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1.
Dental press j. orthod. (Impr.) ; 23(2): 37-45, Mar.-Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-953014

ABSTRACT

ABSTRACT Objective: To correlate skeletal age, standing height, upper and lower body lengths, and selected craniofacial growth features in a sample of growing individuals, and to model craniofacial growth using multivariate regression. Methods: This was a retrospective cross-sectional study with 447 African black boys and girls, between the ages 8 and 16 years, who attended the dental clinic at one hospital. The skeletal maturational age was determined from hand-wrist radiographs using the Greulich and Pyle atlas. Craniofacial measurements representing maxillary length (Ar-ANS), mandibular length (Ar-Gn), and lower facial height (ANS-Me) were calculated from lateral cephalograms in habitual occlusion. Body lengths were clinically measured in centimeters. Results: Moderate correlations (r=0.42 to 0.68) were observed between skeletal age and the three selected craniofacial measurements. Statistically significant correlations were also found between the craniofacial measurements and both upper and lower body lengths. The mandibular length had a stronger correlation with the upper body length than with the lower body length. Multiple regression analyses to determine maxillary and mandibular lengths suggested that sex, upper and lower body lengths might be used to determine maxillary length; while skeletal age, upper and lower body lengths might help determine mandibular length. Conclusions: Based on the relatively strong correlation between upper body length and mandibular length, further research in this area may warrant its use as a predictor for mandibular growth modification timing.


RESUMO Objetivo: correlacionar a idade esquelética, a estatura, as alturas corporais superior e inferior, e algumas características específicas do crescimento craniofacial, em uma amostra de indivíduos em crescimento, e delinear o crescimento craniofacial usando regressão multivariada. Métodos: esse estudo transversal retrospectivo foi feito com 447 meninos e meninas negros africanos, com idades entre 8 e 16 anos, atendidos na clínica odontológica de um hospital. A maturação esquelética, em anos, foi determinada a partir de radiografias de mão e punho, usando o atlas de Greulich e Pyle. As medidas craniofaciais representando o comprimento maxilar (Ar-ENA), o comprimento mandibular (Ar-Gn) e a altura facial anterior inferior (ENA-Me) foram calculadas a partir de cefalogramas laterais em oclusão habitual. Os comprimentos corporais foram medidos clinicamente, em centímetros. Resultados: correlações moderadas (r = 0,42 a 0,68) foram observadas entre a idade esquelética e as três medidas craniofaciais selecionadas. Também foram encontradas correlações estatisticamente significativas entre as medidas craniofaciais e as alturas corporais superior e inferior. O comprimento mandibular teve uma correlação mais forte com a altura corporal superior do que com a inferior. As análises de regressão múltipla para determinar os comprimentos maxilar e mandibular sugeriram que o sexo e as alturas corporais superior e inferior podem ser usados para determinar o comprimento maxilar, enquanto a idade esquelética e as alturas corporais superior e inferior podem ajudar a determinar o comprimento mandibular. Conclusões: com base na correlação relativamente forte entre a altura corporal superior e comprimento mandibular, pesquisas adicionais nessa área poderiam justificar seu uso como indicador para o período de modificação do crescimento mandibular.


Subject(s)
Humans , Animals , Male , Female , Child , Adolescent , Skull/growth & development , Body Height , Age Determination by Skeleton/statistics & numerical data , Dental Occlusion , Facial Bones/growth & development , Mandible/growth & development , Maxilla/growth & development , Skull/anatomy & histology , Black or African American , Linear Models , Sex Factors , Cephalometry/statistics & numerical data , Cross-Sectional Studies , Multivariate Analysis , Retrospective Studies , Age Factors , Facial Bones/anatomy & histology , Mandible/anatomy & histology , Maxilla/anatomy & histology
2.
Rev. cuba. estomatol ; 53(1): 43-53, ene.-mar. 2016. ilus, tab
Article in Spanish | LILACS | ID: lil-778910

ABSTRACT

Introducción: en las prácticas médicas, ortopédicas y odontológicas se ha reconocido la importancia de diferenciar la edad cronológica de la edad esquelética o maduración ósea. La estimación del desarrollo óseo a partir de las vértebras cervicales es un método que se ha comprobado como confiable. Objetivo: relacionar los estadios de maduración ósea desde las vértebras cervicales según lo describe Baccetti y la edad cronológica en niños y adolescentes entre 8 y 14 años que asistieron a una clínica odontológica. Métodos: la muestra seleccionada fue probabilística y estuvo conformada por un total de 130 niños de la ciudad de Cali, Colombia. Se tomó una radiografía lateral de cráneo y se evaluaron los estadios de maduración ósea vertebral cervical bajo los estándares del método descrito por Baccetti. Resultados: el coeficiente de correlación entre la edad cronológica y estadios de maduración cervical fue r= 0,69, lo que muestra una moderada relación entre estas dos variables para los niños estudiados. Los estadios de maduración y el sexo explicaron el 50,4 % de la variabilidad de la edad cronológica. Para todos los estadios de maduración se encontraron diferencias significativas (p< 0,001). Los niños varones presentaron mayores estadios iniciales de maduración, aunque no se encontró diferencias significativas en función del sexo (p> 0,05). Conclusiones: Se logra determinar un modelo para explicar la variación de la edad cronológica del niño en función del estadio de maduración ósea cervical y el sexo del niño basado en la relacion positiva moderada entre la edad cronologica y la maduración osea evidenciada hasta el estadio C3(AU)


Introduction: the importance of distinguishing chronological from skeletal age or bone maturation has been recognized in medical, orthopedic and dental practice. Estimation of bone development on the basis of cervical vertebrae has proved to be a reliable method. Objective: relate the stages of bone maturation based on cervical vertebral development as described by Baccetti to the chronological age of children and adolescents aged 8-14 years attending a dental clinic. Methods: probabilistic sampling was used to select 130 children from the city of Cali, Colombia. Lateral skull radiography was performed to evaluate the stages of cervical vertebral bone maturation using the method described by Baccetti. Results: the correlation coefficient between chronological age and cervical maturation stage was r= 0.69, showing a moderate relationship between the two variables for the children studied. Maturation stages and gender accounted for 50.4 % of the variability in chronological age. Significant differences were found for all maturation stages (p< 0.001). Boys had higher initial maturation stages, though significant differences were not found between the genders (p> 0.05). Conclusions: It is possible to determine a model to explain the change in chronological age depending on the stage of cervical bone maturation and sex of the child, based on moderate positive relationship between chronological age and bone maturation evidenced through C3 stadium(AU)


Subject(s)
Humans , Male , Female , Child , Adolescent , Age Determination by Skeleton/statistics & numerical data , Bone Development , Cervical Vertebrae/growth & development , Age Determination by Teeth/methods
3.
Dental press j. orthod. (Impr.) ; 19(4): 58-65, Jul-Aug/2014. tab, graf
Article in English | LILACS | ID: lil-725422

ABSTRACT

INTRODUCTION: This study was conducted with the aim of adapting the methods developed by Martins and Sakima to assess skeletal maturation by cervical vertebrae in the pubertal growth spurt (PGS) curve. It also aimed to test the reliability and agreement between those methods and the method of hand and wrist radiograph when compared two by two and all together. METHODS: The sample comprised 72 radiographs, with 36 lateral radiographs of the head and 36 hand-wrist radiographs of 36 subjects with Down's syndrome (DS), 13 female and 23 male, aged between 8 years and 6 months and 18 years and 7 months, with an average age of 13 years and 10 months. RESULTS AND CONCLUSIONS: Results revealed that adapting the methods developed by Martins and Sakima to assess skeletal maturation by cervical vertebrae in the curve of PGS is practical and useful in determining the stage of growth and development of individuals. The stages of maturation evaluated by cervical vertebrae and ossification centers observed in radiographs of the hand and wrist were considered reliable, with excellent level of agreement between the methods by Hassel and Farman as well as Baccetti, Franchi and McNamara Jr and Martins and Sakima. Additionally, results revealed an agreement that ranged between reasonable to good for the three methods used to assess the skeletal maturation, showing statistical significance. .


INTRODUÇÃO: esse estudo foi realizado com o propósito de adaptar os métodos para avaliação da maturação óssea por meio das vértebras cervicais na curva do Surto de Crescimento Puberal (SCP)de Martins e Sakima, assim como testar a confiabilidade e a concordância existente entre eles e o método para a radiografia de mão e punho, quando comparados 2 a 2, e entre todos, conjuntamente. MÉTODOS: a amostra constou de 72 radiografias, sendo 36 telerradiografias em norma lateral da cabeça e 36 radiografias de mão e punho, de 36 indivíduos com Síndrome de Down (SD), sendo 13 do sexo feminino e 23 do masculino, na faixa etária entre oito anos e seis meses até 18 anos e sete meses, com média de 13 anos e dez meses. CONCLUSÃO: de acordo com os resultados obtidos, concluímos que as adaptações dos métodos para a avaliação da maturação óssea por meio das vértebras cervicais na curva de SPC de Martins e Sakima resultaram em uma ferramenta prática e útil na determinação do estágio de crescimento e desenvolvimento dos indivíduos. Os estágios de maturação avaliados por meio das vértebras cervicais e os centros de ossificação observados nas radiografias de mão e punho foram considerados confiáveis, com excelente grau de concordância entre os métodos de diversos outros autores, e uma concordância de razoável a boa entre os três métodos para avaliação da maturação óssea quando comparados conjuntamente, sendo estatisticamente significativa. .


Subject(s)
Adolescent , Child , Female , Humans , Male , Bone Development/physiology , Carpal Bones/growth & development , Cervical Vertebrae/growth & development , Down Syndrome/physiopathology , Hand Bones/growth & development , Puberty/physiology , Age Determination by Skeleton/methods , Age Determination by Skeleton/statistics & numerical data , Carpal Bones , Cephalometry/methods , Cervical Vertebrae , Down Syndrome , Hand Bones , Osteogenesis/physiology , Reproducibility of Results
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