European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
December 2017
Print ISSN:
0965-7452
Electronic ISSN:
2396-8893
Vol:
25
Issue:
4

The Effect of Core and Veneering Design on the Optical Properties of Polyether Ether Ketone

This study aimed to evaluate the effect of core shade and core and veneering thickness on color parameters and translucency of polyether ether ketone (PEEK). Sixty PEEK discs (0.5 and 1 mm in thickness) with white and dentine shades were veneered with A2 shade indirect composite resin with 0.5, 1 and 1.5 mm thickness (n=5). Cores without
the veneering material served as controls for translucency evaluation. Color parameters were measured by a spectroradiometer. Color difference (ΔE00) and translucency parameters (TP) were computed. Data were analyzed using one-way ANOVA and Tukey’s test (for veneering thickness) and independent t-test (for core shade and thickness) via
SPSS 20.0 (p<0.05). Regarding the veneering thickness, white cores of 0.5 mm thickness showed significant differences in all color parameters. In white cores of 1 mm thickness and dentine cores of 0.5 and 1 mm thickness, there were statistically significant differences only in L*, a* and h*. The mean TP was significantly higher in all white cores
of 1 mm thickness than dentine cores of 1 mm. Considering ΔE00=3.7 as clinically unacceptable, only three groups had higher mean ΔE00 values. Core shade, core thickness, and the veneering thickness affected the color and translucency of PEEK restorations.

Keywords
Polyether Ether Ketone
Color Parameter
Translucency Parameter
Optical Properties
Core Shade
Core Thickness
Veneer Thickness

10.1922/EJPRD_01720Zeighami08

Article Price
£15.00
Institution Article Price
£
Page Start
201
Page End
208
Authors
Dr. Somayeh Zeighami, Dr. Susan Mirmohammadrezaei, Dr. Mahdi Safi, Dr. Seyed Mehran Falahchai

Articles from this issue

  • Title
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  • Pg. End

  1. An Investigation into the Trueness and Precision of Copy Denture Templates Produced by Rapid Prototyping and Conventional Means
  2. 186
  3. 192

  1. A Measurement Protocol for the Marginal and Internal Fit of All-Ceramic Crowns
  2. 193
  3. 200

  1. The Effect of Core and Veneering Design on the Optical Properties of Polyether Ether Ketone
  2. 201
  3. 208

  1. The Effect of Surface Preparation of Acrylic Teeth
  2. 209
  3. 218

  1. A Randomised Controlled Trial of a Universal Bonding Agent at Three Years: Self Etch vs Total Etch
  2. 220
  3. 227

  1. Adhesion and Early Colonization of S. Mutans on Lithium Disilicate Reinforced Glass-Ceramics, Monolithic Zirconia and Dual Cure Resin Cement
  2. 228
  3. 234