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open access
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ISSN : 0376-4672
Purpose : The purpose of this study was to compare the wettability of 4 type of denture relining materials by measuring contact angle with saliva substitute. Materials and methods : Heat-cured reline resin(Vertex RS), Self-cured reline resin(Probase Cold, Tokuyama Rebase Ⅱ), soft liner(COE Soft) were fabricated as specimens. Before and after storage in saliva substitute for 24 hour, contact angle between specimens and CMC based saliva substitute(Xerova soln) were measured. Contact angle according to denture relining materials were analyzed by one-way ANOVA and Tukey test(α=0.05). Con tact angle before and after storage in saliva substitute were analyzed by independent t test(α=0.05). Results : Before storage, Rebase Ⅱ showed significantly lower cont859623act angle compared to Vertex RS, Probase Cold, COE Soft(P<0.05) and COE Soft showed significantly higher contact angle compared to Vertex RS, Probase Cold, Rebase Ⅱ(P<0.05). After storage, Rebase Ⅱ showed significantly lower contact angle compared to Vertex RS, COE Soft(P<0.05) and COE Soft showed significantly higher contact angle compared to Vertex RS, Probase Cold, Rebase Ⅱ(P<0.05). Before and after storage, Rebase Ⅱ and COE Soft showed significant difference(P<0.05). Conclusion : Before and after storage in saliva substitute for 24 hour, the contact angle was highest in the order of Rebase II, Probase Cold, Vertex RS, and COE Soft. After storage in saliva substitute for 24 hour, the contact angle of Rebase II and COE Soft changed, but Vertex RS and Probase Cold did not change.
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