El-Sheikh Ali M, Hobkirk John A, Howell Peter G T, Gilthorpe Mark S
Department of Prosthetic Dentistry, Faculty of Dentistry, Tanta University, Tanta, Egypt.
Int J Oral Maxillofac Implants. 2003 Mar-Apr;18(2):266-72.
This study investigated the changes that might occur in passive tactile sensibility during a period of 3 months following Implant placement in a group of edentulous subjects treated with dental implants. The effect of changing the velocity of force application on passive tactile sensibility was also investigated.
Five edentulous subjects who had been treated (as a part of an immediate loading study) with 2 or more Nobel Biocare dental implants in the anterior mandible were studied. Pushing forces were applied directly and perpendicular to the long axes of the abutments until the subjects felt the first sensation of pressure, using a computer-controlled, custom-made device. The force was measured with an integral transducer. The applied force had a ramped staircase pattern, which was used at 2 different tip velocities. The measurements were taken on 4 occasions: 1, 2, 4, and 12 weeks after fitting the abutments.
Statistical analysis, using multilevel modeling, demonstrated that there was a significant decrease In the tactile threshold over successive weeks following implant placement. It also demonstrated that high velocity exhibited a higher threshold than low velocity.
It could be concluded that there was a significant increase In passive tactile sensibility during the healing phase following implant placement.
本研究调查了一组接受牙种植体治疗的无牙颌受试者在种植体植入后3个月内被动触觉敏感性可能发生的变化。还研究了改变力施加速度对被动触觉敏感性的影响。
研究了5名在下颌前部接受2颗或更多诺贝尔生物保健牙种植体治疗（作为即刻负重研究的一部分）的无牙颌受试者。使用计算机控制的定制装置，直接并垂直于基台的长轴施加推力，直到受试者感觉到第一次压力感。用内置传感器测量力。施加的力呈斜坡阶梯模式，在2种不同的尖端速度下使用。在安装基台后的1周、2周、4周和12周进行4次测量。
使用多水平模型进行的统计分析表明，种植体植入后的连续几周内触觉阈值显著降低。还表明高速显示出比低速更高的阈值。
可以得出结论，种植体植入后的愈合阶段被动触觉敏感性显著增加。
