Department of Prosthodontics, SRM Dental College, Chennai, Tamil Nadu, India.
J Indian Prosthodont Soc. 2024 Apr 1;24(2):196-200. doi: 10.4103/jips.jips_535_23. Epub 2024 Apr 23.
In-office three-dimensional (3D) printers and metal sleeveless surgical guides are becoming a major trend recently. However, metal sleeve-free designs are reported to be more prone to distortion which might lead to variation in the inner diameter of the drill hole and cause deviation and inaccuracy in the placement of the implant. Carbon fiber nanoparticles are reported to improve the properties of 3D printing resin material in industrial application.
The purpose of the study is to evaluate and compare the wear resistance of 3D-printed implant guides with metal sleeve, sleeve-free, and reinforced sleeve-free resin to the guide drill.
A total of 66 samples with 22 samples in each group. Three groups including 3D-printed surgical guide with metal sleeve (Group A), without metal sleeve (Group B), an carbon fiber reinforced without metal sleeve (Group C) were included in the study. All samples were evaluated before sequential drilling and after sequential drilling using Vision Measuring Machine. The data were tabulated and statistically evaluated.
The data obtained were statistically analyzed with one-way analysis of variance and posthoc test. The data obtained for wear observed in the samples showed that the wear was highest in Group B with a mean of 0.5036 ± 0.1118 and the least was observed in Group A with a mean of 0.0228 ± 0.0154 and Group C was almost similar to Group A with mean of 0.0710 ± 0.0381. The results showed there was a significant difference between Group B with Group A and C, respectively (P < 0.05). The results showed that there was no significant difference regarding the wear observed between Groups A and C (P > 0.05).
The wear observed in the guide with a metal sleeve and carbon fiber reinforced without a metal sleeve was almost similar. The carbon fiber-reinforced guide showed better tolerance to guide drill equivalent to metal sleeve. Thus, carbon fiber nanoparticles reinforced in 3D printing resin have shown improved strength and can be used as a good replacement for a metal sleeve for an accurate placement of the implant.
在诊室内使用三维（3D）打印机和无袖金属手术导板正逐渐成为一种主要趋势。然而，无袖设计据报道更容易发生变形，这可能导致钻头内孔直径发生变化，并导致种植体植入位置发生偏差和不准确。碳纤维纳米粒子已被报道可改善 3D 打印树脂材料在工业应用中的性能。
本研究旨在评估和比较带金属袖套、无袖套和增强型无袖套的 3D 打印种植导板与导板钻头的耐磨性。
共纳入 66 个样本，每组 22 个样本。研究纳入三组：带金属袖套的 3D 打印手术导板（A 组）、无金属袖套（B 组）和碳纤维增强无金属袖套（C 组）。所有样本均在连续钻孔前后使用视觉测量机进行评估。将数据制成表格并进行统计学分析。
对获得的数据进行单因素方差分析和事后检验。对样本观察到的磨损数据进行统计分析，结果显示 B 组的磨损最高，平均值为 0.5036 ± 0.1118，A 组的磨损最小，平均值为 0.0228 ± 0.0154，C 组与 A 组几乎相似，平均值为 0.0710 ± 0.0381。结果表明，B 组与 A 组和 C 组之间存在显著差异（P < 0.05）。结果表明，A 组和 C 组之间观察到的磨损无显著差异（P > 0.05）。
带金属袖套和碳纤维增强无金属袖套的导板观察到的磨损几乎相似。碳纤维增强导板对导板钻头的耐受性更好，相当于金属袖套。因此，3D 打印树脂中添加碳纤维纳米粒子可提高强度，并可作为金属袖套的良好替代品，实现种植体的精确植入。
