PDF(Pubmed)
Abstract：
BACKGROUND Measurement of bite force plays a crucial role in assessment of the masticatory system. With a growing interest in detecting occlusal irregularities, bite force sensors have garnered attention in the biomedical field. This study aimed to introduce a hydrogel bite force sensor, based on hydroxyethyl-cellulose-fructose-water (HEC-F-water), for premolar and molar teeth, and to evaluate it using optical profilometry, infrared spectroscopy (FTIR), and Instron Tension testing system, with 2.5 cm (1 inch) margins at top, bottom, right, and left. MATERIAL AND METHODS We fabricated 20 HEC-F-water hydrogel samples sized with surface of 1×1 cm, with 2 different widths - 1 mm and 5 mm. The samples were characterized using optical profilometry and FTIR and their electrical characteristics were determined using an impedance analyzer. Aluminum (Al) electrodes, fabricated using Cutting Plotter, were used to form a HEC-F-water-based transducer, which was used for bite force sensing. The Instron tensile testing system was employed, utilizing 3D printed models of the upper and lower jaw, to simulate biting. Forces in the range between 40 N and 540 N were exerted upon the transducer, and the output change in the electrical signal was measured. RESULTS The study determined the transfer function between bite force and capacitance. The fabricated sensor exhibited a sensitivity of 3.98 pF/N, an input range of 500 N, output range of 2 nF, and accuracy of 95.9%. CONCLUSIONS This study introduces an edible bite force sensor employing an edible hydrogel as a dielectric, presenting a novel avenue in the development of edible sensorics in dentistry.
摘要：
背景技术咬合力的测量在咀嚼系统的评估中起着至关重要的作用。随着人们对检测咬合不规则性的兴趣越来越大，咬力传感器在生物医学领域引起了人们的关注。本研究旨在介绍一种水凝胶咬合力传感器,基于羟乙基-纤维素-果糖-水（HEC-F-水），前磨牙和磨牙，并使用光学轮廓术对其进行评估，红外光谱(FTIR),和Instron张力测试系统，顶部有2.5厘米（1英寸）的边距，底部,对,然后离开。材料和方法我们制作了20个HEC-F-水水凝胶样品，尺寸为1×1厘米，具有2种不同的宽度-1毫米和5毫米。使用光学轮廓测定法和FTIR表征样品，并使用阻抗分析仪确定其电特性。铝(Al)电极,使用切割绘图仪制造，用于形成HEC-F-水基换能器，用于咬力感测。采用Instron拉伸测试系统，利用上下颚的3D打印模型，模拟咬人。在传感器上施加40N和540N之间的力,并测量电信号的输出变化。结果该研究确定了咬合力和电容之间的传递函数。制造的传感器表现出3.98pF/N的灵敏度，输入范围为500N,2nF的输出范围，准确率为95.9%。结论本研究介绍了一种可食用的咬合力传感器，该传感器采用可食用的水凝胶作为电介质，为牙科可食用感觉学的发展提供了一条新颖的途径。
