title: Influence of an arginine-containing toothpaste on bond strength of different adhesive systems to eroded dentin.
abstract: The aim of this study was to evaluate the bond strength of different adhesive systems to eroded dentin following toothbrushing with an arginine-containing toothpaste. Sixty standardized 3 × 3 × 2-mm fragments of root dentin (n = 10) were prepared. After all surfaces except the buccal surfaces were impermeabilized, specimens were subjected to an erosive wear protocol and stored for 24 hours at 37°C. The specimens underwent 1000 toothbrushing cycles with an arginine-containing toothpaste, an arginine-free toothpaste (positive control group), or artificial saliva (negative control group). Following application of a self-etching or an etch-and-rinse adhesive to the buccal surfaces of the specimens, 6-mm-high composite resin blocks were built up in 2-mm increments. After 24 hours' storage in 100% relative humidity, microtensile test specimens with an approximate area of 1 mm² were prepared. The test was performed at a speed of 0.5 mm/min until specimen fracture, and the failure patterns were evaluated using a stereoscopic loupe. Two-way analysis of variance revealed no significant difference between the toothpastes, the adhesive systems, or the interactions between toothpaste and adhesive system in terms of the bond strength to eroded dentin (P > 0.05). The predominant failure pattern was adhesive in all groups. It was concluded that a toothpaste containing arginine did not interfere with the bond between either the self-etching or the etch-and-rinse adhesive system and eroded dentin.
authors.forename: Ana Cláudia Pietrobom
authors.initials: AC
authors.lastname: Bergamin
authors.forename: Enrico Coser
authors.initials: EC
authors.lastname: Bridi
authors.forename: Flávia Lucisano Botelho
authors.initials: FL
authors.lastname: Amaral
authors.forename: Cecília Pedroso
authors.initials: CP
authors.lastname: Turssi
authors.forename: Roberta Tarkany
authors.initials: RT
authors.lastname: Basting
authors.forename: Flávio Henrique Baggio
authors.initials: FH
authors.lastname: Aguiar
authors.forename: Fabiana Mantovani Gomes
authors.initials: FM
authors.lastname: França
mesh_terms: D001120:Arginine / Q000009:adverse effects* / Q000627:therapeutic use; D001840:Dental Bonding; D003738:Dental Cements / Q000627:therapeutic use*; D003799:Dental Stress Analysis; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure; D006801:Humans; D008855:Microscopy, Electron, Scanning; D013718:Tensile Strength; D014077:Tooth Erosion / Q000628:therapy*; D014099:Toothbrushing / Q000009:adverse effects; D014100:Toothpastes / Q000009:adverse effects* / Q000627:therapeutic use
chemical_list: D003738:Dental Cements; D014100:Toothpastes; D001120:Arginine
keywords: arginine; eroded dentin; microtensile bond strength