 The McGill Denture Satisfaction Instrument 17 will be used to evaluate patients satisfaction relating to their prostheses. This questionnaire is a treatment-specific patient-based outcome assessing satisfaction relating to 6 aspects of the mandibular prosthesis: general satisfaction, comfort, stability, aesthetics, chewing ability ease of chewing, chewing efficiency ability to crush food in small particles, ease of cleaning, ability to speak and oral condition condition of their mouth, which can refer to oral health status and was measured by In general, are you satisfied with your oral condition?. The subjects will answer on 100 mm visual analogue scales VAS anchored by the words not at all satisfied and extremely satisfied. 