摘要
目的:研究早期釉质龋形成后,渗透树脂治疗后不同抛光处理对其表面粗糙度的影响,为临床治疗中选择合适的抛光系统提供参考。方法:制取牛下切牙唇面样本54个,随机分为6组,设健康釉质组、早期釉质龋组,其余4组先用部分饱和酸缓冲系统形成早期釉质龋,然后进行渗透树脂治疗,根据抛光与否和抛光工具种类(橡皮杯、抛光碟、矽粒子)进行分组。采用表面粗糙度轮廓仪PGI800测量各组样本的表面粗糙度,表面粗糙度参数取轮廓算术平均偏差(Ra)和轮廓最大高度(Rz)。采用SPSS17.0软件包对数据进行统计学分析。结果:早期釉质龋组较健康釉质组表面粗糙度均值略大,但无显著差异(P>0.05);早期釉质龋渗透树脂治疗后,不抛光组表面粗糙度显著高于早期釉质龋组(P<0.05);渗透树脂治疗后,3种不同工具抛光组之间两两比较,表面粗糙度无显著差异(P>0.05);各抛光组较未抛光组表面粗糙度均减小,差异显著(P<0.05);各抛光组与早期釉质龋组相比,表面粗糙度均无显著差异(P>0.05)。结论:早期龋进行渗透树脂治疗后,表面粗糙度明显升高,需要进行抛光处理,使用橡皮杯和粒度较小的抛光碟抛光,是较有效的表面处理方法。
PURPOSE： To study the surface roughness of early carious lesions which were treated with resin infiltration and polished with different materials,and to provide reference for selection of appropriate polishing system.METHODS： Fifty-four labial surface specimens of mandibular incisors were created out of bovine teeth.They were randomly divided into 6 groups.One group was sound enamel group.Another group was early enamel carious group.Other specimens were treated with a partially saturated acidic buffer solution for preparation of initial artificial enamel caries.These initial artificial enamel caries were treated with resin infiltration.Then they were randomly divided into 4 groups according to polishing or not and type of polishing tool（rubber cups,polishing discs,HiLuster polishers）.The surface roughness of specimens in all groups were measured with Form Talysurf PGI 800.Arithmetical mean deviation of the assessed profile（Ra） and the maximum height of the profile（Rz） were used as measurement parameter.SPSS 17.0 software package was used for data analysis.RESULTS： Comparison of sound enamel surfaces and early carious surfaces revealed no significant difference in surface roughness（P＆gt;0.05）,but the mean value of the latter one was higher.After infiltration,the roughness of surfaces without polishing was significantly higher than that of early carious surfaces（P ＆lt;0.05）.After infiltration and polishing with different tools,there was no significant difference in surface roughness of every two groups（P＆gt;0.05）.The roughness of polishing groups after infiltration was significantly smaller than that of group without polished after infiltration（P＆lt;0.05）.Comparison of polishing surfaces after infiltration and early carious surfaces revealed no significant difference insurface roughness（P＆gt;0.05）.CONCLUSIONS： After early caries being treated with infiltration technique,the roughness of teeth surfaces increases significantly.Those surfaces should be polished.Rubber cup and polishing discs with smaller granularity are more effective and reasonable as the surface polishing materials.Supported by Project from Science and Technology Bureau of Qingdao City（KZJ-10）.
出处
《上海口腔医学》
CAS
CSCD
北大核心
2013年第4期402-406,共5页
Shanghai Journal of Stomatology
基金
青岛市科技局课题(KZJ-10)
关键词
早期龋
渗透树脂
抛光
表面粗糙度
Early caries
Resin infiltration
Polishing
Surface roughness
