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Discovering Craniofacial Patterns Using Multivariate Cephalometric Data for Treatment Decision Making in Orthodontics International Journal of Morphology
Araya-Díaz,Pamela; Ruz,Gonzalo A; Palomino,Hernán M.
The aim was to find craniofacial morphology patterns in a multivariate cephalometric database using a clustering technique. Cephalometric analysis was performed in a sample of 100 teleradiographs collected from Chilean orthodontic patients. Thirty cephalometric measurements were taken from commonly used analysis. The computed variables were used to perform a clustering analysis with the k-means algorithm to identify patterns of craniofacial morphology. The J48 decision tree was used to analyze each cluster, and the ANOVA test to determine the statistical differences between the clusters. Four clusters were found that had significant differences (P<0.001) in 24 of the 30 variables studied, suggesting that they represent different patterns of craniofacial...
Tipo: Journal article Palavras-chave: Craniofacial patterns; Morphological patterns; Clustering technique; Orthodontics.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300053
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Morphological Patterns of Gingival Recession in Adult Chilean Population International Journal of Morphology
Beltrán,Victor; Silva,Maritsa; Padilla,Marisel; Aillapan,Elena; Sanhueza,Antonio; Cantín,Mario; Fuentes,Ramón.
The aim of this study was to determine the prevalence of morphological patterns of gingival recession, attachment loss, and type of interdental papilla in adult subjects of different age in a Chilean population. A total of 105 patients with ages ranging from 18 to 64 years of both sexes participated in our study. The prevalence of gingival recession was 92.38%, affecting 530 teeth. The morphological pattern of gingival recession most common was class II (34.94%), followed by types III, I and IV. According to ANOVA test, differences were significant in relation to the mean number of affected teeth. Of those who had recessions, females had a slightly higher prevalence. The range 18-34 years showed a prevalence of 82.22% and from 35 years increased to 100%....
Tipo: Journal article Palavras-chave: Morphological patterns; Gingival recession; Miller's classification; Attachment loss; Interdental papilla.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400034
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