THE CLINICAL SERVICEABILITY OF 2 PERMANENT DENTURE SOFT THINGS

Forty-four patients, most of whom had previous experience of soft lini ngs, had a total of 62 soft linings placed in their lower complete den tures: 32 of the silicone-based Molloplast-b and 30 of the heat-cured plasticised acrylic Palasiv 62. Linings were evaluated at insertion an d then at 3-monthly intervals. Surface changes and the reasons for lin ing replacement were used to assess the clinical serviceability of the linings. The median survival time of Molloplast-b linings was signifi cantly greater than that of Palasiv 62, whose performance was inadequa te with frequent failure due to surface deterioration, with and withou t a failure of bonding. Denture fracture was the most common cause of lining failure for Molloplast-b and occurred more frequently than with Palasiv 62. Fading and lining discolouration was commonly observed fo r both materials.