华西口腔医学杂志2011，Vol.29Issue(2)：132-135,4.DOI:10.3969/j.issn.1000-1182.2011.02.006
纤维桩和粘接系统对粘接界面形态及破坏方式影响的研究
Morphological and failure mode study of different fiber posts luted with different adhesive systems to root dentin
张晓 1李津乐 2郝亮2
作者信息
- 1. 郑州大学口腔医院,口腔修复科,郑州450052
- 2. 口腔疾病研究国家重点实验室,四川大学,成都610041
- 折叠
摘要
Abstract
Objective To investigate the correlation of morphological characteristics and failure modes of two types of glass-fiber posts luted with self-adhesive resin cement and etch-and-rinsc adhesive system. Methods Thirty-six intact single-rooted premolars were collected and removed the crown. After root canal therapy, teeth were randomly divided into 4 groups. Group A: Self-adhesive with POPO fiber post. Group B: Etch-and-rinse with POPO fiber posts, Group C: Self-adhesive with Para Post Group D: Etch-and-rinse with Para Post. Each root was sectioned into six 1 mmthick serial slices and a push-out test was performed. The dentin-cement-post adhesive interface of each specimen and failure modes after fracture were evaluated by stereomicroscope observation. Results Interface morphology observe indicated that voids present in group B(64.2％) and D(66.7％) were significantly higher than group A(5.8％) and C (13.7％) (P＜0.001). Interface gaps appeared at the resin-dentine interface in group D (41.2％) were significantly higher than group A(13.5％) and C(11.8％)(P＜0.008 3), and the failure modes in each group were significantly different (P＜0.008 3) except for group A and B (P=0.69). Conclusion Voids present in cement layer were associated with the luting agent involved. Morphological characteristics of the fiber post-resin luting agent-root dentin adhesive interface were discrepant with failure modes in different root region. There were interaction between adhesive systems and fiber posts.关键词
纤维桩/自粘接树脂黏固剂/界面形态学Key words
fiber post/ self-adhesive resin cement/ interface morphology分类
医药卫生引用本文复制引用
张晓,李津乐,郝亮..纤维桩和粘接系统对粘接界面形态及破坏方式影响的研究[J].华西口腔医学杂志,2011,29(2):132-135,4.
