European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
June 2010
Electronic ISSN:
0965-7452
Vol:
18
Issue:
2

The Heat Emitted from Some Qth and Led Light Curing Units in Consecutive Activations A Laboratory Assessment

Abstract - The temperature rises produced by two Quartz-Tungsten-Halogen (QTH) bulb and four solid-state light emitting diode (LED) light curing units (LCU’s) was measured on five separate occasions following (i) activation for 40 seconds and (ii) three consecutive activations of 40 seconds. For both periods of activation evaluated the Luxor QTH LCU exhibited significantly (P < 0.01) lower temperature rises (1.2 (0.2) – 2.5 (0.4) oC) than all other LCU’s. In the case of the consecutive applications the temperature rises, for the other units, exceeded known threshold temperatures for pulpitis to be risked.

Key words: restorative dentistry, resin Composite, Light curing units, temperature rise.

Article Price
£15.00
Institution Article Price
£
Page Start
66
Page End
69
Authors
Felicity Borrie, R Graham Chadwick

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Influence of Thermomechanical Fatigue Loading on the Fracture Resistance of All-ceramic Posterior Crowns
  2. 50
  3. 54

  1. Fabrication of a Fixed Provisional Implant Restoration A Report of Three Cases
  2. 55
  3. 59

  1. Tensile Strength of Laser Welded Cobalt-Chromium Alloy With and Without an Argon Atmosphere
  2. 60
  3. 65

  1. The Heat Emitted from Some Qth and Led Light Curing Units in Consecutive Activations A Laboratory Assessment
  2. 66
  3. 69

  1. Marginal Behaviour of Self-etch Adhesive/composite and Combined Amalgam-composite Restorations
  2. 70
  3. 77

  1. Three-Dimensional Positional Changes of Teeth Adjacent to Posterior Edentulous Spaces in Relation to Age at Time of Tooth Loss and Elapsed Time
  2. 78
  3. 83

  1. Temperature Rise During Intraoral Polymerization of Self-Cured Hard Denture Base Liners
  2. 84
  3. 88

  1. Colour Stability, Opacity and Cross-Link Density of Composites Submitted to Accelerated Artificial Aging
  2. 89
  3. 93

  1. Book Reviews
  2. 94
  3. 95