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章家铭,叶盛佳,杨晓燕,忻贤贞,曾丽,魏斌.数字光处理型3D打印参数对导板树脂机械性能的影响[J].口腔材料器械杂志,2023,32(4):240-247.

数字光处理型3D打印参数对导板树脂机械性能的影响

Effect of digital light processing 3D printing parameters on mechanical properties of guide resin

投稿时间：2023-02-15 修订日期：2023-04-14

DOI：10.11752/j.kqcl.2023.04.03

英文关键词:Digital optical processing Guide resin Surface forming Parameters Properties testing

基金项目:

作者	单位	E-mail
章家铭	上海交通大学医学院附属第九人民医院口腔修复科·口腔综合科·口腔第一门诊, 上海交通大学口腔医学院, 国家口腔医学中心, 国家口腔疾病临床医学研究中心, 上海市口腔医学重点实验室, 上海市口腔医学研究所, 上海 200011
叶盛佳	上海交通大学医学院附属第九人民医院口腔修复科·口腔综合科·口腔第一门诊, 上海交通大学口腔医学院, 国家口腔医学中心, 国家口腔疾病临床医学研究中心, 上海市口腔医学重点实验室, 上海市口腔医学研究所, 上海 200011
杨晓燕	上海交通大学医学院附属第九人民医院口腔修复科·口腔综合科·口腔第一门诊, 上海交通大学口腔医学院, 国家口腔医学中心, 国家口腔疾病临床医学研究中心, 上海市口腔医学重点实验室, 上海市口腔医学研究所, 上海 200011
忻贤贞	上海交通大学医学院附属第九人民医院口腔修复科·口腔综合科·口腔第一门诊, 上海交通大学口腔医学院, 国家口腔医学中心, 国家口腔疾病临床医学研究中心, 上海市口腔医学重点实验室, 上海市口腔医学研究所, 上海 200011
曾丽	上海交通大学医学院附属第九人民医院口腔修复科·口腔综合科·口腔第一门诊, 上海交通大学口腔医学院, 国家口腔医学中心, 国家口腔疾病临床医学研究中心, 上海市口腔医学重点实验室, 上海市口腔医学研究所, 上海 200011	252216867@qq.com
魏斌	上海交通大学医学院附属第九人民医院口腔修复科·口腔综合科·口腔第一门诊, 上海交通大学口腔医学院, 国家口腔医学中心, 国家口腔疾病临床医学研究中心, 上海市口腔医学重点实验室, 上海市口腔医学研究所, 上海 200011	weibin0328@hotmail.com

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中文摘要:

目的探寻多种数字光处理（DLP）型3D打印工艺参数对导板树脂成型件尺寸精度与性能的影响及规律。方法分别以不同的单层固化时间、层厚、后固化处理时间及模型设置方向为因变量分组，每组使用Sisma everes uno DLP型3D打印机遵循标准分别制备精度、硬度、弯曲强度、拉伸强度的测试试样各15个，测试试样的长（X）、宽（Y）、高（Z），使用邵氏硬度计测试硬度，万能力学试验机测试弯曲强度与拉伸强度，并进行统计学分析。结果打印件的尺寸精度随着单层固化时间的增加而先升高再降低，1.3 s时精度最高，随着层厚增加而先升高再降低，0.05 mm时精度最高，随着后固化时间的增加而降低，与模型设置方向无显著关系；打印件的硬度受到单层固化时间、层厚及后固化时间影响，与模型设置方向无显著关系；打印件拉伸强度及弯曲强度受到单层固化时间、层厚、模型设置方向及后固化时间的多因素共同影响。单层固化时间在1.3~1.4 s，层厚0.025 mm，模型根据实际形状向Y方向设置，后固化时间10~15 min时，DLP成型件在尺寸精度、硬度、拉伸强度、弯曲强度等综合方面表现相对较优。结论 DLP3D打印的参数与打印件的精度、物理性能之间存在一定的规律，并且不同因素间的影响强弱不同。通过对参数的筛选，可以实现对单层固化时间、层厚、模型设置方向、后固化处理时间的优化，从而提高打印件的精度和物理性能。

英文摘要:

Objective To explore the influence and rule of various Digital Light Processing(DLP) surface forming 3D printing technology parameters on the dimensional accuracy and performance of guide plate resin forming parts, and to provide practical basis for clinical application and production.Methods According to the control variable method, different single-layer curing time, layer thickness, post-curing treatment time and model setting direction were grouped as dependent variables, and each group was prepared with 15 precision test samples,hardness test samples, bending strength test samples and tensile strength test samples by Sisma everes uno DLP 3D printer in accordance with the standards. The length(X), width(Y) and height(Z) of the sample were measured by electronic caliper, the hardness of the sample was measured by shore hardness tester, and the bending strength and tensile strength of the corresponding sample were tested by the universal mechanical testing machine. After excluding abnormal data, all the data were statistically analyzed using SPSS 26 software.Results The dimensional accuracy of the printed parts increased at the initials stage and then decreased with the increase of single-layer curing time.The accuracy was the highest at 1.3 s, and increased at the initial stage and then decreased with the increase of layer thickness. The accuracy was the highest at 0.05 mm, and decreased with the increase of post-curing time, which had no significant relationship with the setting direction of the model. The hardness of the printed parts increased with the increase of the single-layer curing time, decreased with the increase of the layer thickness, and increased with the increase of the post-curing time, but had no significant relationship with the setting direction of the model. The tensile strength increased with the increase of single curing time, decreased with the increase of layer thickness, increased with the increase of post-curing time, and changed with the change of model setting direction. The bending strength of printed parts increased with the increase of single curing time, decreased with the increase of layer thickness,increased with the increase of post-curing time, and changes with the change of model setting direction. When the curing time of single layer was 1.3 s~1.4 s, the thickness of layer was 0.025 mm, the model was set in the Y direction according to the actual shape, and the post-curing time was 10 min~15 min, the forming parts had the relatively better performance in dimensional accuracy, hardness, tensile strength, bending strength and other comprehensive aspects.Conclusion DLP 3D printer was used to study the relationship between the related parameters of photosensitive resin molding and the accuracy, hardness, bending strength and tensile strength of the molding parts, and the rule under the influence of single factor was summarized, which played a certain guiding role in the practical production and application, and also provided a theoretical basis for the factor screening and optimization of multi-factor experiments in the future. It also provides design ideas for the same type research of different kinds of resin materials.

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