义齿聚合物加工技术的机械评估。

IF 5 3区 医学 Q1 ENGINEERING, BIOMEDICAL Journal of Functional Biomaterials Pub Date : 2024-08-21 DOI:10.3390/jfb15080234
Cristina Modiga, Andreea Stoia, Marius Traian Leretter, Ana Codruţa Chiş, Andreea-Violeta Ardelean, Edward-Ronald Azar, Gabriel Kapor, Daniela-Maria Pop, Mihai Romînu, Cosmin Sinescu, Meda-Lavinia Negruţiu, Emanuela-Lidia Petrescu
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引用次数: 0

摘要

背景:最近,由于聚合物材料的进步,可摘义肢发生了根本性的变化,耐用性和性能都得到了提高。尽管取得了这些进步,但各种聚合物材料和加工技术之间仍存在显著差异,因此需要全面掌握它们在机械、物理和治疗方面的影响。我们将对使用各种技术制造的假牙的抗压强度进行研究:方法:使用传统、注塑、加法和减法 CAD/CAM 加工技术制造全口义齿,所有技术均使用甲基丙烯酸甲酯(PMMA)作为主要材料。对试样进行了抗压机械测试,结果显示了抗压强度的差异:结果:所有试样都在一定力的作用下断裂,而不是像塑料材料那样因流动而屈服。每个试样都记录了最大力(牛顿)和断裂能。每种加工技术破碎假牙所需的平均力如下:传统填料压制技术为 4.54 千牛,注射成型技术为 17.92 千牛,加法 CAD/CAM 义齿为 1.51 千牛,减法 CAD/CAM 义齿为 5.9 千牛:热塑注射系统的结果最好,而三维打印样品的结果最差。另一个重要方面是各组的标准偏差,这表明热塑注射义齿的特性相对不稳定。CAD/CAM 铣削组在绝对特性和特性稳定性方面的结果较好。
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Mechanical Assessment of Denture Polymers Processing Technologies.

Background: Removable prostheses have seen a fundamental change recently because of advances in polymer materials, allowing improved durability and performance. Despite these advancements, notable differences still occur amongst various polymer materials and processing technologies, requiring a thorough grasp of their mechanical, physical, and therapeutic implications. The compressive strength of dentures manufactured using various technologies will be investigated.

Methods: Traditional, injection molding, and additive and subtractive CAD/CAM processing techniques, all utilizing Polymethyl methacrylate (PMMA) as the main material, were used to construct complete dentures. The specimens underwent a compressive mechanical test, which reveals the differences in compressive strength.

Results: All the specimens broke under the influence of a certain force, rather than yielding through flow, as is characteristic for plastic materials. For each specimen, the maximum force (N) was recorded, as well as the breaking energy. The mean force required to break the dentures for each processing technology is as follows: 4.54 kN for traditional packing-press technique, 17.92 kN for the injection molding technique, 1.51 kN for the additive CAD/CAM dentures, and 5.9 kN for the subtractive CAD/CAM dentures.

Conclusions: The best results were obtained in the case of the thermoplastic injection system and the worst results were recorded in the case of 3D printed samples. Another important aspect depicted is the standard deviation for each group, which reveal a relatively unstable property for the thermoplastic injected dentures. Good results here in terms of absolute property and stability of the property can be conferred to CAD/CAM milled group.

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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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