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Dental CementsNCT04279574

Clinical Performance of Chairside CAD/CAM Restorations

A study testing Lithium disilicate onlays (IPS emaxCAD/Ivoclar) and Chairside zirconia crowns (3M) in people with Dental Cements and Caries,Dental, run by Solventum US LLC at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This investigation will be a longitudinal clinical trial to study the long-term clinical performance of a resin cement for chairside CAD/CAM restorations. Lithium disilicate chairside CAD/CAM onlays will be adhesively bonded using a selective enamel etch technique with an adhesive. Read more about this study

Who is it for?
Ages 18 to 89 years
Conditions the study is for
Dental Cements, Caries,Dental
What is being tested?
Lithium disilicate onlays (IPS emaxCAD/Ivoclar) and Chairside zirconia crowns (3M)
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
58 participants
Where
1 siteUnited States
Study dates
26 Aug 2020to 22 May 2024
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 89 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Subject in need of crown and/or onlay restoration
  • Subject age 18 or above
  • Subject with healthy / treated periodontal status (max. degree of movement 1)
  • Subject agrees to participate in the study and signed informed consent and HIPAA form

Who cannot join

  • Devital or sensitive teeth
  • Teeth diagnosed with symptoms of incomplete tooth fracture
  • Teeth with prior endodontic treatment of any kind
  • Teeth with a history of direct or indirect pulp capping procedures
  • Subjects with uncontrolled bruxism or parafunctional habits
  • Subject has known allergies to any product used in this study
Show all 9Show fewer
  • Subject will not be available for the study duration
  • Subjects with significant untreated dental disease to include periodontitis and rampant caries
  • Pregnant or lactating women

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Michigan

    Ann Arbor, Michigan, 48109-1078

Other trials in United States

About this study

Official title: Clinical Performance of Chairside CAD/CAM Restorations Using a New Adhesive Cement

This investigation will be a longitudinal clinical trial to study the long-term clinical performance of a resin cement for chairside CAD/CAM restorations. Lithium disilicate chairside CAD/CAM onlays will be adhesively bonded using a selective enamel etch technique with an adhesive.

Full contour zirconia crowns will be cemented using a self-adhesive resin cement.

Read the detailed description

A wide variety of restorative materials are available for dental restorations. The most popular current materials include glass ceramics and full contour zirconia. Glass ceramic materials are generally preferred for their high translucency mimicking enamel-like esthetics of natural teeth and zirconia is preferred for high strength applications. Both of these materials are available for clinical treatment using chairside CAD/CAM technology.

The introduction of an induction sintering oven (SpeedFire oven/Dentsply Sirona) opened the opportunity for chairside full contour zirconia crowns by decreasing sintering times for zirconia to under 30 minutes. 3M Chairside Zirconia (3M) was marketed in 2019 and offers improved esthetics and high strength for monolithic zirconia restorations with an efficient processing time.

This investigation will be a longitudinal clinical trial to study the long-term clinical performance of CAD/CAM restorations. Lithium disilicate chairside CAD/CAM onlays (IPS emaxCAD/Ivoclar) will be adhesively bonded using a selective enamel etch technique with a universal adhesive (3M) and a resin cement (3M). Full contour zirconia crowns (3M Chairside Zirconia/3M) will be cemented using a self-adhesive technique.

Being tested
Lithium disilicate onlays (IPS emaxCAD/Ivoclar), Chairside zirconia crowns (3M)
Medical subject headings
Dental Caries

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Lithium disilicate onlays (IPS emaxCAD/Ivoclar)Device

    Restoration of posterior teeth

  • Chairside zirconia crowns (3M)Device

    Restoration of posterior teeth

Study groups in NCT04279574
Study groupRoleWhat they receive
CAD/CAM OnlaysOtherLithium disilicate chairside CAD/CAM onlays (IPS emaxCAD/Ivoclar) will be adhesively bonded using a selective enamel etch technique with an adhesive (3M) and cement (3M).
Receives: Device: Lithium disilicate onlays (IPS emaxCAD/Ivoclar)
CAD/CAM CrownsOtherFull contour zirconia crowns (3M Chairside Zirconia/3M) will be cemented using a self-adhesive cement (3M).
Receives: Device: Chairside zirconia crowns (3M)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Retention Scores]

    Retention. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [5b.1 Restoration in place; 5b.5 Complete loss of restoration] Functional property (retention) assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

Secondary outcomes (18)
  1. Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Material Fracture Scores]

    Material Fracture. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Functional properties assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  2. Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Approximal Anatomical Contact Form - Mesial]

    Approximal anatomical contact form - mesial. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Functional property assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  3. Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Approximal Anatomical Contact Point - Mesial Scores]

    Approximal anatomical contact point - mesial. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Functional property assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  4. Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Approximal Anatomical Contact Form - Distal Scores]

    Approximal Anatomical Contact Form - Distal. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Functional property assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  5. Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Approximal Anatomical Contact Point - Distal Scores]

    Approximal Anatomical Contact Point - Distal. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Functional property assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  6. Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Occlusal Contour and Wear Scores]

    Occlusal contour and wear. Evaluations according to FDI World Dental Federation critera (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Functional property assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  7. Biologic Properties of Restorations (Onlays and Crowns) [Recurrence of Caries, Erosion, Abfraction Scores]

    Recurrence of caries, erosion, abfraction. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Biological properties assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessments at 6 months, 1 year, 2 years, and 3 years

  8. Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Marginal Adaptation Scores]

    Marginal Adaptation. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Functional property assessed by visual and/or tactile assessment by two independent examiners.]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  9. Esthetic Properties of Restorations (Onlays and Crowns) [Surface Luster Scores]

    Surface Luster: Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  10. Short-term Post-operative Sensitivity (Onlays and Crowns)

    Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [Rating Scale 1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Biological properties assessed by patient interview.

    Measured: up to 4 weeks after baseline with weekly assessments or until the restoration is reported asymptomatic

  11. Gingival Index (Onlays and Crowns)

    Loe \& Silness Index, 1963 [0: normal gingiva, 1: mild inflammation and no bleeding, 2: moderate inflammation and bleeding, 3: severe inflammation]

    Measured: 3 years with assessments at 6 months, 1 year, 2 years, and 3 years

  12. Plaque Index (Onlays and Crowns)

    Silness \& Loe Index, 1964 [0: plaque detectable in the gingival area, 1: plaque recognized only by running tip of probe across tooth surface at gingival crest, 2: moderate accumulation of plaque visible along gingival margin and adjacent tooth, 3: abundance of plaque visible along gingival margin and adjacent tooth]

    Measured: 3 years with assessments at 6 months, 1 year, 2 years, and 3 years

  13. Esthetic Properties Clinical Performance of Restorations (Onlays and Crowns) [Aesthetic Anatomical Form]

    Aesthetic Anatomical Form. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Functional property assessed by visual and/or tactile assessment by two independent examiners]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  14. Biologic Properties of Restorations (Onlays and Crowns) [Post-operative Sensitivity]

    Post-operative sensitivity. Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor] Biological properties assessed by patient interview.]

    Measured: 3 years with assessments at 6 months, 1 year, 2 years, and 3 years

  15. Esthetic Properties of Restorations (Onlays and Crowns) [Surface Staining Scores]

    Surface Staining: Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  16. Esthetic Properties of Restorations (Onlays and Crowns) [Margin Staining Scores]

    Margin Staining: Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  17. Esthetic Properties of Restorations (Onlays and Crowns) [Color Match and Translucency Scores]

    Color Match and Translucency: Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

  18. Esthetic Properties of Restorations (Onlays and Crowns) [Aesthetic Anatomical Form Scores]

    Aesthetic anatomical form: Evaluations according to FDI World Dental Federation criteria (Hickel et al., 2010) [1: Clinically excellent, 2: Clinically good, 3: Clinically sufficient, 4: Clinically unsatisfactory, 5: Clinically poor]

    Measured: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Feb 2020
  2. Study start26 Aug 2020
  3. Primary completion22 May 2024
  4. Study completion22 May 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
58 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04279574
Sponsor's protocol ID
EM-11-050060
Status last verified
Mar 2025
First submitted
13 Feb 2020
Last updated
24 Mar 2025
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
No

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.

    PubMed 20628774
  • SILNESS J, LOE H. PERIODONTAL DISEASE IN PREGNANCY. II. CORRELATION BETWEEN ORAL HYGIENE AND PERIODONTAL CONDTION. Acta Odontol Scand. 1964 Feb;22:121-35. doi: 10.3109/00016356408993968. No abstract available.

    PubMed 14158464
  • LOE H, SILNESS J. PERIODONTAL DISEASE IN PREGNANCY. I. PREVALENCE AND SEVERITY. Acta Odontol Scand. 1963 Dec;21:533-51. doi: 10.3109/00016356309011240. No abstract available.

    PubMed 14121956

Questions about this trial

What is this clinical trial studying?

A study testing Lithium disilicate onlays (IPS emaxCAD/Ivoclar) and Chairside zirconia crowns (3M) in people with Dental Cements and Caries,Dental, run by Solventum US LLC at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 24 Mar 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 24 Mar 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Functional Long-term Properties Clinical Performance of Restorations (Onlays and Crowns) [Retention Scores] (time frame: 3 years with assessment visits at baseline, 6 months, 1 year, 2 years, and 3 years). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04279574, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Mar 2025.

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