摘要
目的:评价Er:YAG激光备洞对树脂充填材料边缘微渗漏的影响。方法:选择48颗年轻前磨牙随机分成4组,每组12颗牙,用Er:YAG激光或高速牙钻制备ⅴ类洞。对照组:牙钻备洞+35%磷酸酸蚀;实验1组:激光备洞+35%磷酸酸蚀;实验2组:激光备洞+自酸蚀粘接;实验3组:单纯激光备洞。树脂充填,经冷热循环试验后染色24h,体视显微镜下观察微渗漏,统计学处理数据。结果:龈壁的染料渗透,4组间无统计学差异;壁的染料渗透,以实验3组较明显,与对照组、实验1、2组有统计学差异(P<0.05);各组内壁的染料渗透均比龈壁轻,但没有统计学差异。结论:Er:YAG激光备洞,35%磷酸酸蚀或自酸蚀粘接处理可减少洞壁与树脂充填边缘的微渗漏。
Objective: To observe the edge of microleakage of Er: YAG laser prepared cavities filling resin materials.Methods: 48 young and premolars were randomly divided into 4 groups.Er: YAG laser or high-speed dental drill were used to prepare ⅴ class cavities.Control group: Preparation of cavities + acid by 35% phosphoric acid.Experimental group 1: laser preparation + acid by 35% phosphoric acid.Experimental group 2: laser preparation + acid by self-etching adhesive.Experimental group 3: simple laser preparation.We then filled resin thermal cycling,test after staining 24h,observed under a stereomicroscope microleakage and gave statistical analysis.Results: In each group,gingival wall of the hole had no significant difference in dye penetration.Dye penetration of occlusal surface of the experimental group 3 was significantly higher than the control group,experimental group 1,2(P0.05).In each group,dye penetration of the occlusal wall of hole was lighter than the gingival wall(P0.05).Conclusion: Er: YAG laser prepared hole,followed by 35% phosphoric acid or self-etching bonding treatment can reduce the edge microleakage of the wall by resin restorations.
出处
《口腔医学研究》
CAS
CSCD
北大核心
2011年第11期1005-1007,共3页
Journal of Oral Science Research