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[Real temperature of the continuous-wave pluggers].

Wei Qu1, Wei Bai2, Yu-hong Liang3

  • 1Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing 100081, China.

Beijing Da Xue Xue Bao. Yi Xue Ban = Journal of Peking University. Health Sciences
|October 18, 2015
PubMed
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Continuous-wave plugger temperatures often fall below the set 200°C, with significant heat loss along the plugger. This impacts thermal damage assessments for dental filling materials.

Area of Science:

  • Dental Materials Science
  • Endodontics
  • Thermal Analysis

Background:

  • Continuous-wave (CW) devices are used for root canal filling.
  • Accurate plugger tip temperature is crucial for effective thermal condensation and to prevent tissue damage.
  • Previous studies lack precise temperature measurements on CW pluggers.

Purpose of the Study:

  • To measure the actual temperatures on pluggers of three CW devices.
  • To provide data for evaluating thermal damage and heat's effect on filling materials.

Main Methods:

  • Thermocouple measurements on pluggers from BeeFill, Elements, and B&L devices at preset 200°C.
  • Temperatures recorded at tip, 2mm, 5mm, and 10mm from the tip.
  • Statistical analysis using T-test and one-way ANOVA.

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Main Results:

  • Highest tip temperature (198.7±7.7°C) on BeeFill 40/0.03, not statistically different from 200°C.
  • Other pluggers showed significantly lower temperatures (P<0.05).
  • Temperatures decreased with distance from the tip, reaching as low as 69.9±4.0°C (BeeFill 60/0.06 at 10mm).

Conclusions:

  • Most CW pluggers operate below their set temperature.
  • Significant temperature drop occurs along the plugger length.
  • Findings necessitate re-evaluation of thermal damage potential and material behavior.