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This paper describes an original experimental procedure to measure mechanical interactions between tongue and teeth during speech production. Using edentulous people as subjects, pressure transducers are inserted in their complete denture duplicate. Physiology is respected during sound and pressure recording as with standard complete denture. Original calibration device is also described in order to know what kind of information can be extracted from the data. Then the first results of the pilot experiments are presented. Index Terms—speech production, tongue/palate interaction, complete denture, pressure transducer, tongu