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Influence of dietary simulating solvents on the viscoelasticity of temporary soft lining materials

Lookup NU author(s): Dr Nick Jepson, Professor John McCabe

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Abstract

Statement Of Problem. Clinical changes in the viscoelasticity of temporary soft lining materials are characterized by a more rapid and increased reduction in compliance than is seen after in vitro immersion. A possible explanation for these differences is a solvent effect, acting clinically to encourage the loss of ethanol and plasticizer. Dietary solvents have been suggested as likely agents. Purpose. This study examined the effect of immersion in dietary simulating solvents on the viscoelasticity of temporary soft lining materials, with a view to formulating more clinically relevant immersion regimes used in the evaluation of these materials. Material And Methods. Four temporary soft lining materials were immersed in distilled water and solutions chosen to simulate dietary solvents. Changes in viscoelasticity over time were recorded with a penetrometer, modified to record creep strain and strain during recovery. Results. All immersion solutions caused a significant reduction in compliance values of each material over time (P <.05). However, only heptane and corn oil immersants produced the rapid and increased reduction in compliance that is evident clinically. Changes in elastic recovery were less pronounced. Conclusion. Results of this study offer support to a dietary source of solvent acting to effect clinical changes in the viscoelasticity of temporary soft lining materials. (J Prosthet Dent 2000;83:25-31.). © 2000 Editorial Council of The Journal of Prosthetic Dentistry.

Publication metadata

Author(s): Jepson N; McCabe J; McGill J

Publication type: Article

Publication status: Published

Journal: Journal of Prosthetic Dentistry

Year: 2000

Volume: 83

Issue: 1

Pages: 25-31

Print publication date: 01/01/2000

ISSN (print): 0022-3913

ISSN (electronic): 1097-6841

Publisher: Mosby, Inc.

URL: http://dx.doi.org/10.1016/S0022-3913(00)70085-0

DOI: 10.1016/S0022-3913(00)70085-0

PubMed id: 10633019

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