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首页> 外文期刊>Acta Chirurgica Latviensis >Tactile Sensibility of Natural Teeth and Osseointegrated Dental Implants to Loading
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Tactile Sensibility of Natural Teeth and Osseointegrated Dental Implants to Loading

机译：天然牙齿和骨整合式种植牙对负载的触觉敏感性

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Dental implant therapy has become a popular method of replacing one or more missing teeth. Osseointegrated dental implants have been studied from histological, microbiologic and biomechanical point of view, but the neurophysiologic integration of the implants and the supported prostheses has received less attention. The sensory mechanism of dental implants is qualitatively different from that of natural teeth. Psychophysiological tests are used to determine the tactile sensibility perceived with the implants and teeth. Aim of the study. The purpose of this study was to compare tactile sensibility of natural teeth and osseointegrated dental implants. Material and methods. Forty-three patients were included in the study. Natural teeth were divided into two groups: non endodontically treated teeth (NETT) and endodontically treated teeth (ETT). Load tests were done by a computer-controlled pressure sensitive device (?Power Lab“ Data Acquisition System - model 4/25T, sensor - model MLT003/D; ADInstruments), specially modified for intraoral use. Pushing forces were applied parallel to the vertical axis of teeth and implants. The patient held a signal button which he/she activated as soon as touch was sensed. At this moment the computer registered passive absolute tactile threshold - measured in Newtons. The mean values of passive absolute tactile threshold for natural teeth and dental implants were calculated. Comparison of the mean values was performed by the means of t-test. Results. Passive absolute tactile threshold for osseointegrated dental implants was 2.39 N (SD=1.92), and for teeth - 0.67 N (SD=0.72), for non endodontically treated teeth it was 0.63 N (SD=0.72) and for endodontically treated teeth - 0.73 N (SD=0.69). The differences in mean values were statistically significant (p<0,0001) except for mean values of NETT vs. ETT. Conclusion. This study shows that patients with osseointegrated implants subjectively feel “touch” sensation when greater force is applied compared with natural teeth.
机译：牙种植体治疗已成为一种替换一颗或多颗缺牙的流行方法。已经从组织学，微生物学和生物力学的角度研究了骨整合的牙科植入物，但是植入物和受支持的假体的神经生理学整合却很少受到关注。牙齿植入物的感觉机制与天然牙齿的感觉机制在质量上有所不同。心理生理测试用于确定植入物和牙齿所感知的触感。研究目的。这项研究的目的是比较天然牙齿和骨整合式牙科植入物的触觉敏感性。材料与方法。该研究包括43名患者。天然牙齿分为两组：未经牙髓治疗的牙齿（NETT）和经牙髓治疗的牙齿（ETT）。负载测试是通过计算机控制的压敏设备（“ Power Lab”数据采集系统-4 / 25T型，传感器-MLT003 / D型; ADInstruments）进行的，特别针对口内使用进行了修改。平行于牙齿和植入物的垂直轴施加推力。病人握住一个信号按钮，一旦感觉到触摸，他/她便将其激活。此时，计算机记录了被动绝对触觉阈值-以牛顿为单位。计算了天然牙齿和牙科植入物的被动绝对触觉阈值的平均值。平均值的比较通过t检验进行。结果。骨整合牙齿植入物的被动绝对触觉阈值为2.39 N（SD = 1.92），而牙齿为0.67 N（SD = 0.72），未经牙髓治疗的牙齿为0.63 N（SD = 0.72），经牙髓治疗的牙齿为0.73 N（SD = 0.69）。除了NETT与ETT的平均值外，平均值的差异具有统计学意义（p <0.0001）。结论。这项研究表明，与天然牙齿相比，当施加更大的力时，骨结合植入物的患者主观上会感到“触碰”感。

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