搜索结果: 1-13 共查到“口腔材料学 Er”相关记录13条 . 查询时间(0.015 秒)
PDT联合Er:YAG激光防龋性及抗酸性的动物实验研究
光动力疗法 Er:YAG激光 维氏硬度 抗酸性
2020/6/2
探讨光动力疗法(PDT)联合Er:YAG激光对大鼠口腔内变异链球菌的杀菌性及对牙体硬组织抗酸性的影响。方法:将28只大鼠动物模型随机分为7组进行处理,通过分光光度法测定OD值,反映各组变形链球菌的生长变化情况;经0.1 mmol/L乳酸液浸泡24 h后检测钙磷溶出量;采用数字显微硬度仪进行乳酸处理前后的硬度测试;扫描电镜下观察各组牙齿表面形态、清洁度及牙本质小管开口等情况。
近年来,计算机辅助设计和计算机辅助制造（CAD/CAM）系统被引入口腔领域,这使得全瓷修复体的制作效率大大提高,应用也愈加广泛。全瓷修复体的远期使用效果与其在牙齿表面的粘接性能有着密切的关联,但目前对于全瓷修复体粘接面和牙本质表面粘接强度方面的研究还有待深入。现今,Er:YAG和Nd:YAG激光在口腔领域各方面发展迅速,在牙体硬组织和陶瓷表面处理方面的研究和应用也随之增多,但其对粘接强度影响方面的...
Er:YAG激光照射对牙科陶瓷材料粘接影响的研究进展
Er:YAG激光 陶瓷材料 粘接性能
2020/7/1
陶瓷材料因具有良好的生物学及美学性能而被广泛运用于牙体组织的缺损修复,其粘接性能对修复体远期效果至关重要。Er:YAG激光具有对硬组织安全、高效的切割能力,可改变陶瓷表面的微观结构,但其对陶瓷材料粘接性能的影响目前尚无统一定论。本文从Er:YAG激光作用于陶瓷材料表面处理的机制、对陶瓷材料粘接性能的影响以及Er:YAG激光在去除陶瓷修复体时的优势进行综述。
Er,Cr:YSGG水激光在慢性根尖周炎治疗中的应用
水激光 慢性根尖周炎 根管消毒
2018/5/25
探讨水激光在慢性根尖周炎治疗中的效果。方法 230颗慢性根尖周炎患牙,随机分成三组:A组76颗患牙采用水激光根管消毒后热牙胶垂直加压技术充填;B组76颗患牙采用水激光根管消毒后封氢氧化钙根管消毒糊剂1周后热牙胶垂直加压技术充填;C组78颗患牙采用根管预备后封氢氧化钙根管消毒糊剂1周后热牙胶垂直加压技术充填。根充后1周,1年分别复诊,观察疗效。结果 根管充填术后1周复查,出现根管治疗术后急症病例比例...
Er:YAG激光用于比格犬牙髓切断术
牙髓切断术 Er:YAG激光 牙本质 犬
2018/11/30
目的：通过比格犬动物试验，观察铒钇铝石榴石(erbium:yttrium aluminium garnet，Er:YAG)激光去除比格犬冠髓后剩余牙髓的变化及牙本质桥形成情况，探索Er:YAG激光照射与牙髓反应及牙本桥形成的关系。方法： 选取2只12月龄雄性比格犬前磨牙为试验牙，共24颗，分别应用200 mJ/20 Hz Er:YAG激光、100 mJ/20 Hz Er:YAG激光及传统机械方法去...
目的：探讨应用RFPT5-14工作尖的Er, Cr: YSGG激光照射对牙周炎患牙及健康牙根面微观结构改变以及粗糙度的影响。方法：选取8颗因牙周炎拔除的患牙，用超声刮治器去除根面牙石，另选取8颗因正畸减数或阻生智齿拔除的健康牙，将每颗牙根面分为4个区域，对应为1~4组，分别进行如下4种处理：（1）不处理；（2）Gracey刮治器进行根面平整30 s；（3）低功率激光照射30 s；（4）高功率激光照...
Spectroscopic Characterization of Enamel Surfaces Irradiated with Er:YAG Laser
Enamel Er:YAG laser XPS
2009/9/14
The purpose of this study was to investigate the effect of laser irradiation on the enamel surface spectroscopically. Polished bovine enamel surface was irradiated with an Er:YAG laser apparatus and c...
Bactericidal Effect of Er,Cr:YSGG Laser on Streptococcus mutans
Er Cr:YSGG laser Chlorhexidine gluconate Streptococcus mutans
2009/9/14
The aim of this study was to compare the antibacterial activities of Er,Cr:YSGG laser with two different power outputs against a chlorhexidine gluconate-based cavity disinfectant. A cavity tooth model...
Tensile Bond Strength of Er,Cr:YSGG Laser-irradiated Human Dentin to Composite Inlays with Two Resin Cements
Er Cr: YSGG laser Tensile bond strength Resin cement
2009/9/14
The purpose of this study was to investigate the tensile bond strength of composite inlays to human dentin with two different cavity preparation tools (bur versus Er, Cr: YSGG laser) and with two diff...
Analysis of Er:YAG Lased Dentin Using Attenuated Total Reflectance Fourier Transform Infrared and X-ray Diffraction Techniques
Er:YAG laser Fourier transform infrared spectroscopy (FT-IR/ATR) X-ray diffraction
2009/9/14
The purpose of this study was to investigate the chemical characteristics of dentin after Er:YAG laser irradiation using various output energies with or without water irrigation. Analysis was carried ...
Effect of Pulse Duration of Er: YAG Laser on Dentin Ablation
Er:YAG laser Pulse duration Dentin ablation
2009/9/11
The present study examined the effects on dentin ablation efficiency arising from various pulse durations of Er: YAG laser at a fixed energy fluence. Ten flat human dentin disks were prepared and expo...
Tensile Bond Strength of One-step Self-etch Adhesives to Er:YAG Laser-irradiated and Non-irradiated Enamel
Bond strength Er:YAG laser One-step adhesive
2009/9/11
This study determined the bond strengths to Er:YAG laser-irradiated and non-irradiated bovine enamel of three one-step self-etch adhesives (AQ Bond Plus (AQP), G-Bond (GB), and Clearfil Tri-S Bond (TS...
The aim of this study was to investigate the effect of Er:YAG laser irradiation on human dentin surface using X-ray photoelectron spectroscopy (XPS). 10 human dentin disks were prepared from extracted...