2002 Volume 65 Issue 2 Pages 181-188
Light-cured resin is often used in clinical orthodontics for bracket bonding. It is advantageous if this material releases fluoride to prevent dental caries during orthodontic treatment. We used Testskin (Toyobo, Osaka, Japan), which is a living skin equivalent, to examine the influence on cytotoxicity caused by differences in fluoride densities and light-curing conditions on fluoride-releasing resin.
We observed an increase in cytotoxicity in relation to increased amounts (0〜3.0%) of added NaF when using Kurasper F F-bond. This is thought to result from fluoride release and the effect of increased amounts of NaF on the permeability of the light into the resin. When applying irradiation with a plasma arc lamp for only 3-6 seconds, Kurasper F F-bond and Light Bond Sealant and Fuji Orth LC realized strong cytotoxicity, indicating that irradiation of at least 9 seconds is more desirable. Although fluoride releasing in orthodontic bonding resins is advantageous, cytotoxicity is a factor that must be considered.
Shika Igaku (J Osaka Odontol Soc) 2002 Jun; 65(2): 181-188.
