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In Vitro Comparative Study of Dimensional Stability of Three Different Polyvinyl Siloxane Interocclusal Recording Matereials after Storage for Different Time Intervals of 12 Hours, 24 Hours, and 48 Hours
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Background: Interocclusal recording materials are generally used in prosthetic dentistry to register the jaw relationship. These materials have a wide range of viscosity, elasticity, and volumetric changes within various material groups. Newer elastomeric interocclusal materials are chemical modifications of elastomers whose comparative properties relevant to clinicians are yet to be studied.
Aims: To compare the dimensional change between the polyvinylsiloxane bite registration materials manufactured by different brands within the duration of 12 hours, 24 hours, and 48 hours storage.
Methodology: The dimensional changes of the different polyvinylsiloxe bite registration pastes were compared three-dimensionally in different time intervals with the standardised die measurement was 25mm between the vertical lines.
Conclusion: Within the limitations of the study, it was found that all 3 interocclusal recording materials NEOSILK, CADBITE, AND O-BITE showed no significant distortion when stored in-vitro for 12 hours. All Materials showed significant distortion when stored in-vitro for 24 hours and 48 hours. All three materials showed more distortion when stored in 48hours compare to 24 hours. Among polyvinyl siloxane interocclusal recording materials NEOSILK showed better dimensional stability when compared with CADBITE and O-BITE when stored in-vitro 24hours and 48hours. Hence we recommend Neosilk bite material for better dimensional stability when compare with other materials.
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