Bonding interface and dentin enzymatic activity of two universal adhesives applied following different etching approaches

被引:27
作者
Sebold, Maicon [1 ]
Giannini, Marcelo [1 ]
Andre, Carolina Bosso [2 ]
Sahadi, Beatriz Ometto [1 ]
Maravic, Tatjana [3 ]
Josic, Uros [3 ]
Mazzoni, Annalisa [3 ]
Breschi, Lorenzo [3 ]
机构
[1] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, Operat Dent Div, Ave Limeira 901, BR-13414903 Piracicaba, SP, Brazil
[2] Univ Fed Minas Gerais, Sch Dent, Dept Restorat Dent, Operat Dent Div, Ave Presidente Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG, Brazil
[3] Univ Bologna, Dept Biomed & Neuromotor Sci DIBINEM, Alma Mater Studiorum, Via San Vitale 59, I-40125 Bologna, BO, Italy
关键词
Ferric chloride; Nitric acid; Matrix metalloproteinase inhibitors; Dentin-bonding agents; Dental etching; DEMINERALIZED DENTIN; RINSE ADHESIVES; STRENGTH; MATRIX; ACID; PERFORMANCE; STABILITY; WET; MMPS; MONOMERS;
D O I
10.1016/j.dental.2022.03.001
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Objectives: Etching approaches [37% phosphoric acid, self-etching, 10-3 solution (3% ferric chloride dissolved in 10% citric acid), or 1.4% nitric acid] were evaluated regarding enamel shear bond strength (24 h), dentin microtensile bond strength (24 h and 2 years), failure mode, enzymatic activity of the hybrid layer, and nanoleakage (24 h and 2 years) of Prime& Bond Universal (PBU, Dentsply-Sirona) and Gluma Bond Universal (GBU, Kulzer).Methods: Adhesives were applied on blot-dried (wet-bonding, positive control) or air-dried (remaining groups) dentin after acid-etching (15 s) or in self-etch mode. Enamel and dentin bond strength tests used 160 human teeth (n = 10). Failure mode of tested samples and nanoleakage within the dentin-adhesive interface (n = 5) were analyzed by scanning electron microscopy. Dentin enzymatic activity was investigated by in situ zymo-graphy (n = 3).Results: Enamel bond strengths did not differ statistically among groups. Wet-bonding with 37% phosphoric acid showed similar dentin bond strength compared to 10-3 solution or 1.4% nitric acid at 24 h for both adhesives. None of the etchants inhibited enzymatic ac-tivity, and all groups showed dentin bond strength reduction after 2-year storage. GBU showed higher nanoleakage. Experimental etchants did not affect enamel bond strength. Dentin bond strength was not stable after 2 years, despite promising 24-hour results.Significance: This study suggests multiple etching approaches to optimize and achieve stable dentin bonding, while also offering in-depth information about the performance of recently released universal adhesive systems.(c) 2022 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved.
引用
收藏
页码:907 / 923
页数:17
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