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Type: Artigo de periódico
Title: Effects Of Additional And Extended Acid Etching On Bonding To Caries-affected Dentine.
Author: Arrais, César Augusto Galvão
Giannini, Marcelo
Nakajima, Masatoshi
Tagami, Junji
Abstract: This study evaluated the effects of additional and extended acid etching on microtensile bond strength ( micro TBS) of two adhesive systems to sound (SD) and caries-affected dentine (CAD). Flat surfaces of CAD surrounded by SD of 36 extracted carious third molars were assigned to four treatments (i): self-etching adhesive system (Clearfil SE Bond) applied to dentine surfaces following manufacturer's instructions (MI); (ii) after additional etching for 15 s (35% phosphoric acid, PA); (iii) total-etch one-bottle adhesive (Single Bond) applied to dentine surfaces following MI; or (iv), after etching for 45 s with PA. Composite 'blocks' were built on bonded surfaces and restored teeth were vertically sectioned to obtain bonded slices of 0.7 mm thick. Slices were trimmed to create hourglass-shaped specimens (cross-sectional area of 1 mm(2)), which were tested under tension in a universal testing machine. Additional CAD and SD samples were prepared for scanning electron microscopy observations. Additional and extended etching significantly increased micro TBS to CAD; however, micro TBS of both adhesives to CAD were significantly lower than to SD. Additional and extended etching can improve bonding to CAD; however, adhesives applied on SD showed the best results for bonding.
Subject: Acid Etching, Dental
Bisphenol A-glycidyl Methacrylate
Composite Resins
Dental Bonding
Dental Caries
Dentin-bonding Agents
Materials Testing
Microscopy, Electron, Scanning
Phosphoric Acids
Resin Cements
Surface Properties
Tensile Strength
Time Factors
Citation: European Journal Of Oral Sciences. v. 112, n. 5, p. 458-64, 2004-Oct.
Rights: fechado
Identifier DOI: 10.1111/j.1600-0722.2004.00159.x
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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