In vivo assessment of the corrosion of nickel-titanium orthodontic archwires by using scanning electron microscopy and atomic force microscopy.

This study was undertaken to assess in vivo the corrosion in two commercial nickel-titanium (NiTi) orthodontic archwires removed from the oral cavity of patients using fluoride mouthwashes. Five volunteers took part in this study on the corrosion behavior of two brands of NiTi archwires (3M and AO (brand of archwire)) during use of two mouthwashes with neutral sodium fluoride 1.1%, one with acidulated fluoride 1.1%, and one with placebo and a control group. Each patient used one mouthwash in three different periods of time for 1 min a day for 30 days. The archwires were assessed with scanning electron microscopy and atomic force microscopy for qualitative and quantitative analysis. The values obtained with atomic force microscopy (AFM) were submitted to normality test, two-way analysis of variance, and Tukey's test at a significance level of 5%. The AFM images showed a gradual qualitative increase in the roughness of both types of wire between the treatments: control < placebo < neutral fluoride < acidulated fluoride. The arithmetic average of the roughness and root mean square of the roughness were similar. As for 3M archwires, only the acidulated fluoride group differed statistically from the others. As for AO archwires, the control and placebo groups did not differ from each other, but differed from the other fluoride treatments. The group using neutral fluoride also differed significantly from the acidulated fluoride group. 3M archwires were not affected by daily oral challenges. AO archwires were not affected by daily oral challenges either; their association with fluoride, either neutral or acidulated, increased their roughness.

Evaluation of palate area before and after rapid maxillary expansion, using cone-beam computed tomography.

OBJECTIVE: The aim of this study was to estimate the changes in the palate area after rapid maxillary expansion (RME) with the Hyrax expander in growing subjects, using cone beam computed tomography (CBCT). METHODS: Fourteen patients (9 girls and 5 boys; mean age = 11.7 ± 2.4 years) who required RME as part of their orthodontic treatment were included in this study. CBCT records had been taken before RME treatment (T0), at the end of active expansion (T1) and after a 6-month retention period (T2). The CBCT scans were manipulated with Dolphin Imaging® version 11.7 Premium software, in which landmarks were positioned and measured in relation to sagittal, coronal and axial planes, to verify the palate surface area. In addition, linear measurements of the palatal depth and width were assessed. These measurements were compared by using analysis of variance (ANOVA) for repeated measures. A p-value smaller than 0.05 was considered statistically significant. RESULTS: The palatal surface area and width significantly increased from T0 to T1, respectively by 9.27% and 9.71%, and both decreased in a non-significant manner from T1 to T2. The palatal depth had non-significant differences at T0, T1 and T2. CONCLUSIONS: RME promotes a significant gain in the surface area of the palate and an increase in intermolar width. The Hyrax appliance was effective for the treatment of maxillary atresia in growing patients. There was no vertical alteration of the palate. After a 6-month retention period, the maxilla transverse dimension and the surface area of the palate remained stable.

Evaluation of palate area before and after rapid maxillary expansion, using cone-beam computed tomography

ABSTRACT Objective: The aim of this study was to estimate the changes in the palate area after rapid maxillary expansion (RME) with the Hyrax expander in growing subjects, using cone beam computed tomography (CBCT). Methods: Fourteen patients (9 girls and 5 boys; mean age = 11.7 ± 2.4 years) who required RME as part of their orthodontic treatment were included in this study. CBCT records had been taken before RME treatment (T0), at the end of active expansion (T1) and after a 6-month retention period (T2). The CBCT scans were manipulated with Dolphin Imaging® version 11.7 Premium software, in which landmarks were positioned and measured in relation to sagittal, coronal and axial planes, to verify the palate surface area. In addition, linear measurements of the palatal depth and width were assessed. These measurements were compared by using analysis of variance (ANOVA) for repeated measures. A p-value smaller than 0.05 was considered statistically significant. Results: The palatal surface area and width significantly increased from T0 to T1, respectively by 9.27% and 9.71%, and both decreased in a non-significant manner from T1 to T2. The palatal depth had non-significant differences at T0, T1 and T2. Conclusions: RME promotes a significant gain in the surface area of the palate and an increase in intermolar width. The Hyrax appliance was effective for the treatment of maxillary atresia in growing patients. There was no vertical alteration of the palate. After a 6-month retention period, the maxilla transverse dimension and the surface area of the palate remained stable.

RESUMO Objetivo: o objetivo do presente estudo foi estimar a alteração na área do palato após expansão rápida da maxila (ERM) com o expansor Hyrax em indivíduos em crescimento, utilizando tomografia computadorizada de feixe cônico (TCFC). Métodos: quatorze pacientes (9 meninas e 5 meninos; idade média 11,7± 2,4 anos) que necessitavam de ERM como parte de seu tratamento ortodôntico foram incluídos nesse estudo. Os registros de TCFC foram obtidos antes do tratamento com ERM (T0), ao término da expansão ativa (T1) e após um período de contenção de 6 meses (T2). Os exames de TCFC foram manipulados no software Dolphin Imaging® versão 11.7 Premium, no qual os pontos anatômicos foram posicionados e medidos em relação aos planos sagital, coronal e axial, para verificar-se a área de superfície do palato. Além disso, medidas lineares da profundidade e largura do palato foram avaliadas. Essas medidas foram comparadas por análise de variância (ANOVA) para medidas repetidas. Valores de p< 0,05 foram considerados estatisticamente significativos. Resultados: a área de superfície e a largura do palato aumentaram significativamente de T0 para T1, respectivamente em 9,27% e 9,71%, e ambas diminuíram de forma não significativa de T1 para T2. A profundidade do palato teve diferenças não significativas em T0, T1 e T2. Conclusões: a ERM promove ganho significativo na área de superfície do palato e aumento na largura intermolar. O aparelho Hyrax foi efetivo para o tratamento da atrasia maxilar em pacientes em crescimento. Não houve alteração vertical no palato. Após um período de contenção de 6 meses, a dimensão transversal da maxila e a área de superfície do palato permaneceram estáveis.

Treatment of class II malocclusion and unerupted upper canines with self-ligating appliance.

Treatments without tooth extractions have become more popular over the last two decades. In this context, expansion of the maxillary arch is an interesting treatment option for cases in which space is required and other factors not favoring extractions (such as the facial profile) are present. According to several authors, this posterior expansion can be obtained using a system comprising self-ligating brackets and superelastic nickel-titanium arches. The present article aims to report a case of a young patient with Class II, Division 2 malocclusion, with impacted upper canines and significant arch length-tooth discrepancy. METHODS: The case was treated by means of a passive self-ligating appliance in association with Class II elastics and coil spring for distalizing the molars. This treatment alternative was effective for correcting Class II and obtaining space to correct tooth positioning.

Lingual frenotomy in a newborn, from diagnosis to surgery: a case report / Frenotomia lingual em recém-nascido, do diagnóstico à cirurgia: relato de caso

ABSTRACT This report describes the diagnostic approach and frenotomy in a newborn with breastfeeding difficulty, and the observation and analysis during the following 6 months. The patient was delivered normally and without complications, but showed breastfeeding difficulty during her first 5 days of life. The protocol proposed by Martinelli in 2013 was used to evaluate the lingual frenulum. After applying the protocol, the newborn was determined to require a frenotomy and the urgery was performed. The patient was reassessed using the protocol immediately after surgery and again 24 hours latter. There were improvements in the protocol scores at both reassessments. The newborn was observed and analyzed during the next six months by collecting monthly data from the vaccination card and by asking the mother for information. She was given no food supplements, pacifiers, nor sucked the thumbs, and was fed only breast milk and presented an age-appropriate weight gain. We conclude that the diagnosis using the Martinelli protocol is of fundamental importance to recognizing the need for early intervention and that the frenotomy helped improve the patient's breastfeeding and swallowing capacity.

RESUMO O objetivo foi descrever um relato de caso clínico, de diagnóstico e frenotomia em um recém-nascido com dificuldade de aleitamento e acompanhado por 6 meses. Recém-nascido, parto normal, 5 dias de vida sem alterações de saúde, apresentando dificuldade em aleitamento no seio materno. Para avaliação do frênulo lingual, utilizou-se o protocolo proposto por Martinelli, 2013. Após aplicar o protocolo, notou-se que o recém-nascido apresentou necessidade de frenotomia. Foi realizada a cirurgia, em seguida, reaplicado o protocolo imediatamente e após 24 horas. Observou-se melhora nos escores do protocolo nas aplicações imediatas e após 24 horas. O recém-nascido foi acompanhado por seis meses mensalmente, por meio de coleta de dados na carteirinha de vacinação e perguntas dirigidas mãe. Constatou- se que o recém-nascido, após a cirurgia, não fez uso de complemento alimentar, uso de chupeta e/ou dedo,sendo alimentado somente no seio materno, apresentando ganho de peso satisfatório para a idade. Concluimos que o diagnóstico por meio do protocolo é de fundamental importância, indicando a necessidade de intervenção precoce, e que a frenotomia contribuiu com a melhora no aleitamento do recém-nascido.

Estudo comparativo do tratamento da mordida profunda com o uso do Bite Turbo® ­ estudo piloto / Comparative study of the treatment of deep bite with the use of Bite Turbo® ­ pilot study

O objetivo desse estudo piloto foi avaliar os efeitos induzidos pelo uso do Bite Turbo® como um mecanismo auxiliar no tratamento ortodôntico de pacientes com mordida profunda. A amostra consistiu de 14 pacientes com média de idade de 11 anos. Sete pacientes foram tratados exclusivamente com aparelho fixo (grupo controle) e sete pacientes com aparelho fixo e o Bite Turbo® colado nos incisivos centrais superiores. O período médio de avaliação (T0-T1) nos dois grupos foi de 9 meses. O erro do desvio padrão para cada variável usada no estudo foi calculado por meio de dupla avaliação usando a fórmula Dahlberg e para avaliação das mudanças cefalométricas entre os grupos foi utilizado o teste não paramétrico de Wilcoxon a 5%. O grupo tratado com Bite Turbo® mostrou significante melhora da mordida profunda, com aumento na altura facial total e extrusão dos primeiros molares, o que levou a um aumento na profundidade facial. Concluiu-se que o uso do Bite Turbo® levou a uma melhora significante na mordida profunda, mas a rotação mandibular deve ser considerada quando planejamos o tratamento ortodôntico nos diferentes tipos faciais. (AU)

The aim of this pilot study was to evaluate the effects induced by Bite Turbo® (Ormco Corp. Glendora, Ca, USA) as an auxiliary mechanism to orthodontic treatment of patients with deep overbite. The sample consisted of 14 patients with mean age of 11 years. Seven patients were treated with fixed appliances exclusively (control group) and 7 patients with fixed appliances and Bite Turbo® bonded to the upper central incisors. The average time of the evaluation period (T0 and T1) in both groups was 9 months. The standard error deviation for each variable used in the study was calculated from the double determinations using Dahlberg's formula and the cephalometric changes between groups were evaluated by the Wilcoxon nonparametric test at 5%. The Bite Turbo® group showed significant improvement of deep overbite, with an increase in total facial height (TFH) and extrusion of the first molars which led to an increase in facial depth (FD). It was concluded that the use of Turbo Bite® led to a significant improvement in deep overbite, but the mandibular rotation should be taken into account when considering the orthodontic treatment plan in different facial types. (AU)

ANKYLOGLOSSIA AND ITS INFLUENCE ON GROWTH AND DEVELOPMENT OF THE STOMATOGNATHIC SYSTEM. / A INFLUÊNCIA DA ANQUILOGLOSSIA NO CRESCIMENTO E DESENVOLVIMENTO DO SISTEMA ESTOMATOGNÁTICO.

OBJECTIVE: To critically examine the existing Brazilian and International scientific literature regarding the influence of short lingual frenulum over growth and development of the stomatognathic system, as well as how it impacts the achievement of the shape-function balance. DATA SOURCES: An electronic literature search was conducted in databases, including MEDLINE/PubMed, Google Scholar, LILACS, SciELO, and ScienceDirect, using the key words "lingual frenum" and "development", as well as their equivalents in Brazilian Portuguese. The literature search yielded 51 papers published between January 1997 and the present date; 14 articles of clinical trials were selected for meeting the inclusion criteria and were read in full. DATA SYNTHESIS: The integrated literature review supported the proposition that some malocclusions are closely related to the presence of ankyloglossia and, although very few clinical trials on this topic have been published so far, there is a consensus among authors concerning the negative effects of functional imbalances over the stomatognathic system's proper growth and development. Half of the studies found state that surgical interventions for releasing the lingual frenum are both safe and effective, concerning improvement in breastfeeding scores. Moreover, 4 out of the 14 studies included in this integrated review, report a negative influence of ankyloglossia over the orofacial muscular system. CONCLUSIONS: There is a consensus among the authors concerning the negative effects of lingual frenulum's anatomic and functional alterations over craniofacial growth and development. The opinion about the early surgical intervention, however, is not unanimous.

OBJETIVO: Avaliar criticamente os artigos existentes na literatura brasileira e estrangeira acerca da influência do frênulo lingual encurtado sobre o crescimento e desenvolvimento do sistema estomatognático, bem como sobre a conquista do equilíbrio forma-função. FONTES DE DADOS: A busca eletrônica nas bases MEDLINE/PubMed, Google Scholar, LILACS, SciELO e ScienceDirect com os descritores "freio lingual" e "desenvolvimento" e seus equivalentes em inglês resultou inicialmente em 51 resultados de trabalhos publicados entre janeiro de 1997 e a presente data. Após aplicados os critérios de exclusão, 14 artigos de estudos clínicos foram selecionados para a leitura completa. SÍNTESE DOS DADOS: A revisão integrativa da literatura ajudou a confirmar a proposição de que algumas maloclusões estão intimamente relacionadas à anquiloglossia. Ainda que a quantidade de estudos clínicos publicados até a atualidade seja pequena, há um consenso entre os autores acerca do efeito negativo de desequilíbrios funcionais sobre o crescimento e o desenvolvimento corretos do sistema estomatognático, tanto que a metade dos estudos pesquisados relata que intervenções cirúrgicas para a liberação do frênulo lingual são seguras e eficazes no que diz respeito à melhora na amamentação. Ainda, dos 14 estudos incluídos nesta revisão, 4 reportam influências negativas da anquiloglossia sobre a musculatura orofacial. CONCLUSÕES: Há um consenso entre os autores acerca dos efeitos negativos das alterações anatômico-funcionais do frênulo lingual sobre o crescimento e o desenvolvimento craniofacial, ainda que a opinião sobre a intervenção cirúrgica precoce não seja unânime.

A influência da anquiloglossia no crescimento e desenvolvimento do sistema estomatognático / Ankyloglossia and its influence on growth and development of the stomatognathic system

RESUMO Objetivo: Avaliar criticamente os artigos existentes na literatura brasileira e estrangeira acerca da influência do frênulo lingual encurtado sobre o crescimento e desenvolvimento do sistema estomatognático, bem como sobre a conquista do equilíbrio forma-função. Fontes de dados: A busca eletrônica nas bases MEDLINE/PubMed, Google Scholar, LILACS, SciELO e ScienceDirect com os descritores "freio lingual" e "desenvolvimento" e seus equivalentes em inglês resultou inicialmente em 51 resultados de trabalhos publicados entre janeiro de 1997 e a presente data. Após aplicados os critérios de exclusão, 14 artigos de estudos clínicos foram selecionados para a leitura completa. Síntese dos dados: A revisão integrativa da literatura ajudou a confirmar a proposição de que algumas maloclusões estão intimamente relacionadas à anquiloglossia. Ainda que a quantidade de estudos clínicos publicados até a atualidade seja pequena, há um consenso entre os autores acerca do efeito negativo de desequilíbrios funcionais sobre o crescimento e o desenvolvimento corretos do sistema estomatognático, tanto que a metade dos estudos pesquisados relata que intervenções cirúrgicas para a liberação do frênulo lingual são seguras e eficazes no que diz respeito à melhora na amamentação. Ainda, dos 14 estudos incluídos nesta revisão, 4 reportam influências negativas da anquiloglossia sobre a musculatura orofacial. Conclusões: Há um consenso entre os autores acerca dos efeitos negativos das alterações anatômico-funcionais do frênulo lingual sobre o crescimento e o desenvolvimento craniofacial, ainda que a opinião sobre a intervenção cirúrgica precoce não seja unânime.

ABSTRACT Objective: To critically examine the existing Brazilian and International scientific literature regarding the influence of short lingual frenulum over growth and development of the stomatognathic system, as well as how it impacts the achievement of the shape-function balance. Data sources: An electronic literature search was conducted in databases, including MEDLINE/PubMed, Google Scholar, LILACS, SciELO, and ScienceDirect, using the key words "lingual frenum" and "development", as well as their equivalents in Brazilian Portuguese. The literature search yielded 51 papers published between January 1997 and the present date; 14 articles of clinical trials were selected for meeting the inclusion criteria and were read in full. Data synthesis: The integrated literature review supported the proposition that some malocclusions are closely related to the presence of ankyloglossia and, although very few clinical trials on this topic have been published so far, there is a consensus among authors concerning the negative effects of functional imbalances over the stomatognathic system's proper growth and development. Half of the studies found state that surgical interventions for releasing the lingual frenum are both safe and effective, concerning improvement in breastfeeding scores. Moreover, 4 out of the 14 studies included in this integrated review, report a negative influence of ankyloglossia over the orofacial muscular system. Conclusions: There is a consensus among the authors concerning the negative effects of lingual frenulum's anatomic and functional alterations over craniofacial growth and development. The opinion about the early surgical intervention, however, is not unanimous.

Tratamento de mordida aberta anterior com terapia miofuncional ­ relato de caso / Myofunctional therapy as treatment for anterior open-bite ­ case report

A mordida aberta anterior pode ser definida como uma discrepância no sentido vertical, na qual há ausência de contato entre os incisivos enquanto em relação cêntrica. É considerada uma má oclusão multietiológica e, dependendo da fase em que é diagnosticada e tratada, apresenta prognóstico desfavorável, culminando em resultados menos estáveis. É uma má oclusão frequente na população infantil e, atualmente, há inúmeras opções de tratamento, dentre eles o Myobrace®, aparelho miofuncional. O objetivo deste artigo consiste em abordar alguns aspectos técnicos sobre esse dispositivo, seguindo-se da apresentação de um caso clínico que descreve o tratamento de uma paciente do sexo feminino, em fase de crescimento, apresentando mordida aberta anterior, cujo tratamento foi realizado exclusivamente com terapia miofuncional (Myobrace® K1, K2 large, I2 e K2 large), por um período de aproximadamente 6 anos. Após este período, pode-se observar a correção da mordida aberta anterior e funções como deglutição e fonação normalizadas e estáveis (AU)

Anterior open-bite is defined as a vertical discrepancy, in which the upper and lower incisors lack contact while in centric relation. It is considered to be a multi-etiological malocclusion with unfavorable prognosis culminating in poorly stable results, depending on how late diagnosis and treatment take place. It is a frequent malocclusion among growing patients, to which there are countless treatment options, being the Myobrace® myofunctional appliances one of them. The article covers a few technical aspects of said appliances, followed by a case report on the anterior open-bite treatment of a growing female, using myofunctional therapy exclusively (Myobrace® K1, K2 large, I2 and K2 large), for approximately 6 years. As result, anterior open-bite correction may be observed as well as normal and stable speech and swallowing functions (AU)

Avaliação da mineralização dos segundos molares inferiores como parâmetro para a classificação da idade biológica / Evaluation of the mineralization of permanent second molars as a parameter to classify the biological age of the individual

O presente trabalho teve como objetivo avaliar se a mineralização dos segundos molares inferiores permanentes pode ser usado como parâmetro para classificar a idade biológica do indivíduo. A amostra foi constituída por 129 radiografias panorâmicas, sendo 71 indivíduos do sexo feminino e 58 indivíduos do sexo masculino, na faixa etária de 7 anos à 12 anos e 1 mês. Para a análise da mineralização dental foi utilizada a tabela proposta por Nolla (1960). Os resultados da análise foram documentados numa planilha do programa Microsoft Excel 2010 contendo o nome completo, data de nascimento, data da tomada radiográfica, idade em anos e meses, número do prontuário, estágio de Nolla (1960) lado direito e lado esquerdo. Foi realizada a análise estatística (Mann-Whitney, Wilcoxon e correlação de Spearman) e pôde-se concluir que na amostra estudada não foi encontrado dimorfismo sexual, que a mineralização dentária ocorre de forma similar do lado direito e esquerdo, e que a mineralização dos segundos molares inferiores permanentes podem ser usadas como parâmetro para estimar a idade biológica e cronológica de um indivíduo.(AU)

This paper aimed to evaluate if the mineralization of permanent second molars can be used as a parameter to classify the biological age of the individual. The sample was composed of 129 panoramic radiographs, being 71 females and 58 males, aged 7 years and 12 years and 1 month. For the analysis of dental mineralization it was used a table proposed by Nolla (1960) with X-rays on the negatoscope (light box). The analysis results were documented in a Excel spreadsheet containing the full name, date of birth, date of the radiographic procedure, age in years and months, medical record number, stage of Nolla (1960) right and left side. Performed a statistical analysis, we concluded in our survey that the tooth mineralization occurs similarly in the right and left side, there is a certain precocity when compared to chronological age and the stage of mineralization in females compared to males. We also conclude that within the same chronological age, girls and boys have different mineralization stages, indicating that the dental mineralization can be used to identify the biological age, and the same is poorly correlated with chronological age.(AU)

Health Information System (HIS) security standards and guidelines history and content analysis / Estudo cronológico e de conteúdo de normas de segurança da informação para Sistemas de Informação em Saúde (SIS) / Estudio cronológico y del contenido de normas de seguridad de información para los Sistemas de Información Sanitaria (SIS)

Objective: This article provides for identification and content study of main standards and guidelines used to support Health Information System (HIS) development. Method: Standards deemed used as reference by SIS developers were list. The different cited standardization organizations' production was assess for history and content analysis. Cited documents were acquire and its contents automatically extracted for study. We manually listed all references to outer content declared within assessed documents. Then, we apply different text analysis methods to decompose, link and correlate the content to disclose inner relationships. Results: Document similarity analysis on standards resulted between 5% to 89%. A total of 440 outer-connections were found. The most influential documents according to Betweeness-Centrality and average-path from these connections were casted. The density found on this graph is 0,6%. Conclusion: This study provided for a better understanding of existing HIS standards.

Objetivo: O objetivo deste trabalho é identificar os principais documentos utilizados como referência para construção de Sistemas de Informação em Saúde (SIS) e estudar seu conteúdo. Método: Identificamos referências utilizadas por desenvolvedores de SIS. Listamos e identificamos cronologicamente a produção das entidades normativas citadas. Adquirimos os documentos citados e em seguida extraímos automaticamente seu conteúdo para estudo. De forma manual, listamos todas as referências internas desses documentos a outras normas. Aplicamos então diferentes métodos de análise de texto para resumir, decompor e correlacionar o teor do conjunto. Resultados: As análises identificaram similaridades entre os documentos, variando de 5% à 89%. Por meio da análise de referências externas, localizamos 440 ligações. As normas mais influenciadoras no conjunto foram elencadas segundo índice Betweeness-Centrality. A densidade dessas ligações entre os documentos é de 0,6%. Conclusão: Por meio de estudo histórico e de conteúdo, promovemos um melhor entendimento de normas existentes.

Objetivo: Este artículo describe el estudio de identificación y contenido de las principales normas y directrices utilizadas para apoyar a lo desarrollo de Sistemas de Información de Salud (SIS). Método: Identificamos las normas utilizadas como referencia por desarrolladores de SIS. Enumerados y identificamos por orden cronológico la producción de los organismos reguladores mencionados. Adquirimos los documentos citados y extraemos automáticamente su contenido para estudiar. Manualmente, listamos todas las referencias internas de estos documentos mencionando otras publicaciones. Em seguida, aplicamos diferentes métodos de análisis de texto para resumir, descomponer y correlacionar todo el contenido. Resultes: Análisis de similitud documento de estándares resultó entre 5 % a 89 %. Se encontró un total de 440 conexiones externas a ellos. Se descubrió los documentos más influyentes según métrica Betweenes-Centrality. La densidad medida en esta red es del 0,6%. Conclusión: Através del estudio histórico y de contenido de normas existentes, logramos a promover su mejor comprensión.

Non-Integrated Information and Communication Technologies in the Kidney Transplantation Process in Brazil.

The entire kidney transplantation process in Brazil is defined through laws, decrees, ordinances, and resolutions, but there is no defined theoretical map describing this process. From this representation it's possible to perform analysis, such as the identification of bottlenecks and information and communication technologies (ICTs) that support this process. The aim of this study was to analyze and represent the kidney transplantation workflow using business process modeling notation (BPMN) and then to identify the ICTs involved in the process. This study was conducted in eight steps, including document analysis and professional evaluation. The results include the BPMN model of the kidney transplantation process in Brazil and the identification of ICTs. We discovered that there are great delays in the process due to there being many different ICTs involved, which can cause information to be poorly integrated.

Comparative study on direct and indirect bracket bonding techniques regarding time length and bracket detachment.

OBJECTIVE: The aim of this study was to assess the time spent for direct (DBB - direct bracket bonding) and indirect (IBB - indirect bracket bonding) bracket bonding techniques. The time length of laboratorial (IBB) and clinical steps (DBB and IBB) as well as the prevalence of loose bracket after a 24-week follow-up were evaluated. METHODS: Seventeen patients (7 men and 10 women) with a mean age of 21 years, requiring orthodontic treatment were selected for this study. A total of 304 brackets was used (151 DBB and 153 IBB). The same bracket type and bonding material were used in both groups. Data were submitted to statistical analysis by Wilcoxon non-parametric test at 5% level of significance. RESULTS: Considering the total time length, the IBB technique was more time-consuming than the DBB (p < 0.001). However, considering only the clinical phase, the IBB took less time than the DBB (p < 0.001). There was no significant difference (p = 0.910) for the time spent during laboratorial positioning of the brackets and clinical session for IBB in comparison to the clinical procedure for DBB. Additionally, no difference was found as for the prevalence of loose bracket between both groups. CONCLUSIONS: The IBB can be suggested as a valid clinical procedure since the clinical session was faster and the total time spent for laboratorial positioning of the brackets and clinical procedure was similar to that of DBB. In addition, both approaches resulted in similar frequency of loose brackets.

Comparative study on direct and indirect bracket bonding techniques regarding time length and bracket detachment

OBJECTIVE: The aim of this study was to assess the time spent for direct (DBB - direct bracket bonding) and indirect (IBB - indirect bracket bonding) bracket bonding techniques. The time length of laboratorial (IBB) and clinical steps (DBB and IBB) as well as the prevalence of loose bracket after a 24-week follow-up were evaluated. METHODS: Seventeen patients (7 men and 10 women) with a mean age of 21 years, requiring orthodontic treatment were selected for this study. A total of 304 brackets were used (151 DBB and 153 IBB). The same bracket type and bonding material were used in both groups. Data were submitted to statistical analysis by Wilcoxon non-parametric test at 5% level of significance. RESULTS: Considering the total time length, the IBB technique was more time-consuming than the DBB (p < 0.001). However, considering only the clinical phase, the IBB took less time than the DBB (p < 0.001). There was no significant difference (p = 0.910) for the time spent during laboratorial positioning of the brackets and clinical session for IBB in comparison to the clinical procedure for DBB. Additionally, no difference was found as for the prevalence of loose bracket between both groups. CONCLUSION: the IBB can be suggested as a valid clinical procedure since the clinical session was faster and the total time spent for laboratorial positioning of the brackets and clinical procedure was similar to that of DBB. In addition, both approaches resulted in similar frequency of loose bracket.

OBJETIVO: avaliar o tempo necessário para realização da colagem de braquetes pelas técnicas direta (CDB) e indireta (CIB), mensurando o tempo despendido entre a parte laboratorial (CIB) e a parte clínica (CDB e CIB), e a prevalência de descolamentos durante o período de observação de 24 semanas. MÉTODOS: dezessete pacientes (7 homens e 10 mulheres), com idade média de 21 anos, com necessidade de tratamento ortodôntico, foram selecionados para participar desse estudo. Foram utilizados um total de 304 braquetes, sendo que 151 foram colados pela técnica de CDB e 153 pela CIB, com o mesmo tipo de braquete e material de colagem. Os dados foram submetidos ao teste não paramétrico de Wilcoxon, com significância de 5%. RESULTADOS: o tempo total para realização da CIB foi maior em relação à CDB (p < 0,001). Levando em consideração apenas a fase clínica, foi observado que o tempo para CIB foi menor em relação a CDB (p < 0,001). A comparação entre o tempo despendido para o posicionamento dos braquetes em laboratório mais o tempo em clínica para CIB com o tempo em clínica para a CDB revelou que não houve diferença significativa (p = 0,910), nem tampouco quanto à prevalência de descolamento dos braquetes. CONCLUSÃO: a CIB apresenta-se como uma utilidade clínica singular, pois o tempo em clínica foi menor que o da CDB. O tempo despendido no posicionamento dos braquetes no laboratório e de execução clínica da CIB foi semelhante ao tempo gasto pela CDB, a quantidade de descolamentos foi semelhante entre as técnicas.

Correlation between transverse and vertical measurements in Brazilian growing patients, evaluated by Ricketts-Faltin frontal analysis.

INTRODUCTION: Currently in orthodontic diagnosis, besides the lateral cephalometric analysis which evaluates the anteroposterior and vertical direction, the frontal analysis may be added, leading us to another important dimension in space: the transverse dimension. OBJECTIVE: Few longitudinal samples with the frontal radiograph were published, so this cephalometric study was designed to correlate the transversal and vertical measures by Ricketts-Faltin frontal analysis into two radiographic times. METHODS: The sample consisted of 45 Brazilian children, 25 girls and 20 boys, all presenting mixed dentition, with balanced facial aesthetics and no previous orthodontic/orthopedic treatment. The initial average age (T1) was 7.7 years and the final (T2) 13.3 years. The measurements evaluated were: FTD, MxTD, NTD, LITD, MdTD (transversal), OVD and TVD (vertical). RESULTS: All transversal measures were positively correlated with a medium or high correlation with each other and the vertical measurements; only LITD presented a low correlation with these measurements. CONCLUSIONS: It was concluded that the face has interdependent regions and that this feature remains with growth.

Correlation between transverse and vertical measurements in Brazilian growing patients, evaluated by Ricketts-Faltin frontal analysis

INTRODUCTION: Currently in orthodontic diagnosis, besides the lateral cephalometric analysis which evaluates the anteroposterior and vertical direction, the frontal analysis may be added, leading us to another important dimension in space: the transverse dimension. OBJECTIVE: Few longitudinal samples with the frontal radiograph were published, so this cephalometric study was designed to correlate the transversal and vertical measures by Ricketts-Faltin frontal analysis into two radiographic times. METHODS: The sample consisted of 45 Brazilian children, 25 girls and 20 boys, all presenting mixed dentition, with balanced facial aesthetics and no previous orthodontic/orthopedic treatment. The initial average age (T1) was 7.7 years and the final (T2) 13.3 years. The measurements evaluated were: FTD, MxTD, NTD, LITD, MdTD (transversal), OVD and TVD (vertical). RESULTS: All transversal measures were positively correlated with a medium or high correlation with each other and the vertical measurements; only LITD presented a low correlation with these measurements. CONCLUSION: It was concluded that the face has interdependent regions and that this feature remains with growth.

INTRODUÇÃO: atualmente no diagnóstico ortodôntico, além da análise cefalométrica lateral - que avalia os sentidos anteroposterior e vertical -, deve-se acrescentar a análise no sentido frontal, a qual propicia outra dimensão importante no espaço, a transversal. OBJETIVO: poucas são as amostras longitudinais publicadas utilizando telerradiografias frontais; portanto, o presente estudo cefalométrico teve o intuito de correlacionar as medidas transversais e verticais por meio da análise frontal de Ricketts-Faltin, em dois tempos radiográficos. MÉTODOS: a amostra constou de 45 crianças brasileiras, sendo 25 meninas e 20 meninos, todos apresentando dentição mista, com perfil harmonioso e sem nunca terem sido tratadas ortodonticamente e/ou ortopedicamente. A idade média inicial (T1) foi de 7,7 anos e a final (T2) de 13,3 anos. As medidas avaliadas foram: DTF, DTMx, DTN, DTII e DTMd (transversais); DVO e DVT (verticais). RESULTADOS: todas as medidas transversais estavam correlacionadas positivamente, em grau médio ou forte, entre si e com as medidas verticais; somente DTII estava correlacionada em grau fraco com essas medidas. CONCLUSÃO: concluiu-se que a face possui regiões interdependentes, e assim mantém-se mesmo com o crescimento.

Morphometric analysis of treatment effects of the Balters bionator in growing Class II patients.

OBJECTIVE: To investigate the effects of the standard (Class II) Balters bionator in growing patients with Class II malocclusion with mandibular retrusion by using morphometrics (thin-plate spline [TPS] analysis). MATERIALS AND METHODS: Thirty-one Class II patients (17 male and 14 female) were treated with the Balters bionator (bionator group). Mean age at the start of treatment (T0) was 10.3 years, while it was 13 years at the end of treatment (T1). Mean treatment time was 2 years and 2 months. The control group consisted of 22 subjects (14 male and 8 female) with untreated Class II malocclusion. Mean age at T0 was 10.2 years, while it was 12.2 years at T1. The observation period lasted 2 years on average. TPS analysis evaluated statistical (permutation tests) differences in the craniofacial shape and size between the bionator and control groups. RESULTS: Through TPS analysis (deformation grids) the bionator group showed significant shape changes in the mandible that could be described as a mandibular forward and downward displacement. The control group showed no statistically significant differences in the correction of Class II malocclusion. CONCLUSIONS: Bionator appliance is able to induce significant mandibular shape changes that lead to the correction of Class II dentoskeletal disharmony.

Estudo preliminar in vivo da magnitude de força gerada na expansão rápida da maxila (ERM) / An in vivo preliminary study of force magnitude generated in rapid maxillary expansion (RME)

A expansão rápida da maxila (ERM) sempre despertou grande interesse nos pesquisadores da área da Ortodontia e Ortopedia facial ao longo dos anos por ser um dos procedimentos mais empregados na especialidade. Além disso, as atresias maxilares desenvolvem-se de uma maneira precoce sem autocorreção espontânea. A magnitude de força expansiva e suas implicações durante o procedimento clínico de ERM permanecem questionáveis até hoje. O presente estudo tem como objetivo avaliar a magnitude e o comportamento da força expansiva durante a ERM nas fases das dentições mista e permanente jovem. Esta amostra inicial foi composta por 4 pacientes brasileiros, do gênero feminino, e que foram separados em dois grupos de acordo com suas fases de dentição: Grupo I, composto de dois pacientes com dentição mista e Grupo II composto de dois pacientes com dentição permanente jovem. O aparelho utilizado no estudo foi um disjuntor palatino do tipo McNamara. O protocolo de ativação foi de duas ativações diárias. Os resultados obtidos permitem concluir que o comportamento das forças expansivas ao longo do procedimento variou longitudinalmente, individualmente e entre os grupos experimentais. Observa-se ainda que a força máxima expansiva mensurada no Grupo I foi de 65N e no Grupo II de 78N.

Rapid maxillary expansion (RME) is a largely employed procedure and therefore it has always aroused great interest of researchers in the Orthodontic and facial Orthopedics fields. In addition, maxillary constrictions have an early development and are hardly self corrected. The aim of this preliminary study was to assess the magnitude and behavior of the expansive force during RME in mixed and young permanent dentition. The sample consisted of 4 Brazilian female patients, who were sorted in two groups: Group I, two patients with mixed dentition and Group II, two patients, with young permanent dentition. The appliance utilized in this study was a McNamara palatal distractor. The activation protocol included two daily activations. Results acquired allow for the conclusion that the behavior of expanding forces along the procedure has varied in longitudinal manner, individually and between the experimental groups. And they have also determined that the maximum expanding force measured in Group I was 65N, and in the Group II it was 78N.