Thermal Dynamics of Laser-Irradiated Trilayer Bonded-Zirconia Structures.

IF 5 3区医学 Q1 ENGINEERING, BIOMEDICAL

Journal of Functional Biomaterials Pub Date : 2025-04-11 DOI:10.3390/jfb16040137

Mitchell Tharp, Jaccare Jauregui-Ulloa, Grace Mendonça De Souza, Susana Salazar Marocho

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Abstract

This study aims to assess the thermal dynamics of supporting structures during laser-assisted debonding of bonded yttrium-stabilized zirconia (YSZ) ceramic. We tested the hypothesis that the heat transfer to dentin analog material and composite resin resembles that of dentin. Thirty sintered YSZ (ZirCAD, Ivoclar, Schann, Liechtenstein) slabs (4 mm diameter, 1 mm thickness) were air particle abraded, followed by two coats of Monobond Plus (Ivoclar). The slabs were bonded to exposed occlusal dentin, NEMA G10 dentin analog, or composite resin cylinders using Multilink Automix (Ivoclar) dual-cured cement. The bonded YSZ specimens (n = 10/group) subjected to irradiation with an Er,Cr:YSGG laser (Waterlase MD, Biolase, Foothill Ranch, CA, USA) at 7.5 W, 25 Hz, with 50% water and air for 15 s. Heat transfer during laser irradiation was monitored with an infrared camera (Optris PI 640, Optris GmbH, Berlin, Germany) at 0.1-s intervals. Data were analyzed using one-way ANOVA, which showed no significant differences in mean temperature between zirconia and cement layers across the substrates (composite resin, G10, dentin) (p = 0.0794). These results suggest flexibility in substrate choice for future thermal dynamics studies under laser irradiation.

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激光辐照三层键合氧化锆结构的热动力学。

本研究旨在评估激光辅助键合钇稳定氧化锆（YSZ）陶瓷脱键过程中支撑结构的热动力学。我们测试了牙本质模拟材料和复合树脂的传热与牙本质相似的假设。30块烧结的YSZ （ZirCAD, Ivoclar, Schann，列支敦士登）板（直径4毫米，厚度1毫米）被空气颗粒磨损，然后涂上两层Monobond Plus （Ivoclar）。使用Multilink Automix （Ivoclar）双固化水泥，将钢板粘合到暴露的牙本质、NEMA G10牙本质模拟物或复合树脂圆柱体上。用Er，Cr:YSGG激光（Waterlase MD, Biolase, Foothill Ranch， CA， USA）以7.5 W, 25 Hz， 50%水和空气照射15 s，结合YSZ样品（n = 10/组）。红外摄像机（Optris PI 640, Optris GmbH, Berlin, Germany）以0.1 s的间隔监测激光照射过程中的传热。数据分析采用单因素方差分析，结果显示氧化锆层和水泥层在基材（复合树脂、G10、牙本质）上的平均温度没有显著差异（p = 0.0794）。这些结果为未来激光照射下的热动力学研究提供了衬底选择的灵活性。

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

Journal of Functional Biomaterials Engineering-Biomedical Engineering

CiteScore

4.60

自引率

4.20%

发文量

226

审稿时长

11 weeks

期刊介绍： Journal of Functional Biomaterials (JFB, ISSN 2079-4983) is an international and interdisciplinary scientific journal that publishes regular research papers (articles), reviews and short communications about applications of materials for biomedical use. JFB covers subjects from chemistry, pharmacy, biology, physics over to engineering. The journal focuses on the preparation, performance and use of functional biomaterials in biomedical devices and their behaviour in physiological environments. Our aim is to encourage scientists to publish their results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Several topical special issues will be published. Scope: adhesion, adsorption, biocompatibility, biohybrid materials, bio-inert materials, biomaterials, biomedical devices, biomimetic materials, bone repair, cardiovascular devices, ceramics, composite materials, dental implants, dental materials, drug delivery systems, functional biopolymers, glasses, hyper branched polymers, molecularly imprinted polymers (MIPs), nanomedicine, nanoparticles, nanotechnology, natural materials, self-assembly smart materials, stimuli responsive materials, surface modification, tissue devices, tissue engineering, tissue-derived materials, urological devices.