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Related Experiment Videos

Pulp chamber temperature changes with visible-light-cured composites in vitro.

H E Goodis1, J M White, B Gamm

  • 1Department of Restorative Dentistry, University of California, San Francisco 94148-0758.

Dental Materials : Official Publication of the Academy of Dental Materials
|April 1, 1990
PubMed
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Dental pulp is vulnerable to heat during composite restoration procedures. This study found that visible-light-cure lamps vary in the heat they generate, with one lamp causing significantly lower temperature increases in the pulp chamber.

Area of Science:

  • Dentistry
  • Biomaterials
  • Dental Pulp Physiology

Background:

  • The dental pulp's low compliance makes it susceptible to damage during dental procedures.
  • Temperature increases within the pulp tissue, potentially caused by restorative techniques, are a significant concern.

Purpose of the Study:

  • To measure the temperature increase in the pulp chamber during the placement of a two-surface posterior composite restoration.
  • To compare the thermal effects of six different visible-light-cure lamps on dental pulp.

Main Methods:

  • A two-surface posterior composite restoration was placed.
  • Six different visible-light-cure lamps were utilized to cure the composite.
  • Pulp chamber temperature increases were systematically measured for each lamp.

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Main Results:

  • Significant variations in temperature increase were observed among the tested visible-light-cure lamps.
  • The majority of the temperature rise occurred during the initial layer of composite placement.
  • One specific visible-light-cure lamp demonstrated markedly lower temperature increases compared to others.

Conclusions:

  • Visible-light-cure lamps differ in their potential to elevate dental pulp temperature.
  • The initial composite layer contributes most to thermal changes.
  • Selecting appropriate light-curing equipment, such as the identified lower-heat-emitting lamp, may mitigate risks to the dental pulp.