Clinical Performance of Ceramic CAD/CAM Crowns

NCT03921307 | Completed DMC

• 1 other identifier: 33291
• Study Type: observational
• Target: 251
• Locations: 1 country
• Sites: 1

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.

Conditions

Tooth Crown Fracture; Dental Caries

Keywords

Computer-Aided Design; dental crowns; survival

Outcome Measures

Primary Outcomes (2)

• Survival percentage

  Kaplan Meier analysis of survival of the crowns

  6 years

• Clinical performance of crowns via modified California Dental Association (CDA) criteria

  Biological complications: pulpal involvement, recurrent caries, tooth fracture. Technical complications: marginal integrity (slight marginal discrepancy, open margins, marginal overhang, under-contoured margins), loss of retention, crown fracture, chipping/crack lines, open proximal contact. Esthetic complications: surface texture/smoothness, color match/mismatch, marginal discoloration, over or under-contoured.

  6 years

Secondary Outcomes (1)

• Patient satisfaction with esthetic and function of crowns

  6 years

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

All patients who received dental treatment at the Faculty of Dentistry, University of Toronto.

You may qualify if:

• Healthy periodontal tissue Adequate root canal treatment

You may not qualify if:

• Parafunctional habits

Sponsors & Collaborators

• University of Toronto: lead

Study Sites (1)

University of Toronto

Toronto, Ontario, M5G 1G6, Canada

Location

Related Publications (7)

• Altamimi AM, Tripodakis AP, Eliades G, Hirayama H. Comparison of fracture resistance and fracture characterization of bilayered zirconia/fluorapatite and monolithic lithium disilicate all ceramic crowns. Int J Esthet Dent. 2014 Spring;9(1):98-110.

  PMID: 24757702 BACKGROUND

• Belli R, Petschelt A, Hofner B, Hajto J, Scherrer SS, Lohbauer U. Fracture Rates and Lifetime Estimations of CAD/CAM All-ceramic Restorations. J Dent Res. 2016 Jan;95(1):67-73. doi: 10.1177/0022034515608187. Epub 2015 Oct 1.

  PMID: 26428908 BACKGROUND

• Cortellini D, Canale A. Bonding lithium disilicate ceramic to feather-edge tooth preparations: a minimally invasive treatment concept. J Adhes Dent. 2012 Feb;14(1):7-10. doi: 10.3290/j.jad.a22708.

  PMID: 22282749 BACKGROUND

• Fasbinder DJ, Dennison JB, Heys D, Neiva G. A clinical evaluation of chairside lithium disilicate CAD/CAM crowns: a two-year report. J Am Dent Assoc. 2010 Jun;141 Suppl 2:10S-4S. doi: 10.14219/jada.archive.2010.0355.

  PMID: 20516109 BACKGROUND

• 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.

  PMID: 29103104 BACKGROUND

• 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.

  PMID: 20552085 BACKGROUND

• 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.

  PMID: 25935085 BACKGROUND

MeSH Terms

Conditions

Dental Caries

Condition Hierarchy (Ancestors)

Tooth Demineralization; Tooth Diseases; Stomatognathic Diseases

Study Officials

• Ahmed Alamri

  University of Toronto

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor

Study Record Dates

• First Submitted: April 7, 2019
• First Posted: April 19, 2019
• Study Start: May 15, 2017
• Primary Completion: December 21, 2018
• Study Completion: December 21, 2018
• Last Updated: April 19, 2019

Record last verified: 2019-04

Data Sharing

• IPD Sharing: Will not share

Locations

CA (1)