Surfactants-Effect on hardness of dental stone and investment material - Uniyal, Shashank;S., Anilkumar
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Polyvinylsiloxane (PVS) are increasingly being used in dental laboratories for duplicating casts. A serious problem with the use of PVS material is their low surface energy which renders them difficult to wet with gypsum slurries. Laboratory applied surfactants are effective in reducing the hydrophobic nature of elastomers and increase the probability of obtaining a void free gypsum cast.But their influence on hardness has not been extensively studied. With the above background this study was undertaken to investigate the changes in the surface hardness of a two type of dental stone and an…mehr

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Produktbeschreibung
Polyvinylsiloxane (PVS) are increasingly being used in dental laboratories for duplicating casts. A serious problem with the use of PVS material is their low surface energy which renders them difficult to wet with gypsum slurries. Laboratory applied surfactants are effective in reducing the hydrophobic nature of elastomers and increase the probability of obtaining a void free gypsum cast.But their influence on hardness has not been extensively studied. With the above background this study was undertaken to investigate the changes in the surface hardness of a two type of dental stone and an investment material poured in PVS moulds following the application of two commercially available topical surfactants.
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Autorenporträt
Dr Shashank Uniyal(MDS),completed his graduation from FODS(King George Medical University,Lucknow) with silver medal and PG in Prosthodontics from Govt. Dental College,Kottayam(Kerala, India) securing first class. Dr Anilkumar S(MDS) is Prof. and Head at Dept. of Prosthodontics,GDC,Kottayam.He has more than 20 yr of teaching and clinical experience