通过加法、减法和传统制造工艺生产的口腔矫治器夹板材料的机械和物理特性。

IF 4.6 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Dental Materials Pub Date : 2024-06-08 DOI:10.1016/j.dental.2024.05.030

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引用次数: 0

摘要

目的研究 3D 打印、铣削和注塑夹板材料的抗弯强度 (FS)、弹性模量 (E)、马顿斯硬度 (HM)、吸水性 (wsp)、水溶性 (wsl) 和转换度 (DC)：用五种三维打印材料（GR-22 flex、GR-10 guide、ProArt Print Splint clear、V-Print Splint、V-Print Splint comfort）、五种铣制材料（BioniCut、EldyPlus、ProArt CAD Splint clear、Temp Premium Flexible、Thermeo）和两种注塑材料（PalaXPress clear、Pro Base Cold）制作试样（N = 1140）。对 FS、E、HM、wsp、wsl 和 DC 进行了初始测试（24 h，37 °C，H2O）、储水后测试（90 d，37 °C，H2O）以及热循环后测试（5000 次热循环，5/55 °C）。数据分析采用了 Kolmogorov-Smirnov、Kruskal- Wallis、Mann-Whitney U 检验和 Spearman 相关性检验（P 结果）：最初，印刷材料的平均抗弯强度值为 1.9 至 90.7 兆帕，铣削材料的平均抗弯强度值为 3.8 至 107 兆帕，注塑材料的平均抗弯强度值为 99.7 至 102 兆帕。印刷材料的初始平均弹性模量值为 0.0 至 2.4 GPa，铣削材料为 0.1 至 2.7 GPa，注塑材料为 2.8 GPa。印刷材料的初始平均马顿硬度值为 14.5 至 126 N/mm2，铣削材料为 50.2 至 171 N/mm2，注塑材料为 143 至 151 N/mm2。最初，印刷材料的平均吸水值介于 23.1 至 41.2 μg/mm3 之间，研磨材料介于 4.5 至 23.5 μg/mm3 之间，注塑材料介于 22.5 至 23.3 μg/mm3 之间。印刷材料的初始平均水溶性值为 2.2 至 7.1 微克/立方毫米，研磨材料为 0.0 至 0.5 微克/立方毫米，注塑材料为 0.1 至 0.3 微克/立方毫米。经过水储存和热循环后，大多数数值都有所下降，有些则有所上升。印刷材料的平均直流电值从最初的 72.3% 到 94.5%，贮水后从 74.2% 到 96.8%，热循环后从 75.6% 到 95.4%：用于咬合装置的印刷、铣削和注塑材料的机械和物理特性各不相同，并受老化过程的影响。在临床应用中，需要根据具体的适应症来选择材料。

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Mechanical and physical properties of splint materials for oral appliances produced by additive, subtractive and conventional manufacturing

Objectives

To investigate the flexural strength (FS), elastic modulus (E), Martens hardness (HM), water sorption (w_sp), water solubility (w_sl) and degree of conversion (DC) of 3D-printed, milled and injection molded splint materials.

Methods

Specimens (N = 1140) were fabricated from five 3D-printed (GR-22 flex, GR-10 guide, ProArt Print Splint clear, V-Print Splint, V-Print Splint comfort), five milled (BioniCut, EldyPlus, ProArt CAD Splint clear, Temp Premium Flexible, Thermeo) and two injection molded (PalaXPress clear, Pro Base Cold) materials. FS, E, HM, w_sp, w_sl and DC were tested initially (24 h, 37 °C, H₂O), after water storage (90 d, 37 °C, H₂O) as well as after thermal cycling (5000 thermal cycles, 5/55 °C). Data were analyzed with Kolmogorov-Smirnov, Kruskal- Wallis, Mann-Whitney U test and Spearman’s correlation (p < 0.05).

Results

Initially, the mean flexural strength values ranged from 1.9 to 90.7 MPa for printed, 3.8 to 107 MPa for milled and 99.7 to 102 MPa for injection molded materials. The initial mean elastic modulus values were 0.0 to 2.4 GPa for printed, 0.1 to 2.7 GPa for milled and 2.8 GPa for injection molded materials. The initial mean Martens hardness values were 14.5 to 126 N/mm² for printed, 50.2 to 171 N/mm² for milled and 143 to 151 N/mm² for injection molded materials. Initially, the mean water sorption values ranged from 23.1 to 41.2 μg/mm³ for printed, 4.5 to 23.5 μg/mm³ for milled and from 22.5 to 23.3 μg/ mm³ for injection molded materials. The initial mean water solubility values ranged from 2.2 to 7.1 μg/mm³ for printed, 0.0 to 0.5 μg/mm³ for milled and 0.1 to 0.3 μg/mm³ for injection molded materials. After water storage and thermal cycling most of the values decreased and some increased. The mean DC values ranged initially from 72.3 to 94.5 %, after water storage from 74.2 to 96.8 % and after thermal cycling from 75.6 to 95.4 % for the printed materials.

Significance

The mechanical and physical properties of printed, milled and injection molded materials for occlusal devices vary and are influenced by aging processes. For clinical applications, materials need to be chosen according to the specific indications.

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来源期刊

Dental Materials 工程技术-材料科学：生物材料

CiteScore

9.80

自引率

10.00%

发文量

290

审稿时长

67 days

期刊介绍： Dental Materials publishes original research, review articles, and short communications. Academy of Dental Materials members click here to register for free access to Dental Materials online. The principal aim of Dental Materials is to promote rapid communication of scientific information between academia, industry, and the dental practitioner. Original Manuscripts on clinical and laboratory research of basic and applied character which focus on the properties or performance of dental materials or the reaction of host tissues to materials are given priority publication. Other acceptable topics include application technology in clinical dentistry and dental laboratory technology. Comprehensive reviews and editorial commentaries on pertinent subjects will be considered.