掺铒钇铝石榴石激光对层压贴面脱粘强度的影响。
Effect of Er:YAG laser on debonding strength of laminate veneers.
作者信息
Iseri Ufuk, Oztoprak Mehmet Oguz, Ozkurt Zeynep, Kazazoglu Ender, Arun Tulin
机构信息
Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkiye.
Department of Orthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkiye.
出版信息
Eur J Dent. 2014 Jan;8(1):58-62. doi: 10.4103/1305-7456.126243.
OBJECTIVE
The purpose of this study was to evaluate the debonding strength of laminate veneers after using erbium-doped: yttrium aluminium garnet (Er:YAG) laser.
MATERIALS AND METHODS
A total of 60 bovine mandibular incisor teeth were divided into two groups (n = 30). Cylindrical specimens (0.7 mm × 5 mm) were fabricated from Empress II ceramic. Then, they were cemented to incisors using dual-cured resin cement (Variolink II). In the first group, no laser application was performed. The Er:YAG laser was applied on each laminate veneer at the test group for 9 s by using the scanning method. Shear force to remove the laminate veneers were applied with universal testing machine at a crosshead speed of 1 mm/min.
RESULTS
Results of this study exhibited significant differences between the control (27.28 ± 2.24 MPa) and test group (3.44 ± 0.69 MPa) (P < 0.05).
CONCLUSION
This study shows that application of Er:YAG laser decreased the bond strength of laminate veneers.
目的
本研究旨在评估掺铒钇铝石榴石（Er:YAG）激光照射后全瓷贴面的脱粘强度。
材料与方法
选取60颗牛下颌切牙，分为两组（n = 30）。采用Empress II陶瓷制作圆柱形试件（0.7 mm×5 mm）。然后，使用双固化树脂粘结剂（Variolink II）将其粘结到切牙上。第一组不进行激光照射。试验组采用扫描法对每个全瓷贴面照射Er:YAG激光9秒。使用万能试验机以1 mm/min的十字头速度施加去除全瓷贴面的剪切力。
结果
本研究结果显示，对照组（27.28±2.24 MPa）与试验组（3.44±0.69 MPa）之间存在显著差异（P < 0.05）。
结论
本研究表明，Er:YAG激光照射会降低全瓷贴面的粘结强度。
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