Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, Minneapolis, USA.
BMC Oral Health. 2024 Jul 13;24(1):784. doi: 10.1186/s12903-024-04518-w.
This study aimed to assess the quality of various obturation techniques to fill perforation caused by internal root resorption using Micro-computed Tomography.
Cone-beam computed tomography images of a maxillary central incisor tooth with perforating internal resorptive defect were used to create a 3D printed model of the affected tooth. The replicas were divided into four groups based on the obturation technique used. The techniques included Group 1: a polydimethylsiloxane-based sealer (GuttaFlow-2) with gutta-percha. Group 2: same as Group 1 except for using a pre-mixed Bioceramic-based sealer (NeoSEALER Flo). Group 3: the defect was filled entirely using the NeoSealer Flo Bioceramic-based sealer. Group 4: the samples were obturated using the warm vertical compaction technique with a resin-based sealer (ADSeal). The resin models were then scanned a micro-computed scanner to evaluate the percentage of voids in each group.
The results showed that NeoSEALER Flo groups had significantly the highest volume of voids while GuttaFlow-2 and warm vertical compaction groups had the lowest void volume.
GuttaFlow-2 and warm vertical compaction techniques performed best in filling the internal resorptive defect.
本研究旨在使用微计算机断层扫描评估各种根管封闭技术对内部根吸收引起的穿孔的填充质量。
使用锥形束计算机断层扫描图像对上颌中切牙的穿孔内部吸收缺陷牙制作 3D 打印模型。根据使用的封闭技术将副本分为四组。技术包括：第 1 组：基于聚二甲基硅氧烷的密封剂（GuttaFlow-2）与牙胶。第 2 组：与第 1 组相同，只是使用预混合的基于生物陶瓷的密封剂（NeoSEALER Flo）。第 3 组：使用基于 NeoSealer Flo 生物陶瓷的密封剂完全填充缺陷。第 4 组：使用树脂基密封剂（ADSeal）进行温热垂直压实技术进行样本封闭。然后使用微计算机断层扫描仪扫描树脂模型，以评估每个组的空隙百分比。
结果表明，NeoSEALER Flo 组的空隙体积最大，而 GuttaFlow-2 和温热垂直压实组的空隙体积最小。
GuttaFlow-2 和温热垂直压实技术在填充内部吸收缺陷方面表现最佳。
