Extrait

Background and study aims When people start wearing dentures for the first time, it can affect the way they speak. They may find that their voice has changed and they may have difficulties speaking for a short while. Possible reasons for this include the tongue not being able to get into the correct position or the denture itself being too thick or thin in certain areas. This study looks at the effect of different types of material of complete denture bases and different types of teeth on a person’s short-term phonetics (I.e. the way they sound when they speak). Complete dentures affect speech sounds by changing the shape of the mouth (oral cavity dimensions) and structure (morphology). Upper incisors (front upper teeth) and different thickness of the dentures palatal plate in different positions have been reported as having an effect on the dimensions of the oral cavity. The impact of these factors on sounds, virtual period of distinct sounds in a word and the patient’s variation with the dentures were examined. Speech making has a major consequence on patients’ overall pleasure with the dentures and make them more likely to accept them. The changes in speech that often happen after a person starts to wear dentures are often temporary, but are still a source of worry for many. In addition, there is a lack of guidelines on designing dentures with best phonetic success. Who can participate? Men aged at least 55 years without teeth. What does the study involve? Participants are split into two batches with three groups in one batch and two groups in the other. Allocation to a particular group is done randomly. The participants in the first batch are given dentures made with one of three different denture base materials (flexible acrylic resin, heat cure acrylic resin, or chrome cobalt metallic base). The two groups in the second batch are given one of two different teeth types for their dentures: acrylic teeth and porcelain teeth. Each participants speech is then analysed by measuring their phonetics immediately after being given their dentures, then again 3 weeks and ten weeks later. What are the possible benefits and risks of participating? Not provided at time of registration. Where is the study run from? Al-Azhar University-Assiut Branch Dental Clinic (Egypt) When is the study starting and how long is it expected to run for? January 2015 to April 2015 Who is funding the study? Albaha University (Saudi Arabia) Who is the main contact? Professor Khalid Arafa

Critère d'inclusion

• Dentures and phonetics

Liens

• ictrp
• isrctn