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Effects of chlorhexidine-containing adhesives on the durability of resin–dentine interfaces

Stanislawczuk, Rodrigo ; Pereira, Fabiane ; Muñoz, Miguel Angel ; Luque, Issis ; Farago, Paulo Vitor ; Reis, Alessandra ; Loguercio, Alessandro D

Journal of dentistry, 2014-01, Vol.42 (1), p.39-47 [Periódico revisado por pares]

England: Elsevier Ltd

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Título:
Effects of chlorhexidine-containing adhesives on the durability of resin–dentine interfaces
Autor: Stanislawczuk, Rodrigo ; Pereira, Fabiane ; Muñoz, Miguel Angel ; Luque, Issis ; Farago, Paulo Vitor ; Reis, Alessandra ; Loguercio, Alessandro D
Assuntos: Accumulation ; Acid Etching, Dental - methods ; Adhesives ; Adhesives systems ; Adolescent ; Adult ; Aqueous solutions ; Bond strength ; Bonding ; Bonding strength ; Chlorhexidine ; Chlorhexidine - chemistry ; Collagen ; Composite Resins - chemistry ; Dental Bonding ; Dental Leakage - classification ; Dental Materials - chemistry ; Dentin - ultrastructure ; Dentin-Bonding Agents - chemistry ; Dentistry ; Direct current ; Durability ; Enamel ; Etching ; Humans ; Long-term ; Materials Testing ; Mechanical properties ; Methacrylates - chemistry ; Microscopy, Electron, Scanning ; Microtensile bond strength ; Nanoleakege ; Nanostructure ; Polymerization ; Polyurethanes - chemistry ; Reduction ; Solubility ; Stress, Mechanical ; Studies ; Surface Properties ; Surface-Active Agents - chemistry ; Teeth ; Tensile Strength ; Time Factors ; Water - chemistry ; Young Adult
É parte de: Journal of dentistry, 2014-01, Vol.42 (1), p.39-47
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Descrição: Abstract Objectives This study evaluated the effect of addition of diacetate CHX in different concentrations into two simplified etch-and-rinse (ER) adhesive systems (XP Bond [XP] and Ambar {AM}) on the ultimate tensile strength (UTS), degree of conversion (DC), 60-day cumulative water sorption (WS), solubility (SO) and CHX release (CR) as well as the immediate (IM) and 1-year (1Y) resin–dentine bond strength (μTBS) and nanoleakage (NL). Methods Ten experimental adhesive systems were formulated according to the addition of CHX diacetate (0 [control], 0.01, 0.05, 0.1 and 0.2%) in the two ER. For UTS and DC, specimens were constructed and tested after 24 h. For WS, SO and CR, after specimens build-up, they were stored in water and the properties measured after 60 days. The occlusal enamel of fifty molars was removed and the adhesives were applied in dentine surface after 37% phosphoric acid etching. After composite resin build-ups, specimens were longitudinally sectioned to obtain resin–dentine bonded sticks (0.8 mm2 ). Specimens were tested in tension at 0.5 mm/min in the IM or 1Y. For NL, 2 bonded sticks from each tooth were prepared and analyzed under SEM. The data were submitted to appropriate statistical analysis (α = 0.05). Results The addition of CHX did not influence UTS, DC, WS and SO ( p < 0.05). Higher CR was observed in adhesives with higher concentration of CHX ( p < 0.05). After 1Y, significant reductions of μTBS and increases of NL were observed in the control groups ( p < 0.05). Reductions of μTBS and increase of NL over time were not observed (AM) for CHX-containing adhesives or it was less pronounced than the control (XP) regardless of the CHX concentration. Conclusions The addition of CHX diacetate in concentrations until 0.2% in the simplified ER adhesive systems may be an alternative to increase the long-term stability of resin–dentine interfaces, without jeopardizing the adhesives’ mechanical properties evaluated.
Editor: England: Elsevier Ltd
Idioma: Inglês;Persa

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Effects of chlorhexidine-containing adhesives on the durability of resin–dentine interfaces

Stanislawczuk, Rodrigo ; Pereira, Fabiane ; Muñoz, Miguel Angel ; Luque, Issis ; Farago, Paulo Vitor ; Reis, Alessandra ; Loguercio, Alessandro D

England: Elsevier Ltd

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