Comparative Evaluation of Push-out Bond Strength of Conventional Mineral Trioxide Aggregate, Biodentine, and Two Novel Antibacterial-enhanced Mineral Trioxide Aggregates.
Arokia Rs Merlin, Vignesh Ravindran, Ganesh Jeevanandan, Prabhadevi C Maganur, Suman Panda, Ather A Syed, Sara Kalagi, Aram AlShehri, Sanjeev Khanagar, Satish Vishwanathaiah
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引用次数: 0
Abstract
Aim: To evaluate the push-out bond strength of two newly modified mineral trioxide aggregates (MTAs) with conventional MTA and biodentine.
Materials and methods: Material preparation: Two commercially available bioactive bioceramics: Group I: Mineral trioxide aggregate; Group II: Biodentine; and two newly formulated modified MTAs: Group III: Doxycycline incorporated MTA formulation; Group IV: Metronidazole incorporated MTA formulation was used in the present study. All the test materials were then carried using a plastic instrument to the desired experimental design. Teeth sample preparation: A total of 120 teeth samples were collected and divided into four groups of test materials with 30 teeth samples per group. Single-rooted permanent teeth, that is, incisors were collected and stored in saline until the study was performed. Sectioning of the teeth into 2.0 ± 0.05-mm thick slices was performed perpendicular to the long axis of the tooth. The canal space was instrumented using Gates Glidden burs to achieve a diameter of 1.5 mm. All four prepared materials were mixed and placed in the lumen of the slices and placed in an incubator at 37°C for 72 hours. Push-out test and bond failure pattern evaluation: The push-out test was performed using a universal testing machine. The slices were examined under a scanning electron microscope (SEM) at 40× magnification to determine the nature of bond failure. All the collected data were recorded and statistically analyzed.
Results: The mean push-out bond strength was found to be the highest for group II (37.38 ± 1.94 MPa) followed by group III (28.04 ± 2.22 MPa) and group IV (27.83 ± 1.34 MPa). The lowest mean push-out bond strength was noticed with group I (22.89 ± 2.49 MPa). This difference was found to be statistically significant (p = 0.000). Group I samples had the predominantly adhesive type of failure (86.4%), while group II samples showed the cohesive type of failure (94.2%). Both the modified MTAs (groups III and IV) primarily showed mixed types of failures.
Conclusion: Both the antibacterial-enhanced MTAs had better pushout bond strength compared to conventional MTA but did not outperform biodentine. Hence, it could serve as a substitute for conventional MTA due to its augmented physical properties.
Clinical significance: Carious pulp exposure and nonvital open apices pose a critical challenge to pediatric dental practitioners. In such circumstances, maintaining the vitality of pulp and faster healing would help in a better prognosis. Novel MTAs without any cytotoxic components, and enhanced antibacterial contents with augmented physical properties can help in treating such clinical conditions. How to cite this article: Merlin ARS, Ravindran V, Jeevanandan G, et al. Comparative Evaluation of Push-out Bond Strength of Conventional Mineral Trioxide Aggregate, Biodentine, and Two Novel Antibacterial-enhanced Mineral Trioxide Aggregates. J Contemp Dent Pract 2024;25(2):168-173.
目的:评估两种新改性的三氧化二铝矿物骨料(MTA)与传统 MTA 和生物碱的推出粘接强度:材料和方法:材料制备:两种市售生物活性生物陶瓷:材料:材料制备:两种市售生物活性生物陶瓷:第一组:三氧化物矿物骨料;第二组:生物丹;以及两种新配制的改性MTA:第三组:多西环素混合 MTA 配方;第四组:甲硝唑混合 MTA 配方。然后使用塑料仪器将所有测试材料搬运到所需的实验设计中。牙齿样本制备:共收集 120 颗牙齿样本,分为四组,每组 30 颗。收集单根恒牙,即门牙,并保存在生理盐水中,直到研究开始。将牙齿切成 2.0 ± 0.05 毫米厚的切片,垂直于牙齿长轴。使用盖茨-格利登车针对牙髓腔进行器械操作,使其直径达到 1.5 毫米。将所有四种制备好的材料混合并放入切片的管腔中,然后放入 37°C 的培养箱中培养 72 小时。推出试验和粘接失败模式评估:使用万能试验机进行挤压试验。切片在 40 倍放大率的扫描电子显微镜(SEM)下进行检查,以确定粘接破坏的性质。所有收集到的数据都进行了记录和统计分析:发现第二组的平均推出粘接强度最高(37.38 ± 1.94 兆帕),其次是第三组(28.04 ± 2.22 兆帕)和第四组(27.83 ± 1.34 兆帕)。第一组的平均推出粘接强度最低(22.89 ± 2.49 兆帕)。这一差异具有显著的统计学意义(p = 0.000)。第一组样品的破坏类型主要是粘合型(86.4%),而第二组样品的破坏类型则是内聚型(94.2%)。改良型 MTA(III 组和 IV 组)主要表现为混合型失败:结论:与传统 MTA 相比,两种抗菌增强型 MTA 都具有更好的推出粘接强度,但并不优于生物碱。因此,由于其增强的物理特性,它可以作为传统 MTA 的替代品:临床意义:龋坏的牙髓暴露和无活力的开放性根尖给儿童牙科医生带来了严峻的挑战。在这种情况下,保持牙髓的活力并加快愈合将有助于改善预后。不含任何细胞毒性成分、抗菌成分更强、物理性质更好的新型 MTA 有助于治疗此类临床病症。本文引用方式Merlin ARS, Ravindran V, Jeevanandan G, et al. Conventional Mineral Trioxide Aggregate, Biodentine and Two Novel Antibacterial-enhanced Mineral Trioxide Aggregates of Push-out Bond Strength of Conventional Mineral Trioxide Aggregate, Biodentine, and Two Novel Antibacterial-enhanced Mineral Trioxide Aggregates.J Contemp Dent Pract 2024;25(2):168-173.
期刊介绍:
The Journal of Contemporary Dental Practice (JCDP), is a peer-reviewed, open access MEDLINE indexed journal. The journal’s full text is available online at http://www.thejcdp.com. The journal allows free access (open access) to its contents. Articles with clinical relevance will be given preference for publication. The Journal publishes original research papers, review articles, rare and novel case reports, and clinical techniques. Manuscripts are invited from all specialties of dentistry i.e., conservative dentistry and endodontics, dentofacial orthopedics and orthodontics, oral medicine and radiology, oral pathology, oral surgery, orodental diseases, pediatric dentistry, implantology, periodontics, clinical aspects of public health dentistry, and prosthodontics.