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Taste acuity of the human palate. I. Studies with electrogustometry and taste solutions on young adults.

The purposes of the study were to determine whether or not taste perception was present in the area which would have been covered by the base plate of a full upper denture and, if taste perception was present there, to compare its strength to that of the remainder of the soft palate and of the apex and base of the tongue. The taste acuity of 32 dental students was measured at the apex and base of the tongue and on the hard and soft palate using two methods, an electric current and sweet, salty, sour and bitter test solutions, the latter in order to determine whether or not there exist differences in the perception of the different taste modalities in these areas. No taste perception could be demonstrated on the hard palate except in the region close to the border between the hard and soft palate, where the threshold values were very high compared with those for the soft palate immediately behind this border and for the tongue. The inter-individual range of the threshold values for the soft palate was very large. Further studies on the taste acuity of the human palate and its role in the total perception of taste are indicated.