Objectives: Bubbles within the denture lining materials appear on the surface of denture after polishing. Such an environment facilitates the growth of Candida. In this study, the number of bubbles in the denture lining material was compared with that of conventional materials, namely: Mild Rebaron (MR: GC, Japan), Denture Liner (DL: Shofu, Japan), Tokuso Rebase (TR: Tokuyama, Japan), and Rebase II (RII: Tokuyama, Japan). Methods: The test specimens (Five for each material) were 30mm diameter discs, 1mm thick and were tested at room temperature. The bubbles were counted using a digital photograph and calculated by a computer program. The specimens were placed on a microscope and photographed. The numbers of the bubbles were used as parameters with which to compare the materials. The results were obtained using a One-way ANOVA (p<0.05) test. Results: The bubble numbers for the different materials were as follows: MR: 194.4 (61.0) > RII: 58.0 (16.8) > DL: 46.4 (9.4) > TR: 28.4 (7.4). The Results showed significant differences between materials (P<0.05) according to our test. The MR showed a significantly larger number of bubbles than the other denture lining materials. Conclusion: The number of bubbles is one important consideration of denture lining materials. This parameter helps the dentist select the appropriate denture lining materials for patients with denture stomatitis.

Back to the Dental Materials: VI - Polymer Materials-Mechanical Properties and Degradation Program
Back to the IADR/AADR/CADR 82nd General Session (March 10-13, 2004)

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