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Influence of polymerization method, curing process, and length of time of storage in water on the residual methyl methacrylate content in dental acrylic resins
Author(s) -
Bayraktar Gulsen,
Guvener Bora,
Bural Canan,
Uresin Yagiz
Publication year - 2006
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30377
Subject(s) - distilled water , acrylic resin , polymerization , materials science , methyl methacrylate , curing (chemistry) , residual , composite material , chemistry , chromatography , polymer , algorithm , computer science , coating
This study compared the influence of different polymerization methods (heat, auto‐, and microwave energy), different curing processes (in the case of heat‐ and autopolymerized specimens), and length of storage of the polymerized specimens in distilled water at 37°C on the residual methyl methacrylate (MMA) content in dental acrylic resin specimens. Residual MMA of 120 resin specimens were measured using high‐performance liquid chromatography. For the heat‐polymerized resins, the lowest residual MMA content was obtained when they were given a long‐term terminal boil and then stored in the distilled water for at least 1 day. For the autopolymerized resins, the lowest residual MMA content was obtained when they were additionally cured in water at 60°C and then stored in the distilled water at least 1 day. For the microwave‐polymerized resins, the lowest residual MMA content was obtained when they were stored in the distilled water at least 1 month. The lowest overall residual MMA content was obtained from heat‐polymerized specimens that were given a long‐term terminal boil cure and then stored in the distilled water at least 1 day. Different polymerization methods and curing processes have different effects on residual MMA content. It is thus shown that storing a dental acrylic resin specimen in distilled water at 37°C is a simple but effective method of reducing its residual MMA content. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006