The aim of this study was to investigate the effects of the application of gaseous ozone and Nd:YAG laser on glass-fibre post bond strength. Forty-two madibular premolar roots were cut, endodontically instrumented and irrigated with 2.5% NaOCl. Post spaces were prepared and roots were divided into three groups (n = 14). The antimicrobial pretreatment was conducted as follows: gaseous ozone, Nd:YAG laser and control (no additional disinfection methods). Scanning electron microscope analysis was made for each group (n = 2). A resin cement was used for luting the posts. For push-out test, each root was cut horizontally (two cervical, two middle and two apical). Statistical analyses were performed with one-way anova (α = 0.05). Fracture types were observed. There was no statistically significant difference between the groups (P > 0.05). There were statistically significant differences in cervical and apical segments of laser and control groups (P < 0.05). The disinfection of the post spaces with Nd:YAG laser and ozone had no adverse effects on bond strength of glass-fibre post.

译文

这项研究的目的是研究气态臭氧和Nd:YAG激光对玻璃纤维后粘结强度的影响。切开42个颌前磨牙根,进行牙髓器械治疗并用2.5% NaOCl冲洗。准备了柱子空间,将根分为三组 (n = 14)。抗菌预处理如下: 气态臭氧,Nd:YAG激光和对照 (无其他消毒方法)。对每组进行扫描电子显微镜分析 (n = 2)。使用树脂水泥来润滑柱子。对于推出测试,将每个根部水平切割 (两个子宫颈,两个中间和两个顶端)。用单因素方差分析 (α = 0.05) 进行统计分析。观察到骨折类型。各组间差异无统计学意义 (P> 0.05)。激光组和对照组的宫颈和根尖节段差异有统计学意义 (P <0.05)。Nd:YAG激光和臭氧对桩间隙的消毒对玻璃纤维桩的粘结强度没有不利影响。

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