Prosthetic management Impression techniques: Sectional impression techniques/windows technique (two stage) One part impression (selective perforation tray) Controlled lateral pressure techniques Palatal splinting using a two part tray system Selective displacement techniques/selective composition flaming technique Two part impression technique : mucostatic and mucodisplacive combination Addison P I. Mucostatic impressions. J Amer DentAssoc 1944; 31: 941
The jaw relation is recorded using check bite technique Cross linked cuspless acrylic teeth re used to dcrease the lateral component of force After denture insertion, the patient is instructed for periodic check up of the denture
Sectional impression technique/windows technique (two stage) Preliminary impression alginate loaded in astock tray Poured impression and accustom tray is constructed om the model Custom tray:close fitting with window over the area corresponding to the flabby ridge Taken an impression in zinc oxide eugenol or low viscosity silicone Injected low or medium viscosity silicone ( mucostatic )over the flabby ridge with the secondary impression in place Removed as one impression
One part impression technique(selective perforation tray) The degree of mucosal displacement is minimal,(modified conventional technique) Preliminary impression :alginate in stock trays after appropriate border correction Fabrication of spaced special tray with perforations from the primary cast Secondary impression low viscosity impression material (impression plaster low-viscosity silicone or alginate) in spaced special tray
Contralled lateral pressure technique administered in a fibrous posterior mandibular ridge Preeliminar impression: alginate + convencional tray . Making special tray with border moulding through green stick tracing compound. Removed green stick over the fibrous crestal tissue with a heated instrument and vent holes are made in the tray in this region. Second impression:with liht body silicone material + special tray ,which is applied on the buccal and lingual aspects of green stick in the area. The perforation allows the excess material to flow out.since the green stick extensions exert even bilateral pressure on the fibrous ridge, it will assume resting central position.