European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
December 2018
Print ISSN:
0965-7452
Electronic ISSN:
2396-8893
Vol:
26
Issue:
4

Shade Stability of Polymer Infiltrated and Resin Nano Ceramic Crowns after Dynamic Chewing Simulation

doi: 10.1922/EJPRD_01807Schurmann10

Objective: Investigation of the shade stability of polymer-infiltrated and resin nano ceramic crowns before and after artificial aging. Method: 40 identical crowns of each of the materials VITA Enamic (VE) and Lava Ultimate (LU) were manufactured. Half of the crowns went through a dynamic chewing simulation (CS) with thermocycling. Material
subgroups: 1. VE, 2. VE/CS, 3. LU, 4. LU/CS (each n=20). These were divided into 4 groups (n=5) and distributed in usual stain solutions. The shade of each crown was measured occlusally and vestibularly before and after insertion using a spectrophotometer (n=5). The data were analyzed using ANOVA and Tukey’s test (p≤0.05). Results: Sum scores (SSC) of the occlusal ΔE values: LU/CS: 7.99, VE: 5.75 VE/CS: 5.44, LU: 5.17. The total sum of the SSC yielded, for the materials: SSCtotal(VE): 20.0 and SSCtotal(LU): 24.0. Significance: Occlusally, there were significant shade differences for VE/CS (p=0.025) and LU/CS (p=0.014) between red wine and distilled water. LU/CS is significantly more clearly stained occlusally by coffee in comparison to the other three material subgroups (VE: p=0.007, LU: p=0.026, VE/CS: p=0.013). Conclusions: The shade stability of VITA Enamic crowns is superior to that of Lava Ultimate crowns. Only Lava Ultimate is affected by chewing simulation.

Keywords
Shade Stability
Polymer-Infiltrated Ceramic
Resin Nano-Ceramic
Accelerated Artificial Aging
Vita Enamic
Lava Ultimate

Article Price
£15.00
Institution Article Price
£
Page Start
174
Page End
183
Authors
Martin Schürmann, Dr. Constanze Olms

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. The Effects of Different Spectrophotometric Modes on Colour Measurement of Resin Composite and Porcelain Materials
  2. 163
  3. 173

  1. Shade Stability of Polymer Infiltrated and Resin Nano Ceramic Crowns after Dynamic Chewing Simulation
  2. 174
  3. 183

  1. Accidental Ingestion of an Implant Screwdriver: A Case Report and Literature Review
  2. 184
  3. 189

  1. Mini Dental Implants in the Management of The Atrophic Maxilla and Mandible: A New Implant Design and Preliminary Results
  2. 190
  3. 196

  1. Prevalence and Factors Associated with the Use of Denture Adhesives by Older Complete Denture Wearers
  2. 197
  3. 201

  1. Clinical Evaluation of All Ceramic Zirconia Framework Resin Bonded Bridges
  2. 203
  3. 211