Edentulism is defined as “the state of edentulism; without natural teeth." The consequences of tooth loss have been described in multidimensional views. While edentulism is not a life-threatening condition, it is a debilitating and irreversible condition and is described as the “ultimate marker of oral health impairment.” It is known to directly affect facial structures, nutrition, the ability to perform functional tasks such as eating, speaking and socializing. Although the incidence of edentulism has been decreasing in the last decade, with the advent of science and technology there has been a significant increase in average life expectancy, therefore edentulism remains one of the main diseases worldwide, especially among the elderly population. Conventional complete denture (CD) still remains the first choice of treatment for the rehabilitation of isolated edentulous maxilla. Complete denture is defined as "a fixed or removable dental prosthesis that replaces the entire dentition and associated structures of the maxilla or mandible." Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay According to the acoustic theory of speech production, the acoustic characteristics of speech are usually modeled as a sequence of source, vocal tract filter, and radiation characteristics. Since it is claimed that complete dentures alter the resonance cavity of the vocal tract, many authors have reported speech disorders in patients wearing complete dentures. Consequently, to optimize its performance in speech production, knowledge of the dynamic contacts of the tongue on the prosthesis is essential. However, numerous experimental systems have been designed in the recent past. the number of studies available is limited, in particular studies on dynamic measurements of tongue force exerted on the complete denture during phonation. Mainly, through this clinical case our objective is to illustrate the usefulness of a new experimental apparatus, to be used in edentulous patients, to quantitatively evaluate the impact of the complete prosthesis on speech production. The focus of this study is the detailed presentation of the spatial and temporal mapping of the contacts applied by the tongue on the prosthesis. Specifically, the aim of this study was to evaluate the differences in contact dynamics in French stops in a patient with a complete denture. Tongue-palate contact was assessed by measuring pressure and time patterns characterizing deformation signals and acoustic signals based on several parameters related to consonant production. Importantly, this patient had been using the prosthesis for more than three months and his adaptation to the prosthesis had been completed. Furthermore, the transducers and strain gauge wires produced no further changes in the morphology of the artificial plate, we assumed that no perturbation to the joint had been caused. Therefore, in this study we were able to record the tongue-palate interaction under conditions that were, to the best of our knowledge, as close as possible to the natural physiological state of the complete denture user..