Kim Sin-Young, Jang Young-Eun, Kim Bom Sahn, Pang Eun-Kyoung, Shim Kiche, Jin Hye Ryeon, Son Min Kyung, Kim Yemi
Department of Conservative Dentistry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea.
Department of Conservative Dentistry, College of Medicine, Ewha Womans University, Seoul 07986, Korea.
Materials (Basel). 2021 Mar 8;14(5):1292. doi: 10.3390/ma14051292.
We evaluated the effects of ultrasonic activation on root canal filling quality of the single-cone (SC) obturation technique with calcium silicate sealers and gutta percha cones.
Thirty-six human single-rooted premolars were obturated with gutta percha and sealer. For the continuous wave (CW) group (n = 12), AH Plus with a continuous wave technique was used. The SC group (n = 12) received EndoSequence BC sealer with a single-cone technique. The SCU (SC with the addition of ultrasonic activation) group (n = 12) received the same treatment. Micro-computed tomography was used to scan the teeth, and the void volume within the root canal was evaluated at the apical, middle, and coronal levels. Then cross-sections were observed under a light microscope and scanning electron microscope (SEM).
Void volume was significantly lower in the SCU group than in the CW and SC groups. There were no statistically significant differences between the CW and SC groups. The SCU group had fewer voids than the CW and SC groups in the coronal and middle third areas. Specimens showed no apparent gaps or voids in any group. SEM images revealed both gap-free and gap-containing regions at different levels in all groups.
Single-cone obturation with calcium silicate-based sealers might obtain enhanced filling quality when used with ultrasonic activation.
我们评估了超声激活对使用硅酸钙封闭剂和牙胶尖的单锥（SC）充填技术根管充填质量的影响。
用牙胶和封闭剂对36颗人单根前磨牙进行充填。连续波（CW）组（n = 12）采用AH Plus和连续波技术。SC组（n = 12）采用EndoSequence BC封闭剂和单锥技术。SCU（添加超声激活的SC）组（n = 12）接受相同处理。使用微型计算机断层扫描对牙齿进行扫描，并在根尖、中部和冠部水平评估根管内的空隙体积。然后在光学显微镜和扫描电子显微镜（SEM）下观察横截面。
SCU组的空隙体积显著低于CW组和SC组。CW组和SC组之间无统计学显著差异。SCU组在冠部和中部三分之一区域的空隙比CW组和SC组少。所有组的标本均未显示明显的间隙或空隙。SEM图像显示所有组在不同水平均有无间隙和有间隙区域。
使用硅酸钙基封闭剂进行单锥充填并结合超声激活可能会提高充填质量。
