铒激光预处理对牙本质、牙釉质粘结强度及CAD/CAM玻璃陶瓷嵌体修复牙体缺损边缘微渗漏的影响
The effect of erbium laser pretreatment on bond strength between dentin and enamel and microleakage at the edge of CAD/CAM glass ionomer cement restorations for repairing tooth defects
杨华旋 1陈任生 1黄家辉 1孔海影 1张林林1
作者信息
- 1. 深圳市龙岗区耳鼻咽喉医院 口腔科,广东 深圳 518172
- 折叠
摘要
目的:探讨铒激光预处理对牙本质、牙釉质粘结强度及CAD/CAM玻璃陶瓷嵌体修复牙体缺损边缘微渗漏的影响.方法:收集2020年1月-2023年1月口腔外科门诊拔除的新鲜、无龋坏变色、无隐裂智齿62颗,根据预处理方式不同,随机分为铒激光组和磷酸组,每组31颗,每组再随机分为2份,分别用于粘结强度测试(16颗)和微渗漏测试(15颗).比较2组牙釉质、牙本质抗剪切粘结强度和微渗漏程度及微渗漏评分分布情况.采用SPSS 17.0软件包对数据进行统计学分析.结果:铒激光组牙釉质、牙本质抗剪切粘结强度显著高于磷酸组(P＜0.05);铒激光组侧壁、龈壁微渗漏程度显著低于磷酸组(P＜0.05),铒激光组侧壁微渗漏评分主要为1分和2分,磷酸组侧壁微渗漏评分主要为2分,2组侧壁微渗漏评分分布相比,差异有统计学意义(P＜0.05);铒激光组龈壁微渗漏评分主要为1分和2分,磷酸组龈壁微渗漏评分主要为2分和3分,2组龈壁微渗漏评分分布相比,差异有统计学意义(P＜0.05).结论:铒激光预处理可提高瓷嵌体与牙本质、牙釉质粘结强度,同时还可减少CAD/CAM玻璃陶瓷嵌体微渗漏,增强嵌体边缘密合性.
Abstract
PURPOSE:To investigate the effects of erbium laser pretreatment on the bond strength of dentin and enamel,as well as microleakage at the edge of tooth defects repaired with computer-aided design(CAD)and computer-assisted manufacturing(CAM)glass-ceramic restorations for repairing dental defects.METHODS:A total of 62 fresh,nonde-cayed,nondiscoloration and noncracked wisdom teeth were collected from the Oral Surgery Clinic between January 2020 and January 2023.According to different pretreatment methods,they were randomly divided into two groups,erbium laser group and phosphoric acid group,with 31 teeth in each group.Each group was further divided into two subsets for bond strength testing(16 teeth)and microleakage testing(15 teeth).The shear bond strength between enamel and dentin of both groups was compared,as well as the degree and distribution of microleakage.Statistical analysis was performed with SPSS 17.0 software package.RESULTS:The shear bond strength between enamel and dentin of the erbium laser group was significantly higher than that of the phosphoric acid group(P＜0.05);the degree and distribution of microleakage at the lat-eral walls and gumline of the erbium laser group were significantly lower than those of the phosphoric acid group(P＜0.05).The scores of microleakage at the lateral walls of the erbium laser group mainly concentrated in grade 1 and 2,whereas those of the phosphoric acid group mainly concentrated in grade 2.There was significant difference in the distribution of lateral wall microleakage scores between the two groups(P＜0.05).The scores of microleakage at the gumline of the erbium laser group mainly concentrated in grade 1 and 2,whereas those of the phosphoric acid group mainly concentrated in grade 2 and 3.There was significant difference in the distribution of gumline microleakage scores between the two groups(P＜0.05).CONCLUSIONS:Erbium laser pretreatment can improve bonding strength between glass ionomer cement and dentin and enamel,reduce microleakage at the edge of CAD/CAM glass ionomer cement restorations,and enhance marginal fit.
关键词
铒激光/牙本质/牙釉质/粘结强度/CAD/CAM/玻璃陶瓷嵌体/微渗漏Key words
Erbium laser/Dentin/Enamel/Bond strength/CAD/CAM/Glass ionomer cement restorations/Microleakage引用本文复制引用
出版年
2024
NETL
NSTL
万方数据