Influence of various fluoridated toothpastes and trial manufacture fluorine-free toothpaste on titanium surface roughness.

DOI 1 Citations 14 References Open Access
  • Gomi Yukiko
    Tsurumi University, School of Dental Medicine, Department of Periodontology
  • Nagasaki Mariko
    Tsurumi University, School of Dental Medicine, Department of Periodontology
  • Misawa Eri
    Tsurumi University, School of Dental Medicine, Department of Periodontology
  • Kajiyama Sotaro
    Tsurumi University, School of Dental Medicine, Department of Periodontology
  • Saito Mari
    Tsurumi University, School of Dental Medicine, Department of Periodontology
  • Nagano Takatoshi
    Tsurumi University, School of Dental Medicine, Department of Periodontology
  • Inoue Kohji
    Tsurumi University, School of Dental Medicine, Research Center of Electron Microscopy
  • Gomi Kazuhiro
    Tsurumi University, School of Dental Medicine, Department of Periodontology

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  • 各種フッ素含有歯磨剤および試作フッ素未含有歯磨剤のチタン表面粗さに与える影響

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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 degree of corrosion than titanium alloy. In contrast, no corrosion of the titanium surface was found following exposure to the trial-manufactured fluorine-free toothpaste and mouth rinse. Based on these results, it was concluded that the trial-manufactured fluorine-free toothpaste and mouth rinse were safer for patients with titanium implants in the oral cavity. Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 56(1)：49-56, 2014.

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