Comparative evaluation of complete dentures fabricated using two different final impression techniques on retention, stability and masticatory efficiency in mandibular poor foundation patients - A Clinical Study.

In this clinical study we will be comparatively evaluating complete dentures fabricated using two different final impression techniques i.e admixed impression technique and cocktail impression technique following selective pressure and functional impression techniques respectively in mandibular poor foundation patients on retention, stability and masticatory efficiency.In the admixed technique, secondary impression was made using McCord and Tyson’s admixed technique for flat mandibular ridges. Impression compound and green tracing stick compound in the ratio of 3 : 7 parts by weight.9 Cocktail impression technique -The technique described here utilizes the 9 customized tray fabricated according to Dynamic impression technique described by Tryde et al. , impression material recommended by McCord and Tyson’s technique for atrophic mandibular ridge followed by functional impression as in closed mouth impression technique. So the word “Cocktail†refers to the combination of different impression techniques to obtain a definitive impression.the scoring of the stability and retention(dynamometer test)  will be given as per CU modified kapur’s scale.The masticatory efficiency of the patients will be measured using colour changing chewing gum(Xylitol, Lotte). Patient will be asked to chew the chewing gum and it will be evaluated using spectrophotometry.