European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
September 2008
Print ISSN:
0965-7452
Vol:
16
Issue:
3

The Effect of Three Different Mouthrinses on the Surface Hardness, Gloss and Colour Change of Bleached Nano Composite Resins

Abstract - This in vitro study evaluated the effects of three mouthrinses (Listerine - alcohol containing, Oral B - alcohol free and Rembrandt Plus - peroxide whitening rinse) on the surface hardness, gloss and colour of a nanofill (Filtek Supreme) and nanohybrid (Simile) composite resin that had been subjected to bleaching treatment. 30 specimens of each material were fabricated and randomly divided into three groups of 10. The hardness, gloss and CIE Lab colour parameters of each specimen were assessed prior to the experiments. Specimens were exposed to the 10% carbamide peroxide bleaching agent (Vivastyle) for 2 hours per day for 14 days. Following the bleaching treatment measurements were repeated. The specimens were then conditioned with mouthrinses for 12 hours which was equivalent in time to 1 year of two minutes daily use. The specimens were measured again for hardness, gloss and colour and data were subjected to the statistical analysis. The result of this study showed no statististical difference between the restorative materials after bleaching and the use of mouthrinses (p> 0.05). Bleaching treatment and the use of mouthrinses affected the hardness, gloss and colour of both resins. Significant differences were observed with the use of mouthrinses for all parameters (p< 0.05). Rembrandt Plus promoted the greatest changes, followed by Listerine and Oral B.

KEY WORDS: Nanofill-nanohybrid composites, bleaching, mouthrinses

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£15.00
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Page Start
104
Page End
108
Authors

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Change in the Number of Occlusal Contacts Following Splint Therapy in Patients with a Temporomandibular Disorder (TMD)
  2. 98
  3. 103

  1. The Effect of Three Different Mouthrinses on the Surface Hardness, Gloss and Colour Change of Bleached Nano Composite Resins
  2. 104
  3. 108

  1. Vertical Marginal and Internal Adaptation of All-ceramic Copings made by CAD/CAM Technology.
  2. 109
  3. 115

  1. Fibre reinforcement enhances bonding of Soft Lining to Acrylic Dental and Maxillofacial Prostheses
  2. 116
  3. 121

  1. Irreversible Hydrocolloid as a Test Food in Complete Denture Wearers
  2. 122
  3. 127

  1. An Audit of Letters of Referral to a Prosthodontic Department in a Dental Teaching Hospital.
  2. 128
  3. 131

  1. Effect of GC METALPRIMER II on Bond Strength of Heat-Cured Acrylic Resin to Titanium Alloy (Ti-6Al-4V) with Two Different Surface Treatments
  2. 132
  3. 137

  1. Book Reviews
  2. 138
  3. 141

  1. Frechette Awards
  2. 142
  3. 142