Sitaram Srinavasa Surya, Paulraj Jessy, Maiti Subhabrata, Shanmugam Rajeshkumar
Department of Pedodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India.
Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India.
Int J Clin Pediatr Dent. 2024 Nov;17(11):1229-1235. doi: 10.5005/jp-journals-10005-2984. Epub 2024 Dec 19.
Glass ionomer cement (GIC) serves as a widely used restorative dental material, known for its direct bonding to tooth structures and fluoride-releasing properties. This study aims to investigate the enhancement of GIC through the incorporation of a green-mediated nanocomposite comprising chitosan, titanium, zirconium, and hydroxyapatite, with a focus on evaluating the wear resistance of the modified GIC.
A one-pot synthesis technique was utilized to prepare a green-mediated nanocomposite incorporating chitosan, titanium, zirconium, and hydroxyapatite nanoparticles. Forty extracted teeth fulfilling the inclusion criteria were chosen for the study. Each tooth received a class I cavity preparation, and then they were divided into groups. Each group, comprising 10 teeth, received a restoration using green-mediated nanocomposite-modified GIC in varying concentrations: 3% for group I, 5% for group II, and 10% for group III. Additionally, there was a control group (group IV) consisting of conventional GIC without any modifications. To assess the wear resistance of the samples, they underwent a testing protocol, followed by placement in a chewing simulator for 30,000 cycles. Surface scans before and after chewing simulation were conducted, and deviations were superimposed using Geomagic software. The interim of root mean square (RMS), maximum deviation, and average deviation were analyzed to quantify the wear levels. Then the data obtained were subjected to statistical analysis, one-way analysis of variance (ANOVA), followed by Tukey's analysis to identify any significant differences among the groups.
The least deviation of RMS (0.292 ± 0.063), maximum deviation (0.664 ± 0.076), and average deviation (0.263 ± 0.049) were observed in the 5% nanocomposite-based GIC group, followed by the 10 and 3% groups. The nanocomposite-modified GIC groups exhibited superior wear resistance compared to the conventional group. This outcome addressed the limitations of traditional GIC, signifying a substantial advancement in dental restorative solutions.
The incorporation of green-mediated chitosan, titanium, zirconium, and hydroxyapatite nanocomposite into GIC demonstrated a remarkable improvement in wear resistance. This study paves the way for future advancements in dental materials, representing a significant stride toward the creation of environmentally conscious and efficacious dental restorations.
Sitaram SS, Paulraj J, Maiti S, Enhancing Wear Resistance in Glass Ionomer Cement through Green-mediated Chitosan-, Titanium-, Zirconium-, and Hydroxyapatite-based Nanocomposites: An Analysis before and after Chewing Simulator Endurance. Int J Clin Pediatr Dent 2024;17(11):1229-1235.
玻璃离子水门汀（GIC）是一种广泛应用的牙科修复材料，以其与牙齿结构的直接粘结性和释氟特性而闻名。本研究旨在通过掺入由壳聚糖、钛、锆和羟基磷灰石组成的绿色介导纳米复合材料来增强GIC，重点评估改性GIC的耐磨性。
采用一锅合成技术制备包含壳聚糖、钛、锆和羟基磷灰石纳米颗粒的绿色介导纳米复合材料。选择40颗符合纳入标准的拔除牙齿用于研究。每颗牙齿进行I类洞制备，然后分为几组。每组10颗牙齿，分别使用不同浓度的绿色介导纳米复合材料改性GIC进行修复：I组为3%，II组为5%，III组为10%。此外，有一个对照组（IV组），使用未作任何改性的传统GIC。为评估样品的耐磨性，它们经过测试方案，然后置于咀嚼模拟器中进行30000次循环。在咀嚼模拟前后进行表面扫描，并使用Geomagic软件叠加偏差。分析均方根（RMS）、最大偏差和平均偏差的差值以量化磨损程度。然后对获得的数据进行统计分析，即单因素方差分析（ANOVA），随后进行Tukey分析以确定各组之间的任何显著差异。
在基于5%纳米复合材料的GIC组中观察到RMS的最小偏差（0.292±0.063）、最大偏差（0.664±0.076）和平均偏差（0.263±0.049），其次是10%组和3%组。与传统组相比，纳米复合材料改性GIC组表现出更好的耐磨性。这一结果解决了传统GIC的局限性，标志着牙科修复解决方案的重大进步。
将绿色介导的壳聚糖、钛、锆和羟基磷灰石纳米复合材料掺入GIC中显示出耐磨性的显著改善。本研究为牙科材料的未来发展铺平了道路，朝着创造具有环保意识和高效的牙科修复体迈出了重要一步。
Sitaram SS, Paulraj J, Maiti S, 通过绿色介导的基于壳聚糖、钛、锆和羟基磷灰石的纳米复合材料增强玻璃离子水门汀的耐磨性：咀嚼模拟器耐久性前后分析。国际临床儿科牙科杂志2024；17(11):1229 - 1235。
