不同聚合后工艺对三种牙科打印树脂材料性能的影响

IF 3.5 2区医学 Q2 ENGINEERING, BIOMEDICAL

Journal of the Mechanical Behavior of Biomedical Materials Pub Date : 2025-08-13 DOI:10.1016/j.jmbbm.2025.107164

Sophie Gekle , Felicitas Mayinger , Ursula Kreitmair , Marcel Reymus , Moritz Hoffmann , Bogna Stawarczyk

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引用次数: 0

摘要

目的研究不同的聚合后处理（PP）对有和无时效处理的3d打印样品的聚合深度、聚合转化度（DC）、马氏硬度（HM）、抗弯强度（FS）和弹性模量（EM）的影响。方法用两种树脂3D打印特定几何形状的标本（N = 720），用于永久应用(VAR=Varseo Smile Crownplus, BEGO Medical；CRO= Crowntec, Saremco Dental)和一种用于临时应用的树脂（FRE=Freeprint temp, Detax）。他们经历了5次PP，分为3组(PP 1: 385 nm, 76 mW/cm2, 180 s；PP 2: 400 nm, 77 mW/cm2, 180 s；PP 3: 460 nm, 49 mW/cm2, 180 s)和两个闪蒸组(PP 4: 37 mW/cm2, 10闪/秒，脉冲持续时间100 μs，固化时间2000闪/200 ms；PP 5: 90 mW/cm2，每秒闪烁10次，脉冲持续时间100 μs，固化时间2000次/200 ms)。在三个不同的深度（0 mm, 2 mm, 4 mm）中，在初始和热循环（10 000x, 5/55°C）后测试了DC， HM， FS和EM。采用Kolmogorov-Smirnov、Kruskal-Wallis、Mann-Whitney-U检验、Wilcoxon sign -rank检验和Spearman相关(p <；0.05)。结果spp5在两种老化状态下均表现出较高的值，而pp3表现出最低的值。人工老化使大多数组的性能有所提高，有些组的性能有所下降。DC 25/30 pp组和HM 27/30 pp组在0 mm深度的值高于2 mm和4 mm深度。后聚合增强了用于固定牙修复体（fdp）的测试样品的性能。推荐使用PP 5，因为它在大多数组中始终导致最高的DC， HM， FS和EM，特别是当DC和HM的深度为0 mm时。深度为2mm和4mm时，数值较低。在LED组中，所有材料的波长建议为385nm和400nm，而460 nm的波长似乎是不可取的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Impact of different post-polymerization protocols on the material properties of three printed dental resins

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Impact of different post-polymerization protocols on the material properties of three printed dental resins

Objectives

To investigate the influence of different post-polymerization protocols (PP) on polymerization depth and resultant degree of conversion (DC), Martens hardness (HM), flexural strength (FS) and elastic modulus (EM) of 3D-printed specimens with and without aging regimes.

Methods

Specimens of a specific geometry (N = 720) were 3D printed from two resins for permanent applications (VAR=Varseo Smile Crown^plus, BEGO Medical; CRO= Crowntec, Saremco Dental), and one resin for temporary applications (FRE=Freeprint temp, Detax). They underwent five PP's, divided into three LED-groups (PP 1: 385 nm, 76 mW/cm², 180 s; PP 2: 400 nm, 77 mW/cm², 180 s; PP 3: 460 nm, 49 mW/cm², 180 s) and two flash curing groups (PP 4: 37 mW/cm², ten flashes per second, pulse duration 100 μs, curing period 2000 flashes/200 ms; PP 5: 90 mW/cm², ten flashes per second, pulse duration 100 μs, curing period 2000 flashes/200 ms). DC, HM, FS and EM were tested initially and after thermal cycling (10.000x, 5/55 °C) and within three different depths (0 mm, 2 mm, 4 mm). Data were analyzed with Kolmogorov-Smirnov, Kruskal-Wallis, Mann-Whitney-U test, Wilcoxon signed-rank test and Spearman's correlation (p < 0.05).

Results

PP 5 consistently showed high values for both aging regimes, while PP 3 presented the lowest results. Artificial aging increased the properties for most groups, some decreased. For DC 25/30 PP-groups and HM 27/30 PP-groups showed higher values for 0 mm depths in comparison with 2 mm and 4 mm depths.

Significance

Post-polymerization enhances the properties of the tested specimens intended for fixed dental prostheses (FDPs). PP 5 is recommended because it consistently resulted in highest DC, HM, FS, and EM across most groups, especially when combined with depths of 0 mm for DC and HM. Depths of 2 mm and 4 mm mostly resulted in lower values. Among LED groups, wavelengths of 385 nm and 400 nm are recommended for all materials, while wavelength of 460 nm seems not advisable.

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来源期刊

Journal of the Mechanical Behavior of Biomedical Materials 工程技术-材料科学：生物材料

CiteScore

7.20

自引率

7.70%

发文量

505

审稿时长

46 days

期刊介绍： The Journal of the Mechanical Behavior of Biomedical Materials is concerned with the mechanical deformation, damage and failure under applied forces, of biological material (at the tissue, cellular and molecular levels) and of biomaterials, i.e. those materials which are designed to mimic or replace biological materials. The primary focus of the journal is the synthesis of materials science, biology, and medical and dental science. Reports of fundamental scientific investigations are welcome, as are articles concerned with the practical application of materials in medical devices. Both experimental and theoretical work is of interest; theoretical papers will normally include comparison of predictions with experimental data, though we recognize that this may not always be appropriate. The journal also publishes technical notes concerned with emerging experimental or theoretical techniques, letters to the editor and, by invitation, review articles and papers describing existing techniques for the benefit of an interdisciplinary readership.