Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 2.754
Filter
1.
Rev. Ciênc. Méd. Biol. (Impr.) ; 20(4): 543-550, fev 11, 2022. tab
Article in Portuguese | LILACS | ID: biblio-1359315

ABSTRACT

Introdução: fatores de risco gestacionais podem culminar na prematuridade neonatal, que constitui um grande desafio para a saúde pública em todo o mundo, sendo uma das principais causas de mortes neonatais. Objetivo: analisar uma população de prematuros, internados em unidades neonatais em relação ao estado nutricional e à alimentação recebida. Metodologia: delineamento observacional retrospectivo, com 125 recém-nascidos prematuros de uma maternidade pública do Tocantins. Sexo, idade gestacional ao nascer, peso, comprimento e perímetro cefálico ao nascer, durante a internação e na alta, ganho de peso diário, tempo de internação e tipo de dieta recebida foram analisados por meio dos testes de Mann-Whitney, Qui-quadrado, Exato de Fisher e t-Student, Mc Nemar, Wilcoxon e Friedman, a 5% de significância, no Statistical Package for Social Sciences 20.0. Resultados: houve predomínio do sexo masculino na amostra. A prevalência de crianças muito prematuras foi maior na unidade de cuidados convencionais (UcinCo), enquanto a prevalência de crianças com muito baixo peso ao nascer foi maior na unidade de terapia intensiva (UTIN). O tempo de internação foi menor na UcinCo, sendo este menos da metade do tempo de internação na UTIN. O peso à alta e o ganho de peso foram maiores na UTIN. Observou-se declínio do estado nutricional nas duas unidades. A utilização de fórmulas comerciais foi maior na UcinCo, enquanto predominou a oferta de leite humano na UTIN. Conclusão: independentemente do tipo de dieta recebida e da unidade de terapia, as crianças declinaram de estado nutricional durante a internação.


Introduction: gestational risk factors can culminate in neonatal prematurity, which is a major public health challenge worldwide, being one of the leading causes of neonatal deaths. Objective: to analyze a population of preterm infants admitted to neonatal units in relation to nutritional status and the food received. Methodology: retrospective observational design with 125 premature newborns from a public maternity in Tocantins. Gender, gestational age at birth, weight, length and head circumference at birth, during hospitalization and at discharge, daily weight gain, length of stay and type of diet received were analyzed using the Mann-Whitney, Chi-square, Fisher exact and Student t, Mc Nemar, Wilcoxon and Friedman tests, at 5% significance, in the Statistical Package for Social Sciences 20.0. Results: there was a predominance of males in the sample. The prevalence of very premature children was higher in the conventional care unit (CCU), while the prevalence of very low birth weight children was higher in the intensive care unit (ICU). Length of stay was shorter in the CCU, which was less than half of the length of stay in the ICU. Weight at discharge and weight gain were higher in the ICU. There was a decline in nutritional status in both units. The use of commercial formulas was higher in CCU, while the supply of human milk in the ICU predominated. Conclusion: regardless of the type of diet received and the therapy unit, the children declined their nutritional status during hospitalization.


Subject(s)
Humans , Male , Female , Infant, Newborn , Sex , Body Weight , Breast Feeding , Infant, Premature , Intensive Care Units, Neonatal , Cephalometry , Gestational Age , Retrospective Studies , Observational Study
3.
Rev. Círc. Argent. Odontol ; 79(230): 5-15, dic. 2021. ilus
Article in Spanish | LILACS | ID: biblio-1358074

ABSTRACT

Desde la antigüedad la belleza y la armonía facial han sido objetivos que tanto pintores como escultores, médicos y las personas tratan de lograr. Los rostros han sido estereotipados y es así como las caras proporcionadas tanto en alto como en ancho con perfiles que son rectos o levemente convexos son los que se asocian a bondad, generosidad, personas con luz interior, princesas y son las "buenas de las películas". Pero ¿qué sucede con aquellos rostros cóncavos, con tercios inferiores ya largos o cortos?… a ellos les ha tocado la peor parte, son los malos, los oscuros, los "villanos de las películas". Objetivos La finalidad de este trabajo es acercar a los colegas ortodoncistas una opción de tratamiento en clase III esqueletal, cuando el camuflaje ortodóncico no alcanza para resolver el crecimiento alterado entre el maxilar superior y el maxilar inferior (AU)


Beauty and facial harmony have been, since the beginning of humanity, a target for artists, painters, sculptores, and even people and doctors to accomplish. There is a stereotype of beauty: faces with proportional dimensions both in height and length, with straight profiles or somehow convex are associated with kindness, generosity and inner beauty. We can see this in movies where the heroes, the princesses, the "good guys" are portrayed with these types of faces. And what happens with people with concave faces, long or short inferior thirds? They are doomed to be the evil, the dark and "the villains" (AU)


Subject(s)
Humans , Male , Adolescent , Esthetics, Dental , Face/anatomy & histology , Orthognathic Surgery , Malocclusion, Angle Class III/surgery , Patient Care Planning , Argentina , Cephalometry , Genioplasty , Maxillofacial Development
4.
Rev. Círc. Argent. Odontol ; 79(230): 29-32, dic. 2021. tab, graf
Article in Spanish | LILACS | ID: biblio-1358700

ABSTRACT

Este trabajo de investigación tiene como finalidad comparar la inclinación del incisivo inferior pre y post-tratamiento en pacientes tratados ortodóncicamente con técnicas Roth y técnica Damon a los cuales no se les realizó exodoncias. El grupo de estudio estuvo conformado por 150 pacientes adultos con dentición permanente completa que han sido atendidos en el Círculo Argentino de Odontología. Para medir la inclinación se utilizó la fórmula de Tweed: ángulo IMPA, eje axial del incisivo inferior con el plano mandibular. Los valores tomados de los trazados pre y post-tratamiento fueron sometidos a un test de Student apareado utilizando el programa Infostat v 2010. Se encontró una diferencia significativa en la inclinación axial del incisivo inferior post tratamiento cualquiera sea la técnica utilizada, aumenta en ambos casos. No se realizó discriminación de torques (Roth ­ 1°, Damon torque estándar ­ 3°, Damon bajo torque - 11°) (AU)


This research work aims to compare the inclination of the lower incisor before and after treatment in patients treated orthodontically with Roth techniques and Damon technique to which no exodontics were performed. The study group consisted of 150 adult patients with complete permanent dentition who have been treated in Circulo Argentino de Odontología. To measure the inclination the Tweed formula was used: IMPA angle, axial axis of the lower incisor with the mandibular plane. The values taken from the pre and post-treatment plots were subjected to a Student test paired using the Infostat v 2010 program. A significant difference was found in the axial inclination of the lower incisor post treatment whatever the technique used, it increases in both cases. No torques discrimination was performed (Roth - 1 °, Damon standard torque - 3 °, Damon under torque - 11 °) (AU)


Subject(s)
Humans , Male , Female , Orthodontics, Corrective/methods , Cephalometry/methods , Orthodontic Brackets , Incisor , Argentina , Societies, Dental , Statistical Analysis , Retrospective Studies , Analysis of Variance , Longitudinal Studies , Mandible
5.
Prensa méd. argent ; 107(8): 423-429, 20210000. ilus
Article in English | LILACS | ID: biblio-1358770

ABSTRACT

El propósito del estudio fue analizar la dinámica de los cambios relacionados con la edad de las estructuras craneofaciales de acuerdo con los parámetros antropométricos en hombres y mujeres de 17 a 24 años, y determinar la correlación, definida por análisis antropométrico, entre las formas de morfología craneofacial y los tipos de anomalías dento-maxilares. Materiales y métodos: Se realizó un examen antropométrico de 851 individuos (418 hombres y 433 mujeres) de 17 a 24 años y la evaluación de 45 mediciones entre puntos de referencia de tejidos blandos. Además, se realizó una valoración odontológica general, que incluyó la clasificación de las anomalías dentomaxilares. Resultados: Se detectó que el ancho de la cabeza, el largo de la cabeza, así como el ancho de la mandíbula y el ancho morfológico facial en las hembras alcanzan valores máximos de crecimiento a la edad de 20 años. Además, se obtuvieron datos que indicaron la continuación del crecimiento de los parámetros antropométricos craneofaciales mencionados anteriormente en los hombres durante el período de transición de la adolescencia a la edad adulta. Conclusión: la mordida profunda distal es la anomalía dento-maxilar (DMAn) más común en hombres y mujeres bielorrusos de 17 a 24 años. Junto con esto, la frecuencia de ocurrencia de maloclusión de mordida profunda distal en individuos con morfología craneofacial dolicocefálica es mayor en hombres y mujeres en comparación con otras formas de morfología craneofacial. La mordida profunda distal se acompaña de la disminución de los parámetros antropométricos de la altura facial, en comparación con la mordida mesial y abierta en la que hay un aumento estadístico. Además, se observa una disminución estadística en el valor de la profundidad facial inferior en individuos diagnosticados con mordida distal, en comparación con individuos con mordida mesial y normal. Estos resultados obtenidos del análisis antropométrico podrían ser útiles en el diagnóstico de anomalías dentofaciales y dento-maxilares, y en la simulación de resultados de tratamiento estéticamente estables.


The purpose of the study was to analyze the dynamics of age-related changes of craniofacial structures according to anthropometric parameters in males and females aged 17­24 years, and to determine the correlation, defined by anthropometric analysis, between forms of craniofacial morphology and the type of dento-maxillary anomalies. Materials and Methods: An anthropometric examination of 851 individuals (418 males and 433 females) aged 17­24 years and the evaluation of 45 measurements between soft tissue landmarks was performed. In addition, general dental assessment was conducted, which included the classification of the dento-maxillary anomalies. Results: It was detected that the head width, head length, as well as the mandible width, and the morphological facial width in females reach growth peak values at the age of 20 years. Furthermore, data was obtained which indicated growth continuation of the stated above craniofacial anthropometric parameters in males during the transitional period from adolescence to adulthood. Conclusion: Distal deep bite is the most commonly prevailed dento-maxillary anomalies (DMAn) in Belarusian men and women aged 17­24 years. Along with this, the frequency of distal deep bite malocclusion occurrence in individuals with dolichocephalic craniofacial morphology is higher in men and women when compared to other forms of craniofacial morphology. Distal deep bite is accompanied by the decrease of facial height anthropometric parameters, when compared to mesial and open bite in which there is a statistical increase. Moreover, a statistical decrease in the value of the inferior facial depth is observed in individuals diagnosed with distal bite, when compared to individuals with mesial and normal bite. These obtained results from anthropometric analysis could be useful in diagnosis of dentofacial and dento-maxillary anomalies, and in the simulation of aesthetically stable treatment results


Subject(s)
Humans , Adolescent , Adult , Body Weights and Measures , Anthropometry , Cephalometry , Maxillofacial Abnormalities , Open Bite/physiopathology , Head/growth & development , Age Factors
6.
Rev. cient. odontol ; 9(2): e060, abr.-jun. 2021. ilus, tab
Article in Spanish | LIPECS, LILACS, LIPECS | ID: biblio-1254599

ABSTRACT

Objetivo: Comparar el ángulo de la guía condílea sagital obtenida del registro radiográfico y clínico en pacientes dentados. Materiales y métodos: La muestra estuvo conformada por un grupo único de estudio de 32 pacientes, en el que se evaluó la radiografía lateral estricta y los registros posicionales: en relación céntrica, registro protrusivo a 5 mm en lateralidad derecha y registro protrusivo a 5 mm en lateralidad izquierda. Con el registro posicional del arco facial se articuló el modelo superior, con el registro posicional en relación céntrica se articuló el modelo inferior, con los registros laterales protrusivos de los lados derecho e izquierdo se obtuvo la medida del ángulo de la guía condílea sagital para la programación del articulador semiajustable. El plan estadístico en la presente investigación utilizó el programa SPSS versión 24, la normalidad fue evaluada usando el test de Shapiro-Wilk, también se realizaron las pruebas de T de Student y correlación de Pearson. Resultados: Se determinó estadísticamente que el género y la edad influyen en la medida del ángulo de la guía condílea sagital. El método radiográfico presentó un ángulo de guía condílea de 35,69 ±5,18 y con el método clínico fue 35,69 ± 5,16 (p > 0,05). La prueba de correlación de Pearson sí mostró una correlación importante entre ambos métodos r = 0,948, p < 0,001. Conclusiones: Existe alta correlación en las medidas obtenidas del ángulo de la guía condílea sagital con los registros radiográficos y clínicos; esta concordancia permitiría reemplazar un método por el otro. (AU)


Objective: To compare the angle of the sagittal condylar guidance obtained from the radiographic and clinical records of dentate patients. Materials and Methods: The sample consisted of 32 patients in whom strict lateral radiography and positional records were performed: in centric relation, protrusive recording 5 mm in right laterality and protrusive recording 5 mm in left laterality. With the positional registration of the facebow, the upper model was articulated, while the lower model was articulated with the positional registration in centric relation, and with the protrusive lateral registrations on the right and left side the condylar guidance was obtained for programming the semi-adjustable articulator. Statistics were performed with the SPSS program version 24 in Spanish. Normality was evaluated using the Shapiro-Wilk test, for data with normal distribution, and the Student's T test and Pearson's correlation were performed in descriptive statistics. Results: The statistical analyses showed that gender and age influence the angle measurement of the sagittal condylar guide. The radiographic method presented a condylar guide angle of 35.69 ± 5.18, being 35.69 ± 5.16 with the clinical method (p> 0.05). Pearson's correlation test showed an important correlation between the two methods (r = 0.948, p <0.001). Conclusions: There is a high correlation in the measurements obtained from the angle of the sagittal condylar guide and the radiographic and clinical records, indicating that both methods are effective. (AU)


Subject(s)
Humans , Male , Female , Adult , Young Adult , Radiography, Panoramic , Cephalometry , Dental Occlusion , Mandibular Condyle , Epidemiology, Descriptive , Cross-Sectional Studies , Retrospective Studies , Observational Studies as Topic
7.
Braz. dent. j ; 32(3): 116-126, May-June 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1345509

ABSTRACT

Abstract This 2-year-follow up study compared and evaluated the stability of early anterior open bite (AOB) treatment based on different appliances. Children from 7 to 10 years with Angle Class I, AOB larger than 1.0 mm and fully erupted maxillary and mandibular permanent central incisors were eligible. The initial sample was 99 patients distributed, by simple randomization, into four groups: BS (bonded spurs), CC (chincup), FPC (fixed palatal crib) and RPC (removable palatal crib). Cephalometric analysis was performed at baseline (T1), final (T2) and 2-year post-treatment (T3) by taking the overbite measurements as the main outcome. Blinding was possible to cephalometric analysis. At T3, with dropouts, there were 63 individuals, being BS (n=15; overbite 0.19 mm; 11.54 years; 10 female (F)/5 male (M)); CC (n=11; overbite -0.19 mm; 11.41 years; 8 F/3 M); FPC (n=21; overbite 1.23 mm; 11.44 years; 15 F/6 M) and; RPC (n=16; overbite 0.73 mm; 11.67 years; 6 F/10 M). Changes in dentoskeletal variables and breaking deleterious oral habits during the follow up were statically analyzed with p<.05. Mandibular skeletal linear measurements and vertical dental components have gradually increased with age, manly at pubertal growth spurt and at the establishment of permanent dentition after treatment. Incisor teeth extrusion had impact on AOB correction and stability in 4 groups, which recorded a 1.15 mm-improvement of overbite after treatment (T3-T2). The experimental appliances were effective with stable results, being FPC the device recorded the highest AOB correction and the lowest patient withdrawal rate.


Resumo Os objetivos do presente estudo foram comparar e avaliar a estabilidade do tratamento precoce da mordida aberta anterior (MAA) com diferentes dispositivos. A amostra inicial foi composta por 99 pacientes randomizados em quatro grupos experimentais: BS - esporões colados; CC - mentoneira; FPC - grade palatina fixa; RPC - grade palatina removível. Análise cefalométrica foi realizada para avaliar os dados do período inicial (T1), final do tratamento (T2) e 2 anos após tratamento (T3), sendo a variável overbite o desfecho principal. Em T3, após perdas de seguimento, haviam 63 indivíduos, sendo BS (n=15; overbite 0.19 mm; 11.54 anos; 10 Feminino (F)/5 Masculino (M)); CC (n=11; overbite -0.19 mm; 11.41 anos; 8 F/3 M); FPC (n=21; overbite 1.23 mm; 11.44 anos; 15 F/6 M) e; RPC (n=16; overbite 0.73 mm; 11.67 anos; 6 F/10 M). Comparações das alterações nas variáveis dentoesqueléticas e abandono de hábitos bucais deletérios durante o tempo de acompanhamento foram estatisticamente analisados com p<.05. Medidas esqueléticas lineares mandibulares e componentes verticais aumentaram gradualmente com a idade, principalmente com o surto de crescimento puberal e estabelecimento da dentição permanente no pós-tratamento. O overbite foi significantemente melhorado durante o tratamento, permanecendo estável com alterações positivas. A extrusão dos incisivos impactou na correção da MAA e estabilidade nos 4 grupos, que registraram uma melhora de 1.15 mm no pós-tratamento (T3-T2). Com suas limitações, todos dispositivos experimentais foram efetivos e mostraram resultados estáveis no tratamento precoce da MAA, sendo que a FPC apresentou a maior correção da MAA e o menor índice de desistência.


Subject(s)
Humans , Male , Female , Child , Open Bite/therapy , Malocclusion, Angle Class II , Cephalometry , Follow-Up Studies , Mandible
8.
Rev. argent. radiol ; 85(2): 33-40, abr. 2021. tab, graf
Article in Spanish | LILACS, BINACIS | ID: biblio-1288197

ABSTRACT

Resumen Objetivo: Evaluar la diferencia del trazado cefalométrico manual con el digital en radiografías laterales de cráneo. Materiales y métodos: Inicialmente se realizó un piloto para calibrar al investigador principal, en donde se analizaron 10 radiografías pertenecientes a cinco pacientes del Servicio de Radiología del Centro Odontológico de nuestra institución para evaluar la concordancia entre los dos evaluadores y establecer el tamaño de la muestra. Finalmente, se analizaron 78 radiografías cefalométricas de 39 pacientes, en las que se realizó el trazado cefalométrico de Steiner manual y digital. Esas radiografías se analizaron en una escala 1:1 y posteriormente se evaluó la diferencia de las mediciones mediante el análisis univariado, se determinó en mediana e intervalo intercuartil por separado. En el análisis bivariado, se aplicó la prueba de signo de rangos de Wilcoxon y muestras pareadas para determinar la diferencia de las mediciones cefalométricas de Steiner entre el tipo del análisis cefalométrico. El nivel de significancia se fijó en p < 0,05 y confiabilidad al 95%, respectivamente. Resultados: No hubo diferencia significativa en la mayoría de las mediciones hechas de manera manual y digital, siendo el ángulo interincisal la única medición angular en la cual hubo diferencia significativa al obtener un resultado de p = 0,002. Mientras tanto, en las mediciones lineales, la única medición en la que hubo diferencia significativa fue en el segmento incisivo inferior - NB con p = 0,005. Conclusión: No se encuentran diferencias significativas entre el trazado cefalométrico manual y el digital. No obstante, es importante tener en cuenta que la muestra o población evaluada es reducida para definir conclusiones.


Abstract Objective: To evaluate the difference of the manual cephalometric tracing with the digital tracing on lateral cranial radiographs. Materials and Methods: Initially, a pilot study was carried out to calibrate the principal investigator, where 10 radiographs belonging to 5 patients of the Radiology Service of the Dental Center, were analyzed to evaluate the intraclass concordance between the two evaluators. To establish the size of the sample, finally, 78 cephalometric radiographs of 39 patients were analyzed, in which the manual and digital Steiner cephalometric tracing was performed. These radiographs were analyzed on a 1: 1 scale and then the difference of the measurements was evaluated using the univariate analysis, which was determined in the median and interquartile range, separately. In the bivariate analysis, the Wilcoxon rank sign test and paired samples were applied to determine the difference of Steiner's cephalometric measurements between the cephalometric analysis type. The level of significance was set at p < 0.05 and 95% reliability, respectively. Results: There was no significant difference in most of the measurements made manually and digitally. The interincisal angle the only angular measurement in which there was a significant difference when obtaining a result of p = 0.002, while, in the linear measurements, the only measurement in which there was significant difference was in the lower incisor segment - NB with p = 0.005. Conclusion: There is no significant difference between manual and digital cephalometric tracing, nevertheless it is important to keep in mind that the simple or population evaluated is reduced to define conclusions.


Subject(s)
Humans , Adolescent , Adult , Middle Aged , Cephalometry , Radiography, Dental, Digital , Patients , Population , Radiology , Research Personnel , Skull , Measurements, Methods and Theories , Radiography, Dental , Pilot Projects , Organizations , Sample Size , Materials , Incisor , Methods
10.
Article in English | WPRIM | ID: wpr-922592

ABSTRACT

OBJECTIVES@#At present, the research on clear aligner of molar distalization mainly focuses on the upper jaw, while the research on mandibular molars is few.This study aims to evaluate the therapeutic effect of mandibular molars distalization with clear aligner via cone beam CT (CBCT) and Dolphin software.@*METHODS@#Twenty cases of mandibular molars with clear aligner were included according to the inclusion and exclusion criteria. CBCT was taken before treatment (T0) and when the first molar was moved in place (T1). Dolphin software was used to measure the effectiveness of molar distalization. Three-dimensional changes in direction and the impact on the incisors and facial soft and hard tissues were evaluated.@*RESULTS@#The effective rates of crown and root distalization of the second and first mandibular molars were 74%, 49%, and 71%, 47%, respectively. The second and first molars were both the distal buccal cusp with the largest distalization [(2.15 ± 0.91) mm and (1.85±1.09) mm], respectively, with significant difference between the T0 and T1 (@*CONCLUSIONS@#Clear aligner can effectively move mandibular molars farther, the crown is more effective than the root, and it is tilted. The second mandibular molar is more effective than the first mandibular molar in its distant displacement and three-dimensional changes. Molar distalization causes minor changes in mandibular incisors and facial soft and hard tissues.


Subject(s)
Cephalometry , Maxilla , Molar , Orthodontic Appliances, Removable , Tooth Movement Techniques
11.
Article in English | WPRIM | ID: wpr-922410

ABSTRACT

OBJECTIVES@#To assess the growth of preterm infants up to a corrected age of 24 months, and to understand the growth trend and pattern of preterm infants.@*METHODS@#A preterm infant follow-up database was established based on the Internet Plus follow-up system. A total of 3 188 preterm infants who were born from April 2018 to April 2021 were enrolled. Their length, weight, and head circumference were recorded at birth and at the corrected ages of 1, 3, 6, 12, 18, and 24 months. The preterm infants were grouped by perinatal factors. The growth curves of these infants were plotted and compared with the International Fetal and Newborn Growth Consortium for the 21st Century (INTERGROWTH-21st) standard and World Health Organization (WHO) standard.@*RESULTS@#The weight, length, and head circumference curves of each group of preterm infants grouped by various perinatal factors all rose rapidly within the corrected age of 6 months, but the growth rate slowed down after the corrected age of 6 months. Based on the actual age for the groups of preterm infants with different gestational ages (<28 weeks, 28-31@*CONCLUSIONS@#The physical growth rate of preterm infants is faster within the corrected age of 6 months, and the growth rate slows down after the corrected age of 6 months. Preterm infants with a smaller gestational age need longer time to catch up in weight and head circumference. More attention should be paid to the physical growth of extremely preterm infants, extremely low birth weight infants, and small-for-gestational-age infants.


Subject(s)
Cephalometry , Child, Preschool , Female , Gestational Age , Humans , Infant , Infant, Extremely Low Birth Weight , Infant, Newborn , Infant, Premature , Infant, Small for Gestational Age , Pregnancy
12.
Article in English | WPRIM | ID: wpr-879963

ABSTRACT

To evaluate the therapeutic effect of using micro-implant anchorage (MIA) to rotate the functional occlusal plane (FOP) counterclockwise. Forty skeletal class Ⅱ high-angle patients who had completed orthodontic treatment were enrolled, including 20 patients treated with MIA orthodontic system (MIA group) and the other 20 patients treated with traditional sliding straight wire appliance (control group). Cephalometric measurements on the lateral cranial radiographs before and after treatment were performed, all acquired data were statistically analyzed with SPSS 26.0. At the end of treatment, MIA group obtained better effect of FOP and mandibular plane counter-clockwise rotation than the control group. In the MIA group, the average change of FOP-frankfort horizontal plane (FH), FOP-SN and mandibular plane angle (MP-FH) angle was -4.5(-7.3, -3.7)°, (3.3)° and -1.7(-3.0, -0.9)°, respectively. In the control group, the average change of FOP-FH, FOP-SN and MP-FH angle was -0.1(-4.1, 3.0)°, (-0.1±5.1)° and -0.4(-2.4, 0.7)°, respectively. There was significant difference between the change of the two groups (all <0.05). Compared with the traditional sliding straight wire appliance, counterclockwise rotation of FOP can be more effectively reversed by using MIA orthodontic system, and the MP-FH can be reduced as well.


Subject(s)
Cephalometry , Dental Occlusion , Humans , Malocclusion, Angle Class II/therapy , Mandible , Maxilla , Treatment Outcome
13.
Article in English | WPRIM | ID: wpr-879962

ABSTRACT

To establish an intelligent cervical vertebra maturity assessment system, and to evaluate the reliability and clinical value of the system. Sixty children aged were recruited in the study. Lateral cephalometric radiograph and cone beam CT (CBCT) were taken at the same period. Based on the CBCT data, the system automatically extracted the patient's facial area through Otsu's method, intercepted the sagittal plane by three-dimensional least squares method, captured the second to fourth cervical vertebrae by superpixel segmentation. And then selected points were marked automatically through morphological algorithm and manual method. Consistency test was performed on the two sets of data to compare the reliability of automated cervical morphology capture. According to the parameters of morphological identification, positioning and staging algorithms were designed to form the intelligent cervical vertebra maturity assessment system. The cervical vertebra maturity was also judged manually on the lateral cephalometric radiograph. The weighted Kappa test and the Gamma correlation coefficient were subsequently applied to evaluate the consistency and correlation. The results showed that the cervical vertebra features automatically captured based on CBCT data had a high accuracy on the overall morphological recognition. In the prediction of 8 inflection points out of 13 points, there was no significant difference between automatic and manual method on both X and Y axes (all >0.05). The assessment results of the cervical vertebra maturity of the intelligent system had strong consistency and correlation with the manual recognition results (weighted Kappa value=0.877, Gamma value=0.991, both <0.05). The intelligent cervical vertebrae maturity assessment system based on CBCT data established in this study presents reliable outcome and high degree of automation, indicating that the system may be used clinically.


Subject(s)
Cephalometry , Cervical Vertebrae/diagnostic imaging , Child , Cone-Beam Computed Tomography , Humans , Radiography , Reproducibility of Results
14.
Article in English | LILACS, BBO | ID: biblio-1351205

ABSTRACT

ABSTRACT Objective: To establish the cephalometric (Ceph.) norm by Ceph. for orthognathic surgery (COGS) analysis for Saudi population. Material and Methods: 500 adult Saudi samples (250 males and 250 females) with the age range of 18-30 years old were selected for this study. The selections of samples were based on a normal occlusal relationship, no history of facial trauma and no previous orthodontic treatment. Lateral Ceph. radiographs were tracing by CASSOS software and analyzed by SPSS software according to COGS analysis. Results: Significant differences were showed between the Saudi males and females on most of the Ceph. parameters. The Saudi males had a convex facial profile with chin prominent and more bimaxillary protrusion, upper and lower lip protrusion than the Saudi females. Conclusion: This study evaluated the craniofacial morphological difference between the male and the female population in Saudi Arabia by using COGS analysis. The finding of this study will help for better diagnosis of orthodontic and orthognathic surgical treatment planning and identify the morphological facial characteristics of Saudi patients.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Orthodontics , Saudi Arabia , Cephalometry/instrumentation , Diagnostic Techniques and Procedures/instrumentation , Orthognathic Surgery/instrumentation , Radiography, Dental/instrumentation , Data Interpretation, Statistical
15.
São Paulo; s.n; 2021. 92 p.
Thesis in Portuguese | LILACS | ID: biblio-1293310

ABSTRACT

Introdução: Após o nascimento de um bebê, são realizadas medidas antropométricas, como peso, comprimento e perímetro cefálico. Especificamente o peso de nascimento é considerado como diretamente relacionado às características do futuro crescimento e desenvolvimento da criança. A partir de referenciais já publicados, de acordo com a Idade Gestacional (IG), esses parâmetros antropométricos são avaliados como adequados ou não e podem ser importantes preditores da saúde e dos cuidados que o recém-nascido (RN) irá demandar. Há mais de meio século, curvas referenciais de crescimento têm sido propostas e utilizadas. Atualmente, estão entre as mais utilizadas a proposta por Fenton e Kim e a produzida pelo estudo INTERGROWTH-21st. Na literatura encontra-se uma diversidade de estudos comparando essas curvas de crescimento, analisando sua adequação. Partindo dessas premissas e visando contribuir para este tipo de análise e discussão acerca dos referenciais de crescimento intrauterino, mormente para os recém-nascidos de termo, que representam a grande maioria dos nascimentos, optou-se por avaliar os dados de antropometria ao nascimento de um universo de recém-nascidos de termo, resultantes de gestações de baixo risco, filhos de mães adultas jovens residentes em um município brasileiro de elevado Índice de Desenvolvimento Humano e com cobertura praticamente universal de saneamento básico. Objetivo: Analisar as medidas antropométricas ao nascimento de RN a termo, nascidos de mães adultas jovens, em uma cidade de elevado IDH, no período de maio de 2015 a março de 2018. A partir desses dados, buscou-se compará-los com as curvas propostas pelos estudos de Fenton e Kim e INTERGROWTH-21st, incluindo a mediana e os percentis 10 e 90 de cada parâmetro, segundo o sexo e IG. Metodologia: Estudo descritivo e analítico, quantitativo, com coleta retrospectiva de dados provenientes do Hospital Universitário de Taubaté, das crianças nascidas entre maio de 2015 e março de 2018. Dados foram tabulados e analisados, calculadas medidas de tendência central e dispersão por grupos de análise. Calculadas curvas de regressão não linear e, posteriormente, comparadas com os referenciais com escore Z. Resultados: No período elegido ocorreram 6757 nascimentos vivos; destes, foram incluídos no estudo 3908. Verificou-se um predomínio do sexo feminino e em relação à IG, a maioria foi de RN de termo pleno com predomínio de partos vaginais, exceto para os termos tardios. Quanto ao peso, mais de 90% com peso adequado para a IG. O incremento de peso foi de aproximadamente 100g por semana e no comprimento de 0,4 a 0,5cm por semana. Ao serem comparados os parâmetros antropométricos, em relação à via de parto, encontramos bebês mais leves, menores em comprimento e perímetro cefálico, para via vaginal. Em relação ao sexo, ambos se concentraram com IG de termo pleno, o sexo masculino com valores ligeiramente maiores nos três parâmetros analisados. Na comparação com o referencial de Fenton e Kim, o peso e PC apresentaram valores acima do referencial na 37ª semana e a seguir valores abaixo, enquanto o comprimento desde a 37ª semana apresentou-se abaixo do referencial. Quando comparado com os gráficos do INTERGROWTH-21st, o peso apresenta-se com valores maiores que o referencial até 40ª semana em todos os percentis, diferente do comprimento, onde praticamente todos os valores estão abaixo do referencial, os dados do PC, nos percentis 50 e 90, apresentam-se maior que o referencial, em quase todas as IG. Conclusão: RN de termo, de gestações de baixo risco de mães adultas jovens, apresentam valores de antropometria ao nascimento diferentes dos propostos pelos referenciais de Fenton e Kim e do estudo INTERGROWTH-21st. No que se refere à tendência de evolução dos escores Z (percentis) entre as idades gestacionais referidas como de termo (37ª até 41ª semana), tanto para o peso quanto para o comprimento e o perímetro craniano ao nascer, ela é sempre decrescente, indicando uma velocidade de crescimento menor do que a previsível a partir das curvas de referência. Encontraram-se menores diferenças entre os valores absolutos de peso, de comprimento e de perímetro craniano ao nascer, com os respectivos valores indicados pelo referencial do INTERGROWTH 21st. Ficando evidente a impossibilidade de existir uma única curva referencial universal, sendo necessária uma compreensão crítica para a sua utilização. Os resultados deste estudo não invalidam os referenciais, mas podem contribuir para que sejam utilizados de forma mais adequada e consistente.


Introduction: Anthropometric measures, such as weight, length and cephalic perimeter, are performed after the birth of a baby. In particular, birth weight is considered causally related to the characteristics of future child growth and development. Based on already published references, according to the Gestational Age (GA), these anthropometric parameters are assessed as appropriate or not and may be important predictors of the health and care that the newborn (NB) will demand. More than half a century ago, reference growth curves have been proposed and used. Currently, they are among the most used proposals by Fenton and Kim and those produced by study INTERGROWTH-21st. In the literature there is a diversity of studies comparing these growth curves, analyzing their adequacy. Based on these assumptions and aiming to contribute to this type of analysis and discussion about the intrauterine growth references, particularly for the newborn at term, which represent most births, it was chosen to evaluate anthropometric data at the birth of a universe of newborn at term, result of low-risk gestation, children of young adult mothers resident in a Brazilian municipality with high Human Development Index and with almost whole coverage of sanitation. Objective: Analysis of anthropometric measures at birth of NB at term, born of young adult mothers, in a city with high HDI, from May 2015 to March 2018. Based on these data, it was sought to compare them with the curves proposed by the studies of Fenton and Kim and INTERGROWTH-21st, including the median and percentiles 10 and 90 of each parameter, according to gender and GA. Methodology: A quantitative descriptive and analytical study with retrospective collection of data from Hospital Universitário de Taubaté of children born between May 2015 and March 2018. Data were tabled and analyzed, central tendency measurements and dispersion by analysis groups were calculated. Calculated non-linear regression curves and then compared to the Z-score references. Results: 6757 live births occurred in the selected period; of these, were included in study 3908. There was a predominance of female sex and in relation to GA, most of them were full-term NBs with predominance of vaginal births, except for late term. As for weight, more than 90% with appropriate weight for GA. Weight gain was approximately 100g per week and in length from 0.4 to 0.5cm per week. When comparing the anthropometric parameters in relation to the delivery route, we found milder, smaller babies in length and cephalic perimeter, for vaginal route. Regarding sex, both concentrated on full-term GA, male with slightly higher values in the three parameters analyzed. Compared to the Fenton and Kim reference, weight and PC presented values above the reference at week 37 and below, while length from week 37 was below the reference. When compared to the graphs of INTERGROWTH-21st, the weight is greater than the reference up to week 40 in all percentages, different from the length, where virtually all values are below the reference, the PC data in percentiles of 50 and 90 are greater than the reference, in almost all GAs. Conclusion: NB at term, low-risk pregnancies of young adult mothers, - present anthropometric values at birth different from those proposed by Fenton and Kim references and the INTERGROWTH-21st study. Regarding the trend of evolution of Z-scores (percentiles) between the gestational ages referred to as term (37th to 41st weeks), For both weight and cranial length and perimeter at birth, it is always decreasing, indicating a growth rate lower than predicted from the reference curves. There were smaller differences between absolute values of weight, length and cranial perimeter at birth, with the respective values indicated by the reference of INTERGROWTH 21st. It is evident that there is no single universal reference curve, A critical understanding is needed for its use. The results of this study do not invalidate the references but can contribute to their more appropriate and consistent use.


Subject(s)
Birth Weight , Body Height , Body Weights and Measures , Infant, Newborn , Child Care , Cephalometry
16.
Braz. dent. sci ; 24(2): 1-10, 2021. tab, ilus
Article in English | LILACS, BBO | ID: biblio-1178113

ABSTRACT

Objective: The purposes of our research were to establish cephalometric standards for Yemeni adults and to compare them with those of the Caucasians. Material and Methods: 100 Yemeni students (fifty males, mean age of 23.6 ± 2.1 years, and fifty female, mean age of 21.5 ± 3.1 years) with normal occlusions and well-balanced faces were involved in the study. Inclusion criteria were a class I occlusion with minor or no crowding, the whole teeth is present except third molars and no previous orthodontic, orthopedic or maxillofacial surgery treatment. Five angular and eighteen linear measurements were used for the skeletal, dental and soft tissue analysis. All participant's Lateral cephalometric radiographs were evaluated. The average values and standard deviations for all the angles and linear measurements were determined. The differences for each measurement between the Yemeni and Caucasian participants were calculated using unpaired t­tests. Results: Yemeni subjects had a more retrognathic mandibular positions (P< 0.05), protrusive mandibular incisors (P< 0.01), more protruded lip positions (P < 0.01), deeper mentolabial sulci (P< 0.01) and a steeper mandibular planes (P< 0.001) compared to the Caucasians. Yemeni females had a larger lower face height than Caucasian females (P< 0.001). Conclusions The study provides specific standards for Yemeni adults and shows that the Yemenis had different skeletal and dentoalveolar cephalometric standards in comparison with Caucasians (AU)


Objetivo: O objetivo de nossa pesquisa foi estabelecer padrões cefalométricos para adultos iemenitas e compará-los com os caucasianos. Material e Métodos: Cem estudantes iemenitas (cinquenta homens, idade média de 23,6 ± 2,1 anos, e cinquenta mulheres, idade média de 21,5 ± 3,1 anos) com oclusões normais e faces bem equilibradas foram envolvidos no estudo. Os critérios de inclusão foram: oclusão de classe I com pouco ou nenhum apinhamento, todos os dentes presentes, exceto terceiros molares e sem histórico de tratamento ortodôntico, ortopédico ou cirurgia maxilo-facial prévio. Cinco medidas angulares e dezoito lineares foram utilizadas para a análise esquelética, dentária e de tecidos moles. Todas as radiografias cefalométricas laterais dos participantes foram avaliadas. Foram determinados os valores médios e desvios padrão para todos os ângulos e medidas lineares. As diferenças para cada medição entre os participantes iemenitas e caucasianos foram calculadas usando testes t não pareados. Resultados: Os indivíduos iemenitas tinham posições mandibulares mais retrognáticas (P <0,05), incisivos inferiores protrusivos (P <0,01), posições dos lábios mais protuberantes (P <0,01), sulcos mentolabiais mais profundos (P <0,01) e planos mandibulares mais inclinados (P <0,001) em comparação com os caucasianos. As mulheres iemenitas tinham uma altura facial inferior maior do que as mulheres brancas (P <0,001). Conclusão:O estudo fornece padrões específicos para adultos iemenitas e mostra que os iemenitas apresentaram padrões cefalométricos esqueléticos e dentoalveolares diferentes em comparação com os caucasianos. (AU)


Subject(s)
Humans , Male , Female , Adult , Radiography, Dental , Cephalometry , Malocclusion, Angle Class I
17.
Rev. Ateneo Argent. Odontol ; 64(1): 38-43, 2021. ilus
Article in Spanish | LILACS | ID: biblio-1252459

ABSTRACT

El objetivo de esta segunda parte es relacionar el protocolo utilizado en el Ateneo Argentino de Odontología (A.A.O.) expuesto en la Parte I, con los cefalogramas laterales diseñados por los Dres. Arne Björk, Joseph Jarabak, James McNamara y Robert Ricketts y proponer las visiones complementarias en la búsqueda de un diagnóstico y un plan de tratamiento de mayor precisión. La aplicación de una secuencia lógica en el diagnóstico de una maloclusión permite establecer una categoría de análisis jerarquizada en función de los condicionantes y de las posibilidades de intervención terapéutica (AU)


The objective of this second part is to relate the protocol used in the Ateneo Argentino de Odontología (A.A.O.) exposed in Part I, with the lateral cephalograms designed by the Drs. Arne Bjork, Joseph Jarabak, James McNamara and Robert Ricketts and propose complementary visions in the search for a more accurate diagnosis and treatment plan. The application of a logical sequence in the diagnosis of malocclusion, allows to establish a category of hierarchical analysis according to the conditions and the possibilities of therapeutic intervention (AU)


Subject(s)
Humans , Male , Female , Clinical Protocols , Cephalometry/methods , Malocclusion/diagnostic imaging , Patient Care Planning , Argentina , Societies, Dental/organization & administration , Clinical Diagnosis
18.
Braz. oral res. (Online) ; 35: e27, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1153614

ABSTRACT

Abstract The aim of the present overview was to evaluate the outcomes of systematic reviews to determine the incidence of condylar resorption in patients submitted to orthognathic surgery and analyze whether the risk of developing this condition is related to a specific type of surgery. Searches were conducted in the PubMed/MEDLINE, Embase, and Cochrane electronic databases for systematic reviews with quantitative data on condylar resorption due to any type of orthognathic surgery for dentoskeletal deformities published up to May 25, 2019. The AMSTAR 2 and Glenny tools were applied for the quality appraisal. Five systematic reviews were included for analysis. Only one article was considered to have high quality. Among a total of 5128 patients, 12.32% developed condylar resorption. From those patients, 70.1% had double jaw surgery, 23.4% had mandibular surgery alone, and in 6.5% a Lefort I technique was used. Based on these findings, bimaxillary surgery could be considered a risk factor for condylar resorption. However, these results should be interpreted with caution, since other factors, such as pre-operative skeletal deformities, type of movement, and type of fixation, can contribute to the development of this condition. Further studies should consider reporting main cephalometric data, temporomandibular diagnosis, hormonal levels, and tomographic measures before and after the surgery at least every 6 months during the firsts two years to identify accurately risk factors for condylar resorption.


Subject(s)
Humans , Bone Resorption/etiology , Bone Resorption/epidemiology , Orthognathic Surgical Procedures , Cephalometry , Incidence , Systematic Reviews as Topic , Mandibular Condyle/surgery
19.
Braz. oral res. (Online) ; 35: e034, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1153609

ABSTRACT

Abstract The objective of this study was to apply elliptic Fourier analysis (EFA) to find shape differences among skeletal growth patterns in both radiographic and tomographic panoramic views, controlling for asymmetry. Lateral and panoramic images were obtained from 350 patients. After screening patients with asymmetric linear and angular values and natural asymmetric hemimandibular shape, 240 patients were included in the study: 48 with tomographic information and 192 with radiographic information. The images were classified according to the mandibular plane angle and the ANB angle. Mandibular contours were digitized on the panoramic images and EFA was performed with 20 harmonics, filtering rotation, translation and size properties. As there were no differences between radiographic and tomographic panoramic mandibular contours and normal distribution was found in all groups, MANOVA was conducted to determine differences using a Hotelling's p-values with Bonferroni correction and an XY graph tool was applied to visualize these differences graphically. A 95% confidence level was used. Significative differences were found among hypodivergent, normodivergent, and hyperdivergent patterns in Class I, II, and III (p < 0.05), located mainly in the symphyseal region. The results of this study suggest that EFA is a useful tool to mathematically analyze mandibular contours and their morphological differences given by facial biotypes. This method could improve the precision of the mandibular prediction models.


Subject(s)
Humans , Mandible/diagnostic imaging , Cephalometry , Fourier Analysis
20.
São Paulo; s.n; 2021. 99 p.
Thesis in Portuguese | LILACS | ID: biblio-1342174

ABSTRACT

Introdução - As elevadas taxas de mortalidade neonatal e a prevalência de bebês nascidos pequenos para idade gestacional (PIG) ainda apresentadas por regiões de baixa e média renda indicam a necessidade de investigação sobre fatores que influenciam o crescimento fetal. Medidas biométricas fetais

Introduction Elevated rates of neonatal mortality and small-for-gestational-age (SGA) babies in low- and middle-income regions indicate the need to investigate factors associated with fetal growth. Fetal biometric measurements below the 10th percentile for gestational age (GA) reflect failure in achieving growth potential and provide opportunities for prenatal interventions. Objective To investigate factors associated with fetal biometric measurements below the 10th percentile assessed at early third trimester among pregnant women in the MINA-Brazil study. Methods This was a prospective analysis of pregnant women living in the urban area of Cruzeiro do Sul (AC), followed up since the antenatal period. Screening of participants took place from February 2015 to January 2016. A sociodemographic and health history interview was carried out along with two clinical assessments, scheduled between the second and third trimesters of pregnancy, to collect data on lifestyle factors and complications during pregnancy, anthropometric evaluation, blood collection, and ultrasound scan assessing fetal biometric measurements of head circumference (HC), abdominal circumference (AC) and femoral length (FL). Poisson regression models with hierarchical selection of variables were fitted for factors associated with occurrence of fetal measurements below the 10th percentile at early third trimester. Prevalence ratios (PR) and 95% confidence intervals (95%CI) were estimated. Results Among 426 participants (mean age 25 years (SD 6.4) and gestational age 27.8 weeks (SD 1.7)), 11.3%, 8.9% e 9.4% had fetuses with HC, AC, FL below the 10th percentile at early third trimester. Fetal biometric measurements below the 10th percentile were negatively associated with higher maternal education level, which denoted over 50% of protection (HC: PR 0.47, 95%CI 0.28; 0.81; AC: PR 0.48, 95%CI 0.26; 0.87; and FL: PR 0.48, 95%CI 0.27; 0.86). Adjusted for maternal education level, nulliparity (PR 1.94, 95%CI 1.10; 3.43), higher pre-gestational body mass index (BMI) (PR 1.06, 95%CI 1.01; 1.11), and pre-gestational alcohol consumption (PR 1.80, 95%CI 0.98; 3.30) were associated with HC measurements below the 10th percentile. Maternal height (p for trend 0.039) and pre-gestational alcohol consumption (PR 2.55, 95%CI 1.31; 4.96) were also associated with AC measurements below the 10th percentile. Association between higher average screen time per day during antenatal follow-up and FL measurements below the 10th percentile were observed as well (p for trend 0.031). Higher maternal education level, which may provide better material and non-material conditions, seems to protect fetal growth from failure to reach potential fetal size for GA. Positive associations observed with obstetric and antenatal conditions may be mediated by biological factors or gestational dysfunctions to incur in fetal measurements below the 10th percentile. Conclusion The occurrence of fetal biometric measurements below the 10th percentile for GA and their associated factors corroborate pre-pregnancy and antenatal care improvements anchored in equity policies, and for new strategies prior to birth that optimize the window of opportunity in the first thousand days of life.


Subject(s)
Infant, Small for Gestational Age , Cephalometry , Biometry , Abdominal Circumference , Femur/growth & development , Fetal Growth Retardation , Fetus
SELECTION OF CITATIONS
SEARCH DETAIL