Uma nova técnica de moldagem funcional para maxilas edentadas com tecido flácido anterior, através de injeção de silicone

Resumo (EN)

The anteroposterior retention of the denture for edentate maxillas presenting anterior flabby tissue has not been satisfactory, nevertheless the impression technique employed. lt is imperative to elect an impression making technique according to different mucosa's compressibility. A functional impression making technique has been developed for edentate maxillas presenting anterior flabby tissue. After preliminary impression made by compound, a stone cast and na individual tray is made. A block-out over corresponding flabby tissue leads to a chamber of relief of this area. The functional molding is made in three steps. 1) The impression is made with silicone material, aiming to fit the tray and to outline any interference point of the tray, displacing the flabby tissue. 2) The chamber is emptied and a second impression is made, recording the flabby tissue without pressure. 3) The chamber is emptied for the second time, the molding is fitted with mild pressure and in this condition, and silicone material is injected into the chamber, recording the turgid flabby tissue. The retention achieved with this technique meets a satisfactory standard once the silicone rubber material injected reproduces the flabby tissue, which becomes more turgid under the compression of the circa-adjacent tissues. This fulfillment arises from the blood flow pressure into the flabby tissue (anterior area). This technique focuses on the anteroposterior retention of the upper denture. This kind of retention is achieved not from recording the flabby tissue on a deformed condition nor from a rest one, but primarily by the fact that the flabby tissue is reproduced in a turgid form, such as it becomes as the denture will be physiologically used.