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Effect of chlorhexidine on the bond strength of a self-etch adhesive system to sound and demineralized dentin
Brazilian Oral Research; de-Melo, Mary Anne Sampaio; Goes, Diego da Costa; de-Moraes, Maria Denise Rodrigues; Santiago, Sérgio Lima; Rodrigues, Lidiany Karla Azevedo.
Affiliation
  • de-Melo, Mary Anne Sampaio; Univ Federal do Ceará - UFC. Faculty of Pharmacy,Dentistry and Nursing. Fortaleza. BR
  • Goes, Diego da Costa; Univ Federal do Ceará - UFC. Faculty of Pharmacy,Dentistry and Nursing. Fortaleza. BR
  • de-Moraes, Maria Denise Rodrigues; Univ Federal do Ceará - UFC. Faculty of Pharmacy,Dentistry and Nursing. Fortaleza. BR
  • Santiago, Sérgio Lima; Univ Federal do Ceará - UFC. Faculty of Pharmacy,Dentistry and Nursing. Fortaleza. BR
  • Rodrigues, Lidiany Karla Azevedo; Univ Federal do Ceará - UFC. Faculty of Pharmacy,Dentistry and Nursing. Fortaleza. BR
Braz. oral res ; 27(3): 218-224, May-Jun/2013. tab, graf
Article in En | LILACS | ID: lil-673241
Responsible library: BR1.1
ABSTRACT
This study evaluated the effect of a 2% chlorhexidine-based disinfectant (CHX) on the short-term resin-dentin bond strength of a self-etch adhesive system to human dentin with different mineral contents. Dentinal mineralization was tested at 4 levels (sound, and after 2, 4, or 8 days of demineralization-remineralization cycles) and disinfectant at 2 levels [deionized water (DW, negative control) and CHX]. Dentin demineralization induced by pH-cycling was characterized by cross-sectional hardness (CSH). Each dentin surface was divided into halves, one treated with DW and the other with CHX (5 minutes). Each surface was bonded with a self-etch adhesive system and restored. The specimens were sectioned and subjected to microtensile bond testing. CSH and microtensile bond strength (µTBS) data were analyzed by regression analysis and ANOVA-Tukey tests (α = 5%), respectively. The groups treated with CHX resulted in mean µTBS similar to those found for the groups in which the dentin was exposed to DW (p = 0.821). However, mean µTBS were strongly influenced by dentin mineralization (p < 0.05) the bond strength found for sound dentin was lower than that found for dentin cycled for 8 days, which was even lower than the bond strengths for dentin cycled for 2 or 4 days. The results suggest that the degree of dentin demineralization affects the bond strength of self-etching adhesives, but the use of CHX does not modify this effect.
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Full text: 1 Index: LILACS Main subject: Chlorhexidine / Dental Bonding / Dentin / Dentin Desensitizing Agents Type of study: Evaluation_studies Limits: Humans Language: En Journal: Braz. oral res Journal subject: ODONTOLOGIA Year: 2013 Type: Article / Project document

Full text: 1 Index: LILACS Main subject: Chlorhexidine / Dental Bonding / Dentin / Dentin Desensitizing Agents Type of study: Evaluation_studies Limits: Humans Language: En Journal: Braz. oral res Journal subject: ODONTOLOGIA Year: 2013 Type: Article / Project document