ABSTRACT
The aim of the present work was to determine the duration of the adolescent peak growth spurt using cervical vertebral maturation analysis in class I and II malocclusion subjects. The study was conducted on a sample which consisted of 154 lateral cephalograms of children and adolescents aged 9-15 years (84 females and 70 males). The evaluation of skeletal maturation stage was performed using a visual morphological analysis of CS3 and CS4 cervical vertebrae. The sagittal skeletal relation was evaluated according to Steiner analysis. Descriptive statistics were used to summarize chronological age in each malocclusion group and for each CS3 and CS4 skeletal maturation stage. Due to a lack of normal distribution, comparisons of CS3 and CS4 age intervals on class I and II subjects were compared using the Mann-Whitney U test for independent samples. The results show that the mean duration of the adolescent peak growth spurt was 10 months between CS3 and CS4 stages in class I malocclusion subjects, whereas in class II malocclusion patients the duration was 6 months. This difference of 4 months was statistically significant (p<0.001). Finally, a clinically significant difference of 4 months in the duration of the adolescent peak growth spurt for class I and II malocclusion subjects was identified.
Subject(s)
Age Determination by Skeleton/methods , Cervical Vertebrae/growth & development , Facial Bones/growth & development , Malocclusion, Angle Class II/physiopathology , Malocclusion, Angle Class I/physiopathology , Adolescent , Cephalometry/methods , Child , Female , Humans , Male , Puberty/physiology , Time FactorsABSTRACT
El objetivo de la investigación fue determinar la duración del pico de crecimiento puberal a través del análisis de maduración de vértebras cervicales en adolescentes con maloclusiónde Clase I y II. La muestra de estudio estuvo constituida por 154 cefalogramaslaterales de niños y adolescentes de 9-15 años de edad (84 mujeres y 70 hombres). Se realizó la evaluación de la etapa de maduración de las vértebras cervicales mediante el análisismorfológico visual (CS3 y CS4). Se evaluó la relación esquelética sagital de acuerdo al método de Steiner. Se realizóla estadística descriptiva para la edad cronológica en cada grupo de maloclusión y para cada etapa de maduración esquelética CS3 y CS4. Debido a la falta de distribución normalpara las comparaciones de los intervalos de edad en CS3 y CS4 en sujetos de Clase I y II se utilizó la prueba de U deMann -Whitney para muestras independientes. Los resultados muestran que el promedio de duración del pico máximo de crecimiento puberal fue de 10 meses entre las etapas CS3 y CS4 en el grupo de maloclusiónde Clase I, mientras que en el grupo de maloclusión de Clase II la duración fue de 6 meses. Esta diferencia de 4 meses fue estadísticamente significativa(p< 0.001). Finalmente se identificó una diferencia clínicamente significativade 4 meses en la duración del período del pico de crecimiento puberal entre los adolescentes con maloclusión de Clase I y II...
Subject(s)
Humans , Male , Adolescent , Female , Child , Cephalometry/methods , Age Determination by Skeleton/methods , Malocclusion, Angle Class I , Malocclusion, Angle Class II , Puberty/physiology , Cervical Vertebrae , Age and Sex Distribution , Age Factors , Data Interpretation, StatisticalABSTRACT
The aim of the present work was to determine the duration of the adolescent peak growth spurt using cervical vertebral maturation analysis in class I and II malocclusion subjects. The study was conducted on a sample which consisted of 154 lateral cephalograms of children and adolescents aged 9-15 years (84 females and 70 males). The evaluation of skeletal maturation stage was performed using a visual morphological analysis of CS3 and CS4 cervical vertebrae. The sagittal skeletal relation was evaluated according to Steiner analysis. Descriptive statistics were used to summarize chronological age in each malocclusion group and for each CS3 and CS4 skeletal maturation stage. Due to a lack of normal distribution, comparisons of CS3 and CS4 age intervals on class I and II subjects were compared using the Mann-Whitney U test for independent samples. The results show that the mean duration of the adolescent peak growth spurt was 10 months between CS3 and CS4 stages in class I malocclusion subjects, whereas in class II malocclusion patients the duration was 6 months. This difference of 4 months was statistically significant (p<0.001). Finally, a clinically significant difference of 4 months in the duration of the adolescent peak growth spurt for class I and II malocclusion subjects was identified.