Effect of surface treatment using Er:YAG laser with different parameters on the bond strength of fiber posts
10.3969/j.issn.2095-4344.2014.47.015
- VernacularTitle:不同参数铒：钇激光表面处理后纤维桩的黏结强度
- Author:
Xiaojie LI
;
Shuhai HU
;
Ming DONG
;
Nuo XU
;
Xiang REN
;
Enjun ZUO
- Publication Type:Journal Article
- Keywords:
lasers;
surface properties;
dentin-bonding agents;
dental bonding
- From:
Chinese Journal of Tissue Engineering Research
2014;(47):7627-7632
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Recent years, fiber posts and resin cores have been widely used in repairing the endodonticaly treated teeth with satisfactory effect. Erbium:yttrium aluminum garnet (Er:YAG) laser is a new type of water power laser system, which can be used for surface treatment of fiber posts. But studies on the effect of Er:YAG laser surface treatment on the bond strength of fiber posts are rarely reported. OBJECTIVE: To evaluate the effect of surface treatment utilizing Er:YAG laser irradiation with different parameters on the bond strength of fiber posts to root canal dentin. METHODS: Fifty human maxilary central incisors that had similar dimensions were used. After endodontic treatment, removal of the crown and canal preparation, ParaPost FIBER LUX glass fiber posts were cemented into the root canals. According to the method of surface treatment, 50 teeth were randomly divided into: no surface treatment as control group; four groups undergoing surface preparation with Er:YAG laser with four different power settings (150, 250, 350 and 450 mJ at 10 Hz for 60 s at 100-μs pulse duration), named 1.5, 2.5, 3.5, and 4.5 W Er:YAG laser irradiation groups, respectively. RESULTS AND CONCLUSION: The mean bond strength values reduced from the cervical to the apical root canal, and the bond strength of the dental cervix was significantly different from that of middle and apical thirds (P < 0.05), but there was no difference between the middle and apical thirds (P> 0.05). Regardless of the different part of the root slices, the bond strength was highest in the 4.5 W Er:YAG laser irradiation group, showing significant difference from other groups (P < 0.05). These findings indicate that 4.5 W Er:YAG laser irradiation significantly increases the bond strength of the fiber posts to root canal dentin.
