【摘要】：目的本實(shí)驗(yàn)在體外模擬三種義齒清潔劑對兩種球帽附著體的浸泡,運(yùn)用疲勞試驗(yàn)機(jī)測定固位力的變化,旨在探討不同義齒清潔劑對球帽附著體固位力的影響,為義齒清潔劑的臨床應(yīng)用提供指導(dǎo)。材料及方法1.選擇球帽附著體陽性基臺4個,O型卡壞帽8個,黃、紅O型卡環(huán)墊各20個,隨機(jī)分為四組,分別為對照組(水)、實(shí)驗(yàn)組(保麗凈、氯己定、0.5%次氯酸鈉),采用疲勞試驗(yàn)機(jī)測試各組件初始固位力,記錄一次脫位時球帽附著體固位力隨時間的變化。2.電熱恒溫箱下模擬臨床義齒清潔劑運(yùn)用一年的情況,記錄各組球帽附著體模擬應(yīng)用清潔劑1月、3月、6月、9月、1年時的固位力,將球帽附著體固定在疲勞試驗(yàn)機(jī)上進(jìn)行循環(huán)摘戴實(shí)驗(yàn),測定各組1000次脫位時的固位力。3.將各組實(shí)驗(yàn)數(shù)據(jù)運(yùn)用SPSS19.0進(jìn)行統(tǒng)計(jì)學(xué)分析(α=0.05)結(jié)果1.球帽附著體紅色O型墊的初始固位力較黃色O型墊的初始固位力高,一次脫位時球帽附著體固位力隨時間增長逐漸增加,曲線最高點(diǎn)代表球帽附著體的固位力,而后逐步降低后消失。2.紅色及黃色球帽附著體經(jīng)過三種義齒清潔劑浸泡12月后,固位力有顯著性差異(P0.05),但比較各組衰減值發(fā)現(xiàn)組間無顯著性差異(P0.05),探究影響固位力變化時的浸泡時間發(fā)現(xiàn):三種義齒清潔劑模擬臨床應(yīng)用1月后附著體的固位力就發(fā)生明顯變化(P0.05)3.清潔劑浸泡一年后測試各組固位力衰減率發(fā)現(xiàn)次氯酸鈉組紅色O型圈衰減率最高,與其它組有顯著性差異(P0.05),而后經(jīng)過1000次脫位后,次氯酸鈉組固位力衰減率仍然較明顯。4.通過描繪球帽附著體固位力隨浸泡時間的變化曲線發(fā)現(xiàn),對照組固位力無明顯的衰減,而實(shí)驗(yàn)組中固位力隨浸泡時間的增加而逐步降低。結(jié)論1.球帽附著體初始固位力較低,選擇球帽附著體時應(yīng)注意O型墊種類及數(shù)量的選擇;義齒清潔劑對不同顏色的球帽附著體的固位力都有影響。在次氯酸鈉溶液中,球帽附著體固位力衰減較其它組明顯,因此臨床中不建議次氯酸鈉溶液作為清潔劑來處理球帽附著體。2.在浸泡義齒清潔劑1月后固位力就出現(xiàn)降低,因此短期的浸泡對球帽附著體固位力有影響。3.經(jīng)過1000次的反復(fù)脫位,三組固位力均顯著降低,與對照組有顯著性差異,因此義齒清潔劑對最終固位力有影響
[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 (偽 = 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.
【學(xué)位授予單位】：鄭州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：R783.6

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