Hardness, roughness, and compressive strength of different filled resin composites after thermal aging and bleaching procedures.

IF 0.9 4区医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

American journal of dentistry Pub Date : 2024-12-01

Seda Ü Aladağ

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引用次数: 0

Abstract

Purpose: To evaluate the effect of aging and bleaching on the physico-mechanical properties of the different filled resin composites.

Methods: Samples of resin composites [Arabesk (A), G-aenial Anterior (G), i-LIGHT N (I) and Palfique Estelite Paste (P) \ were first divided into two subgroups. Thermal aging was applied to half of the samples. Then, fresh and aged samples were divided into three subgroups (n= 8): control (C) (no treatment), office bleaching (O), home bleaching (H), thermal aging (T), thermal aging +office bleaching (TO) and thermal aging +home bleaching (TH). The microhardness (kg/mm²), surface roughness (µm), and compressive strength (MPa) values were measured. The data were analyzed with 3‑way ANOVA and Bonferroni post hoc pairwise comparison tests (P< 0.05).

Results: T significantly decreased the hardness and increased the roughness of all the resin composites (P< 0.05). The compressive strength of all resin composites decreased after aging. O and H increased the roughness of the A, I and P (P< 0.001). H increased the microhardness of the G (P< 0.05).

Clinical significance: Thermal aging and bleaching agents adversely affected the hardness, roughness, and compressive strength of the nonaged composites tested. Bleaching agents have less effect on the physico-mechanical properties of aged composites. Therefore, bleaching can be a safe and conservative esthetic treatment plan for patients who have long-standing composite restorations.

本刊更多论文

不同填充树脂复合材料在热老化和漂白后的硬度、粗糙度和抗压强度。

目的：研究老化和漂白对不同填充树脂复合材料物理力学性能的影响。方法：将树脂复合材料[Arabesk (A), G-aenial Anterior (G), I - light N (I)和Palfique Estelite Paste (P) \]样品首先分为两个亚组。对一半样品进行热时效处理。然后，将新鲜和老化的样品分为3个亚组（n= 8）：对照组(C)（未处理）、办公室漂白(O)、家庭漂白(H)、热老化(T)、热老化+办公室漂白（TO）和热老化+家庭漂白（TH）。测量了显微硬度（kg/mm²）、表面粗糙度（µm）和抗压强度（MPa）值。数据分析采用3 - way方差分析和Bonferroni事后两两比较检验（P< 0.05）。结果：T能显著降低树脂复合材料的硬度，提高其粗糙度（P< 0.05）。所有树脂复合材料的抗压强度在老化后都有所下降。O和H增加了A、I和P的粗糙度（P< 0.001）。H使G的显微硬度升高（P< 0.05）。临床意义：热老化和漂白剂对未老化复合材料的硬度、粗糙度和抗压强度有不利影响。漂白剂对老化复合材料的物理力学性能影响较小。因此，对于长期使用复合修复体的患者，漂白是一种安全、保守的美容治疗方案。

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

American journal of dentistry 医学-牙科与口腔外科

CiteScore

2.40

自引率

7.10%

发文量

审稿时长

1 months

期刊介绍： The American Journal of Dentistry, published by Mosher & Linder, Inc., provides peer-reviewed scientific articles with clinical significance for the general dental practitioner.