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Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments
Published on: July 30, 2007
Temperature changes caused by light curing units on dentine of primary teeth
A Melara Munguía1, M Arregui Gambús, F Guinot Jimeno
1Department of Paediatric Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain.
European Journal of Paediatric Dentistry
|March 26, 2011
Summary
Conventional halogen lamps generate higher temperatures in dental restorative materials than LED lamps during photocuring. Microhybrid flow resin experienced the greatest temperature increase when cured with a halogen lamp.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Restorative Dentistry
Background:
- Photocuring is essential for dental restorative materials.
- Understanding temperature changes during photocuring is crucial for pulp protection.
- Different light sources and materials may influence thermal effects.
Purpose of the Study:
- To compare temperature increases in dentine discs under various dental restorative materials.
- To evaluate the impact of different light-curing units (halogen vs. LED) on temperature rise.
- To assess the influence of material type (glass ionomer, microhybrid flow resin, microhybrid resin) on temperature changes.
Main Methods:
- An in vitro study using dentine discs and stainless steel rings.
- Application of glass ionomer, microhybrid flow resin, or microhybrid resin.
- Photocuring with conventional halogen lamps and LEDs at varying distances.
- Temperature measurement using digital thermometers/thermocouples.
Main Results:
- Photocuring lamps significantly influenced temperature changes (p=0.00001).
- Halogen lamps produced higher temperatures compared to LED lamps.
- The highest temperature rise was observed with microhybrid flow resin cured by a halogen lamp.
Conclusions:
- Halogen lamps are associated with greater temperature increases than LED lamps during dental material photocuring.
- The type of restorative material and light source significantly affects the thermal outcome.
- Clinical consideration of light source and material choice is important to minimize pulpal thermal stress.
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