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The effects of practice and visual feedback on mandibular border movements
Proceedings of the National Science Council, Republic of China. Part B, Life Sciences
|January 1, 1987
Summary
Training did not significantly alter jaw border movements in healthy subjects. Verbal instruction showed higher improvement rates (70-85%) than visual feedback (50-65%) for jaw border tracing.
Area of Science:
- Dental Science
- Biomechanics
- Kinesiology
Background:
- Mandibular border movements are crucial for masticatory function and jaw health.
- Understanding the impact of training on these movements is essential for clinical assessment and rehabilitation.
Purpose of the Study:
- To investigate the effects of training, including verbal instruction and visual feedback, on mandibular border movements in healthy subjects.
- To determine if training is necessary for obtaining comparable data on jaw border tracing.
Main Methods:
- Twenty healthy subjects underwent repeated measurements of mandibular border movements (lateral excursions, protrusive movement, mouth opening).
- Measurements were taken with and without practicing and visual feedback.
- Key parameters analyzed included left/right lateral excursions, protrusive movement, mouth opening, and midline deviations.
Main Results:
- No significant differences were found in the extent of border movements due to training.
- Verbal instruction practice led to improvement in 70-85% of subjects, while visual feedback improved 50-65%.
- Repeated border tracing did not negatively impact results in healthy subjects.
Conclusions:
- Training is not essential for obtaining comparable jaw border movement data in healthy individuals.
- Verbal instruction appears more effective than visual feedback for improving border tracing in this population.
- Practicing or using visual feedback may enhance the repeatability of border tracing measurements.