Influence of Storage Methods on Surface Roughness of Tissue Conditioners

Objectives: The purpose of this study was to determine the influence of different storage methods on surface roughness of tissue conditioners. Methods: Four commercial tissue conditioners (GC Soft Liner, Softone, Fictioner, Hydro-Cast) were used in this study. Type IV dental stone (New-Fujirock) were used. Five samples of each material were stored in the distilled water, air and solution of denture cleanser (Polident) for 14 days. The surface roughness of each material was measured after 0, 1, 3, 7 and 14 days by Profilomater (Surfcorder SE 3300). Surface porosity of the tissue conditioners was examined and classified into five grades; a score of 0 (no change), 1 (slight change), 2 (moderate change), 3 (marked change), or 4 (severe change) was recorded. Results: Table shows the values of surface roughness of each material stored in water, air and solution of denture cleanser after 3 days. The significant differences were found among different storage methods in surface roughness of tissue conditioners (p<0.05, ANOVA). The values of surface roughness increased with an increasing in time significantly (p<0.05) in each storage method, except for storage method in air. The samples stored in air showed most stability and lowest values of surface roughness. The severer distortion was observed in the samples stored in solution of denture cleanser; followed by samples stored in distilled water. The samples stored in air showed the least distortion. Conclusion: The results suggest that best method of storing a denture with tissue conditioner is to keep in the air from the standpoint of surface roughness.

(  ) : SD