Diversity of clinical, radiographic and genealogical findings in 41 families with amelogenesis imperfecta.

Amelogenesis imperfecta (AI) is a group of enamel development disorders that alter the structure and chemical composition of the tissue. There is great variability in the clinical presentation; according to Witkop, AI can be categorized into 14 subtypes, which makes its diagnosis extremely complex. OBJECTIVE: This study aimed to describe and determine the frequency of clinical and radiographic features and inheritance patterns found in 41 Chilean families diagnosed with diverse types of AI. MATERIAL AND METHODS: We analyzed the clinical records, photographs, pedigrees and radiographs of 121 individuals recruited between 2003 and 2016. All of the information was included in a database that was analyzed using the application Stata 14. RESULTS: The 72 affected individuals had average age of 16 years, and no sex association with the presence of AI was found. The most frequent clinical subtypes were as follows: 43% hypomature, 25% hypoplastic, 21% hypomature/hypoplastic, 7% hypocalcified and 4% hypocalcified/hypoplastic. The number of severely affected teeth was 22, which occurred in the patients with hypocalcified and hypocalcified/hypoplasic AI who presented the highest number of damaged teeth. Caries and periodontal disease were found in 47 and 32% of the patients, respectively. Malocclusions were observed in 43% of the individuals with AI, with open bite being the most frequent. Radiographically, the thickness of the enamel decreased in 51% of the patients, and 80% showed decreased radiopacity of the enamel compared to that of dentin. Autosomal dominant inheritance pattern was found in 37% of the families with hypoplastic AI, and autosomal recessive pattern was present in 56% of the other clinical subtypes, but more frequently in those affected with hypomature and hypocalcified AI. CONCLUSION: Of the five clinical subtypes, autosomal recessive hypomature, autosomal dominant hypoplastic and autosomal recessive hypomature/hypoplastic AI were the most prevalent subtypes in this group.

Estudio de parámetros salivales y su relación con caries temprana de la infancia en niños preescolares / Study of salivary parameters and their relationship with early childhood caries in preschool children

Objetivo: El presente estudio tuvo como objetivo evaluar y comparar algunos parámetros salivales en niños preescolares e investigar su relación con caries temprana de la infancia. Materiales y métodos: Un total de 77 niños preescolares de 36 a 71 meses de edad (38 con caries y 39 sin caries) fueron seleccionados para participar en este estudio. Muestras de saliva completa no estimulada fueron recolectadas de cada niño, para evaluar el pH salival, la capacidad buffer, la velocidad de flujo salival y las concentraciones de fluoruro y fosfato. Los datos obtenidos fueron tabulados y sometidos a análisis estadístico. Resultados: En la evaluación de los diferentes parámetros salivales, se encontró que en relación a las propiedades salivales, el pH en los niños con caries fue levemente menor que en los niños sin caries. La comparación de las diferentes características salivales entre niños con y sin caries temprana de la infancia, no mostró diferencias estadísticas significativas para todos los componentes salivales evaluados (p> 0.05). Conclusión: Los parámetros salivales analizados en este estudio, no tuvieron relación con el desarrollo de caries temprana de la infancia. Los resultados obtenidos no difieren de manera significativa entre los dos grupos de niños preescolares estudiados.

Objective: The present study aims to evaluate and compare some salivary parameters in preschool children and to investigate their relationship with early childhood caries. Materials and Methods: A total of 77 preschool children aged 36 to 71 months (38 with caries and 39 without caries) were selected to participate in this study. Unstimulated whole saliva samples were collected from every child to evaluate the salivary pH, buffering capacity, salivary flow rate and fluoride and phosphate concentrations. The data obtained was tabulated and subjected to statistical analysis. Results: the evaluation of the different salivary parameters showed that in relation to salivary properties, the pH in children with early childhood caries was slightly lower than in children without caries. Comparing the different salivary characteristics between children with and without early childhood caries, the results did not show significant statistical differences for all the salivary components evaluated (p> 0.05). Conclusion: The salivary parameters analyzed in this study were not related to the development of early childhood caries. The results obtained do not differ significantly between the two groups of preschool children studied.

Determinantes de caries temprana de la infancia en niños en riesgo social / Determinants of early childhood caries in children at social risk

OBJETIVO: Determinar la prevalencia de caries temprana de la infancia en niños en riesgo social y analizar sus factores de riesgo asociados. MÉTODO: Se realizó un estudio descriptivo de corte transversal con 246 niños de 24 a 71 meses de edad, reclutados de 13 barrios marginales, en Santiago, Chile. Se utilizó un cuestionario para obtener información sobre etnia, peso al nacer, edad y educación de la madre, uso de biberón nocturno, cepillado de dientes y visitas dentales. La caries temprana de la infancia fue registrada de acuerdo a la definición aceptada por la Academia Americana de Pediatría Dental. Se utilizó un análisis de regresión logística múltiple para investigar la influencia de los factores de riesgo en la experiencia de caries. RESULTADOS: La prevalencia de caries temprana de la infancia fue de un 63%. Los análisis bivariados mostraron asociaciones entre etnicidad, educación de la madre, uso de biberón nocturno, visitas dentales y caries temprana de infancia. El modelo multivariado final, mostró que los niños cuyas madres tenían un bajo nivel de educación tenían mayores probabilidades de desarrollar caries temprana de la infancia. CONCLUSIÓN: Los niños estudiados tuvieron una alta prevalencia de caries temprana de la infancia, siendo la educación de la madre, el determinante más importante.

OBJECTIVE: The aim of the present study was to evaluate the prevalence of early childhood caries (ECC) among children at social risk and to analyze its associated determinants. METHOD: A cross-sectional study with 246 children aged 24 to 71 months, recruited from 13 different slums, below the poverty line, in Santiago, Chile was performed. An interviewer-administered questionnaire was used to obtain information from the parents on ethnicity, birth weight, mother's age and education, night bottle feeding, tooth brushing and dental visits. Early childhood caries was defined using the American Academic of Pediatric Dentistry criteria. Multiple logistic regression analysis with a stepwise selection procedure was used to investigate the influence of risk factors on the early childhood caries experience. RESULTS: The prevalence of early childhood caries was 63%. Bivariate analyses showed associations among ethnicity, mother's education, bottle feeding at night, dental visits and caries experience. The final multivariate model showed that children whose mothers had a low level of education were more likely to develop early childhood caries. CONCLUSIONS: The children at social risk studied had a high prevalence of early childhood caries, with the education of the mother as the most important determinant.

Estudio de los Valores de Hemograma en Niños con Caries Temprana de la Infancia Severa / Study of Hemogram Values in Children with Severe Early Childhood Caries

RESUMEN: La caries temprana de la infancia severa (CTI-S) es una enfermedad crónica que afecta a niños menores de 6 años, produce dolor, infección y destrucción de los tejidos dentales. El dolor que experimentan los niños con CTI-S puede llevar a hábitos alimenticios alterados que pueden causar deficiencias nutricionales. El objetivo fue evaluar los valores de hemograma en niños con CTI-S y compararlos con los valores normales de referencia para la edad. Se realizó un estudio retrospectivo observacional. Se analizaron las fichas y hemogramas de 47 niños con CTI-S, clasificados como ASA 1, atendidos bajo anestesia general en el Hospital de la Fuerza Aérea de Chile. Se tomaron en cuenta los valores del hemograma en relación a: Hematocrito, Hemoglobina y VCM. Se realizaron test descriptivos para las variables en estudio y se utilizó el testt para comparar los valores de hemograma con los valores normales de referencia. Se encontró una disminución de los valores de hematocrito en 4 pacientes (8,5 %) y una disminución del valor de VCM en 17 pacientes (36,7 %). Se encontraron diferencias significativas al comparar los promedios obtenidos en relación a hematocrito, VCM y hemoglobina en niños con CTI-S con el promedio de referencia (p <0,001). De acuerdo con los resultados obtenidos en este estudio, podemos concluir que los niños con caries temprana de la infancia severa, tienen alteraciones en los valores promedio de hemograma en relación a hematocrito, hemoglobina y VCM.

ABSTRACT: Severe early childhood caries (S-ECC) is a multifactorial chronic disease that affects children under 6 years of age, produces pain, infection and destruction of the dental tissues. The pain experienced by children with SECC may lead to altered eating habits that may cause nutritional deficiencies. The aim of this study was to evaluate the hemogram values in children with severe early childhood caries, and compare them with age population reference values. An observational retrospective study was carried out. We analyzed the medical records and their respective hemograms of 47 children with S-ECC, classified as ASA1, attended at the Chilean Air Force Hospital under general anesthesia. The hemogram values were taken into account in relation to: hematocrit, hemoglobin and mean corpuscular volume (MCV). Descriptive tests were carried out for the variables under study and the t-test was used to compare the hemogram values with the normal reference values. A decrease in hematocrit values was found in 4 patients (8.5 %) and a decrease in the value of MCV in 17 patients (36.7 %). Significant differences were found when comparing the averages obtained in relation to hematocrit, hemoglobin and MCV in children with S-ECC with the reference average (p <0.001). According to the results obtained, in this study, we can conclude that children with severe early childhood caries, have alterations in the average of hemogram values in relation to hematocrit, hemoglobin and MCV.

Diversity of clinical, radiographic and genealogical findings in 41 families with amelogenesis imperfecta

Abstract Amelogenesis imperfecta (AI) is a group of enamel development disorders that alter the structure and chemical composition of the tissue. There is great variability in the clinical presentation; according to Witkop, AI can be categorized into 14 subtypes, which makes its diagnosis extremely complex. Objective: This study aimed to describe and determine the frequency of clinical and radiographic features and inheritance patterns found in 41 Chilean families diagnosed with diverse types of AI. Material and Methods: We analyzed the clinical records, photographs, pedigrees and radiographs of 121 individuals recruited between 2003 and 2016. All of the information was included in a database that was analyzed using the application Stata 14. Results: The 72 affected individuals had average age of 16 years, and no sex association with the presence of AI was found. The most frequent clinical subtypes were as follows: 43% hypomature, 25% hypoplastic, 21% hypomature/hypoplastic, 7% hypocalcified and 4% hypocalcified/hypoplastic. The number of severely affected teeth was 22, which occurred in the patients with hypocalcified and hypocalcified/hypoplasic AI who presented the highest number of damaged teeth. Caries and periodontal disease were found in 47 and 32% of the patients, respectively. Malocclusions were observed in 43% of the individuals with AI, with open bite being the most frequent. Radiographically, the thickness of the enamel decreased in 51% of the patients, and 80% showed decreased radiopacity of the enamel compared to that of dentin. Autosomal dominant inheritance pattern was found in 37% of the families with hypoplastic AI, and autosomal recessive pattern was present in 56% of the other clinical subtypes, but more frequently in those affected with hypomature and hypocalcified AI. Conclusion: Of the five clinical subtypes, autosomal recessive hypomature, autosomal dominant hypoplastic and autosomal recessive hypomature/hypoplastic AI were the most prevalent subtypes in this group.

Análisis comparativo del índice C.O.D.P. y c.eo. en niños de 3 a 14 años de edad, con y sin placa bacteriana cromógena en la comuna de Conchalí / Comparative analysis of C.O.D.P. and c.e.o.d. index in children of 3 to 14 years old, with and without bacterial chromogenic plaque at Conchalí community

La placa bacteriana cromógena corresponde a finas manchas de aproximadamente 1 mm, de diámetro que siguen el contorno gingíval de la parte cervical del diente, observada generalmente en niños. Algunos estudios señalam como factor etiológico el metabolismo de diversos microorganismos, creando condiciones ecológicas diferentes que formarían el establecimiento de una flora específica. Otros sugieren diferencias en la composición de la saliva que permite el desarrollo de este pigmento. Su presencia coincide con una baja frecuencia de caries. Debido a esto, el presente estudio tiene como objetivo general determinar la presencia de placa bacteriana cromógena y su relación con el índice C.O.P.D. y c.e.o.d. en niños. Para este estudio se examinaron 1.029 niños de 3 a 14 años de los Colegios municipalizados y Jardines Infantiles de la Comuna de Conchalí, de nivel bajo y medio bajo; obteniéndose una muestra de 22 niños con placa bacteriana cromógena que corresponde a un 2,13 por ciento del total examinado, de este universo se seleccionaron al azar una muestra igual como grupo control (22 sin placa cromógena). Al comparar los resultados de los índices C.O.P.D. y c.e.o.d. de ambas muestras de estudio existen diferencias estadísticamente significativa. Para el índice C.O.P.D. se obtuvo p=0.003 < p=0.05 y en el índice c.e.o.d. se obtuvo p=0.04 < p=0.5 (Estos datos fueron analizados estadísticamentemediante Test de U. Mann Whitney del programa Systet versión 9 años 1998). De acuerdo a los resultados obtenidos, los niños que presentaban placas bacterianas cromógenas tienen un C.O.P.D y c.e.o.d más bajo que aquellos niños que no presentan este tipo de placa