Clinical Performance of Ceramic CAD/CAM Crowns

NCT ID: NCT03921307

Last Updated: 2019-04-19

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 251 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2017-05-15
• Study Completion Date: 2018-12-21

Brief Summary

The purpose of this study was to evaluate the clinical performance of laboratory and chairside fabricated monolithic anterior and posterior LDGC CAD/CAM crowns performed by predoctoral students at the University of Toronto and the effect of different patient and provider-related factors on their longevity and to compare them to the metal-ceramic (MC) crowns. A sample of LDGC CAD/CAM crowns (IPS e.max, Ivoclar Vivadent) provided by predoctoral students was evaluated. Crown preparations were made according to the specific criteria and were milled in-house using the CEREC bluecam and Omnicam systems. Crowns were cemented with Rely-X Unicem (3M/ESPE) and Calibra Universal (Dentsply Sirona) resin cements. Clinical assessment of the crowns and supporting periodontal structures was performed following the modified California Dental Association (CDA) criteria. Intra-oral photographs, periapical and bitewing radiographs were taken for further assessment by two evaluators. Two-hundred and fifty-one patients with 275 crowns were examined with a follow-up period of up to 6 years.

Detailed Description

The clinical success of the monolithic Lithium-disilicate Glass-ceramic (LDGC) crowns manufactured with computer-aided design (CAD) / computer-aided manufacturing (CAM) technology provided by predoctoral students was not investigated. Thus, the purpose of this study was to evaluate the clinical performance of laboratory and chairside fabricated monolithic anterior and posterior LDGC CAD/CAM crowns performed by predoctoral students at the University of Toronto and the effect of different patient and provider-related factors on their longevity and to compare them to the metal-ceramic (MC) crowns. A sample of LDGC CAD/CAM crowns (IPS e.max, Ivoclar Vivadent) provided by predoctoral students was evaluated. Crown preparations were made according to the specific criteria and were milled in-house using the CEREC bluecam and Omnicam systems. Crowns were cemented with Rely-X Unicem (3M/ESPE) and Calibra Universal (Dentsply Sirona) resin cements. Clinical assessment of the crowns and supporting periodontal structures was performed following the modified California Dental Association (CDA) criteria. Intra-oral photographs, periapical and bitewing radiographs were taken for further assessment by two evaluators. Two-hundred and fifty-one patients with 275 crowns were examined with a follow-up period of up to 6 years. Part 1 evaluated the performance of laboratory-fabricated LDGC CAD/CAM crowns. Part 2 evaluated the performance of chairside LDGC CAD/CAM crowns. Forty crowns were evaluated. Part 3 evaluated the performance of LDGC CAD/CAM and MC crowns using split-mouth design. A total of 25 patients and 50 crowns (25 crowns for each group) were examined.

Conditions

Tooth Crown Fracture; Dental Caries

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: RETROSPECTIVE

Eligibility Criteria

Inclusion Criteria

• Healthy periodontal tissue Adequate root canal treatment

Exclusion Criteria

• Parafunctional habits

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University of Toronto

OTHER

Sponsor Role: lead

Responsible Party

Ahmed Alamri

Assistant Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Ahmed Alamri

Role: PRINCIPAL_INVESTIGATOR

University of Toronto

Locations

University of Toronto

Toronto, Ontario, Canada

Countries

Canada

References

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Reference Type: BACKGROUND

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Reference Type: BACKGROUND

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Reference Type: BACKGROUND

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Reference Type: BACKGROUND

PMID: 20516109 (View on PubMed)

Rauch A, Reich S, Dalchau L, Schierz O. Clinical survival of chair-side generated monolithic lithium disilicate crowns:10-year results. Clin Oral Investig. 2018 May;22(4):1763-1769. doi: 10.1007/s00784-017-2271-3. Epub 2017 Nov 4.

Reference Type: BACKGROUND

PMID: 29103104 (View on PubMed)

Reich S, Fischer S, Sobotta B, Klapper HU, Gozdowski S. A preliminary study on the short-term efficacy of chairside computer-aided design/computer-assisted manufacturing- generated posterior lithium disilicate crowns. Int J Prosthodont. 2010 May-Jun;23(3):214-6.

Reference Type: BACKGROUND

PMID: 20552085 (View on PubMed)

Seydler B, Schmitter M. Clinical performance of two different CAD/CAM-fabricated ceramic crowns: 2-Year results. J Prosthet Dent. 2015 Aug;114(2):212-6. doi: 10.1016/j.prosdent.2015.02.016. Epub 2015 Apr 30.

Reference Type: BACKGROUND

PMID: 25935085 (View on PubMed)

Other Identifiers

33291

Identifier Type: -

Identifier Source: org_study_id