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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.9
- 수록면
- 223 - 231 (9page)
- DOI
- 10.14815/kjdm.2014.41.3.223
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The temperatures of commercially available eight thermoplastic gutta-percha (GP) materials and different positions of injection gun were measured while the materials were extruded from the Obtura injection gun set at 160℃ and 200℃. The complex viscosity values of the materials were evaluated at the designated temperatures. The in-situ temperatures were measured every 10 s for 30 s using an infrared thermal imaging camera. Calibration and reconstruction of the recorded images were performed by applying respective material emissivity values for each measured parts. Depending on the tested GP materials, mean temperature values of the extruded melts were ranged in 57.5-88.4℃ at 160℃ setting and 84.0-110.6oC at 200oC settings. Among the tested materials, the melt of Obtura showed the lowest melt temperature values at both temperature settings (p<0.05). The highest measured temperatures of the needle and needle-adapter parts of the injection gun were above 200℃ during the 30 s from the beginning of triggering action. Based on these results, the temperatures of gutta-percha melts were changed by both the heating temperature and the brand or viscosity-type of tested materials. The injectable gutta-percha technique should be performed with caution when using the heated injection gun device.
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ABSTRACT
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재료 및 방법
결과 및 고찰
결론
Reference
참고문헌 (24)
참고문헌 신청
1. [단행본] - 한국치과재료학 교수협의회 / 2006 / 치과재료학 / 군자출판사 : 79 ~
2. [단행본] - Bramson M / 1968 / Infrared radiation : a handbook for applications, with a collection of reference tables / Plenum Press
3. [학술지(정기간행물)] - 장주혜 / 2011 / 열연화주입형 gutta percha와 resilon의 유변학적 특성 / Restorative Dentistry and Endodontics 36 (5) : 377 ~ 384
4. [학술지(정기간행물)] - Eriksson A / 1983 / Temperature threshold levels for heat-induced bone tissue injury: a vital-microscopic study in the rabbit / J Prosthet Dent 50 : 101 ~ 107
5. [학술지(정기간행물)] - Friedman CE / 1977 / Composition and physical properties of gutta-percha endodontic filling materials / J Endod 3 : 304 ~ 308
2. [단행본] - Bramson M / 1968 / Infrared radiation : a handbook for applications, with a collection of reference tables / Plenum Press
3. [학술지(정기간행물)] - 장주혜 / 2011 / 열연화주입형 gutta percha와 resilon의 유변학적 특성 / Restorative Dentistry and Endodontics 36 (5) : 377 ~ 384
4. [학술지(정기간행물)] - Eriksson A / 1983 / Temperature threshold levels for heat-induced bone tissue injury: a vital-microscopic study in the rabbit / J Prosthet Dent 50 : 101 ~ 107
5. [학술지(정기간행물)] - Friedman CE / 1977 / Composition and physical properties of gutta-percha endodontic filling materials / J Endod 3 : 304 ~ 308
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