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Related Experiment Videos

Radicular temperatures associated with thermoplasticized gutta-percha.

T L Sweatman1, J C Baumgartner, R L Sakaguchi

  • 1School of Dentistry, Oregon Health Sciences University, Portland 97201, USA.

Journal of Endodontics
|August 15, 2001
PubMed
Summary
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This study measured root canal temperatures during thermoplasticized gutta-percha obturation. System B, Obtura II, and ultrasonic methods did not exceed 10°C external root surface temperature increase.

Area of Science:

  • Endodontics
  • Dental Materials Science
  • Biomedical Engineering

Background:

  • Thermoplasticized gutta-percha is widely used for root canal obturation.
  • The continuous wave of condensation technique, utilizing the System B Heat Source, is a common method.

Purpose of the Study:

  • To measure internal and external root canal temperatures during obturation with the System B Heat Source.
  • To compare temperatures generated by System B with Obtura II and ultrasonic lateral compaction.

Main Methods:

  • System B Heat Source with Fine, Fine-Medium, and Medium pluggers at 200°C, 250°C, and 300°C.
  • Comparison with Obtura II and ultrasonic lateral compaction techniques.
  • Temperature measurements at different radicular levels (0 mm and 6 mm coronal to working length).

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Main Results:

  • The highest internal root surface temperature increase was 74.19°C (System B, Fine-Medium plugger, 300°C, 6 mm level).
  • The lowest internal temperature increase was 2.09°C (System B, Fine plugger, 200°C, 0 mm level).
  • External root surface temperature increase never exceeded 10°C for any tested method.

Conclusions:

  • System B can generate significant internal root canal temperatures, varying with plugger size and settings.
  • Obtura II and ultrasonic methods produced lower internal temperatures compared to System B.
  • All tested methods maintained safe external root surface temperatures, crucial for preventing tissue damage.