS Pierre
        • Sub-Investigator:
          • LOPEZ-CAZAUX Serena
        • Sub-Investigator:
          • ENKEL Bénédicte
        • Sub-Investigator:
          • PRUD'HOMME Tony
      • Nice, France, 06003
        • Recruiting
        • CHU Nice
        • Contact:
        • Principal Investigator:
          • BRULAT Nathalie
        • Sub-Investigator:
          • MULLER BOLLA Michèle
      • PARIS Cedex 12, France, 75571
        • Recruiting
        • APAH Rothschild- Garancière
        • Contact:
        • Principal Investigator:
          • PLASSE-PRADELLE Nelly
        • Sub-Investigator:
          • HARTMANN Aline
        • Sub-Investigator:
          • MESGOUEZ-MENEZ Catherine
      • Paris, France, 75013
        • Recruiting
        • Groupe Hospitalier Pitié Salpêtrière
        • Contact:
        • Principal Investigator:
          • BOSCO Julia
        • Sub-Investigator:
          • HOUARI Sophia
      • Paris, France, 75017
        • Recruiting
        • Cabinet libéral
        • Contact:
        • Principal Investigator:
          • DECUP Franck
      • Pessac, France, 33604
        • Recruiting
        • Hopital Xavier Arnozan
        • Contact:
        • Sub-Investigator:
          • BARSBY Terence
        • Sub-Investigator:
          • KEROUREDAN Olivia
        • Sub-Investigator:
          • AUSSEL Audrey
        • Principal Investigator:
          • ORIEZ-PONS Dominique
      • Rennes, France, 35033
        • Recruiting
        • CHRU Rennes
        • Contact:
        • Principal Investigator:
          • TURPIN Yann-Loïg
        • Sub-Investigator:
          • PERARD Matthieu
      • Toulouse, France, 31059
        • Recruiting
        • CHRU Toulouse
        • Contact:
        • Principal Investigator:
          • JONIOT Sabine
        • Sub-Investigator:
          • GEORGELIN-GURGEL Marie
        • Sub-Investigator:
          • VAYSSE Fréderic
        • Sub-Investigator:
          • DIEMER Franck
        • Sub-Investigator:
          • BONIN Bertrand
        • Sub-Investigator:
          • MONSARRAT Paul

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

4 years to 76 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

Randomization n°1 - Partial versus complete caries removal

Patient-related criteria:

  • Patient consulting in one of the multicenter trial centers
  • Male and female aged 8-80 (inclusive),
  • Affiliated to a social security regimen
  • Able to tolerate necessary restorative procedures
  • Provide informed consent
  • Accepts the three-year follow-up period

Tooth related criteria:

  • Mature permanent posterior tooth
  • Tooth with vital pulp according to pulp-sensitivity tests
  • Tooth with a deep (primary or secondary) at least proximal and/or occlusal carious lesion presenting a residual dentin thickness with no continuity between the carious cavity and the pulp chamber.
  • In case of proximal lesions, the proximal cervical limit must allow proper placement of a waterproof dental dam (confirmed by a bitewing X-ray radiograph)
  • Tooth requiring a direct partial restorative treatment.

Randomization n°2 - Antibacterial vs. non antibacterial adhesive application

Tooth has been assigned a treatment by randomization n°1.

Exclusion Criteria:

Randomization n°1 - Partial versus complete caries removal

Patient-related criteria:

  • Person under guardianship, pregnant or nursing woman,
  • Risk of infectious endocarditis,
  • Patient who has an implanted Cardiac Pacemaker/Defibrillator
  • Patient with severe periodontal disease (pocket depth ≥5mm and/or mobility type IV),
  • Poor oral hygiene (abundance of soft matter within the gingival pocket and/or on the tooth and gingival margin = score 3 [Silness and Loe, 1964],
  • Allergy to any of the materials and/or anaesthetic used,
  • Uncooperative patients.

Tooth related criteria:

  • Nocturnal pain causing insomnia,
  • Tooth suffering dentin hypersensitivity (sharp sudden pain of short duration pain arising from exposed dentin (erosion and/or gingival recession), typically in response to external stimuli (air blast hypersensitivity [Schiff et al., 1994], tactile hypersensitivity),
  • Sensitivity to axial or lateral percussion;
  • Radiolucent apical image,
  • Condensing osteitis,
  • Tooth having an external or internal resorption,
  • Tooth having suffered trauma,
  • Tooth with a carious cervical lesion,
  • Tooth with an occlusal wear associated to a dentine exposure,
  • Tooth supporting clasp of a removable partial denture (RPD).
  • Tooth with defects of mineralization that once the treated tooth could come into contact of the carried out restoration

Randomization n°2 - Antibacterial vs. non antibacterial adhesive application

- Tooth with pulp exposure after randomization n°1 requiring endodontic treatment (pulp exposure > 2 mm² and/or haemostasis not obtained).

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
Experimental: Partial excavation
patients receiving after excavation (in case of absence of pulp exposure after excavation necessitating endodontic treatment) antibacterial adhesive or non-antibacterial adhesive

Instruments and procedures:

  • Soprolife® (Acteon, La Ciotat, France) dental imaging device to detect dentinal infection status. The green-black light indicates infected dentin, red indicates infected/affected dentin and green indicates healthy dentinal tissue.
  • Sterile round bur under water spray coolant followed by final excavation with hand instruments The clinician will remove the superficial necrotic and demineralized dentin with complete excavation of the peripheral demineralized dentin, avoiding excavation close to the pulp.

Hand instruments will be used for final excavation following clinical criteria guidelines (color of residual dentin and probe resistance) and taking in to consideration the color data obtained by the Soprolife® camera.

The operator will stop excavating when the dentin close to the pulp appears red (for infected dentin).

Instruments and procedures:

Idem partial excavation arm.

In the complete excavation arm, the operator will stop excavating when the dentin close to the pulp appears green (for healthy dentin tissue) using the Soprolife® camera, leaving no infected or affected dentin.

Enamel and dentin will be conditioned according to the manufacturer's instructions. Both antibacterial and conventional adhesives are two-steps bonding systems.

The first step consists of the application of a primer to the enamel and dentin for 20 seconds (which allows the completion of etching and priming procedures). The second step consists of the application of the antibacterial adhesive and its light curing for 10 seconds.

Idem antibacterial dental adhesive arm. A conventional dental adhesive will be used instead of an antibacterial.
Active Comparator: Complete excavation
patients receiving after excavation (in case of absence of pulp exposure after excavation necessitating endodontic treatment) antibacterial adhesive or non-antibacterial adhesive

Instruments and procedures:

  • Soprolife® (Acteon, La Ciotat, France) dental imaging device to detect dentinal infection status. The green-black light indicates infected dentin, red indicates infected/affected dentin and green indicates healthy dentinal tissue.
  • Sterile round bur under water spray coolant followed by final excavation with hand instruments The clinician will remove the superficial necrotic and demineralized dentin with complete excavation of the peripheral demineralized dentin, avoiding excavation close to the pulp.

Hand instruments will be used for final excavation following clinical criteria guidelines (color of residual dentin and probe resistance) and taking in to consideration the color data obtained by the Soprolife® camera.

The operator will stop excavating when the dentin close to the pulp appears red (for infected dentin).

Instruments and procedures:

Idem partial excavation arm.

In the complete excavation arm, the operator will stop excavating when the dentin close to the pulp appears green (for healthy dentin tissue) using the Soprolife® camera, leaving no infected or affected dentin.

Enamel and dentin will be conditioned according to the manufacturer's instructions. Both antibacterial and conventional adhesives are two-steps bonding systems.

The first step consists of the application of a primer to the enamel and dentin for 20 seconds (which allows the completion of etching and priming procedures). The second step consists of the application of the antibacterial adhesive and its light curing for 10 seconds.

Idem antibacterial dental adhesive arm. A conventional dental adhesive will be used instead of an antibacterial.
Experimental: Antibacterial dental adhesive
patients with prior partial or complete caries removal (excepted patients with a pulp exposure after excavation necessitating endodontic treatment)

Instruments and procedures:

  • Soprolife® (Acteon, La Ciotat, France) dental imaging device to detect dentinal infection status. The green-black light indicates infected dentin, red indicates infected/affected dentin and green indicates healthy dentinal tissue.
  • Sterile round bur under water spray coolant followed by final excavation with hand instruments The clinician will remove the superficial necrotic and demineralized dentin with complete excavation of the peripheral demineralized dentin, avoiding excavation close to the pulp.

Hand instruments will be used for final excavation following clinical criteria guidelines (color of residual dentin and probe resistance) and taking in to consideration the color data obtained by the Soprolife® camera.

The operator will stop excavating when the dentin close to the pulp appears red (for infected dentin).

Instruments and procedures:

Idem partial excavation arm.

In the complete excavation arm, the operator will stop excavating when the dentin close to the pulp appears green (for healthy dentin tissue) using the Soprolife® camera, leaving no infected or affected dentin.

Enamel and dentin will be conditioned according to the manufacturer's instructions. Both antibacterial and conventional adhesives are two-steps bonding systems.

The first step consists of the application of a primer to the enamel and dentin for 20 seconds (which allows the completion of etching and priming procedures). The second step consists of the application of the antibacterial adhesive and its light curing for 10 seconds.

Idem antibacterial dental adhesive arm. A conventional dental adhesive will be used instead of an antibacterial.
Active Comparator: Conventional dental adhesive
patients with prior partial or complete caries removal (excepted patients with a pulp exposure after excavation necessitating endodontic treatment)

Instruments and procedures:

  • Soprolife® (Acteon, La Ciotat, France) dental imaging device to detect dentinal infection status. The green-black light indicates infected dentin, red indicates infected/affected dentin and green indicates healthy dentinal tissue.
  • Sterile round bur under water spray coolant followed by final excavation with hand instruments The clinician will remove the superficial necrotic and demineralized dentin with complete excavation of the peripheral demineralized dentin, avoiding excavation close to the pulp.

Hand instruments will be used for final excavation following clinical criteria guidelines (color of residual dentin and probe resistance) and taking in to consideration the color data obtained by the Soprolife® camera.

The operator will stop excavating when the dentin close to the pulp appears red (for infected dentin).

Instruments and procedures:

Idem partial excavation arm.

In the complete excavation arm, the operator will stop excavating when the dentin close to the pulp appears green (for healthy dentin tissue) using the Soprolife® camera, leaving no infected or affected dentin.

Enamel and dentin will be conditioned according to the manufacturer's instructions. Both antibacterial and conventional adhesives are two-steps bonding systems.

The first step consists of the application of a primer to the enamel and dentin for 20 seconds (which allows the completion of etching and priming procedures). The second step consists of the application of the antibacterial adhesive and its light curing for 10 seconds.

Idem antibacterial dental adhesive arm. A conventional dental adhesive will be used instead of an antibacterial.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Probability of success in arm P (Partial Caries Removal) compared to arm C (Complete Caries Removal) using a composite criteria of success summarized as a binary success criteria (cf. description below)
Time Frame: one year of follow-up.

Cases will be considered as successful if each of the 5 following criteria described by the World Dental Federation (FDI) present a score of 3 or less:

  • Fracture of material and retention (item 5)
  • Marginal adaptation (item 6)
  • Radiographic examination (including apical pathologies) (item 9)
  • Post-operative sensitivity and tooth vitality (item 11)
  • Recurrence of caries (item 12) Criteria 5, 6 and 9 are functional criteria while criteria 11 and 12 are biological criteria.

Considering a score of 4 or 5 as failure means that a re-intervention on the tooth (score 4) would be considered as a failure in the context of this study.

Adverse events will be recorded and reported as general safety outcomes.

one year of follow-up.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Contribution of the functional and biological dimensions of the five FDI criteria items
Time Frame: At one year of follow-up.
Assessment of the relative importance of each of the 5 FDI criteria in determining failure for both the primary outcome
At one year of follow-up.
Probability of success in arm P (Partial Caries Removal) compared to arm C (Complete Caries Removal) using a composite criteria of success summarized as a binary success criteria, at two and three years of follow-up.
Time Frame: At two and three years of follow-up.
same criteria as the primary outcome measure of efficacy (composite criteria summarized as a binary success criteria)
At two and three years of follow-up.
Probability of success after the use of an antibacterial adhesive compared to the use of a non-antibacterial adhesive using a composite criteria of success summarized as a binary success criteria, at one, two and three years of follow-up.
Time Frame: At one, two and three years of follow-up.
same criteria as the primary outcome measure of efficacy (composite criteria summarized as a binary success criteria)
At one, two and three years of follow-up.
Identification of predictive factors of clinical success from among the following list: presence of post-operative pain, age of patient, type of the carious lesion, location of the carious lesion (occlusal or proximal) and pulp exposure.
Time Frame: At one, two and three years of follow-up.
the dependent variable (clinical success) corresponds to the same criteria as the primary outcome measure of efficacy (composite criteria summarized as a binary success criteria)
At one, two and three years of follow-up.
Description of the Consequences of Failures per Treatment Arm
Time Frame: At one, two and three years of follow-up.
total number of visits, need for endodontic treatment, need for extraction
At one, two and three years of follow-up.

Collaborators and Investigators

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

Investigators

  • Study Director: BRIGITTE GROSGOGEAT, Professor, Hospices Civils de Lyon

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.

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

February 1, 2015

Primary Completion (Anticipated)

August 1, 2017

Study Completion (Anticipated)

August 1, 2020

Study Registration Dates

First Submitted

October 15, 2014

First Submitted That Met QC Criteria

November 5, 2014

First Posted (Estimate)

November 7, 2014

Study Record Updates

Last Update Posted (Estimate)

September 29, 2016

Last Update Submitted That Met QC Criteria

September 28, 2016

Last Verified

September 1, 2016

More Information

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 Deep Caries

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