Biomaterial Database

Sorption and solubility of soft denture liners after accelerated aging. 1999

C Hekimoğlu, and N Anil

Hacettepe University, Faculty of Dentistry, Department of Prosthodontics, Ankara, Turkey. hekim@hitit.ato.org.tr

OBJECTIVE To determine the sorption and solubility properties of soft liners in relation to the aging process. METHODS Five soft liners (Flexor, Molloplast B, Ufigel L, heat-cured; Simpa, Ufigel P, cold-cured) were used. The sorption and solubility tests were performed as outlined in the American Dental Association (ADA) specification 12 for denture base polymers. Ten specimens of each material were fabricated. One set of five specimens was subjected to accelerated aging process in the Weather-Ometer instrument. The test materials were dried in a desiccator and then immersed in distilled water at 37 +/- 1 degrees C for 15, and 30 days. The sorption behavior of the test specimens was calculated. The solubility behavior of the test materials was determined only after 30 days. RESULTS Aged materials immersed in water for 15 days showed different sorption properties related to the material. After water immersion for 30 days, the materials showed increased sorption properties. Negative increase in solubility was determined after aging for all liners except Flexor.

UI	MeSH Term	Description	Entries
D008422	Materials Testing	The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.	Biocompatibility Testing,Biocompatible Materials Testing,Hemocompatibility Testing,Testing, Biocompatible Materials,Testing, Hemocompatible Materials,Hemocompatibility Testings,Hemocompatible Materials Testing,Materials Testing, Biocompatible,Materials Testing, Hemocompatible,Testing, Biocompatibility,Testing, Hemocompatibility,Testing, Materials,Testings, Biocompatibility
D011108	Polymers	Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).	Polymer
D003764	Dental Materials	Materials used in the production of dental bases, restorations, impressions, prostheses, etc.	Dental Material,Material, Dental,Materials, Dental
D003822	Denture Liners	Material applied to the tissue side of a denture to provide a soft lining to the parts of a denture coming in contact with soft tissue. It cushions contact of the denture with the tissues.	Cushion Liners,Cushion Liner,Denture Liner,Liner, Cushion,Liner, Denture,Liners, Cushion,Liners, Denture
D004129	Dimethylpolysiloxanes	Silicone polymers which consist of silicon atoms substituted with methyl groups and linked by oxygen atoms. They comprise a series of biocompatible materials used as liquids, gels or solids; as film for artificial membranes, gels for implants, and liquids for drug vehicles; and as antifoaming agents.	Dimethylsiloxanes,Polydimethylsiloxanes,Dimethylpolysiloxane,Dimethylsiloxane
D000042	Absorption	The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
D000327	Adsorption	The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily.	Adsorptions
D012826	Silicone Elastomers	Polymers of silicone that are formed by crosslinking and treatment with amorphous silica to increase strength. They have properties similar to vulcanized natural rubber, in that they stretch under tension, retract rapidly, and fully recover to their original dimensions upon release. They are used in the encapsulation of surgical membranes and implants.	Elastomers, Silicone,Rubber Silicone,Silicone Rubber,Elastosil,Microfil,SE-30,Elastosils,Microfils,SE 30,SE30,Silicone Elastomer
D012995	Solubility	The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Solubilities
D013499	Surface Properties	Characteristics or attributes of the outer boundaries of objects, including molecules.	Properties, Surface,Property, Surface,Surface Property