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Analysis of chewing movement using elliptic Fourier descriptors
The International Journal of Adult Orthodontics and Orthognathic Surgery
|January 1, 1990
Summary
Mandibular kinesiography, a jaw movement analysis, now uses Fourier analysis to quantify chewing patterns. This method enables objective diagnosis of dysfunctional chewing and identification of subtle malocclusions.
Area of Science:
- Biomechanical Engineering
- Dental Diagnostics
- Applied Mathematics
Background:
- Current analysis of chewing patterns lacks accuracy, relying on qualitative comparisons.
- Advanced image analyzers generate data that is difficult to quantify using existing methods.
- Objective, quantitative methods are needed for accurate morphologic analysis of jaw movements.
Purpose of the Study:
- To develop a mathematical model for quantitative analysis of jaw movement plots.
- To characterize different chewing classes using Fourier descriptions.
- To establish a basis for diagnosing dysfunctional chewing and identifying malocclusions.
Main Methods:
- Utilized mandibular kinesiography to record jaw movements in three spatial planes.
- Developed a mathematical model employing Fourier analysis of jaw movement plots.
- Quantified the morphologic variability of frontal plane chewing cycles and calculated distances between Fourier coefficients.
Main Results:
- A novel mathematical model was developed to analyze and characterize chewing patterns.
- The model successfully quantified the morphologic variability of chewing cycles.
- A method for calculating morphologic distance between chewing plots was established.
Conclusions:
- The developed Fourier-based model enables objective, morphoquantitative evaluation of chewing function.
- This approach facilitates the diagnosis of dysfunctional chewing.
- Further analysis of the occlusal phase can aid in detecting unapparent malocclusions.