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Effect of malocclusion on mandibular movement during speech
T Kuwahara1, C Yoshioka, H Ogawa
1Department of Fixed Prosthodontics and Occlusion, Osaka University, Japan.
The International Journal of Prosthodontics
|May 1, 1994
Summary
Malocclusion significantly impacts how the jaw moves during speech, affecting the envelope of motion. Analyzing these movements aids in diagnosing dental issues and planning treatment.
Area of Science:
- Dentistry
- Biomechanics
- Speech Science
Background:
- Malocclusion, a misalignment of teeth, can affect oral functions.
- Understanding mandibular movement during speech is crucial for functional assessment.
Purpose of the Study:
- To investigate the influence of malocclusion on mandibular movement patterns during speech.
- To assess the diagnostic value of analyzing the envelope of motion in speech.
Main Methods:
- Utilized the Sirognathograph Analyzing System to record mandibular movements in 10 normal and 60 malocclusion subjects.
- Analyzed the form of the envelope of motion and its relationship with eccentric movement paths during speech.
Main Results:
- Specific malocclusions showed distinct relationships between the envelope of motion and eccentric movement paths.
- The location and form of the envelope of motion were closely linked to the type of malocclusion present.
Conclusions:
- Analysis of the envelope of motion during speech offers valuable diagnostic information for speech function.
- Detailed analysis of speech-related mandibular movements can guide dental treatment planning.