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	Provedor de dados 77 (3) Autor Araya-Díaz,Pamela (3) Palomino,Hernán M (3) Díaz,Patricia V (1) Ruz,Gonzalo A (1) Vilaza,Isabella (1) Palavra-chave Airway analysis (1) Cefalometría (1) Cephalogram (1) Clustering technique (1) Craniofacial patterns (1) Crecimiento Craneofacial (1) Morphological patterns (1) Oropharyngeal width (1) Orthodontics (1) Puntos de referencia (1) Mais... Tipo do documento Journal article (3) Ano 2017 (1) 2015 (1) 2013 (1) País Chile (3) Idioma Inglês (2) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Discovering Craniofacial Patterns Using Multivariate Cephalometric Data for Treatment Decision Making in Orthodontics 77 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 Desplazamiento de los Puntos de Referencia Craneales Utilizados en los Análisis Cefalométrico de Jarabak y Ricketts, Durante el Crecimiento Activo 77 Díaz,Patricia V; Araya-Díaz,Pamela; Palomino,Hernán M. El objetivo de este trabajo fue evaluar el desplazamiento de los puntos craneales: Nasion, Silla, Basion, Porion, Orbitario y Pterigoideo, utilizados como referencia en los análisis cefalométricos de Jarabak y Ricketts durante el crecimiento activo. Se seleccionaron 120 telerradiografías de perfil en formato digital, correspondientes a 60 pacientes con 2 telerradiografías cada uno, tomadas con un intervalo de tiempo mínimo de 1 año (T1 y T2), en donde T1 se encuentra antes o durante el peak de crecimiento según el Estado de Maduración Cervical Vertebral (CVM) I, II ó III de Baccetti y T2 en estadio CVM IV,V,VI (después del peak de crecimiento). Un examinador previamente calibrado, ubicó los puntos analizados y para evaluar su desplazamiento, se realizaron... Tipo: Journal article Palavras-chave: Puntos de referencia; Crecimiento Craneofacial; Cefalometría. Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000100036 Two-dimensional and Three-dimensional Assessment of the Upper Airway 77 Vilaza,Isabella; Araya-Díaz,Pamela; Palomino,Hernán M. The aim of this study was to validate and correlate the two-dimensional (2D) with the three-dimensional (3D) measures of the upper airway assessment. Lateral cephalograms and cone beam CT of 100 adult subjects were used to perform a 2D and 3D assessment of the upper airway. Spearman correlation coefficient was used to determine whether there was correlation between variables. Additionally, specificity, sensitivity, negative predictive value and positive predictive value was calculated for the 2D assessment of the upper airway. Correlation between all two and three dimensional variables was found. In the nasopharynx and oropharynx, a weak correlation (r <0.51) was found; in the oropharynx a moderate one (0.50 <r <0.76). The validity tests of the 2D... Tipo: Journal article Palavras-chave: Oropharyngeal width; Airway analysis; Cephalogram. Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000100056 Registros recuperados: 3 Primeira ... 1 ... Última

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