Matias Mederos, Elisa de León, Andrés García, Carlos Enrique Cuevas-Suárez, Juan Carlos Hernández-Cabanillas, José Alejandro Rivera-Gonzaga, Guillermo Grazioli
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引用次数: 0
Abstract
Objective: In this study, a comparative evaluation of the physicochemical properties of Cention N and other direct restorative materials was performed. Three restorative materials-a resin-modified glass ionomer (Fuji II LC), an alkasite-based resinous material (Cention N), and a resin composite (Tetric N Ceram)-were characterized in terms of degree of conversion, Knoop hardness number (KHN) ratio, flexural strength, elastic modulus, water sorption, water solubility, microshear bond strength to dentin, immediate microleakage, and radiopacity.
Methodology: The microshear bond strength to dentin and microleakage of Cention N were evaluated with and without the application of an adhesive system (Tetric N Bond Universal). A one-way ANOVA test was used to analyze the data in terms of degree of conversion, KHN ratio, water sorption, water solubility, microshear bond strength to dentin, and radiopacity. A two-way ANOVA test (carried out considering the material type and ethanol aging as factors) was used to analyze the data in terms of flexural strength and elastic modulus. The Kruskal-Wallis test was used to statistically analyze the data on microleakage. A significance level of α=0.05 was used for all tests.
Results: Fuji II LC was found to have the highest degree of conversion, water sorption, and microleakage, as well as the lowest flexural strength. Cention N had the highest solubility; when used with an adhesive system, it achieved bond strength and microleakage similar to those of the Tetric N Ceram composite. Tetric N Ceram had the highest degree of conversion, KHN ratio, and radiopacity. Conclusion: The properties of Cention N validate its efficacy as an alternative direct restorative material when used in conjunction with an adhesive system.
研究目的本研究对 Cention N 和其他直接修复材料的理化特性进行了比较评估。对三种修复材料--树脂改性玻璃离聚体（Fuji II LC）、碱金属基树脂材料（Cention N）和树脂复合材料（Tetric N Ceram）--的转化程度、努氏硬度数（KHN）比、抗弯强度、弹性模量、吸水性、水溶性、与牙本质的微剪切粘接强度、即刻微渗漏和透光性进行了表征：在使用和不使用粘合剂系统（Tetric N Bond Universal）的情况下，对 Cention N 与牙本质的微剪切粘接强度和微渗漏进行了评估。采用单因素方差分析检验对转化度、KHN 比值、吸水性、水溶性、与牙本质的微剪切粘接强度和射线不透性方面的数据进行分析。在分析抗折强度和弹性模量方面的数据时，采用了双向方差分析（将材料类型和乙醇老化作为因素）。Kruskal-Wallis 检验用于统计分析微渗漏数据。所有测试的显著性水平均为α=0.05：富士 II LC 的转化率、吸水率和微渗漏率最高，抗折强度最低。Cention N 的溶解度最高；与粘合剂系统一起使用时，其粘合强度和微渗漏性与 Tetric N Ceram 复合材料相似。Tetric N Ceram 的转换度、KHN 比率和辐射不透性最高。结论：Cention N 的特性验证了其作为替代性直接修复材料与粘接系统结合使用时的功效。
期刊介绍：
The Journal of Applied Oral Science is committed in publishing the scientific and technologic advances achieved by the dental community, according to the quality indicators and peer reviewed material, with the objective of assuring its acceptability at the local, regional, national and international levels. The primary goal of The Journal of Applied Oral Science is to publish the outcomes of original investigations as well as invited case reports and invited reviews in the field of Dentistry and related areas.
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