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CompletedNCT01724827CECOIAUpdated Mar 13, 2018

Ceramic Versus Composite in the Treatment of Posterior Teeth by Inlays or Onlays

A Phase 3 interventional study of ceramic (Empress CAD, Ivoclar Vivadent) and composite (Lava Ultimate, 3M Espe) in Dental Caries and Inlays, sponsored by Assistance Publique - Hôpitaux de Paris. Completed at 6 sites in France. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2018-03-13.

Sponsored by Assistance Publique - Hôpitaux de Paris · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
355
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The main purpose of this trial is to determine which material, between ceramic and composite, is best to manufacture dental inlays and onlays in the treatment of moderate dental substance losses, generally due to dental caries. Restorations will be done using direct Computer Assisted Design and Manufacturing (CAD-CAM). Another aim of this study is to determine which factors influence the success of these restorations.

Read the detailed description

WHO estimates dental caries prevalence to be over 90% adults worldwide. When tooth substance loss due to the decayed tissue is small, a filling is done by the dentist directly. When the substance loss is important, dentists often treat it with a crown, which presents the disadvantage of further mutilating the tooth. An intermediate technique consists in manufacturing an inlay or an onlay: these restorations become more and more common since they are a minimally invasive solution in such cases. Inlays and onlays can be made of metal, ceramic or composite. Patients tend to refuse metallic restorations, so that dentists generally have to choose between composite and ceramic. Composite wears whereas ceramics fracture. Published in vitro studies provide possible answers to which material is most effective but very few clinical studies have been conducted to confirm them. Material\'s choice for inlay manufacturing is thus more country-based than evidence-based (Most french dentists choose composite while US dentists prefer ceramics for example). The main objective of this trial is to compare the clinical performance of ceramic and composite inlays/onlays. Other objectives include looking for the prognostic factors of these restorations and validating the criteria proposed by the World Dental Federation (FDI) to evaluate dental restorations.

02

Conditions studied

  • Dental Caries
  • Inlays

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Keywords

  • Dental caries
  • inlays
  • composite resins
  • IPS-Empress ceramic
  • bicuspid
  • FDI dental restorations evaluation criteria
03

In context

Dental Caries

1,109 studies on the registry are indexed under Dental Caries; 197 are open to participants now.

This study's enrollment of 355 is above the median of 60 across 916 interventional studies indexed under Dental Caries.

Browse Dental Caries studies →

Lead sponsor

Assistance Publique - Hôpitaux de Paris is the lead sponsor of 3,505 studies on the registry; 1,006 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion criteria :

  • patient aged 18-70,who tolerates restorative procedures and presents a moderate-sized dental caries or restoration (that needs to be replaced) necessitating an inlay/onlay restoration.

Exclusion criteria :

  • allergy to one of the materials employed, bruxism, severe or acute periodontal or carious disease, poor oral hygiene
  • Tooth presents a mobility > II, a periodontal socket > 3mm or supports a removable partial denture

Randomization criterium :

  • tooth necessitates an inlay-onlay restoration after caries or former restoration removal

Exclusion from randomization criteria :

  • subgingival margin after cavity preparation, rubber dam cannot be placed, all tooth cuspids need to be covered by the restoration.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
355 participants (actual)

Study arms

  • Active comparator
    ceramic

    Leucite-reinforced glass ceramic (Empress CAD, Ivoclar Vivadent)

    Device: ceramic (Empress CAD, Ivoclar Vivadent)

  • Active comparator
    composite

    Nanohybrid composite resin (Lava Ultimate, 3M Espe)

    Device: composite (Lava Ultimate, 3M Espe)

Interventions

  • Deviceceramic (Empress CAD, Ivoclar Vivadent)

    Leucite-reinforced glass ceramic (Empress CAD, Ivoclar Vivadent)

  • Devicecomposite (Lava Ultimate, 3M Espe)

    Nanohybrid composite resin (Lava Ultimate, 3M Espe)

06

What researchers measure

Primary outcomes

  1. FDI criteria for dental restorations assessment

    2 independent evaluators The primary outcome will consist in the FDI instrument for dental restorations assessment, as it was published after consensus in 2007 and updated in 2010 . This instrument is composed of three dimensions (biological, functional and esthetic), each consisting of several items that are assessed by clinical and radiographic examination according to Likert scales of 5 terms. Some items are evaluated quantitatively, others visually.The worst score of all items is retained as the overall score of the restoration, thus resulting in a single (ordinal) primary outcome.

    Time frame: at 2 years

Secondary outcomes

  1. Restoration survival analysis

    The primary outcome will consist in the FDI instrument for dental restorations assessment, as it was published after consensus in 2007 and updated in 2010 . This instrument is composed of three dimensions (biological, functional and esthetic), each consisting of several items that are assessed by clinical and radiographic examination according to Likert scales of 5 terms. Some items are evaluated quantitatively, others visually.The worst score of all items is retained as the overall score of the restoration, thus resulting in a single (ordinal) primary outcome.

    Time frame: at 2 years

  2. wear

    The primary outcome will consist in the FDI instrument for dental restorations assessment, as it was published after consensus in 2007 and updated in 2010 . This instrument is composed of three dimensions (biological, functional and esthetic), each consisting of several items that are assessed by clinical and radiographic examination according to Likert scales of 5 terms. Some items are evaluated quantitatively, others visually.The worst score of all items is retained as the overall score of the restoration, thus resulting in a single (ordinal) primary outcome.

    Time frame: at 2 years

  3. overall quality of the restoration

    The primary outcome will consist in the FDI instrument for dental restorations assessment, as it was published after consensus in 2007 and updated in 2010 . This instrument is composed of three dimensions (biological, functional and esthetic), each consisting of several items that are assessed by clinical and radiographic examination according to Likert scales of 5 terms. Some items are evaluated quantitatively, others visually.The worst score of all items is retained as the overall score of the restoration, thus resulting in a single (ordinal) primary outcome.

    Time frame: at 2 years

  4. FDI instrument validity data

    The primary outcome will consist in the FDI instrument for dental restorations assessment, as it was published after consensus in 2007 and updated in 2010 . This instrument is composed of three dimensions (biological, functional and esthetic), each consisting of several items that are assessed by clinical and radiographic examination according to Likert scales of 5 terms. Some items are evaluated quantitatively, others visually.The worst score of all items is retained as the overall score of the restoration, thus resulting in a single (ordinal) primary outcome.

    Time frame: at 2 years

07

Study locations

6 sites
  • Hôpital Charles Foix (APHP), Service d'odontologie
    Ivry-sur-seine, 94200, France
  • Dental pratice
    Lyon, 69003, France
  • Dental pratice
    Paris, 75012, France
  • Dental pratice
    Paris, 75015, France
  • Dental pratice
    Paris, 75017, France
  • Hôtel Dieu, Service d'odontologie
    Toulouse, 31059, France
08

References and documents

Publications

  • Hickel R, Roulet JF, Bayne S, Heintze SD, Mjor IA, Peters M, Rousson V, Randall R, Schmalz G, Tyas M, Vanherle G. Recommendations for conducting controlled clinical studies of dental restorative materials. Science Committee Project 2/98--FDI World Dental Federation study design (Part I) and criteria for evaluation (Part II) of direct and indirect restorations including onlays and partial crowns. J Adhes Dent. 2007;9 Suppl 1:121-47. Erratum In: J Adhes Dent. 2007 Dec;9(6):546. PubMed 18341239 ↗
  • 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. PubMed 20628774 ↗
  • Fron Chabouis H, Prot C, Fonteneau C, Nasr K, Chabreron O, Cazier S, Moussally C, Gaucher A, Khabthani Ben Jaballah I, Boyer R, Leforestier JF, Caumont-Prim A, Chemla F, Maman L, Nabet C, Attal JP. Efficacy of composite versus ceramic inlays and onlays: study protocol for the CECOIA randomized controlled trial. Trials. 2013 Sep 3;14:278. doi: 10.1186/1745-6215-14-278. PubMed 24004961 ↗

Related links

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 13, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01724827
Lead sponsor
Assistance Publique - Hôpitaux de Paris
Collaborators
Ministry of Health, France, Hôpital Charles Foix, Hôtel Dieu - Service d'odontologie (Toulouse), Dental practitionners
Responsible party
Sponsor
First posted
Nov 12, 2012
Start date
Sep 13, 2012
Primary completion
Sep 2016
Completion
Mar 2017
Last update
Mar 13, 2018

Study contacts

hélène fron chabouis, DDS, MSc
study director · APHP, Hôpital Charles Foix, Service d'odontologie, Ivry-sur-Seine, France ; Faculté de chirurgie dentaire, Service de biomatériaux (URB2i EA4462), Université Paris Descartes, Sorbonne Paris Cité, Montrouge, France.

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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