[Accuracy of fit of the denture base depending on various jaw geometries. Biotechnical analysis]

Good function of full dentures is closely related to an accurate fit of the denture bases. The shape of these bases depend again on the polymerization technique applied. Methods of biotechnical analysis were employed to determine the effects of the alveolar ridge, defined as an angle with the vertical plane, on the accuracy of fit. Both the expansion of castings and the curing contraction of acrylics were taken into consideration in this analysis. The relationships between an increase or reduction of the full denture base and the mechanism of adhesion to the denture-bearing area were computed and their practical implications are discussed.