1Ninavah Health Directorate, Mosul, Iraq.
2Department of conservative dentistry, University of Mosul, Mosul, Iraq.
Georgian Med News. 2023 Jul-Aug(340-341):122-130.
Endodontic failure can result from insufficient coronal seal, which induces post-endodontic infections. Therefore, the intra-orifice barrier is a reliable substitute technique to reduce coronal leakage in teeth where endodontic therapy has been performed. Aim - to evaluate the effect of three different restorative materials (Ever X Flow, Centeno forte, and Bio-C sealer ION) as intraorifice barriers (IB) of endodontic ally-treated teeth on Coronal microleakage represented by Internal adaptation of barrier materials to radicular dentin and Porosity of materials. Forty-sound removed human mandibular premolars were chosen, and decorated to a standardized root length (15 ± 0.5mm), a digital caliper was used to measure the mesiodistal and buccolingual diameters of the coronal plane of root to roughly similar buccolingual (BL) and mesiodistal (MD) dimensions (7.5 ± 0.5mm and 4.5 ± 0.5 mm respectively) and the coronal plane of the root canal be approximately similar in buccolingual (BL) and mesiodistal (MD) dimension (3.2 ± 0.2 and 1.8 ± 0.2 mm respectively). The roots were prepared and obdurate with gutta-percha and AH Plus sealer, then divided into one control group to three equal groups according to the type of intraorifice materials (n=10). Except for the control group, the coronal 3-mm of gutta-percha was removed and filled with Ever X Flow, Cention forte, and Bio-C sealer ION. After this, all groups underwent thermo-cycling ageing (1000 cycles, water temperature (5-55oC), dwell time 30s, and transfer (draining) time 10s between cycles). With micro-computed tomography (µCT), three-dimensional gap volumes at the barrier-dentin contact and the porosity of the barrier materials were investigated. The results showed a significant difference between the control and three types of barrier materials at (P 0.05); Ever X Flow demonstrated lower values of the internal gap of barrier materials to radicular dentin and porosity while the control demonstrated higher values of the internal gap to radicular dentin; however, there was no significant difference between the control and Bio-C sealer ION. When compared to teeth treated with endodontics but without intraorifice barriers (IOB), those with IOB have less coronal microleakage.
牙本质内微渗漏会导致根管治疗失败，而牙本质内微渗漏主要是由于冠部封闭不完全导致的，因此，在进行根管治疗的牙齿中使用牙本质内封闭剂（IOB）是一种可靠的减少牙本质内微渗漏的替代技术。本研究的目的是评估三种不同的修复材料（Ever X Flow、Centeno forte 和 Bio-C sealer ION）作为牙本质内封闭剂（IOB）对根管治疗后牙齿的冠部微渗漏的影响，以评估其对牙本质内封闭剂与根管牙本质内的内部适应和材料的孔隙率的影响。本研究共选择了 40 颗离体下颌前磨牙，修整至标准化的根长（15 ± 0.5mm），使用数字卡尺测量根尖平面的近远中径和颊舌径，大致相似的颊舌（BL）和近远中（MD）尺寸（分别为 7.5 ± 0.5mm 和 4.5 ± 0.5mm），根管的根尖平面在颊舌（BL）和近远中（MD）方向上的尺寸大致相似（分别为 3.2 ± 0.2mm 和 1.8 ± 0.2mm）。根管用牙胶和 AH Plus 密封剂进行预备和硬固，然后根据牙本质内材料的类型将其分为一个对照组和三个相等的组（每组 10 个）。除对照组外，将冠部 3mm 的牙胶去除并用 Ever X Flow、Cention forte 和 Bio-C sealer ION 填充。然后，所有组都进行热循环老化（1000 个循环，水温（5-55°C），停留时间 30s，循环之间的转移（排空）时间为 10s）。通过微计算机断层扫描（µCT），研究了屏障-牙本质接触处的三维间隙体积和屏障材料的孔隙率。结果显示，在对照组和三种屏障材料之间存在显著差异（P 0.05）；Ever X Flow 显示出较低的牙本质内封闭剂与根管牙本质的内部间隙值和孔隙率，而对照组则显示出较高的牙本质内封闭剂与根管牙本质的内部间隙值；然而，对照组与 Bio-C sealer ION 之间没有显著差异。与未经牙本质内封闭剂（IOB）处理的根管治疗后的牙齿相比，使用 IOB 的牙齿的牙本质内微渗漏更少。
