TY - JOUR
T1 - Dynamic viscoelasticity of soft liners and masticatory function
AU - Murata, H.
AU - Taguchi, N.
AU - Hamada, T.
AU - Kawamura, M.
AU - McCabe, J. F.
PY - 2002/2
Y1 - 2002/2
N2 - 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 δ) were determined for 6 materials by means of a dynamic viscoelastometer. Masticatory function of ten 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 δ and G' provides the most optimum masticatory function for patients requiring the provision of soft liners on their dentures.
AB - 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 δ) were determined for 6 materials by means of a dynamic viscoelastometer. Masticatory function of ten 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 δ and G' provides the most optimum masticatory function for patients requiring the provision of soft liners on their dentures.
KW - Dynamic viscoelastic properties
KW - Masticatory function
KW - Soft denture liners
KW - Visual analogue scales
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U2 - 10.1177/0810123
DO - 10.1177/0810123
M3 - Article
C2 - 11827257
AN - SCOPUS:0036483521
VL - 81
SP - 123
EP - 128
JO - Journal of Dental Research
JF - Journal of Dental Research
SN - 0022-0345
IS - 2
ER -