Micro-Hardness and Surface Roughness of Bulk-Fill Composite Resin: Effect of Surface Sealant Application and Two Bleaching Regimens

Q4 Dentistry

European Journal of General Dentistry Pub Date : 2023-10-16 DOI:10.1055/s-0043-1773803

Reham Mohamad Attia, Eman Mohamed Sobhai, Mona El Said Abd El Hameed Essa

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引用次数: 0

Abstract

Abstract Objectives The aim of this study was to assess the impact of applying a surface sealant and two bleaching regimens, on the micro-hardness, and surface roughness of bulk-fill composite resin Materials and Methods One-hundred twenty specimens were prepared with a diameter of 5 mm and thickness of 4 mm using bulk-fill composite. Specimens were subdivided into group 1: (n= 60), in which Fortify surface sealant was used, and group 2 (control): (n= 60), in which specimens were only finished and polished. After applying in-office and at-home bleaching, micro-hardness and surface roughness were measured before and after bleaching. Statistical analysis was performed using Student's t-test and paired test. Results Hardness values of group 1 were lower than values of group 2 before and after bleaching, with different bleaching procedures. Applying surface sealant and different bleaching regimens led to a significant difference of surface roughness (p < 0.001). Conclusion Applying surface sealant decreases both micro-hardness and surface roughness. The bleaching procedures significantly affect the surface roughness, but not the micro-hardness. Clinical Significance Surface sealant can enhance the surface roughness of bulk-fill composite in nonstress bearing area as it reduces the surface micro-hardness.

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体积填充复合树脂的显微硬度和表面粗糙度:表面密封剂和两种漂白方案的影响

摘要目的研究不同表面密封剂和两种漂白方案对体积填充复合树脂显微硬度和表面粗糙度的影响。材料与方法采用体积填充复合树脂制备120个直径为5 mm、厚度为4 mm的试样。将标本再分为1组(n= 60)和2组(n= 60)， 1组使用Fortify表面密封胶，2组(n= 60)只进行表面处理和抛光。分别在办公室和家中进行漂白，测定漂白前后的显微硬度和表面粗糙度。统计学分析采用学生t检验和配对检验。结果1组在漂白前后硬度值均低于2组，漂白方法不同。应用表面密封剂和不同的漂白方案导致表面粗糙度的显著差异(p <0.001)。结论应用表面密封胶可降低表面显微硬度和粗糙度。漂白过程对表面粗糙度有显著影响，但对显微硬度没有影响。临床意义表面密封胶通过降低表面显微硬度，可以提高非受力区块体填充复合材料的表面粗糙度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

European Journal of General Dentistry Dentistry-Dentistry (all)

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： European Journal of General Dentistry (EJGD) is one of the leading open-access international dental journal within the field of Dentistry. The aim of EJGD is publishing novel and high-quality research papers, as well as to influence the practice of dentistry at clinician, research, industry and policy-maker level on an international basis. EJGD publishes articles on all disciplines of dentistry including the cariology, orthodontics, oral surgery, preventive dentistry, periodontology, endodontology, operative dentistry, fixed and removable prosthodontics, dental biomaterials science, long-term clinical trials including epidemiology and oral health, technology transfer of new scientific instrumentation or procedures, as well as clinically relevant oral biology and translational research.Moreover, EJGD also publish the scientific researches evaluating the use of new biomaterials, new drugs and new methods for treatment of patients with different kinds of oral and maxillofacial diseases or defects, the diagnosis of oral and maxillofacial diseases with new methods, etc. Moreover, researches on the quality of life, psychological interventions, improving disease treatment outcomes, the prevention, diagnosis and management of cancer therapeutic complications, rehabilitation, palliative and end of life care, and support teamwork for cancer care and oral health care for old patients are also welcome. EJGD publishes research articles, case reports, reviews and comparison studies evaluating materials and methods in the all fields of related to dentistry.