A novel sensor for bite force determinations
A novel sensor for bite force determinations
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DOI：
10.1016/s0109-5641(02)00020-9
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发表时间：
2003-03-01
期刊：
影响因子：
5
通讯作者：
Bergmark, A
中科院分区：
文献类型：
--
作者：
Fernandes, CP;Glantz, POJ;Bergmark, A
目标。在六名佩戴圆锥形冠保留上颌可摘局部义齿的受试者中测试了基于力传感电阻器的新型咬合力传感器的临床实用性、准确性和精密度。方法。传感器的表面采用硅树脂材料制成，其机械性能与坚韧食品的机械性能相似。在两个独立系列的标准化咬合力测试中，使用传感器和应变计咬合叉记录次最大力水平。受试者在视觉反馈仪器的负载测试中得到协助。计算了咬合力传感器的可靠性估计，以显示其可重复性。连接到假体上的应变计用于确定负载测试期间的力分布模式。通过方差分析和 Scheffes 测试对使用新型咬合力传感器和咬合叉获得的咬合力结果进行了分析。通过 F 检验分析用应变计记录的应变模式。结果。咬合力传感器和咬合叉传感器在个体内咬合力水平（范围 50-300 N）方面没有显示出统计学上的显着差异。新传感器记录的咬合力取决于装载位置 (p < 0.05)、性别 (p < 0.05) 和测试对象 (p < 0.05)。经计算，新型传感器对于次最大咬合力的可靠性为 93%。应变计结果表明，新传感器产生的应变模式比咬合叉的方差更小 (p < 0.05)，因此在咬合测试中可以实现更高的精度。意义重大。所提出的仪器具有如此的临床优点，有利于其在假肢矫治器生物力学的实验性临床研究中的使用。 (C) 2002 年牙科材料学会。由爱思唯尔科学有限公司出版。保留所有权利。
Objectives. The clinical usefulness, accuracy and precision of a novel bite force sensor based on force sensing resistors were tested in six subjects wearing maxillary removable partial dentures retained by conical crowns.Methods. The surfaces of the sensor were manufactured in a silicone material that had mechanical proper-ties similar to those of tough foodstuffs. In two separate series of standardized bite force tests, submaximum force levels were recorded with the sensor and with a strain gaged bite fork. Subjects were assisted in the loading tests with visual feedback instrumentation. Reliability estimates for the bite force sensor were calculated in order to show their reproducibility. Strain gages attached to the prostheses were used to determine the pattern of force distribution during loading tests. The bite force results obtained with the new bite force sensor and with the bite fork were analyzed with ANOVA and Scheffes tests. The strain patterns registered with strain gages were analyzed with F-test.Results. The bite force sensor and the bite fork transducer showed no statistically significant differences in respect of intra-individual bite force levels (range 50-300 N). The bite forces registered with the new sensor were dependent on the loading position (p < 0.05), sex (p < 0.05) and test subject (p < 0.05). The reliability of the new sensor for submaximum bite forces was calculated to be 93%. Strain gage results showed that the new sensor generated strain patterns of less variance (p < 0.05) than the bite fork and therefore allowed for higher precision during biting tests.Significance. The presented instrument has such clinical merits, as to favor its use in experimental clinical studies on the biomechanics of prosthetic appliances. (C) 2002 Academy of Dental Materials. Published by Elsevier Science Ltd. All rights reserved.