Tanomaru-Filho Mario, Torres Fernanda Ferrari Esteves, Pinto Jader Camilo, Santos-Junior Airton Oliveira, Tavares Karina Ines Medina Carita, Guerreiro-Tanomaru Juliane Maria
Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araraquara, SP, Brazil.
Restor Dent Endod. 2020 Jun 9;45(3):e34. doi: 10.5395/rde.2020.45.e34. eCollection 2020 Aug.
This study evaluated by using micro-computed tomography (micro-CT) the filling ability and sealer apical extrusion promoted by a new Sealer Injection System (SIS; Angelus) with side openings needle, in comparison with the conventional injection system, associated with a new ready-to-use calcium silicate-based sealer (Bio-C Sealer).
Acrylic resin models containing a main curved artificial canal and 3 simulated lateral canals in apical, middle and cervical thirds were used. The main root canals were prepared using a rotary system up to size 35.05. The canals were filled with Bio-C sealer by using a single cone technique and the conventional delivery system or SIS. Samples were scanned in micro-CT. The percentage of voids throughout the entire extension of the main root canal and in each third of the lateral canals, besides the apical extrusion of the sealer was calculated. Data were submitted to -test ( < 0.05).
There was no difference between both systems in the main root canals filling. Although the volume percentage of voids was similar in the apical and middle thirds of lateral canals, SIS had the greatest filling ability of the cervical third lateral canal. Moreover, the conventional system showed the highest apical extrusion of the sealer.
The conventional and SIS obturation systems had an appropriate filling ability of the main root canal. SIS had the best filling of the cervical third of the lateral canals, besides lower sealer apical extrusion, suggesting its clinical indication.
本研究通过微计算机断层扫描（micro-CT）评估一种带有侧孔针的新型封闭剂注射系统（SIS；安吉利斯公司）与传统注射系统相比，在使用一种即用型硅酸钙基封闭剂（Bio-C封闭剂）时促进的充填能力和封闭剂根尖挤出情况。
使用含有一条主要弯曲人工根管以及在根尖、中部和颈部三分之一处3条模拟侧支根管的丙烯酸树脂模型。使用旋转系统将主根管预备至35.05号。采用单锥技术并使用传统输送系统或SIS用Bio-C封闭剂充填根管。样本进行微CT扫描。计算主根管整个长度以及侧支根管各三分之一段内的空隙百分比，以及封闭剂的根尖挤出量。数据采用t检验（P<0.05）。
两种系统在主根管充填方面无差异。尽管侧支根管根尖和中部三分之一段的空隙体积百分比相似，但SIS在侧支根管颈部三分之一段的充填能力最强。此外，传统系统的封闭剂根尖挤出量最高。
传统和SIS充填系统对主根管具有适当的充填能力。SIS对侧支根管颈部三分之一段的充填效果最佳，且封闭剂根尖挤出量较低，表明其具有临床应用价值。
