Virulence of Streptococcus mutans: An intrafamilial cohort study on transmission of genotypes.

BACKGROUND: The main aims of this cohort study were to measure the intrafamilial risk of transmission, sharing and stability of the most virulent S. mutans genotypes. MATERIAL AND METHODS: A total of 392 clinical isolates of S. mutans obtained from caries-active adults and genotyped to evaluate their transmissibility over time. After extraction of the chromosomal DNA, PCR were performed to detect the genes involved in the production of GbpA (gbpA) and mutacin types I, II, III and IV (mutAI, mutAII, mutAIII and mutAIV). RESULTS: The gbpA, mutAI, mutAII, mutAIII and mutAIV genes were detected in 77.3, 12.5, 51, 16.6 and 89.8% of S. mutans isolates, respectively. The virulence of S. mutans was associated with its transmission (P< 0.01) and stability (P = 0.01), with the most virulent genotypes having higher transmissibility (RR = 1.83, 95% CI 1.44 to 2.32) and higher stability in the oral cavity (RR = 1.52, 95% CI 1.06 to 2.19). CONCLUSIONS: Genotypes with the genetic information to synthesize GbpA and mutacins present an important ecological advantage in the process of colonization by S. mutans; they remain stable among the oral microbiota of the host and favor intrafamilial transmission. Key words:Streptococcus mutans, virulence factors, transmission, dental caries.

Oral rehabilitation in pediatric dentistry: a clinical case report / Reabilitação bucal em Odontopediatria: relato de caso clínico

ABSTRACT Despite the emphasis and effort devoted to preventive dentistry, massive coronal destruction caused by dental caries or trauma is still seen in pediatric dentistry practice today. The technical difficulties related to dental treatment are compounded by problems related to the behavior of young patients in these circumstances, which brings the need for a broader understanding of behavior management techniques and certain skills in dealing with patients by dental practitioners, aimed at ensuring the well-being of both patient and dentist during treatment. This case report presents and discusses the scientific rationale for the treatment options adopted, considering the techniques and materials already established for aesthetic rehabilitation of adult patients (such as resins, glass-fiber posts, and glass ionomers), and now employed and adapted for pediatric dental care, that would best suit the clinical situation described. At the end of treatment, the patient achieved full rehabilitation and a restored smile, through the use of modern techniques and materials, while the dental practitioner gained a better understanding of the optimal treatment possibilities and strategies for similar cases.

RESUMO Apesar da ênfase e esforço dedicados à Odontologia preventiva, as grandes destruições coronárias causadas por cárie ou traumatismos dentários ainda são hoje problemas que ocorrem na prática clínica da odontopediatria. Além das dificuldades técnicas relacionadas a tais tratamentos, soma-se a isso, os problemas inerentes ao controle da conduta de um paciente muito jovem, o que traz a necessidade de um maior conhecimento de técnicas de manejo comportamental e uma habilidade no trato odontológico por parte do profissional, visando o bem-estar de ambos nestas circunstâncias. O relato de caso a seguir tem como objetivo apresentar e discutir o embasamento científico da opção de tratamento adotada, considerando os materiais, pinos de fibra de vidro, ionômeros de vidro, resinas, e as técnicas disponíveis atualmente, ou seja, procedimentos já consagrados na reabilitação estética em adultos, agora aplicados e adaptados à odontologia de bebês, e que melhor solucionariam a situação clínica descrita, visando sua aplicabilidade em clínica. Ao final obtemos um paciente reabilitado, gozando de um tratamento com técnicas e materiais bastante modernos, com seu sorriso restabelecido, e um profissional informado das possibilidades e técnicas mais adequadas para o tratamento de pacientes em situações semelhantes.

Pit and Fissure Sealants with Different Materials: Resin Based x Glass Ionomer Cement ­ Results after Six Months

Objective: To compare the retention and superficial characteristics between a new resin-modified glass ionomer sealant and resin sealant. In addition, the teeth sealed were compared to partially erupted first molars (control group) without sealing in relation to the incidence of dental caries. Material and Methods: Initially, 31 children aged 6-8 years participated in this study. The study children showed caries history, but had at least two healthy first molars. A total of 114 teeth were randomly divided into three groups: Clinpro (n=36), Fluroshield (n=38), and control (n=40). The two sealants were applied under relative isolation after previous prophylaxis and enamel etching with phosphoric acid 35% (15s). Clinical evaluation was performed by two calibrated examiners. They evaluated the retention and surface characteristics of the occlusal surface. Results: Fluroshield® showed significantly greater retention than ClinproTM Varnish® XT (p=0.002). However, the performance analysis of the success and failure of retention presented no significant difference between the materials (p=0.141). Concerning to the surface characteristics, Fluroshield performed better than Clinpro after analyzing the marginal deterioration, marginal discoloration, and superficial discoloration (p<0.05). The surface texture of the materials under study was similar (p=0.071). Sealed groups (Clinpro=Fluroshield) showed similar performance in the prevention of dental caries, which was significantly lower than that of control group (p=0.001). Conclusion: Both sealants, Fluroshield® and Clinpro TM Varnish® XT were effective in preventing caries lesion within 6 months, although Fluroshield sealant showed better clinical retention.

A Two-Year Clinical Evaluation of Fluoride and Non-Fluoride Resin-Based Pit-and-Fissure Sealants

The aim of this study was to evaluate and compare for 24 months, the retention and surface characteristics of two pit-and-fissure sealants: Helioseal Clear and Helioseal F (Ivoclar Vivadent). The correlation between the different stages of eruption and sealant retention was also verified. Fifty children aged 6 to 8 years participated in the study, totalizing 153 teeth divided into two groups: HC (Helioseal Clear) and HF (Helioseal F). After 6, 12, 18 and 24 months, a clinical examination was performed by previously calibrated examiners. The surface characteristics and the retention of the sealants (modified RYGE & SNYDER criteria) were assessed. Analyzing the occlusal surface, HC exhibited a statistically significant higher retention at 12 (p=0.0345) and 24 months (p=0.0076). Concerning the surface characteristics, only the superficial discoloration of HC was smaller than HF, during the entire studied period. For all the other characteristics, the results of the Mann-Whitney test were highly significant at different periods (p=0.0000 to 0.0421). The frequency of air bubbles within the sealant surfaces, determined by Chi-square test, was significantly higher in HF (p=0.000:12 and 18 months to p=0.002: 6 and 24 months). HC sealant material exhibited the best performance regarding the retention and surface characteristics on the occlusal surface.

Resumo Os objetivos deste trabalho foram avaliar e comparar por 24 meses, a retenção e as características superficiais de dois diferentes materiais seladores, Helioseal Clear e Helioseal F(Ivoclar Vivadent). A correlação entre os diferentes graus de erupção e a retenção dos selantes também foram verificadas. Cinquenta crianças de 6 a 8 anos de idade participaram deste estudo, totalizando de 153 dentes divididos em dois grupos: HC (Helioseal Clear) e HF (Helioseal F). Após 6, 12, 18 e 24 meses, avaliação clínica foi realizada por dois examinadores calibrados. As caracterísiticas superficiais e a retenção (critério modificado de Ryge &Snyder) foram avaliadas. A análise da superfície oclusal, o HC demostrou retenção estatisticamente significante maior para os 12 meses (p=0,0345) e 24 meses (p=0,0076). Em relação às características superficiais, somente para descoloração superficial, o HC foi menor que do HF, durante o período estudado. Para as demais características, os resultados do teste de Mann-Whitney foram altamente significantes para HC em diferentes períodos (p=0,0000 a 0,0421). A frequência de bolhas nas superfícies seladas, determinada pelo teste do Qui-quadrado, foi maior e mais significante no HF (p=0,000:12 e 18 meses a p=0,002: 6 e 24 meses). O selante HC apresentou melhor desempenho à retenção e características superficiais.

A Two-Year Clinical Evaluation of Fluoride and Non-Fluoride Resin-Based Pit-and-Fissure Sealants.

The aim of this study was to evaluate and compare for 24 months, the retention and surface characteristics of two pit-and-fissure sealants: Helioseal Clear and Helioseal F (Ivoclar Vivadent). The correlation between the different stages of eruption and sealant retention was also verified. Fifty children aged 6 to 8 years participated in the study, totalizing 153 teeth divided into two groups: HC (Helioseal Clear) and HF (Helioseal F). After 6, 12, 18 and 24 months, a clinical examination was performed by previously calibrated examiners. The surface characteristics and the retention of the sealants (modified RYGE & SNYDER criteria) were assessed. Analyzing the occlusal surface, HC exhibited a statistically significant higher retention at 12 (p=0.0345) and 24 months (p=0.0076). Concerning the surface characteristics, only the superficial discoloration of HC was smaller than HF, during the entire studied period. For all the other characteristics, the results of the Mann-Whitney test were highly significant at different periods (p=0.0000 to 0.0421). The frequency of air bubbles within the sealant surfaces, determined by Chi-square test, was significantly higher in HF (p=0.000:12 and 18 months to p=0.002: 6 and 24 months). HC sealant material exhibited the best performance regarding the retention and surface characteristics on the occlusal surface.

Dental manifestations of patient with Vitamin D-resistant rickets

Patients with Vitamin D-resistant rickets have abnormal tooth morphology such as thin globular dentin and enlarged pulp horns that extend into the dentino-enamel junction. Invasion of the pulp by microorganisms and toxins is inevitable. The increased fibrotic content of the pulp, together with a reduced number of odontoblasts, decreases the response to pulp infection. The most important oral findings are characterized by spontaneous gingival and dental abscesses occuring without history of trauma or caries. Radiographic examinations revealed large pulp chambers, short roots, poorly defined lamina dura and hypoplastic alveolar ridge. These dental abscesses are common and therefore the extraction and pulpectomy are the treatment of choice. The purpose of this article is to report a case of Vitamin D-resistant rickets in a 5 year-old boy, describing the dental findings and the treatment to be performed in these cases.

Dental manifestations of patient with vitamin D-resistant rickets.

Patients with Vitamin D-resistant rickets have abnormal tooth morphology such as thin globular dentin and enlarged pulp horns that extend into the dentino-enamel junction. Invasion of the pulp by microorganisms and toxins is inevitable. The increased fibrotic content of the pulp, together with a reduced number of odontoblasts, decreases the response to pulp infection. The most important oral findings are characterized by spontaneous gingival and dental abscesses occuring without history of trauma or caries. Radiographic examinations revealed large pulp chambers, short roots, poorly defined lamina dura and hypoplastic alveolar ridge. These dental abscesses are common and therefore the extraction and pulpectomy are the treatment of choice. The purpose of this article is to report a case of Vitamin D-resistant rickets in a 5 year-old boy, describing the dental findings and the treatment to be performed in these cases.

Avaliação clínica da saúde bucal de crianças dos municípios de Alfenas e Areado, Minas Gerais, Brasil / Clinical evaluation of the oral health of children in the Cities of Alfenas and Areado, MG, Brazil

Objetivo: Avaliar, clinicamente, a saúde bucal de 447 crianças, de 0 a 71 meses de idade, pertencentes a escolas públicas e privadas, com e sem assistência odontológica, de dois municípios brasileiros (Alfenas e Areado, Minas Gerais). Método: A experiência de cárie dentária (CPI) foi obtida através do índice ceos. Adicionalmente, determinou-se o índice de sangramento gengival (ISG), o índice de placa visível (IPV) e foi aplicado um questionário para avaliação de fatores indicadores de risco à cárie (FIRC). Os dados foram analisados pelos testes t-student e do Qui-quadrado e através de análise de regressão linear múltipla, com nível de significância pré-estabelecido de 5%. Resultados: Houve predomínio de lesões de cárie nos molares decíduos e um aumento da experiência de CPI com a idade, atingindo maiores valores aos 37-48 meses (ceos=1,09). O ISG foi igual a zero em todas as crianças estudadas. O ceos (P=0,0326) e o IPV (P=0,0000) entre os dois municípios foram significantes. O IPV foi significante entre as crianças com e sem assistência odontológica (P=0,0000) e entre as crianças de escolas públicas e privadas de Areado (P=0,023). Apenas o gênero masculino (P=0,00529) e a frequência de visitas ao Cirurgião Dentista (P=0,0000) influenciaram a experiência de CPI significantemente. A análise de regressão linear múltipla (P=0,0000 e R2=26%) mostrou significância somente entre a variável dependente (CPI) e as seguintes variáveis independentes: gênero masculino (P=0,0013), frequência de escovação (P=0,0000), uso de fio dental (P =0,0485), presença de fumante na residência (P =0,0020) e nível socioeconômico (P =0,0187). Conclusão: A cárie dentária afeta a população infantil de forma polarizada, numa idade muito precoce, com ênfase nos dentes posteriores e requer atenção preventiva profissional e dos pais/responsáveis.

Objective: The aim of this study was to evaluate clinically the oral health of 447 children aged 0-71 months old attending public and private schools, with and without dental assistance, in two Brazilian cities (Alfenas and Areado - MG). Method: Dental caries experience (early childhood caries - ECC) was based on the dmfs index. Additionally, the gingival bleeding index (GBI) and the visible plaque index (VPI) were determined, and a questionnaire was applied to assess the caries risk indicators. Data were analyzed statistically by the Student's t-test, chi-square test, and multiple linear regression analysis, with significance level set at 5%. Results: There was a predominance of caries lesions in the primary molars and an increase in ECC experience with age, reaching higher values at 37-48 months (dmfs=1.09). The GBI was equal to 0 for all children. The dmfs (p=0.0326) and the VPI (p=0.0000) were statistically significant between the two cities. The VPI was statistically significant between children from schools with and without dental assistance (p=0.0000) and between children from public and private schools in Areado (p=0.023). Only the male gender (p=0.00529) and the frequency of visits to the dentist (p=0.0000) influenced significantly the ECC experience. The multiple linear regression analysis (p=0.0000 and R2=26%) showed statistically significant association only between the dependent variable (ECC) and the following independent variables: male gender (p=0.0013), toothbrushing frequency (p=0.0000), use of dental floss (p=0.0485), presence of smokers at home (p=0.0020) and socioeconomic status (p=0.0187). Conclusion: ECC affects children at a very early age in a polarized manner, with emphasis on the posterior teeth, demanding preventive actions from dentists and parents/caregivers.

Cone beam computed tomography for diagnosis and treatment planning of supernumerary teeth.

Conventional radiographic images are frequently used to detect supernumerary teeth. However, recent developments in 3D imaging systems have enabled dentists to better visualize supernumerary teeth, with better contrast and more details. Cone beam computed tomography (CBCT) has improved diagnosis and treatment planning of patients with supernumerary teeth. The decision to use CBCT should be based on the diagnostic information required. This article presents three case reports of patients with supernumerary teeth to demonstrate the need for accurate diagnosis and treatment planning based on a comprehensive evaluation using CBCT.

Reabilitação bucal na primeira infância: relato de caso / Oral rehabilitation in childhood: case report

A perda precoce de dentes decíduos, com subsequente comprometimento estético, pode induzir a alterações comportamentais e de ajuste social, fatores estes que devem ser considerados no planejamento do tratamento. Este estudo apresenta uma breve revisão de literatura e um relato de caso clínico sobre a perda precoce de dentes decíduos, ocasionada pela cárie severa precoce da infância em um paciente de tenra idade com o objetivo de descrever a etiologia, as implicações clínicas e o tratamento desta condição. No caso clínico apresentado, próteses parciais removíveis superior e inferior foram necessárias para o tratamento reabilitador, além da realização da adequação do meio bucal e de exodontias. A colocação das próteses restabeleceu a estética e, consequentemente a auto-estima, além da mastigação e fonética. O diagnóstico e a intervenção no caso de perda precoce de dentes decíduos são de fundamental importância para evitar danos à saúde física e psicológica da criança

The premature loss of deciduous teeth, with subsequent aesthetic problems, may induce disturbances at the child social interactions, aspects that must be considered in the treatment planning. This study presents a brief review of the literature and a case report of the premature loss of deciduous teeth, caused by severe early childhood caries in a young child, with the objective of describing the etiology, clinical implications and treatment of this condition. In the presented case, upper and lower removable partial dentures were necessary for the rehabilitation treatment besides the adequacy of the oral environment and dental extractions. The placement of the removable partial dentures restored the aesthetic, and consequently the self-esteem, as the mastication and the phonetic. The diagnosis and early intervention are of fundamental importance to prevent physical and psychological harm of the child

Tracionamento ortodôntico-cirúrgico de incisivo superior impactado / Surgical-orthodontic traction of impacted maxillary incisor

A impacção de dentes permanentes é um fator prejudicial, do ponto de vista estético e funcional, ao desenvolvimento da oclusão. O diagnóstico é realizado por meio de avaliação clínica e radiográfica, para localizar e estudar o posicionamento intraósseo dos dentes. O tracionamento ortodôntico é uma alternativa em casos de impacção dentária, e tem como finalidade redirecionar a trajetória de erupção, auxiliando — ou até substituindo — a força eruptiva do dente não irrompido. Portanto, o objetivo deste trabalho é relatar um caso clínico de um tracionamento ortodôntico-cirúrgico de um incisivo superior impactado, com trajeto ectópico de erupção. A conduta clínica realizada foi a recuperação de espaço na arcada dentária, seguida do tracionamento ortodôntico-cirúrgico. O diagnóstico precoce da impacção dentária permitiu prevenir a instalação de problemas oclusais, bem como o tratamento adequado levou à recuperação estética e funcional da oclusão.

Reabilitação bucal em odontopediatria: relato de caso clínico / Oral rehabilitation in pediatric dentistry: clinical case report

A Odontologia moderna está voltada para os procedimentos preventivos, mesmo assim a cárie dentária constitui problema frequente na prática clínica odontopediátrica, sendo responsável por destruições coronárias extensas e tratamentos reabilitadores diversos. Nesses casos, o uso de aparelhos protéticos seria o tratamento indicado com a finalidade de restaurar a função mastigatória, normalizar a fonação, a estética, e possibilitar ajuste social e emocional do paciente. Este estudo relata um caso de reabilitação estético-funcional de um paciente de 5 anos de idade. Foi realizada exodontia do segundo molar decíduo superior direito, restauração de elementos superiores e inferiores remanescentes, confecção de coroas de aço nos molares inferiores, controle da cárie e um aparelho protético foi confeccionado para o paciente. O plano de tratamento permitiu restabelecer a função mastigatória, melhorar a fonética e estética da criança, bem como resultou na satisfação, demonstrada pelo paciente e seus familiares

The Modern dentistry is focused on the preventive procedures, even thus dental caries is a frequent problem in Pediatric Dentistry clinical practice, being responsible for extensive dental and coronal destructions and various rehabilitation treatments. In these cases, the use of prosthetic appliances on the treatment would be indicated in order to restore the masticatory function, normalize the speech, aesthetics, and provides social and emotional adjustment of the patient. This case reports a aesthetic-rehabilitation functioning of a 5 years-old patient. We performed extraction of the upper right second deciduous molar, upper and restoration less remaining, making steel crowns on molars, caries control and a prosthetic device was fabricated for the patient. The treatment plan allowed restore chewing function, improve phonetics and aesthetics of the child and resulted in satisfaction, demonstrated by patients and their relatives

Management of a permanent tooth after trauma to deciduous predecessor: an evaluation by cone-beam computed tomography.

Impaction of permanent teeth represents a clinical challenge with regard to diagnosis, treatment plan, and prognosis. There is a close relationship between deciduous teeth and permanent teeth germ, and any injury in the deciduous dentition may influence the permanent teeth eruption. The extent of the damage caused to the permanent teeth germ depends on the patient age at the time of injury, type of trauma, severity, and direction of the impact. Conventional radiographic images are frequently used for diagnosis; however, recent developments in three-dimensional (3D) imaging systems have enabled dentistry to visualize structural changes effectively, with better contrast and more details, close to the reality. The cone-beam computed tomography (CBCT) has been used in the diagnosis and treatment plan of these impacted teeth. The purpose of the present case report is to describe a successful conservative management of a retained permanent maxillary lateral incisor with delayed root development after a trauma through the deciduous predecessor in a 9 year-old patient. After clinical and radiographic examination, a CBCT examination of the maxilla was requested to complement the diagnosis, providing an accurate 3D position of the retained tooth and its relationship to adjacent structures. The proposed treatment plan was the surgical exposure and orthodontic traction of the retained tooth. The lateral incisor spontaneously erupted after 6 months. Therefore, this case report suggests that permanent teeth with incomplete root formation have a great potential for spontaneous eruption because no tooth malposition or mechanical obstacles are observed.

Uso da tomografia computadorizada de feixe cônico em odontopediatria: relato de casos / Use of cone beam computed tomography in pediatric dentistry: case reports

Tomografia Computadorizada de Feixe Cônico é uma técnica de aquisição de imagens queoferece diversas vantagens na prática clínica odontológica por produzir imagens tridimensionais da região dentomaxilofacial. Em Odontopediatria, a avaliação de estruturas em diferentes planos é necessária especialmente em casos complexos, nos quais as radiografias convencionais não fornecem com exatidão informações importantes. O presente estudo tem como objetivo relatar três casos clínicos de diferentes alterações buco-dentárias em que a utilização da Tomografia Computadorizada de Feixe Cônico auxiliou na determinação de um correto diagnóstico e definição de um plano de tratamento adequado.

Cone Beam Computed Tomography is a technique that offers many advantages in dentistry because it produces three-dimensional imaging of the dentomaxillofacial structures. In pediatric dentistry, the need to evaluate structures in different planes is noticed especially in complex cases, in which conventional radiographs do not show, in an accurate way, some important information. Therefore, the purpose of this study is to report three cases of different alterations which the use of Cone Beam Computed Tomography helped us for correct diagnosis and adequate treatment planning.

Dental erosion in a group of 12- and 16-year-old Brazilian schoolchildren.

PURPOSE: This study's purpose was to assess the prevalence of dental erosion in adolescents and to investigate the association between erosion and sociodemographic characteristics. METHODS: This study consisted of a single center cluster random sample of 414 adolescents (12 and 16 years old) of both genders from private and public schools in Bauru, São Paulo, Brazil. Two previously calibrated examiners (kappa=0.85) used the O'Brien (1994) index for assessment of dental erosion on the buccal and palatal surfaces of the permanent maxillary incisors and on the occlusal surfaces of the permanent first molars. Data on gender, type of school, and mean family income were collected by a questionnaire completed by the adolescents. Descriptive statistics were applied to the data, and the associations between erosion and sociodemographic variables were investigated by chi-square test (P<0.05). RESULTS: The prevalence of dental erosion was 20% (N=83), with only enamel being involved (score 1). The labial surface was the most affected (16%). There were no significant differences between the presence of erosion and gender, type of school, and mean family income. CONCLUSIONS: The results indicate that dental erosion restricted to enamel was observed among adolescents in Bauru/Brazil, and there was no correlation between this condition and sociodemographic factors.

In situ investigation of the remineralizing effect of saliva and fluoride on enamel following prophylaxis using sodium bicarbonate.

OBJECTIVES: This in situ study evaluated the effect of saliva, associated or not with fluoride, on enamel previously submitted to prophylaxis using sodium bicarbonate. METHODS: The study was conducted on enamel blocks submitted to in vitro prophylaxis using sodium bicarbonate. The blocks were randomly divided into 2 groups (G1/G2) and mounted on intraoral appliances wore by 10 volunteers. G1 blocks were directly exposed to saliva in situ, while blocks in G2 were exposed to saliva with fluoride (rinsing with 0.2% NaF solution during the initial minute). Enamel alterations were evaluated using surface microhardness and profilometry. Enamel hardness data were analyzed by ANOVA and Tukey tests and surface wear was evaluated using paired t test (P<.05). RESULTS: No significant differences were found between G1 and G2 for enamel hardness and wear. The wear after prophylaxis was not different from the wear after the in situ stage. Baseline mean values of enamel hardness, after prophylaxis and after the in situ stage were 340±16.6, 329±35.7 and 354±37.8 for G1 and 338±15.6, 312±46.3 and 340±21.8 for G2, respectively. CONCLUSIONS: It was concluded that saliva alone exhibited a similar effect to saliva associated with fluoride; after 4h of in situ remineralization, there was no recovery in height of the enamel structure that had been lost due to the application of sodium bicarbonate.

Perfil de tratamento de urgência de crianças de 0 a 12 anos de idade, atendidas no Serviço de Urgência Odontológica da Faculdade de Odontologia de Bauru da Universidade de São Paulo / Urgency treatment profile of 0 to 12 year-old-children assisted at urgency dental service from Bauru Dental School, University of São Paulo

Foram avaliados os prontuários de atendimentos de crianças de 0 a 12 anos de idade, atendidas no Setor de Urgência Odontológica (SUO) da Faculdade de Odontologia de Bauru, da Universidade de São Paulo, no período compreendido entre os anos de 2004 a 2008 que continham informações completas sobre o paciente e o tipo de atendimento realizado. Os dados analisados foram: idade, gênero, motivo da visita, exames, tratamentos realizados e tipo de encaminhamento. As crianças foram divididas em dois grupos de acordo com a injúria sofrida: traumáticas e não-traumatícas. Os dados foram tabulados e submetidos a uma análise descritiva. Do total de pacientes atendidos no SUO, nesse intervalo de 60 meses, 1236 (9,05%) eram crianças, sendo que a maoria apresentava idade ente 7 e 12 anos (62,78%). Enquanto as lesões traumáticas foram responsáveis por 18,52% (229) dos atendimentos, as injúrias não-traumáticas foram responsáveis por 81,47% (1007). O tratamento para ambos estava de acordo com o preconizado para esse tipo de serviço. Por meio do presente estudo, pôde-se concluir que a cárie dentária foi a lesão que gerou a maior ocorrência dos atendimentos realizados pelo SUO, o que indica uma maior necessidade de orientação em saúde bucal da população, com ênfase nas ações preventivas.

The attendance's records of children between 0 to 12 years old assisted at Urgency Dental Service (UDS) from Bauru Dental School, University of São Paulo were assessed in the period among the years 2004 and 2008, which only the records that containing all information completed about the patient or type of treatment were analyzed. The analyzed data were age, gender, main complaint, exams, performed treatmente records and follow-up care. They were divided into two groups in relation to the involved injury: traumatic and non-traumatic. Data were plotted and submitted to a descriptive statistical analysis. Among the total of patients attended at UDS at this period of 60 months, 1236 (9.05%) were children the majority was between 7 and 12 years old (62.78%). While traumatic lesions were the cause of 229 (18.52%) of treatments, the non-traumatic injuries were the cause of 1007 (81.47%). The treatment performed in both situations was done according to the indicated protocol for each case. Through this study it was concluded that dental caries was the most frequent lesion of the treatments provided by UDS, which indicates a higher need for oral health orientation of the population with emphasis in preventive measures.

Reconstrução de fratura coronária com resina composta reforçada com pino de fibra de vidro: relato de caso / Reconstruction of crown fracture with glass fiber-reinforced post and composite resin: case report

As fraturas coronárias são os traumatismos mais frequentes na dentição permamente e requerem tratamento funcional e estético. O objetivo deste trabalho é descrever um caso clínico do tratamento de fratura coronária complicada de um incisivo central inferior permanente em uma criança de 9 anos...

Crown fracture is the most frequent traumatic injury in the permanent dentition, and requires functional and esthetic treatment. the aim of this study was to report the reconstruction of a permanent mandibular central incisor crown fracture in a 9 years old boy...

Perfil de tratamento de urgência de crianças de 0 a 12 anos de idade, atendidas no Serviço de Urgência Odontológica da Faculdade de Odontologia de Bauru da Universidade de São Paulo. (AU) / Urgency treatment profile of 0 to 12 year-old-children assisted at urgency dental service from Bauru Dental School, University of São Paulo

Foram avaliados os prontuários de atendimentos de crianças de 0 a 12 anos de idade, atendidas no Setor de Urgência Odontológica (SUO) da Faculdade de Odontologia de Bauru, da Universidade de São Paulo, no período compreendido entre os anos de 2004 a 2008 que continham informações completas sobre o paciente e o tipo de atendimento realizado. Os dados analisados foram: idade, gênero, motivo da visita, exames, tratamentos realizados e tipo de encaminhamento. As crianças foram divididas em dois grupos de acordo com a injúria sofrida: traumáticas e não-traumatícas. Os dados foram tabulados e submetidos a uma análise descritiva. Do total de pacientes atendidos no SUO, nesse intervalo de 60 meses, 1236 (9,05%) eram crianças, sendo que a maoria apresentava idade ente 7 e 12 anos (62,78%). Enquanto as lesões traumáticas foram responsáveis por 18,52% (229) dos atendimentos, as injúrias não-traumáticas foram responsáveis por 81,47% (1007). O tratamento para ambos estava de acordo com o preconizado para esse tipo de serviço. Por meio do presente estudo, pôde-se concluir que a cárie dentária foi a lesão que gerou a maior ocorrência dos atendimentos realizados pelo SUO, o que indica uma maior necessidade de orientação em saúde bucal da população, com ênfase nas ações preventivas.

The attendance's records of children between 0 to 12 years old assisted at Urgency Dental Service (UDS) from Bauru Dental School, University of São Paulo were assessed in the period among the years 2004 and 2008, which only the records that containing all information completed about the patient or type of treatment were analyzed. The analyzed data were age, gender, main complaint, exams, performed treatmente records and follow-up care. They were divided into two groups in relation to the involved injury: traumatic and non-traumatic. Data were plotted and submitted to a descriptive statistical analysis. Among the total of patients attended at UDS at this period of 60 months, 1236 (9.05%) were children the majority was between 7 and 12 years old (62.78%). While traumatic lesions were the cause of 229 (18.52%) of treatments, the non-traumatic injuries were the cause of 1007 (81.47%). The treatment performed in both situations was done according to the indicated protocol for each case. Through this study it was concluded that dental caries was the most frequent lesion of the treatments provided by UDS, which indicates a higher need for oral health orientation of the population with emphasis in preventive measures.

In vitro evaluation of enamel erosion after Nd:YAG laser irradiation and fluoride application.

OBJECTIVE: Previous investigations have demonstrated improved enamel demineralization resistance after laser irradiation. Due to the possibility of a synergistic effect between laser and fluoride, this study investigated the effect of fluoridated agents and Nd:YAG irradiation separately and in combination on enamel resistance to erosion. METHODS: One hundred bovine enamel blocks were randomly divided into 10 groups: G1, untreated (control); G2, acidic phosphate fluoride (APF) (1.23% F) for 4 min; G3, fluoride varnish for 6 h (NaF, 2.26%); G4, 0.5 W Nd:YAG laser (250 microm pulse width, 10 Hz, 35 J/cm(2), with uniform velocity for 30 sec in each application); G5, 0.75 W Nd:YAG laser (52.5 J/cm(2)); G6, 1.0 W Nd:YAG laser (70 J/cm(2)); G7, APF + 0.75 W Nd:YAG laser; G8, 0.75 W Nd:YAG laser + APF; G9, fluoride varnish + 0.75 W Nd:YAG laser; and G10, 0.75 W Nd:YAG laser + fluoride varnish. During 10 d the erosive cycle was conducted by immersion of the blocks in Sprite light((R)) for 1 min, followed by immersion in artificial saliva for 59 min. This procedure was consecutively repeated four times per day. In each day, during the remaining 20 h, the blocks were maintained in artificial saliva. The wear was evaluated by profilometry (days 5 and 10). Data were tested by two-way ANOVA and Bonferroni's tests (p < 0.05). RESULTS: The mean wear at days 5 and 10 was, respectively: G1, 1.83 and 2.67 microm; G2, 1.04 and 2.60 microm; G3, 1.03 and 2.48 microm; G4, 1.13 and 2.47 microm; G5, 1.07 and 2.44 microm; G6, 1.0 and 2.35 microm; G7, 0.75 and 2.27 microm; G8, 0.80 and 2.12 microm; G9, 0.76 and 2.47 microm; and G10, 1.09 and 2.46 microm. At day 5, all the experimental groups presented significant lesser wear when compared to control group. However, at 10 d, only G7 and G8 were still different from control. CONCLUSIONS: The association between APF application and laser irradiation seems to be an alternative preventive measure against dental erosion.