Publicação: Unrestricted linear dimensional changes of two hard chairside reline resins and one heat-curing acrylic resin
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The selection and use of hard chairside reline resins must be made with regard to dimensional stability, which will influence the accuracy of fit of the denture base. This study compared the dimensional change of two hard chairside reline resins (Duraliner II and Kooliner) and one heat-curing denture base resin (Lucitone 550). A stainless steel mold with reference dimensions (AB, CD) was used to obtain the samples. The materials were processed according to the manufacturer's recommendations. Measurements of the dimensions were made after processing and after the samples had been stored in distilled water at 37° C for eight different periods of time. The data were recorded and then analyzed with analysis of variance. All materials showed shrinkage immediately after processing (p < 0.05). The only resin that exhibited shrinkage after 60 days of storage in water was Duraliner II; these changes could be clinically significant in regard of tissue fit.
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acrylic acid resin, duraliner II, kooliner, Lucitone, polymer, water, analysis of variance, chemistry, comparative study, denture, human, Acrylic Resins, Analysis of Variance, Denture Bases, Denture Liners, Denture Rebasing, Humans, Polymers, Water
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Inglês
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Journal of Prosthetic Dentistry, v. 76, n. 4, p. 414-417, 1996.
