Yuki Gomi, M. Nagasaki, Erik T. Misawa
2014
Citations
0
Influential Citations
2
Citations
Quality indicators
Journal
Nihon Shishubyo Gakkai Kaishi (journal of The Japanese Society of Periodontology)
Abstract
Dental implant treatments are widely performed, with an increasing number of patients with titanium implants. However, it has been reported that titanium corrodes in the presence of fluorine ions. Furthermore, titanium corrodes even more quickly when the pH level in the mouth is lowered by intake of certain foods and by plaque deposition. Fluoride is added to most commercial toothpastes for the purpose of prevention of caries. Therefore, in this study, we evaluated the effects of a fluorine-free toothpaste and mouth rinse for exclusive use by patients with titanium implants, which we thought could be used safely over the long term. We examined the effect of the trial-manufactured fluorine-free toothpaste and mouth rinse on the corrosion and surface roughness of pure titanium and titanium alloy by confocal laser scanning microscopy and scanning electron microscopy. Our findings revealed marked corrosion of the titanium in following exposure to the fluorine liniment, which contained fluorine at concentrations more than 9000 ppm. Significant roughness of the titanium surface as compared to the control was observed when the specimens were soaked in fluoridated toothpaste containing fluoride at 1000 ppm or less for three days. Furthermore, when fluorine was present in an acidic environment, the corrosive damage on the titanium surface was even greater. Pure titanium showed a greater 49