Moodhy Al, Salwa Khier.
Influence of surface treatments on Wettability of a denture base material with soft liners.
J Pak Dent Assoc Jan ;12(1):17-26.

OBJECTIVES: To determine and compare the wettability of a denture base material by some soft-liners. The effect of various surface treatments of the selected denture base material was also evaluated. MATERIALS AND METHODS: A widely used denture base material and three newly marketed soft liners were investigated. The denture base material was either stored in artificial saliva or immersed in a disinfecting solution before and after surface treatments. The intaglio of the test denture base material was treated by airparticle abrasion, addition of a rebase material and application of soft liner primer or bonding agent. The photographic method of measuring the contact angles of each soft liner was utilized to detect variations in the wettability of the denture base material before and after its surface treatment. For each combination of soft liner and treatment, five readings were recorded. Data was statistically analysed by one way analysis of variance (ANOVA) and Student`s t-test. RESULTS AND CONCLUSIONS: For all the soft liners, in general, air-particle abrasion of the denture base material significantly improved (p<0.001) its wetting as indicated by the recorded lower contact angle values. However, addition of the rebase material on the denture base surface had either no effect or increased the contact angle measurements except for Softliner stored in artificial saliva.

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