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Dimensional contour stability of acrylic resin bases for complete dentures before and after water sorption. 2005

Sandro Barone Monfrin, and Vincenzo Notaro, and Gianfranco Gassino, and Roberto Perotti, and Francesco Bassi
Department of Prosthodontics, School of Dentistry, University of Turin, Italy.

OBJECTIVE To evaluate the dimensional contour variations of acrylic resin denture bases before and after storage in water. METHODS The fit of 40 bases was evaluated by measuring the thickness of a layer made with silicone placed between the bases and the casts. The measurements were repeated on a new set of silicone layers after having stored the bases in water for 42 days. RESULTS Significant differences were found both for the maxillary and the mandibular bases. CONCLUSIONS Water sorption had an important effect on the contour of the prosthetic bases.

UI MeSH Term Description Entries
D003819 Denture Bases The part of a denture that overlies the soft tissue and supports the supplied teeth and is supported in turn by abutment teeth or the residual alveolar ridge. It is usually made of resins or metal or their combination. Base, Denture,Bases, Denture,Denture Base
D003824 Denture, Complete A denture replacing all natural teeth and associated structures in both the maxilla and mandible. Complete Denture,Complete Dentures,Dentures, Complete
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000042 Absorption The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
D000180 Acrylic Resins Polymers of high molecular weight which are derived from acrylic acid, methacrylic acid or other related compounds and are capable of being molded and then hardened to form useful components. Acrylic Resin,Resin, Acrylic,Resins, Acrylic
D012828 Silicones A broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed) Silicone
D014867 Water A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Hydrogen Oxide

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