Abstract
Size plays a distorting role in the estimation of facial morphology, because it can mask more subtle shape differences. The conventional metric approach provides adequate quantitative information about size only, ignoring the problems of shape definition. Mathematical methods, such as the Fourier series, allow a correct quantitative analysis of shape and its changes. Methods to reconstruct outlines, starting from selected landmarks, and to allow Fourier analysis of these outlines have been developed. These techniques were applied to analyze the age and gender variations in shape of the soft tissue facial contour (frontal plane projection) in a group of 144 healthy children, aged 6 to 7 years and 9 to 10 years. The mean contours differed for both size and shape; Fourier analysis corrected for the size discrepancy and separated the contributions of size and shape to the global morphology. In particular, the sine component (asymmetry) of the soft tissue facial contour was influenced by both age and gender.
| Original language | English |
|---|---|
| Pages (from-to) | 155-163 |
| Number of pages | 9 |
| Journal | The International journal of adult orthodontics and orthognathic surgery |
| Volume | 11 |
| Issue number | 2 |
| Publication status | Published - 1996 |
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Effect of growth and development on human soft tissue facial shape : a Fourier analysis. / Ferrario, V. F.; Sforza, C.; Guazzi, M.; Montorsi, F.; Taroni, A.
In: The International journal of adult orthodontics and orthognathic surgery, Vol. 11, No. 2, 1996, p. 155-163.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of growth and development on human soft tissue facial shape
T2 - a Fourier analysis.
AU - Ferrario, V. F.
AU - Sforza, C.
AU - Guazzi, M.
AU - Montorsi, F.
AU - Taroni, A.
PY - 1996
Y1 - 1996
N2 - Size plays a distorting role in the estimation of facial morphology, because it can mask more subtle shape differences. The conventional metric approach provides adequate quantitative information about size only, ignoring the problems of shape definition. Mathematical methods, such as the Fourier series, allow a correct quantitative analysis of shape and its changes. Methods to reconstruct outlines, starting from selected landmarks, and to allow Fourier analysis of these outlines have been developed. These techniques were applied to analyze the age and gender variations in shape of the soft tissue facial contour (frontal plane projection) in a group of 144 healthy children, aged 6 to 7 years and 9 to 10 years. The mean contours differed for both size and shape; Fourier analysis corrected for the size discrepancy and separated the contributions of size and shape to the global morphology. In particular, the sine component (asymmetry) of the soft tissue facial contour was influenced by both age and gender.
AB - Size plays a distorting role in the estimation of facial morphology, because it can mask more subtle shape differences. The conventional metric approach provides adequate quantitative information about size only, ignoring the problems of shape definition. Mathematical methods, such as the Fourier series, allow a correct quantitative analysis of shape and its changes. Methods to reconstruct outlines, starting from selected landmarks, and to allow Fourier analysis of these outlines have been developed. These techniques were applied to analyze the age and gender variations in shape of the soft tissue facial contour (frontal plane projection) in a group of 144 healthy children, aged 6 to 7 years and 9 to 10 years. The mean contours differed for both size and shape; Fourier analysis corrected for the size discrepancy and separated the contributions of size and shape to the global morphology. In particular, the sine component (asymmetry) of the soft tissue facial contour was influenced by both age and gender.
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M3 - Article
C2 - 9046636
AN - SCOPUS:0030346298
VL - 11
SP - 155
EP - 163
JO - The International journal of adult orthodontics and orthognathic surgery
JF - The International journal of adult orthodontics and orthognathic surgery
SN - 0742-1931
IS - 2
ER -