Page 31 - Impact of implant retained overdenture treatment and speech, oromyofunction, social participation and quality of life.

Introduction
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Table 1. Literature speech and complete dentures: Fixed Implant supported Denture =FID, Overdenture = IOD, Conventional Denture = CD (palatal coverage), Single Implant Restauration =SIR, Natural Dentition =ND.
Authors Petrovic (1985)
Purpose the study
Subjects and methods
Results
Evaluation of speech problems caused by changes in morphology of the upper CD.
n: 125
Effect of changes in thickness of the palate to spectral features of speech
- Changes in resonance cavity, influencing the sounds’ energy in the higher
Morphological changes
- Thickness of the palate
frequency region.
- Distortion of the sounds in the word ‘ivica’
- Thickness above 1,2 mm causes faster distortion of sounds.
- Energy ratio of the highest and lowest frequency in the /i/ sound changed
(0,7mm; 1,2mm; 2mm)
- Anterior vs. posterior position of the upper
significant.
incisors
Timing
- with old CD
- without CD
- with CD with
Changes in position of the upper incisors
- 2mminlabialdirectioncausedin80%ofthesubjectsdistortionofspeech.
morphology
different
changes in
Adaptation time: - 7 days
- 1 month
- 8 months