不同浓度 10-MDP 和 GPDM 对氧化锆结合的影响。

Interaction of different concentrations of 10-MDP and GPDM on the zirconia bonding.

机构信息

Dental Research Division, Paulista University, Rua Doutor Bacelar, 1212, 04026-002 Sao Paulo, Brazil.

出版信息

Dent Mater. 2023 Jul;39(7):665-668. doi: 10.1016/j.dental.2023.05.003. Epub 2023 May 22.

DOI:10.1016/j.dental.2023.05.003

PMID:37225538

Abstract

OBJECTIVES

To analyze the influence of different concentrations of 10-MDP and GPDM used, combined or not, on the bonding to zirconia.

METHODS

Specimens of zirconia and a resin-composite (7 mm length, 1 mm width, and 1 mm thick) were obtained. The experimental groups were obtained according to the functional monomer (10-MDP and GPDM) and the concentrations (3 %, 5 %, and 8 %). For the groups with combined 10-MDP and GPDM, the agents were used with a proportion of 50 %/50 % wt until reaching the 3 %, 5 % and 8 % concentrations. All monomers were diluted in ethanol to obtain the primers. Two control groups were established: ethanol (negative control) and a commercial reference Monobond N (positive control). The zirconia surface treatment was performed with the primer application followed by the bonding to a resin-composite sample with a light-curing resin cement. Twenty-four hours after the adhesive procedure, a microtensile test was performed and the failure pattern of each sample was analysed with a stereoscopic magnifying glass. Data were analysed by a two-way ANOVA and Dunnet test.

RESULTS

All experimental primers presented a higher bond strength than the negative control (ethanol). Excepting the 8 % GPDM primer, all groups presented statistically similar bond strength compared to the positive control, with a predominance of adhesive failure.

SIGNIFICANCE

10-MDP, GPDM, and the combination of both for the concentrations tested promote an effective chemical bonding to zirconia. However, using 10-MDP and GPDM in the same primer has no synergistic effect.

摘要

目的

分析不同浓度的 10-MDP 和 GPDM（单独或联合使用）对氧化锆粘结性能的影响。

方法

制备氧化锆样本和树脂复合材料（7mm 长、1mm 宽、1mm 厚）。根据功能单体（10-MDP 和 GPDM）和浓度（3%、5%和 8%）设置实验组。对于联合使用 10-MDP 和 GPDM 的组，将两种试剂按 50%/50%wt 的比例使用，直到达到 3%、5%和 8%的浓度。所有单体均用乙醇稀释制成底漆。设立两个对照组：乙醇（阴性对照）和商用参考单体 Monobond N（阳性对照）。用底漆处理氧化锆表面，然后用光固化树脂水泥将树脂复合材料样品粘结在上面。粘结程序 24 小时后，进行微拉伸试验，并通过立体放大镜分析每个样本的失效模式。采用双因素方差分析和 Dunnett 检验对数据进行分析。