义齿清洁剂对不同球帽附着体固位力的影响

发布时间：2018-12-30 18:17

【摘要】：目的本实验在体外模拟三种义齿清洁剂对两种球帽附着体的浸泡,运用疲劳试验机测定固位力的变化,旨在探讨不同义齿清洁剂对球帽附着体固位力的影响,为义齿清洁剂的临床应用提供指导。材料及方法1.选择球帽附着体阳性基台4个,O型卡坏帽8个,黄、红O型卡环垫各20个,随机分为四组,分别为对照组(水)、实验组(保丽净、氯己定、0.5%次氯酸钠),采用疲劳试验机测试各组件初始固位力,记录一次脱位时球帽附着体固位力随时间的变化。2.电热恒温箱下模拟临床义齿清洁剂运用一年的情况,记录各组球帽附着体模拟应用清洁剂1月、3月、6月、9月、1年时的固位力,将球帽附着体固定在疲劳试验机上进行循环摘戴实验,测定各组1000次脱位时的固位力。3.将各组实验数据运用SPSS19.0进行统计学分析(α=0.05)结果1.球帽附着体红色O型垫的初始固位力较黄色O型垫的初始固位力高,一次脱位时球帽附着体固位力随时间增长逐渐增加,曲线最高点代表球帽附着体的固位力,而后逐步降低后消失。2.红色及黄色球帽附着体经过三种义齿清洁剂浸泡12月后,固位力有显著性差异(P0.05),但比较各组衰减值发现组间无显著性差异(P0.05),探究影响固位力变化时的浸泡时间发现:三种义齿清洁剂模拟临床应用1月后附着体的固位力就发生明显变化(P0.05)3.清洁剂浸泡一年后测试各组固位力衰减率发现次氯酸钠组红色O型圈衰减率最高,与其它组有显著性差异(P0.05),而后经过1000次脱位后,次氯酸钠组固位力衰减率仍然较明显。4.通过描绘球帽附着体固位力随浸泡时间的变化曲线发现,对照组固位力无明显的衰减,而实验组中固位力随浸泡时间的增加而逐步降低。结论1.球帽附着体初始固位力较低,选择球帽附着体时应注意O型垫种类及数量的选择;义齿清洁剂对不同颜色的球帽附着体的固位力都有影响。在次氯酸钠溶液中,球帽附着体固位力衰减较其它组明显,因此临床中不建议次氯酸钠溶液作为清洁剂来处理球帽附着体。2.在浸泡义齿清洁剂1月后固位力就出现降低,因此短期的浸泡对球帽附着体固位力有影响。3.经过1000次的反复脱位,三组固位力均显著降低,与对照组有显著性差异,因此义齿清洁剂对最终固位力有影响
[Abstract]:Objective to simulate the immersion of three kinds of denture cleaners on two kinds of ball cap attachments in vitro, and to determine the change of retention force by using fatigue testing machine, in order to investigate the effect of different denture cleaners on the retention force of ball cap attachments. To provide guidance for clinical application of denture cleaner. Materials and methods 1. Four positive baskets were selected for ball cap attachment, 8 for O type bad cap, 20 for yellow and 20 for red O type clamping pad. Each group was randomly divided into four groups: control group (water), experimental group (Polaridine, chlorhexidine, 0.5% sodium hypochlorite). The initial retention force of each assembly was measured by fatigue testing machine, and the change of the retention force of the ball cap attachment with time was recorded when the ball cap was dislocated at one time. 2. Under the electrothermal incubator, the retention force of the simulated clinical denture cleaner for one year was recorded, and the retention force of each group of ball cap attachments during January, March, June, September, and one year was recorded. The ball cap attachment was fixed on the fatigue testing machine and the retention force of 1000 times dislocation was measured. The experimental data of each group were statistically analyzed by SPSS19.0 (伪 = 0. 05). The initial retention force of the red O pad is higher than that of the yellow O pad. The retention force of the ball cap attachment increases gradually with the time of the first dislocation, and the highest point of the curve represents the retention force of the ball cap attachment. Then gradually decreased and then disappeared. 2. After being soaked in three kinds of denture cleaners for 12 months, the retention forces of the red and yellow ball cap attachments were significantly different (P0.05), but there was no significant difference in attenuation values among the groups (P0.05). To explore the immersion time when affecting the retention force, it was found that the retention force of the attachment changed significantly after the clinical application of three kinds of denture cleaners (P0.05). After soaking in detergent for one year, the attenuation rate of retention force in each group was found to be the highest in sodium hypochlorite group, which was significantly different from that in other groups (P0.05), and then after 1000 dislocations, the attenuation rate of red O-ring was the highest in sodium hypochlorite group. The attenuation rate of retention force in sodium hypochlorite group is still obvious. 4. 4. By describing the curve of the retention force of the ball cap attachment with the immersion time, it was found that the retention force of the control group had no obvious attenuation, but the retention force in the experimental group gradually decreased with the increase of the immersion time. Conclusion 1. The initial retention force of the ball cap attachment is low, the selection of the type and quantity of the O-pad should be paid attention to when selecting the ball cap attachment, and the denture cleaner has an effect on the retention force of the ball cap attachment with different colors. In sodium hypochlorite solution, the retention force of the ball cap attachment is more attenuated than that of the other groups, so it is not recommended that sodium hypochlorite solution be used as a cleaning agent to treat the ball cap attachment. 2. The retention force decreased after one month after immersion denture cleaner, so short-term immersion has an effect on the retention force of ball cap attachment. After repeated dislocation for 1000 times, the retention force of the three groups was significantly lower than that of the control group, so the denture cleaner had an effect on the final retention force.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R783.6

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