Suguro Hisashi, Takeichi Osamu, Hayashi Makoto, Okamura Teinosuke, Hira Akiko, Hirano Yoriyuki, Ogiso Bunnai
Department of Endodontics, Nihon University School of Dentistry.
Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry.
J Oral Sci. 2018 Jun 20;60(2):165-169. doi: 10.2334/josnusd.17-0092. Epub 2018 Apr 16.
Transparent epoxy resin root canal models were used to evaluate vertical condensation techniques for obturating lateral canals. The root canal model was configured with a straight main root canal and four right-angled lateral canals at 1.0 and 3.0 mm from the apex. Root canal obturation was performed with Thermafil, Obtura II, or NT condenser. Obturation volume in lateral canals was measured by three-dimensional microcomputed tomography, and one-way analysis of variance was used to analyze differences between groups. Lateral canals at 1.0 and 3.0 mm were uniformly filled by all obturation methods. Among the three obturation methods, Thermafil resulted in the highest obturation volumes for all lateral canals.
使用透明环氧树脂根管模型来评估用于充填侧支根管的垂直加压技术。根管模型配置有一条直的主根管以及在距根尖1.0和3.0毫米处的四条直角侧支根管。采用热牙胶充填系统（Thermafil）、Obtura II或NT充填器进行根管充填。通过三维显微计算机断层扫描测量侧支根管内的充填体积，并采用单因素方差分析来分析各组之间的差异。所有充填方法均能均匀充填1.0和3.0毫米处的侧支根管。在这三种充填方法中，热牙胶充填系统对所有侧支根管的充填体积最大。
