PMC9069104_01
Patient's facial and intraoral photographs and the lip shield.
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F1
The facial and intraoral photographs are shown in Figure 1. An image of the design and fabrication of the lip shield is shown in Figure 1.
The musical scale task used for psychoacoustic analysis.
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F2
Figure 2 shows the music-scale task used for psychoacoustic analyses.
The loudness (A) and sharpness (B) results of the psychoacoustic analyses.
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F3
Figure 3 shows the loudness and sharpness results of the psychoacoustic analyses.
The results of the self-evaluation questionnaire, with items rated using a 10-point scale, at 1 week, 3 months, and 8 months. A score of 10 indicates good and 0 indicates bad.
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F4
Figure 4 shows the results of the self-evaluation questionnaire after 1 week, 3 months, and 8 months.