Effect of Dietary Simulating Solvents on the CAD-CAM Provisional Restorative Materials' Microhardness and Color Stability Properties: An in vitro Study.

IF 1.5 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical, Cosmetic and Investigational Dentistry Pub Date : 2024-06-19 eCollection Date: 2024-01-01 DOI:10.2147/CCIDE.S462107

Haidar Alalawi, Sarah Al-Qanas, Sarah Al-Ghamdi, Raghad Al-Fuhaid, Soban Khan, Maram A AlGhamdi, Khalid S Almulhim, Faisal E Aljofi, Zahid A Khan, Yousif A Al-Dulaijan

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Abstract

Purpose: This in vitro study investigated the effects of dietary solvents on the microhardness and color stability of CAD/CAM provisional restorations compared to conventional materials.

Methods: Disc-shaped specimens (n=200) were fabricated from self-cured acrylic resin, two 3D-printing resins (FormLabs, NextDent), and a milled material (TelioCAD). Randomization assigned specimens (n=10/group) to immersion solutions: artificial saliva, citric acid, heptane, coffee, and tea. Microhardness and color stability were evaluated. One-way and three-way ANOVA with Tukey's post hoc test analyzed the data.

Results: Dietary solvents significantly reduced the surface microhardness of all tested materials (p<0.05). Unpolished surfaces exhibited greater color changes compared to polished ones (p<0.05) across all materials. Coffee and tea induced the most substantial reductions in hardness and the most significant color alterations (p<0.05), whereas saliva and citric acid had minimal effects.

Conclusion: Milled provisional restorations exhibited superior hardness and color stability. Dietary solvents significantly affected material properties over time, highlighting the importance of material selection for clinical applications.

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饮食模拟溶剂对 CAD-CAM 临时修复材料微硬度和颜色稳定性能的影响：体外研究。

目的：与传统材料相比，本体外研究调查了饮食溶剂对 CAD/CAM 临时修复体的微硬度和颜色稳定性的影响：用自固化丙烯酸树脂、两种三维打印树脂（FormLabs、NextDent）和一种研磨材料（TelioCAD）制作圆盘状试样（n=200）。随机将试样（10 个/组）分配到浸泡液中：人工唾液、柠檬酸、庚烷、咖啡和茶。对显微硬度和颜色稳定性进行评估。对数据进行了单因素和三因素方差分析，并进行了Tukey事后检验：结果：饮食溶剂明显降低了所有测试材料的表面显微硬度（p）：磨制临时修复体表现出卓越的硬度和颜色稳定性。饮食溶剂会随着时间的推移明显影响材料的特性，这突出了临床应用中材料选择的重要性。

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