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目的:测定Trifecta热牙胶根管充填系统根充时牙根表面温度的变化。方法:选取因牙周炎等拔除的上下颌单根管中切牙26颗,用Tri-fecta技术进行根管充填。用红外成像仪跟踪监测整个根充过程中牙根表面温度的变化。结果:牙根表面温度根充后比根充前上颌中切牙平均升高6.6℃,下颌中切牙平均升高8.0℃,均低于引起周围组织损伤的理论阈值温度10℃。结论:本研究表明Trifecta热牙胶根充系统根充时会引起上、下颌中切牙牙根表面温度升高,但不会造成牙周组织及其周围组织的损伤。
OBJECTIVE: To determine the change of root surface temperature during root filling of Trifecta hot tooth gel root canal filling system. Methods: Twenty-six incisors of the maxillary and mandibular single-root canal extracted from periodontitis were selected and root canal filled with Tri-fecta technique. An infrared imager was used to track and monitor changes in root surface temperature throughout the root filling. RESULTS: Root root surface temperature increased by 6.6 ℃ on average after rooting than that before rooting, and average central mandibular incisors increased by 8.0 ℃, which were all lower than the theoretical threshold temperature of 10 ℃ which caused peripheral tissue damage. CONCLUSIONS: This study shows that root-filling of Trifecta hot dentin can cause elevated root and root temperatures of the mandibular incisors without damaging the periodontal and surrounding tissues.