The role of nicotine, cotinine and caffeine on the electrochemical behavior and bacterial colonization to cp-Ti
Valentim A. R. Barao, Antonio P. Ricomini-Filho, Leonardo P. Faverani, Altair A. Del Bel Cury, Cortino Sukotjo, Douglas R. Monteiro, Judy Chia-Chun Yuan, Mathew T. Mathew, Regiane C. do Amaral, Marcelo E. Mesquita, Wander J. da Silva, Wirley G. Assuncao
ARTIGO
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Although smoking promotes deleterious effect to bone healing, there is a lack of study investigating its role on the implant structure and biofilm growth. We hypothesized that nicotine, cotinine and caffeine would impair the corrosion resistance of commercially-pure titanium (cp-Ti) and would...
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Although smoking promotes deleterious effect to bone healing, there is a lack of study investigating its role on the implant structure and biofilm growth. We hypothesized that nicotine, cotinine and caffeine would impair the corrosion resistance of commercially-pure titanium (cp-Ti) and would enhance Streptococcus sanguinis biofilm growth. Neither the smoking products nor the caffeine affected the corrosion tendency (P>.05) and the oxide layer resistance (P=.762) of cp-Ti. Lower capacitance values were noted in the presence of nicotine (P=.001) and cotinine (P=.0006). SEM showed no pitting corrosion, and the EDS spectra did not differ among groups. Nicotine (300 mu g/mL) induced higher surface roughness (P=.03) and greater surface change of cp-Ti. Nicotine at 3 mu g/ml, and cotinine at 03 and 3 mu g/mL increased the number of viable cells (P<.05). Biofilm exposed to nicotine (03,3 and 30 mu g/mL) (P=.025, .030, .040, respectively) and cotinine (3 and 30 mu g/mL) (P=.027, .049, respectively) enhanced carbohydrate content. Biofilm biomass and protein content were similar among groups (P>.05). These findings suggest a greater biofilm accumulation in smokers, a risk factor that may lead to peri-implantitis
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2011/20017-0; 2011/20021-7
Fechado
The role of nicotine, cotinine and caffeine on the electrochemical behavior and bacterial colonization to cp-Ti
Valentim A. R. Barao, Antonio P. Ricomini-Filho, Leonardo P. Faverani, Altair A. Del Bel Cury, Cortino Sukotjo, Douglas R. Monteiro, Judy Chia-Chun Yuan, Mathew T. Mathew, Regiane C. do Amaral, Marcelo E. Mesquita, Wander J. da Silva, Wirley G. Assuncao
The role of nicotine, cotinine and caffeine on the electrochemical behavior and bacterial colonization to cp-Ti
Valentim A. R. Barao, Antonio P. Ricomini-Filho, Leonardo P. Faverani, Altair A. Del Bel Cury, Cortino Sukotjo, Douglas R. Monteiro, Judy Chia-Chun Yuan, Mathew T. Mathew, Regiane C. do Amaral, Marcelo E. Mesquita, Wander J. da Silva, Wirley G. Assuncao
Fontes
Materials science and engineering C: materials for biological applications (Fonte avulsa) |