硅橡胶软衬材料表面构建仿章鱼吸盘微结构的体外研究

doi:10.13591/j.cnki.kqyx.2022.04.004

摘要/Abstract

摘要： 目的在硅橡胶软衬材料表面构建仿章鱼吸盘微结构,评价其对吸附力的影响,为进一步制作仿章鱼吸盘微结构的全口义齿基托组织面提供技术支撑,探索提高全口义齿固位力的新思路。方法实验组分为A~E 5组(吸盘直径分别为100、200、300、400、500 μm),通过3D打印仿章鱼吸盘微结构的阴模后,利用硅橡胶材料翻模制作带有不同尺寸仿章鱼吸盘微结构的样片,对照组为不带有微结构的平面硅橡胶样片。评价制作技术的精确性,以及在体外模拟口腔环境,通过万能材料试验机测试各组样片所能产生的吸附力,进行统计学分析。结果 3D打印阴模与预定设计尺寸参数相差7%~9%,硅橡胶翻制的微结构与预定设计尺寸参数误差缩小为1%~5%,部分表面有气泡。实验组A~E、对照组的吸附力分别为(0.20±0.04)、(0.16±0.03)、(0.13±0.04)、(0.12±0.02)、(0.14±0.02)、(0.12±0.03)N,其中100、200 μm的实验组吸附力明显增大,相比对照组具有统计学差异(P<0.05)。结论在硅橡胶软衬材料表面构建直径100、200 μm的仿章鱼吸盘微结构可以提高吸附力。在全口义齿基托组织面制作仿章鱼吸盘微结构可能会提高全口义齿固位力。

关键词: 章鱼吸盘, 全口义齿, 仿生, 硅橡胶软衬材料, 吸附力

Abstract: Objective Microstructure inspired by octopus suction cups was constructed on the surface of silicone rubber soft lining materials to evaluate its impact on adhesion and provide technical support for further producing tissue surface of complete denture base with it,and explore new ideas to improve retention of complete denture. Methods The experimental group was divided into five groups A-E (100, 200, 300, 400, 500 μm in diameters of suction cups). After producing negative mold of microstructures inspired by octopus suction cups with 3D printing, samples with different sizes were made by turning over the mold with silicone rubber material. The control group was plane silicone rubber samples without microstructure. Accuracy of production technology was evaluated and adsorption force of samples in each group was tested by universal mechanic material tester under simulated oral environment in vitro. Then statistical analysis was conducted. Results The deviation between 3D printing negative mold and predetermined size was about 7%-9%, while that between microstructures made from silicone rubber material and predetermined size reduced to 1%-5%. Bubbles can be found on some surfaces. Adhesion of different groups (the experimental groups A-E and the control group) was (0.20±0.04), (0.16±0.03), (0.13±0.04), (0.12±0.02), (0.14±0.02), (0.12±0.03)N. The adhesion in groups with diameter of 100 μm and 200 μm increased significantly, which was statistically different from the control group (P<0.05). Conclusion On the surface of silicone rubber soft denture liner, constructing microstructures inspired by octopus suction cups with diameter of 100 μm and 200 μm can improve adsorption. Using octopus suction cup-liked microstructures on tissue surface of complete denture base may improve its retention.

Key words: octopus suction cup, complete denture, bionic, silicone rubber soft lining material, adhesion

中图分类号:

R783.1

董梦璐, 杨孟孟, 李全利. 硅橡胶软衬材料表面构建仿章鱼吸盘微结构的体外研究[J]. 口腔医学, 2022, 42(4): 304-308.

DONG Menglu, YANG Mengmeng, LI Quanli. In vitro study on constructing microstructures inspired by octopus suction cups on the surface of silicone rubber soft denture liner[J]. Stomatology, 2022, 42(4): 304-308.

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