Measuring 3D shape in orthodontics through geometric morphometrics.
- Huanca Ghislanzoni L Department of Orthodontics, University of Geneve, Geneve, Switzerland. dottor.acca@gmail.com.
- Lione R Department of Orthodontics, University of Rome Tor Vergata, Rome, Italy.
- Cozza P Department of Orthodontics, University of Rome Tor Vergata, Rome, Italy.
- Franchi L Department of Surgery and Translational Medicine, University of Florence, Florence, Italy.
- 2017-12-02
Published in:
- Progress in orthodontics. - 2017
Anatomic Landmarks
Cephalometry
Face
Humans
Imaging, Three-Dimensional
Orthodontics
Palate
Principal Component Analysis
English
BACKGROUND
Geometric morphometrics (GMM) has been traditionally applied to the field of biology to study developmental differentiations between species. Orthodontics deals with the shape and size of the face and its components. While several tools have been used to measure size, proportions, and relations between anatomical components, shape has been mainly described by esthetic criteria. The purpose of this paper is to present methods to measure shape of 3D orthodontic data, beyond the conventional tools that have been traditionally used in cephalometrics and in facial and dental cast analysis.
FINDINGS
The authors showcase an example of applying geometric morphometrics to measure palates from scanned dental casts. GMM can be used as a useful tool to describe the three-dimensional shape of surfaces of orthodontic interest. A general introduction to the theoretical principles of how to apply GMM is provided.
CONCLUSIONS
Variability can be measured through the Principal Component Analysis (PCA) and can lead to the identification of shape patterns and sources of variability of the shape, independently from changes in size.
Geometric morphometrics (GMM) has been traditionally applied to the field of biology to study developmental differentiations between species. Orthodontics deals with the shape and size of the face and its components. While several tools have been used to measure size, proportions, and relations between anatomical components, shape has been mainly described by esthetic criteria. The purpose of this paper is to present methods to measure shape of 3D orthodontic data, beyond the conventional tools that have been traditionally used in cephalometrics and in facial and dental cast analysis.
FINDINGS
The authors showcase an example of applying geometric morphometrics to measure palates from scanned dental casts. GMM can be used as a useful tool to describe the three-dimensional shape of surfaces of orthodontic interest. A general introduction to the theoretical principles of how to apply GMM is provided.
CONCLUSIONS
Variability can be measured through the Principal Component Analysis (PCA) and can lead to the identification of shape patterns and sources of variability of the shape, independently from changes in size.
- Language
-
- English
- Open access status
- gold
- Identifiers
-
- DOI 10.1186/s40510-017-0194-9
- PMID 29192356
- Persistent URL
- https://sonar.ch/global/documents/271502
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