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
Summary
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).
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.