Cross-linked dry bonding: A new etch-and-rinse technique.

Autor: Zhou J; Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, PR China., Chiba A; Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan., Scheffel DL; Department of Orthodontics and Pediatric Dentistry, Universidade Estadual Paulista-UNESP, Araraquara Dental School, Araraquara, Sao Paulo, Brazil., Hebling J; Department of Orthodontics and Pediatric Dentistry, Universidade Estadual Paulista-UNESP, Araraquara Dental School, Araraquara, Sao Paulo, Brazil., Agee K; Department of Oral Biology, The Dental College of Georgia, Augusta University, Augusta, GA, USA., Tagami J; Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan., Tan J; Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, PR China., Abuelenain D; Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia., Nawareg MA; Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia., Hassan AH; Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia., Breschi L; Department of Biomedical and Neuromotor Sciences DIBINEM, University of Bologna and IGM-CNR Unit of Bologna, Bologna, Italy., Tay FR; Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA., Pashley DH; Department of Oral Biology, The Dental College of Georgia, Augusta University, Augusta, GA, USA. Electronic address: DPASHLEY@gru.edu.
Jazyk: angličtina
Zdroj: Dental materials : official publication of the Academy of Dental Materials [Dent Mater] 2016 Sep; Vol. 32 (9), pp. 1124-32. Date of Electronic Publication: 2016 Jul 16.
DOI: 10.1016/j.dental.2016.06.014
Abstrakt: Objective: To determine if acid-etched, cross-linked dentin can be dehydrated without lowering bond strength below that of cross-linked wet-bonded dentin in vitro.
Methods: Using extracted human third molars, control acid-etched dentin was bonded with Single Bond Plus, using either the wet- or dry-bonding technique. Experimental acid-etched dentin was treated with 5mass% grape seed extract (GSE) in different solvents for 1min before undergoing wet vs dry resin-dentin bonding with Single Bond Plus. Completely demineralized dentin beams were treated with 5% GSE for 0, 1 or 10min, before measuring stiffness by 3-point flexure. Other completely demineralized beams were treated similarly and then incubated in buffer for 1 week to measure the collagen solubilization by endogenous dentin proteases.
Results: 24h microtensile bond strengths (μTBS) in wet and dry controls were 53.5±3.6 and 9.4±1.8MPa, respectively (p<0.05). 5% GSE in water gave μTBS of 53.7±3.4 and 39.1±9.7MPa (p<0.05), respectively, while 5% GSE in ethanol gave μTBS of 51.2±2.3 and 35.3±2.0MPa (p<0.05). 5% GSE in 5% EtOH/95% water gave wet and dry μTBS of 53.0±2.3 and 55.7±5.1MPa (p>0.05). Cross-linking demineralized dentin with 5% GSE increased stiffness of dentin and decreased collagen degradation (p<0.05).
Significance: 5% GSE pretreatment of acid-etched dentin for 1min permits the dentin to be completely air-dried without lowering bond strength.
(Copyright © 2016 The Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: