Abstract
With regard to the relation between articulatory function and the location of the major connector, i.e., a component of the partial denture, variations in function of respective articulatory organs and their autocorrection affected by the location of the major connector are assumed to be important. Therefore, tongue muscular activity prior to articulation was determined for consecutive days in subjects who showed normal occlusion with natural dentition, using three types of experimental partial palatal plates having palatal bars in different locations. The conditions before and after application of these three plates were analyzed, and the following results were obtained.
In accordance with the results of the duration and EMG activity of tongue muscle, different setting positions of the palatal bar were found to be under the influence of the tongue muscle on articulatory function and self-compensation of the articulators. The posterior palatal bar proved to be an attachment of choice when making a partial denture with due consideration for the articulatory function of the tongue muscle.
