Abstract Obesity is considered a risk factor for periodontal health due to the low- grade inflammation promoted by the increased adipose tissue. Objective: This study aimed to determine correlations and associations between gingival inflammation (Simplified Oral Hygiene Index, and Gingival Index), salivary immunoglobulin A (s-IgA), and salivary parameters (salivary flow and osmolality) in normal-weight and overweight/obese children. Material and Methods: Ninety-one children, aged 6 to 12 years old (8.6±1.9 years), were divided into two groups according to their body mass index (BMI), circumferences, skinfold measurements and body fat percentage: normal- weight group (NWG; n =50) and overweight/obese group (OG; n =41). A calibrated examiner performed the clinical examination using the Simplified Oral Hygiene Index, Gingival Index, and salivary collection. Data analysis included descriptive statistics and association tests ( p <0.05). Results: OG presented statistically higher s-IgA values compared with NWG, especially among the obese children ( p <0.05). Significant positive correlations between s-IgA and salivary osmolality in OG ( p <0.05), and between s-IgA and BMI values ( p <0.05) and body fat percentage ( p <0.05) were observed among all the children. Effect size varied from moderate for s-IgA values ( d =0.57) to large for BMI ( d =2.60). Conclusion: Gingival inflammation and salivary parameters were similar for NWG and OG; however, s-IgA presented higher values in OG, with correlations between BMI and body fat percentage.

Dentre as hemopatias a púrpura trombocitopênica idiopática (PTI) se enquadra no grupo de doenças com alterações plaquetárias e se caracteriza pela diminuição no número de plaquetas do sangue. Clinicamente, crianças com PTI podem apresentar petéquias, equimose, hematúria, epistaxe e ocasionalmente hemorragias teciduais. As manifestações bucais, quando presentes, se caracterizam pelo sangramento gengival espontâneo e petéquias ou hematomas na mucosa, palato e língua. Portanto, é fundamental que o cirurgião-dentista tenha conhecimento sobre a patologia e terapêutica necessária e assim possa determinar o tratamento ideal para estes pacientes. O objetivo do trabalho é relatar o caso de um paciente de 4 anos de idade com PTI aguda, discutir as principais manifestações clínicas em crianças e orientar o cirurgião-dentista para o correto manejo destes pacientes.

Idiopathic Thrombocytopenic Purpura (ITP) is a hematological disease characterized by decreased number of blood platelets. Clinically, children with ITP may present petechiae, ecchymoses, haematuria, epistaxis and occasionally hemorrhage. Oral manifestations include spontaneous gingival bleeding, petechiae or hematomas of the mucosa, palate and tongue. It is important for dentists to be aware of ITP in order to properly recognize this condition and offer the adequate treatment to the patient. The aim of this report was, therefore, to relate the case of a 4-year-old patient with acute ITP, to review its main clinical signs in children and describe the management of these patients at the dental office.

The aim of this study was to investigate the prevalence of supernumerary teeth in a Brazilian pediatric population. One examiner evaluated the presence of supernumerary teeth in panoramic radiographs of 1719 subjects (762 male and 957 female), with ages ranging from 4 to 14.5 years (mean 8.4 years old), from the archive of the Preventive Orthodontic Course of the Rehabilitation Hospital of Bauru, São Paulo. Supernumerary teeth were present in thirty subjects (1.7%, 16 males and 14 females). Difference between sexes was not statistically significant. Twenty-nine supernumerary teeth (96.7%) were located in the maxilla, and only 1 (3.3%) located in mandible. Seventeen supernumerary teeth (56.7%) located in maxilla were mesiodens. The early diagnosis of supernumerary teeth is essential to prevent malocclusion and malposition of permanent teeth demonstrating the importance of panoramic radiographs in their detection.

El objetivo de este estudio fue investigar la prevalencia de dientes supernumerarios en una población pediátrica de Brasil. Un examinador evaluó la presencia de dientes supernumerarios en radiografías panorámicas de 1719 sujetos (762 hombres y 957 mujeres), con edades comprendidas entre 4 y 14,5 años (media 8,4 años de edad), del archivo del Curso de Ortodoncia Preventiva del Hospital de Rehabilitación de Bauru, São Paulo. Los dientes supernumerarios se presentaron en treinta sujetos (1,7%, 16 hombres y 14 mujeres). La diferencia entre sexos no fue estadísticamente significativa. Veintinueve dientes supernumerarios (96,7%) se ubicaron en el maxilar, y sólo 1 (3,3%) se ubicó en la mandíbula. Diecisiete dientes supernumerarios (56,7%) ubicados en el maxilar eran mesiodens. El diagnóstico precoz de los dientes supernumerarios es esencial para prevenir la maloclusión y malposición de los dientes permanentes, lo que demuestra la importancia de la radiografía panorámica en su detección.

Foi avaliada, in vitro, a influência do modo de armazenamento e de dois tipos de adesivos dentinários sobre a microinfiltração nas paredes axiais e cervicais de dentes decíduos restaurados com resina composta. As amostras foram divididas de acordo com o modo com que foram armazenadas e os grupos foram classificados em: Congelado, Hidratado e Desidratado. O grupo Congelado foi mantido no "freezer", em solução fisiológica, o grupo Hidratado foi armazenado em solução fisiológica em geladeira e o grupo Desidratado foi mantido seco. Foram realizados preparos tipo "slots" verticais: ocluso-mesial e ocluso-distal. Nos preparos ocluso-mesiais, utilizou-se o adesivo Scotchbond Multi-Uso e nos ocluso-distais o Prime & Bond 2.1, sendo todos restaurados com resina composta Solitaire. Após termociclagem, foram imersos em corante e os valores de microinfiltração mensurados através de sistema de imagens digitalizadas e submetidos à análise de variância. Os resultados demonstraram que o modo de armazenamento não apresentou influência estatisticamente significante na microinfiltração das restaurações. A microinfiltração na parede cervical foi significantemente maior que na parede axial, com segurança de 99,9%. Os adesivos utilizados não apresentaram influência significante na microinfiltração, nas diferentes formas de armazenamento estudadas. Porém, houve diferença estatisticamente significante nas amostras do grupo Desidratado, com o adesivo Prime & Bond 2.1, considerando as margens da restauração (axial e cervical).

The influence of the method of storage of teeth and the effect of two kinds of dentin-bonding agents on the microleakage at the axial and cervical walls of composite restorations, in primary second molars, were evaluated. The samples were divided in three groups: Dehydrated, Hydrated and Frozen. The Dehydrated group was kept dry, the Hydrated group was stored in physiological saline solution under refrigeration, and the Frozen group was kept in the freezer, also immersed in physiological solution. The samples received two vertical slot preparations: a mesio-occlusal and a disto-occlusal one. In the mesio-occlusal cavities, Scotchbond Multi-Use adhesive system was used, whereas in the disto-occlusal cavities Prime & Bond 2.1 system was used, and all cavities were filled with Solitaire composite resin. The groups were then thermocycled and immersed in silver nitrate solution. Microleakage was measured by means of a digitized image system and the values were submitted to statistical analysis. The results showed that the method of storage had no statistically significant influence on marginal microleakage. Microleakage at the cervical wall was significantly greater than that at the axial wall, with 99,9% of certainty. The adhesive systems did not show significant influence on microleakage, in the studied methods of storage. However, there was statistical difference in the Dehydrated group samples, with the use of Prime & Bond 2.1 adhesive, when considering the margins of the restoration (axial and cervical).

Este estudo avaliou, in vitro, a microinfiltração na interface selante/esmalte sob a influência de contaminação do meio (saliva), emprego de "primer" (Tenure - Den-Mat) e tipo de selante (Concise Light Cured White Sealant - 3M; Fluroshield - Caulk/Dentsply). Os resultados foram obtidos a partir de medidas lineares, utilizando um sistema computadorizado de imagens digitalizadas (IMAGE PLUS). Pôde-se concluir que a contaminação salivar e a utilização de "primer" atuaram de maneira diversa nas diferentes etapas do procedimento clínico; os selantes comportaram-se de maneira semelhante quando submetidos às mesmas condições; o emprego do "primer" favoreceu o escoamento do selante Fluroshield (Caulk/Dentsply) nos sulcos e pôde ser observado maior número de bolhas com esse material.

This in vitro study investigated the effect of different types of sealants (Concise Light Cured White Sealant - 3M; Fluroshield - Caulk/Dentsply) and the use of primer (Tenure - Den-Mat) on the microleakage of saliva-contaminated enamel. Sealants were placed on 360 surfaces (occlusal, buccal and lingual) of extracted teeth free of caries. After being prepared according to each experimental group, they were thermocycled (5 and 55ºC) for 500 and 2.000 cycles. Then they were immersed in a silver nitrate solution (50%) and cut in longitudinal slices. The results were described in linear measurements (mm) by means of a digital-image analysis system. Contamination and use of primer had different influences when subjected to the different experimental conditions. Both sealants had the same influence on microleakage. Flow of Fluroshield into pit and fissures was improved by use of the primer, and a greater amount of bubbles could be observed in this material.