Effect of palatal portion replacement on the vertical pin opening and linear dimensions of maxillary denture relined with heat cured acrylic resin

ABSTRACT

Twenty four duplicate maxillary dentures were relined with heat cured acrylic resin to study the effect of palatal portion replacement on the linear dimensional changes and vertical pin opening. Dentures relined without palatal portion replacement were compared to those with either the central part or most of the palatal portion; including the posterior palatal border; removed. The results of this study concluded that, palatal portion replacement must be accomplished during relining; preferably; the posterior palatal border must be included in this replacement. The increased vertical dimension after maxillary denture relining is probably attributed to curing shrinkage of the denture base