Assessment four types of separating medium on surface roughness of self cure acrylic resin processed by two methods

	Assessment four types of separating medium on surface roughness of self cure acrylic resin processed by two methods "A comparative study"
journal of kerbala university
Article 1, Volume 8, Issue 0, 2012, Pages 33-44 PDF (0 K)
Abstract
Surface roughness is known to be factor in the entrapment of microorganisms on acrylic surface, significantly higher number of microorganisms cells were observed on roughened surface than on smooth surface. In present study olive oil, and glycerin oil are used as a substitute for tin foil & cold mold seal (alginate mold seal) in the process of curing clear cold cure acrylic resin against stone and evaluating these new materials as a separating medium on surface roughness of cold cure acrylic resin cured in air(bench curing ), and in water(ivomat curing). A total of (64) specimens from clear cold cure acrylic resin were prepared for surface roughness test and divided into two major groups ,each major group subdivided into four subgroup according to the type of separating medium that used during processing .The major group one include (group A, group B, group C,& group D) ,the major group two include( group A1,group B1,group C1,&group D1) .From the result obtained, in bench curing groups, statistically significant differences in mean surface roughness value was observed of tin foil group compared with cold mold seal group ,from the other hand non significant differences between cold mold seal with olive oil group& glycerin oil groups ,also non significant differences between tin foil group with olive oil and glycerin oil groups ,but in ivomat curing groups , statistically significant differences between tin-foil group compared with cold mold seal group & olive oil group ,and highly significant difference between tin-foil group with glycerin group ,from the other hand non significant differences among cold mold seal group ,olive oil group and glycerin oil group.

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Assessment four types of separating medium on surface roughness of self cure acrylic resin processed by two methods "A comparative study"