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In order to evaluate the effects of various finishing devices (Sof-Lex disc, diamond point, rubber point, fussure bur) on the surface roughness or two composite resins (Restodent, Enamelite 500), 15 specimens for each composite resin were made in the mold.
Composite resin was prepared on the mixing pad by manufacturer's direction and filled in the mold cavity. A sheet of matrix is immediately placed on it and hold for 5 minutes to polymerize the resin. Surface finish was done after 10 minutes from the start of mixing.
Scanning electron microscopy and surface profilometer were used to evaluate the surface roughness, porositites and striations of dental composite resins.
The following results were observed;
1. The best finished surface was formed by celluloid matrix band.
2. Rubber point was excellent polishing device for Restodent.
3. Sof-Lex disc was the device of choice for polishing Enamelite 500.
4. Different polishing methods were effective for different composite resins.
5. SEMs of variously finished surfaces supported the profilometer measurements. |
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