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Lookup NU author(s): Professor John McCabe
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Soft denture liners are used for edentulous patients to cushion functional forces, We hypothesized that the application of soft liners having viscoelastic properties would lead to the most marked improvement in masticatory function. The shear storage modulus (G'), shear loss modulus (G"), and loss tangent (tan delta) were determined for 6 materials by means of a dynamic visco-elastometer. Masticatory function of ton subjects was evaluated by measurements of maximum bite forces and chewing times and frequencies for 2 food samples, and by the use of visual analogue scales. The acrylic materials exhibited viscoelastic behavior, while the silicones exhibited elastic behavior. The improvement in masticatory function compared with hard resin was found to be in the order: acrylic permanent materials > silicone > acrylic temporary materials. The results suggest that the use of materials with higher tan delta and G' provides the most optimum masticatory function for patients requiring the provision of soft liners on their dentures.
Author(s): McCabe JF; Murata H; Taguchi N; Hamada T; Kawamura M
Publication type: Article
Publication status: Published
Journal: Journal of Dental Research
Year: 2002
Volume: 81
Issue: 2
Pages: 123-128
ISSN (print): 0022-0345
ISSN (electronic): 1544-0591
Publisher: Sage Publications, Inc.
URL: http://dx.doi.org/10.1177/154405910208100208
DOI: 10.1177/154405910208100208
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