da Silva Monica Barros, Tavarez Rudys Rodolfo de Jesus, de Assis Fernanda Silva, Tonetto Mateus Rodrigues, Neto Thiago Porto, Bhandi Shilpa H, El-Mowafy Omar, Porto Neto Sizenando de Toledo, Bandeca Matheus Coelho
Department of Dentistry, CEUMA University, São Luis, Maranhao, Brazil.
Department of Postgraduate Program in Integrated Dental Sciences, University of Cuiabá, Mato Grosso, Cuiabá
J Contemp Dent Pract. 2015 Feb 1;16(2):147-53. doi: 10.5005/jp-journals-10024-1652.
The purpose of this study was to evaluate the effect of self-adhesive and self-etching resin cements on the bond strength of nonmetallic posts in different root regions.
Sixty single-rooted human teeth were decoronated, endodontically treated, post-space prepared, and divided into six groups. Glass-fiber (GF) posts (Exacto, Angelus) and fiber-reinforced composite (FRC) posts (EverStick, StickTeck) were cemented with self-adhesive resin cement (Breeze) (SA) (Pentral Clinical) and self-etching resin cement (Panavia-F) (SE) (Kuraray). Six 1-mm-thick rods were obtained from the cervical (C), middle (M), and apical (A) regions of the roots. The specimens were then subjected to microtensile testing in a special machine (BISCO; Schaumburg, IL, USA) at a crosshead speed of 0.5 mm/min. Microtensile bond strength data were analyzed with two-way ANOVA and Tukey's tests.
Means (and SD) of the MPa were: GF/SA/C: 14.32 (2.84), GF/SA/M: 10.69 (2.72), GF/SA/A: 6.77 (2.17), GF/SE/C: 11.56 (4.13), GF/SE/M: 6.49 (2.54), GF/SE/A: 3.60 (1.29), FRC/SA/C: 16.89 (2.66), FRC/SA/M: 13.18 (2.19), FRC/SA/A: 8.45 (1.77), FRC/SE/C: 13.69 (3.26), FRC/SE/M: 9.58 (2.23), FRC/SE/A: 5.62 (2.12). The difference among the regions was statistically significant for all groups (p < 0.05). The self-adhesive resin cement showed better results than the self-etching resin cement when compared to each post (p < 0.05). No statistically significant differences in bond strengths of the resin cements when comparable to each post (p > 0.05).
The bond strength values were significantly affected by the resin cement and the highest values were found for self-adhesive resin cement.
本研究的目的是评估自粘型和自酸蚀树脂水门汀对不同牙根区域非金属桩粘结强度的影响。
选取60颗单根人牙，截冠、进行根管治疗、预备桩道，然后分为六组。采用自粘型树脂水门汀（Breeze）（SA）（Pentral Clinical）和自酸蚀树脂水门汀（Panavia-F）（SE）（可乐丽）粘结玻璃纤维（GF）桩（Exacto，安杰卢斯）和纤维增强复合材料（FRC）桩（EverStick，StickTeck）。从牙根的颈部（C）、中部（M）和根尖部（A）截取6根1毫米厚的桩段。然后将标本在一台特殊机器（BISCO；美国伊利诺伊州绍姆堡）上以0.5毫米/分钟的十字头速度进行微拉伸试验。微拉伸粘结强度数据采用双向方差分析和Tukey检验进行分析。
以兆帕计的平均值（及标准差）为：GF/SA/C：14.32（2.84），GF/SA/M：10.69（2.72），GF/SA/A：6.77（2.17），GF/SE/C：11.56（4.13），GF/SE/M：6.49（2.54），GF/SE/A：3.60（1.29），FRC/SA/C：16.89（2.66），FRC/SA/M：13.18（2.19），FRC/SA/A：8.45（1.77），FRC/SE/C：13.69（3.26），FRC/SE/M：9.58（2.23），FRC/SE/A：5.62（2.12）。所有组中各区域之间的差异具有统计学意义（p < 0.05）。与每种桩相比，自粘型树脂水门汀的效果优于自酸蚀树脂水门汀（p < 0.05）。与每种桩相比，树脂水门汀的粘结强度无统计学显著差异（p > 0.05）。
粘结强度值受树脂水门汀的显著影响，自粘型树脂水门汀的粘结强度值最高。
