적외선 열화상장치를 이용한 열연화 거타퍼차 근관충전재료와 주입기의 온도 평가
Temperature Evaluation of Thermoplastic Gutta-percha Obturation Materials and Injection Gun Device by Infrared Thermographic Method
문현주, 김민강, 최해림, 김해영, 송호준, 박영준,
소속 상세정보
문현주 ( Moon Hyun-Joo ) - 전남대학교 치의학전문대학원 치과재료학교실
김민강 ( Kim Min-Kang ) - 전남대학교 치의학전문대학원 치과재료학교실
최해림 ( Choi Hae-Rim ) - 전남대학교 치의학전문대학원 치과재료학교실
김해영 ( Kim Hae-Young ) - 전남대학교 치의학전문대학원 치과재료학교실
송호준 ( Song Ho-June ) - 전남대학교 치의학전문대학원 치과재료학교실
박영준 ( Park Young-Jun ) - 전남대학교 치의학전문대학원 치과재료학교실
KMID : 1035320140410030223
Abstract
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 160oC and 200oC. 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 57.5-88.4oC at 160oC 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 200oC 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.
키워드
Complex viscosity; Emissivity; Infrared thermography; Injectable gutta-percha technique; Temperature
원문 및 링크아웃 정보
등재저널 정보