| Abstrak/Abstract |
Background: Acrylic resin artificial teeth is easily to have bacterial
adhesion. It is necessary to perform a treatment on that surface, in
order to reduce bacterial adhesion. This study aimed to reveal the
effect of silica coating in acrylic resin artificial teeth on surface
roughness, contact angle measurement, and the growth of
Streptococcus mutans.
Method: The study was conducted on two groups (n=16) of diskshaped acrylic resin artificial teeth with a diameter of 10 mm and
thickness of 2 mm. A 2% silica coating material was obtained by
diluting 2 g silica nanoparticles on 100 ml of ethanol. Surface
roughness, contact angle measurement, and the growth of
Streptococcus mutans was measured using surface roughness
measuring instrument, camera digital, and colony counter. The data
obtained were then analyzed using T-test (p<0.05).
Result: The results showed that the surface roughness and contact
angle measurement in group I (0.29±0.08 μm); (79,49º ± 10,88º) was
higher than group II (0.17±0.05 μm); (34,77º±0,05º). The growth of
Streptococcus mutans in group I was also higher (32.28±3.75 CFU/ml)
than group II (24.83±3.47 CFU/ml).
Conclusion: The study concluded that there is an effect of silica
coating on surface roughness, contact angle measurement, and the
growth of Streptococcus mutans in acrylic resin artificial teeth.
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