Radioprotection Performance Evaluation of 3D-Printed and Conventional Heat-Cured Dental Resins for Radiotherapy Prostheses.

IF 5 3区 医学 Q1 ENGINEERING, BIOMEDICAL Journal of Functional Biomaterials Pub Date : 2024-09-25 DOI:10.3390/jfb15100282
Jiangyu Wang, Mai Murase, Yuka I Sumita, Ryoichi Notake, Masako Akiyama, Ryoichi Yoshimura, Noriyuki Wakabayashi
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Abstract

3D printing is increasingly used in dentistry, with biocompatible resins playing a key role. This study compared the radioprotective properties of a commonly used 3D-printed resin (Formlabs surgical guide resin) with traditional heat-cured resin and examined the relationship between material thickness and radiation attenuation. The specimens consisted of 3D-printed and heat-cured resin specimens, each measuring 45 × 45 mm2, with five different thicknesses (6, 8, 10, 12, and 14 mm), totaling 100 samples. Both types of resin specimens underwent testing with 150 MU external beam radiation therapy (EBRT) and 400 cGy brachytherapy. Radiation experiments indicated that under EBRT conditions, there were no significant differences in radiation attenuation between the 3D-printed and heat-cured resins across all thickness groups. In brachytherapy, the attenuation of the 3D-printed resin was significantly lower than the heat-cured resin in the 6 mm and 8 mm groups. Specifically, attenuation rates were 48.0 ± 0.7 (3D-printed) vs. 45.2 ± 1.9 (heat-cured) in the 6 mm group, and 39.6 ± 1.3 vs. 37.5 ± 1.1 in the 8 mm group. Both resins showed significant positive linear correlations between thickness and attenuation (p < 0.001) within 6-14 mm. Thus, 3D-printed resin shows promising radioprotective properties and is a viable alternative to traditional heat-cured resin.

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用于放射治疗假体的三维打印和传统热固化牙科树脂的放射防护性能评估
三维打印技术在牙科领域的应用越来越广泛,其中生物相容性树脂发挥着关键作用。本研究比较了一种常用 3D 打印树脂(Formlabs 手术导板树脂)与传统热固化树脂的辐射防护特性,并研究了材料厚度与辐射衰减之间的关系。试样由三维打印和热固化树脂试样组成,每个试样的尺寸为 45 × 45 平方毫米,有五种不同的厚度(6、8、10、12 和 14 毫米),共计 100 个试样。两种类型的树脂试样都接受了 150 MU 外照射疗法(EBRT)和 400 cGy 近距离放射治疗的测试。辐射实验表明,在 EBRT 条件下,3D 打印树脂和热固化树脂在所有厚度组的辐射衰减方面均无明显差异。在近距离放射治疗中,在 6 毫米和 8 毫米组中,三维打印树脂的衰减率明显低于热固化树脂。具体来说,6 毫米组的衰减率为 48.0 ± 0.7(三维打印)对 45.2 ± 1.9(热固化),8 毫米组的衰减率为 39.6 ± 1.3 对 37.5 ± 1.1。在 6-14 毫米范围内,两种树脂的厚度与衰减之间均呈明显的正线性相关(p < 0.001)。因此,三维打印树脂显示出良好的辐射防护特性,是传统热固化树脂的可行替代品。
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来源期刊
Journal of Functional Biomaterials
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.
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