The effect of disinfection procedure and storage on wettability of hydrophilized condensation silicone impression materials
DOI:
https://doi.org/10.32828/mdj.v13i1.791Keywords:
wettability, impression material, surfactant, disinfection, hydrophilicityAbstract
Background: a newly developed hydrophilized condensation silicone impression
material claimed to be hydrophilic, but exposure to disinfection procedure and
storage could alter the wettability of impression material. Thus, the aim of
present study was to evaluate the effect of impression disinfection by immersion
in 0.5% NaOCl for 10 mints. on wettability of hydrophilized condensation
silicon . In addition, effect of storage after disinfection for two hours, measured
by contact angle of dental stone mix with impression surface.
Materials and Methods: Hydrophilized condensation silicone (putty and wash type)
tested with type III dental stone and 0.5% sodium hypochlorite disinfectant
solution were used in this study. Disinfection procedure by immersion for 10
mint. Wettability was evaluated in simulation of regular clinical situation pouring
2ml. of stone slurry on impression surface to form stone patty. Each patty
sectioned into two halves, scanned with flat bed scanner and images printed.
Dental stone mix contact angle with impression surface was measured with
protractor from scanned image of the cross section of stone patty. Measurements
were preformed before and after disinfection procedure, also after storage in
humid environment for two hours.
Results: The putty type showed significant difference p<0.001 when subjected to
disinfection and storage. The wash type showed no significant difference p>0.05
when subjected to disinfection or storage. Both types together they were not
affected by disinfection procedure p>0.05, but storage had significant effect
p<0.001 on wettability.
Conclusions: For the hydrophilized condensation silicone using both types together
(putty + wash) for making impression improve wettability even after
disinfection. Delay pouring impression for two hours cause deterioration of
impression wettability.
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