Coe Soft Case Study

6. Casey DM. and Scheer EC. in 1993 reported the use of several surface conditioning agents on temporary soft lining material. The three different surface materials were treated with Poly ethyl methacrylate monomer, Minute-Stain glaze, or mono-poly glaze. These different samples were compared after 30 days. Samples were analyzed with the use of scanning electron microscope. Initially the surface of all samples was intact. Fewer irregularities were seen in monopoly and Minute-Stain glaze treated samples. After 30 days, untreated liner and treated with monomer showed severe wear with exposure of generalized pits and holes. During mixing there was chance of subsurface air bubble incorporation. The glasslike appearance were seen in monopoly that …show more content…
Jepson NJA., McCabe JF., Storer R. in 1993 evaluated the viscoelastic properties of temporary soft lining material in vivo and in vitro using a force distance probe. They evaluated about 8 weeks for clinical use and founded that Coe Soft has significant reduction in compliance with time, the reduction being rapid over first week. They evaluated that changes were not associated with a reduction in lining thickness. There were not significant changes associated with it. In vitro immersion in water, saline or artificial saliva was characterized by a rapid and there was significant reduction in values over first week. Further reductions in values were only observed in artificial saliva over 8 weeks, and long term immersion in distilled water over 96 weeks. Compare to clinically all reductions in compliance values were significantly …show more content…
Yoeli Z., Miller V., Zeltser C. in 1996 examined the consistency of soft liner and evaluated by an initial flow test. The clinician should select the material of choice for relining procedures according to the size and shape of the ridge and the condition of the soft tissue. The consistency of four autopolymerized soft liners was compared and tested to determine that they meet the new International Standards Organization (ISO) 10139-l specifications. Softness of soft liner assessed with a Shore A durometer and compared with that of two heat-cured silicone soft liners. The consistencies of all four autopolymerized soft liners complied with IS0 specifications and their disk diameter ranged from 41.3 to 72.2 mm. Unlike the silicones the softness of all four soft liners changed with time, whose softness remained consistent. According to sample thickness softness readings varied significantly and it indicated for measuring softness properties for clinical