Color changes induced by fluoride on nickel-titanium orthodontic wires.
- Author:
Chang-bai MA
1
;
Xin-qiang LIU
;
Jin-hua LI
Author Information
- Publication Type:Journal Article
- MeSH: Dental Alloys; Fluorides; Nickel; Orthodontic Wires; Phosphates; Saliva, Artificial; Sodium Fluoride; Titanium
- From: West China Journal of Stomatology 2009;27(6):645-648
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo observe the color changes of nickel-titanium (Ni-Ti) orthodontic wires induced by fluoride.
METHODSEach 40 samples of 4 kinds of nickel-titanium orthodontic wires (IMD, SL, TP, YY) were put into artificial saliva with sodium fluoride at different F concentrations (0.05%, 0.10%, 0.15%) and artificial saliva, separately. Dislodged the species and immersed them into artificial saliva with sodium fluoride for 3 minutes, then washed them with deionized water, and put back to artificial saliva, this course should be repeated 3 times per day. The whole immersion test lasted for 28 days. The color and micro-morphous changing were observed.
RESULTSThe color changes came to be more serious as the F- concentration growing (P < 0.05). At the same F- concentration, the color changes of IMD and YY were higher than SL and YP (P < 0.01), while there were no significant difference between IMD and YY, SL and TP (P > 0.05).
CONCLUSIONFluoride can change the color of Ni-Ti wire. Different Ni-Ti wires get different changes at the same F- concentration.
