Effect of wet and dry cellulose ring liners on setting expansion and compressive strength of a gypsum-bonded investment.

Effective setting expansion of gypsum-bonded investments is influenced by many variables. The purpose of this study was to determine the effect of using either water-saturated or dry cellulose ring lining material on (1) the fit of castings on a steel die and (2) the compressive strengths of investment cores using either type of liner. The mean gingival… CONTINUE READING