Influence of composition on the adhesive strength and initial viscosity of denture adhesives.
To investigate the effect of composition on the initial viscosity and adhesive strength between denture adhesives and the denture base. Two types of water-soluble polymers (methoxy ethylene maleic anhydride copolymer [PVM-MA] and sodium carboxymethyl cellulose [CMC]) were used. Samples were divided into three groups. Group 1 contained only PVM-MA; Group 2 contained only CMC; and Group 3 contained PVM-MA and CMC. The initial viscosity and adhesive strength were measured. For Group 1, the initial viscosity increased significantly as PVM-MA content increased. The adhesive strength of Group 1 lasted longer than Group 2. The adhesive strength of Group 3 varied greatly. The ratio of CMC and PVM-MA has a significant effect on the initial viscosity and adhesive strength of denture adhesives. Our results suggest that it is possible to improve the durability of a denture adhesive by combining different water-soluble polymers.
Dental Materials Laboratory, National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology.
Jian-min
JM
Han
Guang
G
Hong
Kentaro
K
Hayashida
Takeshi
T
Maeda
Hiroshi
H
Murata
Keiichi
K
Sasaki
D000269:Adhesives / Q000737:chemistry*; D002266:Carboxymethylcellulose Sodium / Q000737:chemistry*; D003799:Dental Stress Analysis; D003819:Denture Bases; D003781:Denture Retention; D008298:Maleates / Q000737:chemistry*; D008422:Materials Testing; D010232:Paraffin; D010577:Petrolatum; D011095:Polyethylenes / Q000737:chemistry*; D014783:Viscosity
D000269:Adhesives; D008298:Maleates; D011095:Polyethylenes; D010232:Paraffin; D010577:Petrolatum; C007668:ethylene-maleic anhydride copolymer; D002266:Carboxymethylcellulose Sodium