The influence of immersion solutions on the viscoelasticity of temporary soft lining materials

Dental Materials : Official Publication of the Academy of Dental Materials
H MurataT Hamada

Abstract

The purpose of this study was to examine the influence of laboratory immersion in a number of solvents on the viscoelasticity of temporary soft lining materials. It was an initial attempt to reproduce the changes seen clinically with a view to formulating more clinically relevant immersion regimes for the evaluation of these materials. Changes in the viscoelasticity of four temporary soft lining materials following immersion at 37 + or - 1 degree C in 10% acetone/90% water, 20A% acetone/80% water and hexane was compared to a control immersion in distilled water using a penetrometer modified to record creep strain and strain during recovery. Testing was performed at 2 h and 24 h and then at 2, 4, 7, 21 and 28 d after sample preparation. Summary measures were used to describe individual specimen changes in derived values of initial and time dependent compliance and elastic recovery from 0-7, 7-28 and 0-28 d. Immersion in hexane resulted in at least a 50% reduction in compliance of 28 d. There was a significantly greater reduction in compliance for hexane immersion than for any other solvent (p<0.01). Immersion in 20% acetone resulted in an increase in compliance of around 1 mm/N after 1 wk compared with a reduction of up to 1 mm/...Continue Reading

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Citations

Jul 12, 2005·Journal of Dentistry·N TanakaM Fujitani
Jun 5, 1998·Journal of Dentistry·R StrangD Woods
Aug 12, 1998·Journal of Dentistry·J F McCabe
Feb 21, 2002·The Journal of Prosthetic Dentistry·Hans S MalmströmMark E Moss
Nov 26, 2002·The Journal of Prosthetic Dentistry·Hiroshi MurataTaizo Hamada
Jun 11, 2008·Dental Materials Journal·Guan HongHiroshi Murata
Jun 26, 2014·PloS One·Michele BailNara Hellen Campanha
Jan 17, 2014·Journal of Indian Prosthodontic Society·Shobha RodriguesThilak Shetty
Mar 22, 2008·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Francis K ManteVicki C Petropolous
Jun 16, 2012·Gerodontology·Guang HongKeiichi Sasaki
Feb 3, 2011·Gerodontology·Lidia Yileng TayJanaina Habib Jorge
Jul 24, 2013·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Michele BailNara Hellen Campanha
Mar 26, 2005·Journal of Dental Research·H MurataJ F McCabe

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