中国组织工程研究2017，Vol.21Issue(10)：1483-1488,6.DOI:10.3969/j.issn.2095-4344.2017.10.002
不同材料充填根管后即刻与延迟桩道预备对根尖封闭性能的影响
Influence of immediate or delayed post space preparation on the apical sealing ability of different root canal sealers
兰玉燕 1黄海霞 1范丽苑 1蒲琳 1刘敏 1孙黎波1
作者信息
- 1. 四川西南医科大学附属口腔医院口腔修复科及口颌面修复重建和再生实验室,四川省泸州市 646000
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摘要
Abstract
BACKGROUND: Apical sealing ability is the key to ensure the long-term curative effect of root canal therapy. The post space preparation exposes some inevitable influence on root canal sealing ability, so how to minimize this effect becomes a hot spot.OBJECTIVE: To explore the effects of immediate or delayed post space preparation on the apical sealing ability of different root canal sealers.METHODS: Forty-eight extracted human premolar teeth were obtained, and the tooth crown was cut off. The samples were randomly divided into three groups (n=16 teeth per group). Group A underwent the immediate post space preparation; group B underwent the delayed post space preparation; group C without the post space preparation. Then all groups were subdivided into two groups, and then were filled with the gutta-percha/AH-Plus (groups A1, B1 and C 1)or the gutta-percha/mineral trioxide aggregate (groups A2, B2 and C2). The depth of apical dye penetration was measured using pressure-driven system. RESULTS AND CONCLUSION: There were no significant differences in the apical microleakage between groups A1 and B1, A2 and B2, C1 and C2 (P > 0.05). The apical microleakage in the group A1 was significantly higher than that in the group A2, and the group B1 also showed higher apical microleakage than the group B2 (P < 0.05). Our findings suggest that either immediate or delayed post space preparation exposes little influence on the apical microleakage after root canal filling with gutta-percha/mineral trioxide aggregate, which exhibits better apical sealing ability than the AH-plus.关键词
生物材料/口腔生物材料/矿物三氧化物凝聚体/根尖封闭性/即刻桩道预备/延迟桩道预备/AH-plus分类
医药卫生引用本文复制引用
兰玉燕,黄海霞,范丽苑,蒲琳,刘敏,孙黎波..不同材料充填根管后即刻与延迟桩道预备对根尖封闭性能的影响[J].中国组织工程研究,2017,21(10):1483-1488,6.
