European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
June 2017
Print ISSN:
0965-7452
Electronic ISSN:
2396-8893
Vol:
25
Issue:
2

Optical Properties and Failure Load of Thin CAD/CAM Ceramic Veneers

This study aimed to compare optical properties and failure load of leucite (IPS Empress CAD LT) and lithium disilicate glass ceramic (IPS e.max CAD LT) materials in incisor veneers. Four groups of veneers were made on 36 bovine incisors with Cerec 3D milling unit (n=9/group): 0.5 and 0.3 mm thick leucite glass and 0.5 and 0.3 mm lithium disilicate glass veneers. The optical features were measured with CM-700d spectrophotometer using white and yellow try-in pastes. Differences were determined by means of ΔE value and luminance. The bovine teeth with veneers were mounted on acrylic resin blocks (Palapress, Heraeus Kulzer) and static loading test was conducted (LR30K plus, Lloyd Instruments). The color difference of veneers could be noticed with yellow and white cements when the material thickness increased from 0.3 to 0.5 mm (leucite ∆E yellow 4.4, white 6.0; lithiumdisilicate ∆E yellow 2.1, white 4.1). Both materials showed similar failure load with 0.5 mm veneers (leucite 1906 +/-319 N; lithiumdisilicate 2098 +/- 309 N). The failure load of 0.3 mm thick lithium dilisilicate veneers (2002 +/- 427
N) was comparable with the 0.5mm veneers. Ultrathin lithium disilicate glass ceramic veneers (0.3 mm) could be a potential option for clinical use.

Keywords
CAD/Cam
Lithium Disilicate
Glass Ceramic
Leucite
Veneer
Failure Load

doi: 10.1922/EJPRD_01677Maunula07

Article Price
£15.00
Institution Article Price
£
Page Start
86
Page End
92
Authors
Dr Henriika Maunula, Dr Jenni Hjerppe, Dr Lippo L.V. Lassila, Prof. Timo O Närhi

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. An Update on the Protocols and Biologic Actions of Platelet Rich Fibrin in Dentistry
  2. 64
  3. 72

  1. Additive Manufacturing: A Novel Method for Fabricating Cobalt-Chromium Removable Partial Denture Frameworks
  2. 73
  3. 78

  1. Marginal Adaptation and Internal Fit of Posterior 3-Unit Zirconia FPDs Fabricated with Different CAD/CAM Systems
  2. 79
  3. 85

  1. Optical Properties and Failure Load of Thin CAD/CAM Ceramic Veneers
  2. 86
  3. 92

  1. The Early Erosive and Abrasive Challenge: A Profilometric, Electron Microscopic and Microhardness Study Using Human, Bovine and Ovine Enamel
  2. 93
  3. 100

  1. Efficacy of Removable Partial Denture Treatment: A Retrospective Oral Health Related Quality of Life Evaluation
  2. 101
  3. 107

  1. Five Year Clinical Evaluation of Restorations Placed in a Low Shrinkage Stress Composite in UK General Dental Practices
  2. 108
  3. 114