乙醇对弹力链力值衰减影响的研究  

Effect of alcohol on force degradation of elastomeric chains

作　　者：王岩[1] 李志媛[1] 刘奕[1] 

机构地区：[1]中国医科大学附属口腔医院奉天门诊,辽宁省口腔医学研究所,辽宁沈阳110013

出　　处：《口腔医学》2015年第1期11-14,53,共5页Stomatology

基　　金：辽宁省科学技术计划项目(2013225090)

摘　　要：目的通过体外实验研究乙醇是否加快弹力链的力值衰减。方法将5组3个圈短距型弹力链拉伸2.45 N力值,置于37℃人工唾液环境,每日以26.9%乙醇、14%乙醇、含乙醇漱口水、无乙醇漱口水以及人工唾液处理2次,每次60 s;利用电子推拉力仪,测量弹力链在加力24 h、7 d、14 d、21 d、28 d的剩余力值大小以及各测量时间点的力值衰减百分比。结果所有时间点所测结果中,实验组剩余力值均较对照组小。另外,不同浓度乙醇组间各个时间点的剩余力值,差异无显著性;含乙醇漱口水组各时间点的剩余力值与26.9%乙醇组相当,差异无显著性;无乙醇漱口水组各时间点的剩余力值与人工唾液组相当,差异无显著性。实验组在各个测量时间点的衰减率虽有所不同,但差异无显著性。对照组在各个测量时间点的衰减率基本相似。各组的力值衰减主要发生在第1天,随后进入一个相对平缓的阶段,实验组力值衰减整体高于对照组。结论乙醇可加快弹力链力值衰减速度,在14.0%~26.9%范围内不受其浓度的影响;含乙醇漱口水中,乙醇是主要影响弹力链力值衰减的因素。Objective To test the effect of alcohol on force decay of elastomeric chains in vitro. Methods Elastomeric chains of close type were divided into five test groups. Three test groups were exposed to different alcohol concentrations（ 14. 0% and 26. 9%）,mouth rinses（ 26. 9% alcohol and 0% alcohol） and artificial saliva for 60 seconds twice a day. The chains were stretched to produce the initial force of 2. 45 N. Then the experiment groups were arranged by the orthogonal design,and the stretched length of different groups of chains were maintained respectively in artificial saliva environment of 37 ℃. The remaining forces of the elastomeric chains were recorded at different moments in 4 weeks. Then the percentage of remaining force was calculated. Results Test groups with the treatment of alcohol / alcoholic mouthwash water had a lower remaining force of the elastomeric chain at each measurement time point and a higher percentage of force degradation than the control groups,and the difference was statistically significant. The force of elastomeric chain gradually decreased over time,under the condition of thermal cycle. The force degradation was the fastest within 24 hours. Force decay percentage increased slightly between 24 hours and 28 days. Conclusions Alcohol can exacerbate the force degradation of elastomeric chain. The force of elastomeric chain stabilized after 24 hours under the condition of thermal cycle.

关 键 词：弹力链 力值衰减 乙醇 

分 类 号：R783.5[医药卫生—口腔医学]