Trzaskowski Maciej, Mańka-Malara Katarzyna, Szczesio-Włodarczyk Agata, Sokołowski Jerzy, Kostrzewa-Janicka Jolanta, Mierzwińska-Nastalska Elżbieta
Department of Prosthodontics, Medical University of Warsaw, ul. Binieckiego 6, 02-097 Warsaw, Poland.
University Laboratory of Materials Research, Medical University of Lodz, Pomorska 251, 92-216 Łódź, Poland.
Polymers (Basel). 2023 Feb 11;15(4):898. doi: 10.3390/polym15040898.
Custom mouthguards are used in various sports disciplines as a protection for teeth, temporomandibular joints, and soft tissues of the oral cavity from impact forces. The purpose of this research was to evaluate the mechanical properties of flexible polymeric 3D-printable materials and to select a material with the most favourable physical properties for making intraoral protectors. Four 3D-printable polymeric materials were selected for the evaluation: IMPRIMO LC IBT (Scheu-Dental, Iserlohn, Germany), Keyortho IBT (EnvisionTEC, Gladbeck, Germany), IBT (Formlabs, Somerville, MA, USA), and Ortho IBT (NextDent, Utrecht, Netherlands). A total of 176 samples (44 from each material) was 3D-printed using the stereolitography (SLA) technique. Tensile strength, flexural strength, notch-toughness, Shore hardness, sorption, and solubility tests were conducted. The materials were compared using a series of analyses of variance (one-way ANOVA) with Bonferroni post hoc tests. Statistical analyses were performed with the use of IBM SPSS Statistics 28.0.0 software (IBM, New York, NY, USA). Each material was assigned a score from 1 to 4 depending on the individual test results, and tests were given indexes according to the significance of the parameter in the mouthguard protective function. The number of points obtained by each material in each test was then multiplied by the test index, and the results were tabulated. The material with the highest result among the ones studied-most suitable for the application in mouthguard fabrication-was Keyortho IBT from EnvisionTEC.
定制口腔护具在各种体育项目中被用作保护牙齿、颞下颌关节和口腔软组织免受冲击力的伤害。本研究的目的是评估柔性聚合物3D可打印材料的力学性能，并选择一种具有最有利物理性能的材料来制作口腔内保护器。选择了四种3D可打印聚合物材料进行评估：IMPRIMO LC IBT（德国伊瑟隆的Scheu-Dental公司）、Keyortho IBT（德国格拉德贝克的EnvisionTEC公司）、IBT（美国马萨诸塞州萨默维尔的Formlabs公司）和Ortho IBT（荷兰乌得勒支的NextDent公司）。使用立体光刻（SLA）技术3D打印了总共176个样品（每种材料44个）。进行了拉伸强度、弯曲强度、缺口韧性、肖氏硬度、吸附和溶解度测试。使用一系列方差分析（单因素方差分析）和Bonferroni事后检验对材料进行比较。使用IBM SPSS Statistics 28.0.0软件（美国纽约的IBM公司）进行统计分析。根据各个测试结果，每种材料被赋予1到4的分数，并根据该参数在口腔护具保护功能中的重要性为测试给出指数。然后将每种材料在每个测试中获得的分数乘以测试指数，并将结果制成表格。在所研究的材料中结果最高的材料——最适合用于制作口腔护具的材料——是来自EnvisionTEC的Keyortho IBT。
