Effect of therapeutic fractionated radiotherapy on bond strength and interfacial marginal adaptation of Adseal, MTA Fillapex, and EndoSequence BC sealer: An in vitro study

Q3 Dentistry

Saudi Endodontic Journal Pub Date : 2022-09-01 DOI:10.4103/sej.sej_21_22

Monika Khangwal, R. Solanki, H. Rahman

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引用次数: 0

Abstract

Introduction: The study aimed to assess the impact of fractionated radiation on push-out bond strength of sealer to dentin interface and on marginal adaptation of the sealer (Adseal, MTA Fillapex, and EndoSequence BC sealer) to irradiated dentin. Materials and Methods: Ninety maxillary central incisors were randomly divided into two groups: with irradiation (n = 45) and without (n = 45). All the samples to be radiated were exposed to fractionated dosage (60 Gy) through Co-60 gamma (1.17 and 1.33 Mev) photons. Specimens were prepared and subdivided into three subgroups (n = 15 each) according to assigned sealer Adseal, MTA Fillapex, and EndoSequence BC sealer. Later, the samples were sectioned into a 1 mm thick segment at each root third for bond strength and scanning electron microscope (SEM) analysis. SEM micrographs were analyzed with an ORION version 6 image analyzer. The percentage of failure mode after debonding was evaluated with a stereomicroscope. Bond strength data were analyzed using two-way analysis of variance and the Tukey's post hoc test. Results: Bond strength was significantly (P < 0.0001) decreased after radiotherapy (0.76 ± 0.12 Mpa) versus without radiation (0.93 ± 0.18 Mpa). Furthermore, when the pooled average of sealers was compared, significantly highest bond strength was perceived in Adseal (0.98 ± 0.18 Mpa) followed by EndoSequence BC (0.84 ± 0.13 Mpa). Coronal sections showed significantly (P < 0.0001) higher bond strength (0.99 ± 0.16 Mpa) compared to the middle (0.81 ± 0.14 MPa) and apical third (0.74 ± 0.12 Mpa). Qualitative SEM revealed a higher interfacial gap between sealer and irradiated radicular dentin. The percentage of mean change was recorded significantly high in MTA Fillapex (52%), then in EndoSequence BC (31%), and least was in Adseal (17%). Conclusions: Irradiated teeth resulted in consequential decreased adhesiveness and bond strength of dentin to root canal filling material. In addition, the highest bond strength was noticed in Adseal.

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治疗性分割放疗对Adseal、MTA Fillapex和EndoSequence BC密封剂的结合强度和界面边缘适应性的影响:一项体外研究

简介:本研究旨在评估分次辐射对密封剂与牙本质界面的推出结合强度的影响，以及密封剂(Adseal、MTA Fillapex和EndoSequence BC密封剂)对辐照牙本质的边际适应性。材料与方法:90个上颌中切牙随机分为辐照组(n = 45)和未辐照组(n = 45)。所有待辐射样品均通过Co-60 γ(1.17和1.33 Mev)光子暴露于分级剂量(60 Gy)下。根据指定的封印器Adseal、MTA Fillapex和EndoSequence BC封印器，准备标本并将其细分为三个亚组(每组n = 15)。然后，将样品在每根三分之一处切成1mm厚的段，进行键合强度和扫描电镜(SEM)分析。SEM显微图像用ORION版本6图像分析仪进行分析。用体视显微镜评估脱粘后失效模式的百分比。结合强度数据采用双向方差分析和Tukey事后检验进行分析。结果:与未放疗(0.93±0.18 Mpa)相比，放疗后黏结强度(0.76±0.12 Mpa)明显降低(P < 0.0001)。此外，当比较封闭剂的综合平均值时，Adseal的结合强度最高(0.98±0.18 Mpa)，其次是EndoSequence BC(0.84±0.13 Mpa)。冠状面粘接强度(0.99±0.16 Mpa)明显高于中部(0.81±0.14 Mpa)和根尖三分之一(0.74±0.12 Mpa) (P < 0.0001)。定性扫描电镜显示封闭剂与辐照根状牙本质之间有较大的界面间隙。MTA Fillapex的平均变化百分比最高(52%)，其次是EndoSequence BC (31%)， Adseal的平均变化百分比最低(17%)。结论:辐照后的牙本质与根管充填材料的黏附性和结合强度下降。此外，Adseal的粘结强度最高。

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来源期刊

Saudi Endodontic Journal Dentistry-Dentistry (all)

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

32 weeks

期刊介绍： Vision SEJ aims to be one of the foremost worldwide periodical on Endodontics, dedicated to the promotion of research, post-graduate training and further education in Endodontics. Mission Statement To serve as a medium for continued Endodontic education and qualitative scientific publications on clinical trials, basic science related to the biological aspects of Endodontics, basic science related to Endodontic techniques as well as dental trauma that will ultimately improve the Endodontic research and patient’s health. Scope In this journal, Endodontists, Endodontic postgraduate students and general dentists, can learn about new concepts in root canal treatment and the latest advances in techniques and instrumentation that help them keep pace with rapid changes in this field. Aims and Objectives To publish cut edge peer-review original articles, case reports, letters to the editor, editorials, review articles, commentaries, and innovations that will impact on Endodontics. To enhance exchange of ideas/information relating to Endodontics and interaction among stakeholders. To encourage networking and partnership between individuals, government and non-governmental organizations for the provision of quality health care. To advocate for training, workshops, seminars, scientific manuscript writing conferences that will advance publishing culture.