Bond strengths of an epoxy resin-based fiber post with four adhesive systems
Objectives: To investigate the push-out bond strengths of one epoxy resin-based quartz-fiber post with four adhesive systems. Method and Materials: Forty-four single-rooted, single-canal teeth were randomly divided into four groups (n = 11): One-step (One-Step+ Duo-link; Bisco), Variolink II (Excite DSC + Variolink II; Ivoclar Vivadent), Panavia F(ED primer + Panavia F; Kuraray), and RelyX (RelyX Unicorn; 3M ESPE). All teeth crowns were removed, and the roots were treated with root canal therapy. Four adhesive systems were employed for bonding of one type of quartz-fiber post, strictly according to the manufacturers instructions. Ten roots in each group were transversely sectioned into cervical, middle, and apical third slices 2 mm thick, and the bond strengths were measured with the push-out test. The other root was processed for SEM analysis. Two-way ANOVA, one-way ANOVA, and Student-Newman-Keuls test were used for statistical analysis. Results: The push-out bond strengths were 7.15 ± 3,43 MPa (RelyX), 12.48 ± 9.33 MPa (One-step), 2.96 ± 2.76 MPa (Panavia F), and 13.43 ± 6.14 MPa (Variolink II). Two-way ANOVA showed statistically significant differences among adhesive systems (P < .05) and root regions (P < .05). The bond strengths of One-step and Variolink II groups were statistically higher than those of RelyX and Panavia F groups. The bond strengths of the cervical region of Onestep and Panavia F groups were statistically significantly higher than those of the other two regions. The SEM images showed uniform and long resin tags in One-step and Variolink II groups, whereas few or no resin tags were visible in the other two groups. Conclusion: The type of adhesive system and root region had a significant influence on the bond strengths of the adhesively luted fiber posts. Total-etching technique achieved better bond strength than did the self-etching technique.
adhesive system bond strength fiber post push-out test root dentin self-etching SEM observation total etching
ZhiGang Wang Ya Li Ji FuQiang Zhang
Department of stomatology, The Peoples Hospital of Hengn Province, Zhengzhou, Peoples Republic of School of Stomatology, ZhengZhou University, ZhengZhou Henan Province, Peoples Republic of China Department of Prosthodontics.school of stomatology, 9th Peoples Hospital, ShangHai JiaoTong Univers
国际会议
上海
英文
377-384
2011-12-28（万方平台首次上网日期，不代表论文的发表时间）