Effect of enamel surface modification by novel aqueous phosphate-type fluoride surfactants.
Three novel aqueous fluoride surfactants (F4, F6, and F8) and a positive control (10F2S-3I) were applied to bovine enamel and the surface free energy was calculated by measuring the surface contact angles of three liquids: distilled water, α-bromonaphthalene and diiodomethane. The specimens were stored in water for 90 days, and then immersed in acetic acid/sodium acetate. The modified specimens recorded higher contact angles and lower surface free energy immediately after treatment than the control (p<0.05). Less calcium dissolved from the modified enamel surfaces than the control, with the F8-modified specimen registering significantly lower values than those of the F4, F6 and 10F2S-3I groups (p<0.05). These results suggest that the novel aqueous phosphate-type fluoride surfactant F8 is the most effective anti-cariogenic surface modifier.
Division of Restorative Dentistry, Department of Oral Medicine, Kanagawa Dental College, Yokosuka, Kanagawa, Japan.
Tomotaro
T
Nihei
Naohiro
N
Omoto
Katsura
K
Ohashi
Yoshiyuki
Y
Kondo
Norio
N
Yoshino
Toshio
T
Teranaka
D000704:Analysis of Variance; D000818:Animals; D002327:Cariostatic Agents / Q000737:chemistry*; D002417:Cattle; D003743:Dental Enamel / Q000737:chemistry*; D005459:Fluorides; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D010710:Phosphates; D013499:Surface Properties; D013501:Surface-Active Agents; D017001:Tooth Demineralization / Q000517:prevention & control
D002327:Cariostatic Agents; D010710:Phosphates; D013501:Surface-Active Agents; D005459:Fluorides