PDF(Pubmed)
Abstract：
This study evaluated the effect of ultrasonic agitation on the filling capacity of ready-to-use calcium silicate-based sealer Bio-C Sealer (BCS, Angelus, Paraná, Brazil) or powder-liquid BioRoot RCS (BR, Septodont, Saint-Maur-des-Fossés, France) using curved artificial canals by micro-computed tomography (micro-CT). Additionally, flow (mm) and flow area (mm2) were evaluated for both materials. Acrylic resin main canal (60° curvature and 5 mm radius, with 3 lateral canals in the cervical, middle, and apical thirds) were prepared up to size 40/.05 (Prodesign Logic, Brazil). The agitation method was used with ultrasonic tip (US, Irrisonic, Helse, Brazil): BCS, BCS/US, BR, and BR/US. All specimens were filled using the single-cone technique. The samples were scanned by micro-CT (8,74 µm) after obturation. The percentage of filling material and voids were calculated. Flow was evaluated based on ISO 6876/2012 standards (mm) and area (mm2). The data were statistically analyzed using ANOVA and Tukey tests (α = 0.05). BR/US showed lower percentage of filling material in the lateral canals than and, BCS/US (p<0.05). BR/US resulted in a higher percentage of voids than BR in the lateral apical third (p<0.05). BCS showed higher flow than BR (p<0.05). BCS and BR presented proper filling capacity in the simulated curved canals regardless of the use of ultrasonic agitation. However, BR/US showed more voids in the apical third. BCS demonstrates higher filling ability.
摘要：
本研究评估了超声波搅拌对即用型硅酸钙基封口机Bio-C封口机(BCS，Angelus,巴拉那,巴西)或粉末液体BioRootRCS(BR，Septodon,Saint-Maur-des-Fossés,法国）通过微型计算机断层扫描（micro-CT）使用弯曲的人造运河。此外,评估两种材料的流动(mm)和流动面积(mm2)。丙烯酸树脂主管道(曲率60°,半径5mm,颈椎有3条外侧管，中间,和顶端三分之一)的大小为40/.05(ProdesignLogic，巴西)。搅拌方法与超声波尖端一起使用(美国，Irrisonic,她，巴西）：BCS，BCS/US,BR,BR/US使用单锥体技术填充所有样本。在闭塞后通过显微CT(8,74μm)扫描样品。计算填充材料和空隙的百分比。基于ISO6876/2012标准(mm)和面积(mm2)评价流量。使用ANOVA和Tukey检验对数据进行统计学分析(α=0.05)。BR/US显示外侧运河中填充材料的百分比低于和，BCS/US(p<0.05)。BR/US在侧顶三分之一中导致比BR更高的空隙百分比(p<0.05)。BCS显示出比BR更高的流量(p<0.05)。无论使用超声搅拌，BCS和BR在模拟弯曲的运河中都具有适当的填充能力。然而,BR/US在顶端三分之一处显示出更多的空隙。BCS表现出更高的填充能力。
