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P Monsénégo

Publications and source records attributed to P Monsénégo.

3 recordsLinked to original sources
PubMed1989

Complete denture retention. Part I: Physical analysis of the mechanism. Hysteresis of the solid-liquid contact angle.

Analysis of physical forces involved in the mechanism of denture retention clearly shows that the hysteresis of the liquid-solid contact angle governs the viscoelastic response of the system dislodgment. This result is in contradiction to the most commonly admitted view according to which perfect wettability is necessary to obtain good retention and implies the existence of the high advancing contact angle of saliva on a prosthetic material.

Capillary Action↗
PubMed1989

Complete denture retention. Part II: Wettability studies on various acrylic resin denture base materials.

The objective of this study was to characterize in vitro selected acrylic resin denture base materials by water-contact angle measurements. The sessile drop method and the underwater-bubble method were used. The results obtained from these measurements are discussed in terms of contact angle and polymer-water work of adhesion hysteresis. On polished heat-polymerized samples this hysteresis results from the reorientation of superficial polymer chains. The combined effect of increased sample roughness and of the entrapment of water droplets in the pores of material gives rise to the highest contact-angle hysteresis observed on sand-abraded samples. On the basis of physical analysis of the mechanism involved in complete denture retention, developed in Part I of this work, it is believed that the sand-abraded material is the most convenient for the retention of the complete denture.

Acrylic Resins↗