Factors associated with the impact of fixed appliance orthodontic treatment on the oral health-related quality of life of adolescents: Assessment using a condition-specific instrument.

Background: Oral outcomes may have an impact on quality of life. The aim of this study was to assess factors associated with the impact of fixed appliance orthodontic treatment on the oral health-related quality of life (OHRQoL) of adolescents. Material and Methods: Individuals aged 10 to 18 years undergoing orthodontic treatment were included. Data regarding adolescents' sex and age, parental schooling, family income, and number of individuals who depend on income were collected. Clinical variables, orthodontic tooth extraction and malocclusion severity were also analyzed. OHRQoL was assessed with a questionnaire with items distributed across nine domains: aesthetics, functional limitation, diet, hygiene, maintenance, physical impact, social impact, time constraints, and transport/cost inconveniences. The higher the score, the more negative the adolescent's perception of his/her OHRQoL. Statistical analysis was performed. Results: Seventy-five adolescents participated. Individuals aged ≤12 years had a more negative perception of the diet domain (p=0.026). Individuals whose parents/guardians had ≥8 years of schooling had a more negative perception of the impact on the hygiene domain (p<0.024). Individuals whose families had an income of ≤2 salaries had a more negative perception of the maintenance domain (p=0.016). Girls had a more negative perception of the physical impact domain (p<0.018). Girls (p=0.011), adolescents whose families had an income of ≤2 salaries (p=0.003), and adolescents who had severe malocclusion (p=0.026) had a more negative perception of the transport/cost inconveniences domain. Girls had a significantly higher overall score in response to the questionnaire than boys (p=0.041). Conclusions: Adolescents' sex, age, and malocclusion as well as parental education and family income were associated with the impact of orthodontic treatment on adolescents' OHRQoL. Key words:Adolescent, Quality of life, Orthodontic treatment, Fixed appliance.

Avaliação do conhecimento dos ortodontistas sobre movimentação ortodôntica em dentes traumatizados / Evaluation of orthodontists' knowledge concerning orthodontic movement in traumatized teeth

Resumo O presente estudo teve como objetivo avaliar o conhecimento dos ortodontistas inscritos na Associação Brasileira de Ortodontia e Ortopedia Facial ­ Seção Minas Gerais (ABOR/MG) sobre a movimentação ortodôntica de dentes traumatizados. A pesquisa foi realizada por meio de um questionário eletrônico desenvolvido na plataforma Google Forms® e enviado via e-mail. O questionário foi baseado no trabalho de Tondelli et al.1 (2010), composto por 21 questões objetivas, o qual foi dividido em 3 partes: a parte 1 abordou os dados demográficos dos participantes; a parte 2 coletou informações a respeito do conhecimento sobre traumatismo dentoalveolar e a parte 3 buscou avaliar o conhecimento dos profissionais em relação à movimentação ortodôntica de dentes traumatizados. A amostra consistiu de 93 (32%) de 289 ortodontistas registrados na ABOR/MG que responderam voluntariamente ao questionário, sendo 52,7% do sexo masculino e 47,3% do sexo feminino. Quanto à formação, a maioria (58,1%) apresentava o curso de Especialização concluído, 34,4% tinham concluído Mestrado ou Doutorado. A maior parte da amostra tinha mais de 10 anos de exercício da Ortodontia (50,5%). Do total, 53,8% afirmaram que praticam exclusivamente Ortodontia em seu consultório e 91,4% responderam que já atenderam pacientes com traumatismo dentário. No entanto, 21,5% afirmaram que apenas às vezes perguntam sobre história prévia de dentes traumatizados. O tipo de trauma com respostas mais assertivas foi avulsão (95,7%), enquanto subluxação, foi a que teve menos respostas adequadas (75,3%). A maioria dos ortodontistas possui um nível de conhecimento considerado satisfatório em relação às classificações de traumas dentários. Porém, a conduta em relação à movimentação ortodôntica destes dentes ainda é inadequada e uma maior capacitação desses profissionais torna-se necessária para levar ao correto tratamento e ao melhor prognóstico do paciente com traumatismo dentário (AU)

Abstract The aim of the present study was to evaluate the knowledge of orthodontists of the Brazilian Orthodontics and Facial Orthopedics Association ­ Minas Gerais section (ABOR/MG) in relation to orthodontic movement of traumatized teeth. The research was conducted with an electronic questionnaire answered through the Google Forms® platform and sent to the participants by e-mail. A number of 21 objective questions, based on Tondelli's et al.1 (2010) work, were divided into 3 parts: the profile data of the professionals composed part 1; part 2 collected information on the knowledge of dentoalveolar trauma; and part 3 evaluated the professional's knowledge in relation to the orthodontic movement of traumatized teeth. The sample of the study was a total of 289 orthodontists registered in the ABOR/MG association: 93 of these answered the questionnaire (32%), in which 51% were men and 49% were women. In terms of professional qualification and education, most participants (58,1%) had Specialization and 53,8% had more than 10 years of experience in the area of Orthodontics. In total, 53,8% declared having practiced exclusively Orthodontics in their clinics and 91,4% have already treated patients with dental trauma. However, 21,5% affirmed that only sometimes they ask the patients about the previous trauma history. The type of trauma with the most correct answers was avulsion (95,7%) and subluxation was the lesion with the lowest number of adequate response (75,3%). Most orthodontics has a level of knowledge in regard to dental trauma considered to be satisfactory. On the other hand, their conduct in orthodontic movement is inadequate and more capacitation and training of these professionals are necessary for the correct treatment and prognosis of the traumatized patient. (AU)

Influence of heat treatment on the mechanical properties of CrNi stainless steel orthodontic wires.

INTRODUCTION: The heat treatment of stainless steel wires is a routine clinical procedure adopted by many dentists in order to relieve the stress caused after performing bends in the archwire. OBJECTIVE: This study aimed to evaluate the influence of heat treatment of stainless steel archwires with a rectangular section of 0.016 x 0.022'-in. METHODS: For analysis of the dimensional stability, the anterior and posterior dimensions of forty 0.016 x 0.022-in stainless steel orthodontic archwires without heat treatment and 30 days after heat treatment were evaluated. For analysis of the mechanical properties, 12 stainless steel wire segments with the same rectangular section without heat treatment and 30 days after heat treatment were tested through tensile strength and strain tests. To evaluate if there were differences between the anterior and posterior dimensions, the results were analyzed by the Student's t-test. To compare the tensile strength and strain between the groups, the ANOVA test was used. The level of significance adopted was 95% (p< 0.05). RESULTS: The heat treatment did not stop the expansion of archwires 30 days after their preparation, and there was no statistical difference in the tensile strength and strain tests with and without heat treatment. CONCLUSION: From the findings of this study, it can be conclude that the mechanical behavior of heat-treated stainless steel archwires is similar to that of archwires not subjected to heat treatment.

Influence of heat treatment on the mechanical properties of CrNi stainless steel orthodontic wires

ABSTRACT Introduction: The heat treatment of stainless steel wires is a routine clinical procedure adopted by many dentists in order to relieve the stress caused after performing bends in the archwire. Objective: This study aimed to evaluate the influence of heat treatment of stainless steel archwires with a rectangular section of 0.016 x 0.022'-in. Methods: For analysis of the dimensional stability, the anterior and posterior dimensions of forty 0.016 x 0.022-in stainless steel orthodontic archwires without heat treatment and 30 days after heat treatment were evaluated. For analysis of the mechanical properties, 12 stainless steel wire segments with the same rectangular section without heat treatment and 30 days after heat treatment were tested through tensile strength and strain tests. To evaluate if there were differences between the anterior and posterior dimensions, the results were analyzed by the Student's t-test. To compare the tensile strength and strain between the groups, the ANOVA test was used. The level of significance adopted was 95% (p< 0.05). Results: The heat treatment did not stop the expansion of archwires 30 days after their preparation, and there was no statistical difference in the tensile strength and strain tests with and without heat treatment. Conclusion: From the findings of this study, it can be conclude that the mechanical behavior of heat-treated stainless steel archwires is similar to that of archwires not subjected to heat treatment.

RESUMO Introdução: o tratamento térmico de fios de aço inoxidável é um procedimento clínico rotineiro adotado por muitos cirurgiões-dentistas para aliviar o estresse causado após a confecção de dobras no fio. O presente estudo avaliou a influência do tratamento térmico em fios de aço inoxidável com secção retangular de 0,016'' x 0,022''. Métodos: para análise da estabilidade dimensional, foram avaliadas as dimensões anteriores e posteriores de 40 arcos ortodônticos de aço inoxidável de 0,016'' x 0,022'' sem tratamento térmico e 30 dias após o tratamento térmico. Para análise das propriedades mecânicas, 12 segmentos de fio de aço inoxidável com a mesma secção retangular sem tratamento térmico e 30 dias após o tratamento térmico foram analisadas por testes de resistência à tração e tensão. Para verificar se houve diferenças entre as dimensões anteriores e posteriores, os resultados foram analisados pelo teste t de Student. Para comparar a resistência à tração e tensão entre os grupos, foi utilizado o teste ANOVA. O nível de significância adotado foi 95% (p< 0,05). Resultados: o tratamento térmico não interrompeu a expansão dos fios 30 dias após seu preparo, e não houve diferença estatística nos testes de resistência à tração e tensão com e sem o tratamento térmico. Conclusão: pelos achados desse estudo, conclui-se que o comportamento mecânico de fios submetidos a tratamento térmico é semelhante ao de fios de aço não submetidos ao tratamento térmico.

Abordagem ortodôntica de anquilose resultante de traumatismo dentário ­ relato de caso / Orthodontic approach of ankylosis resulting from dental trauma ­ case report

Resumo As lesões dentárias traumáticas ocorrem com grande frequência na Odontologia, sendo dever do cirurgião-dentista saber diagnosticá-las e as tratar com precisão e rapidez. Uma das lesões mais raras e de difícil tratamento é a luxação intrusiva, na qual o elemento traumatizado é levado em direção axial. Para tratamento, na maioria dos casos, é recomendado aguardar a reerupção passiva do mesmo e, em caso de insucesso, realizar o tracionamento ortodôntico ou cirúrgico. Uma das possíveis consequências da luxação intrusiva é a anquilose dentária, caracterizada pela fusão da raiz ao osso, gerando a imobilidade do elemento traumatizado. Não há como parar ou reverter o processo de anquilose. Portanto é necessário realizar alguma interceptação, existindo diversos tipos de tratamentos para dentes anquilosados. Os planos de tratamento devem ser planejados e discutidos em conjunto com o paciente, explicando suas vantagens e desvantagens até obter o prognóstico mais favorável, incluindo as necessidades e anseios do mesmo. O artigo em questão traz o relato de um caso clínico de um incisivo central superior permanente que sofreu luxação intrusiva e em que após a tentativa de tracionamento ortodôntico realizada, observou-se a anquilose dentária. Para tratamento de escolha foi realizada a extração do elemento anquilosado e reposicionamento dos elementos adjacentes, seguidos de reanatomização dentária. Serão discutidos quais os benefícios e malefícios desse tipo de tratamento.(AU)

Abstract Traumatic dental injuries occur frequently in Dentistry, and it is the dental surgeon's duty to know how to diagnose and treat them accurately and quickly. One of the rarest and most difficult to treat lesions is the intrusive luxation, in which the traumatized element is taken to the axial position. For treatment, in most cases it is recommended to wait for the passive reerection of the same, and, in case of failure, to perform the orthodontic or surgical traction. One of the possible consequences of the intrusive luxation is dental ankylosis, characterized by fusion of the root to the bone, generating immobility of the traumatized element. There is no way to stop or reverse the ankylosis process. Therefore, it is necessary to perform some interception, there are several types of treatments for ankylosed teeth. Treatment plans should be planned and discussed together with the patient, explaining their advantages and disadvantages until the most favorable prognosis is achieved, including the patient's needs and desire. The article reports a clinical case of a permanent maxillary central incisor that suffered intrusive luxation and that after orthodontic traction performed with failure, resulted in dental ankylosis. For treatment of choice the extraction of the ankylosed element and repositioning of the adjacent elements was carried out, followed by dental reanatomization. The pros and cons of this type of treatment will be discussed. (AU)

Tratamento ortodôntico em pacientes com periodontite agressiva: considerações clínicas / Orthodontic treatment in patients with aggressive periodontitis: clinical considerations

O objetivo desse trabalho foi confrontar as abordagens dos tratamentos envolvendo periodontite agressiva e ortodontia através de uma revisão de literatura baseada em artigos de condutas clínicas. Foi realizada uma busca na base de dados PubMed, retroativa a 10 anos e utilizando palavras-chave Mesh. Ao final da seleção, resultaram 13 artigos de casos clínicos e um artigo com uma série de casos. A maioria envolveu pacientes jovens e mulheres, e todos realizaram tratamento periodontal e ortodôntico para controle da periodontite agressiva. A perda óssea severa não contraindica o uso de aparelho ortodôntico, e a movimentação dentária associada com um intenso controle periodontal apresenta-se como uma forma de sucesso no tratamento da doença.

The aim of this study was to elucidate treatment approaches involving aggressive periodontitis and orthodontics through a literature review based on articles of clinical procedures. A search was conducted in PubMed database using MeSH key words and limited to the past 10 years. The appropriate studies were selected and resulted in 13 papers of single case reports and one paper including four case reports. The majority of the cases involved young patients and women, and all underwent orthodontic and periodontal treatment to control aggressive periodontitis. Severe bone loss does not contraindicate the use of braces and tooth movement together with an appropriate periodontal control presents a way to successfully treat the disease.

Influence of fixed appliances on two-phase orthopedic-orthodontic treatment

Aim: The purpose of this retrospective study was to investigate the effects of phase 2 with fixed appliances, after phase 1 Bionator treatment of Class II division 1 malocclusion, as compared to a matching control group. Methods: The experimental group consisted of 20 patients who were evaluated after orthodontic treatment with fixed appliances subsequently to functional therapy with the Bionator in phase 1. A control group consisting of 20 Class II, division 1 individuals. Results: During phase 1 there was significant forward growth restriction in the maxillary complex, improvement of the maxillomandibular relationship and decrease in facial convexity. There was also significant reduction of the maxillary incisor proclination and protrusion, protrusion of the mandibular incisors, and vertical development of the mandibular molars. The overjet was significantly reduced and the molar relationship was significantly improved. Treatment during phase 2, with fixed appliances, resulted in significant maxillary forward growth restriction and facial convexity reduction. Conclusion: Major Class II skeletal and dentoalveolar anteroposterior correction was obtained during phase 1, with the Bionator. Phase 2, with fixed appliances only produced a significant maxillary forward growth restriction and facial convexity reduction, without any significant dentoalveolar change

Mini-implante como estratégia de tratamento para reabilitação protética temporária ­ relato de caso / Mini-implant as treatment strategy for temporary prosthetic rehabilitation ­ case report

A avulsão de incisivos permanentes gera um problema estético e funcional para o paciente e seu manejo clínico representa um desafio na odontologia. O sucesso do tratamento depende de vários fatores como a idade do paciente, a quantidade e qualidade óssea da região edêntula, a discrepância óssea e o tipo de maloclusão encontrada. Ressalta-se a importância de minimizar efeitos colaterais nas unidades de ancoragem, garantindo ao mesmo tempo função e estética ao longo dos tratamentos ortodôntico e protético, requeridos na maioria dos casos. O objetivo desse artigo é apresentar através de um relato de caso a versatilidade dos mini-implantes na reabilitação temporária de incisivos permanentes em indivíduos em fase de crescimento e desenvolvimento facial. Um menino de 9 anos que apresentava relação de molar em Classe I e mesialização dos incisivos laterais, caninos e pré-molares superiores devido à ausência dos incisivos centrais superiores, que foram avulsionados, foi tratado. Ao final de 1 ano e 8 meses de tratamento, pôde-se estabelecer uma intercuspidação dentária aceitável e espaço adequado para confecção das coroas provisórias sobre os parafusos. O acompanhamento radiográfico foi realizado através de radiografias periapicais e panorâmicas. Na literatura,estudos mostram que os mini-implantes contribuem para a manutenção da quantidade e qualidade óssea do processo alveolar, reduzindo a necessidade de futuras cirurgias de enxerto antes da fixação dos implantes osseointegrados. Dessa forma, esse caso mostrou que a ancoragem esquelética com mini-implantes ortodônticos autoperfurantes auxilia na reabilitação de pacientes que ainda não possuem uma idade óssea suficiente para receberem implantes dentários osseointegrados.(AU)

The avulsion of permanent incisors creates an esthetic and functional problem for the patient and its clinical management is a challenge in dentistry. Treatment success depends on several factors such as patient age, the quantity and quality of edentulous bone area, bone discrepancy and the type of malocclusion found. The importance of minimizing side effects in the anchoring units should be emphasized, while ensuring function and esthetics during the orthodontic and prosthetic treatment required in most cases. The aim of this paper is to present through a case report the versatility of mini-implants in the temporary rehabilitation of permanent incisors in individuals in the growth and facial development phase. A 9-yearold boy who had molar relationship in Class I and mesial movement of the lateral incisors, canines and premolars due to the absence of the elements 11 and 21, which were avulsed, was treated. After 1 year and 8 months of treatment, it was possible to establish an acceptable dental intercuspidation and enough space for the manufacturing of pontics on the screws. The radiographic monitoring was performed by periapical and panoramic radiographies. In literature studies show that the mini-implants contribute to the maintenance of bone quantity and quality of the alveolar process, reducing the need for future bone grafting surgeries before fixation of dental implants. So this case showed that the skeletal anchorage with selfdrilling orthodontic mini-implants helps in the rehabilitation of patients who lack sufficient bone age to receive osseointegrated dental implants.(AU)

Validação de um software para a estimação da idade óssea por meio das vértebras cervicais / Validation of software for a bone age patient through the cervical vertebrae

Objetivo: o objetivo deste estudo é a validação de um software (Easy Age) para avaliar a maturação óssea por meio das vértebras cervicais, demonstrando sua aplicabilidade e reprodutibilidade. Métodos: a amostra constou de 500 telerradiografias em norma lateral de pacientes de ambos os sexos, dos 7 aos 15 anos de idade, que foram examinadas por 3 avaliadores, duas vezes para o método visual e duas vezes com o software. Resultados: para avaliar a concordância inter e intra-examinador, aplicou-se o teste de concordância Kappa, que mostrou um nível substancial de concordância para a avaliação visual das vértebras cervicais, enquanto que para a avaliação das vértebras cervicais por meio do software, mostrou um nível quase perfeito de concordância para todos os avaliadores. No teste de Friedman, aplicado para comparar as avaliações entre o 1º e o 2º exame visual e entre o 1º e o 2º exame por meio do software, não houve diferenças significativas. Para validação do software foi realizada a comparação entre os resultados obtidos pelo método visual e pelo software, pelo teste de correlação de Spearman, e os valores entre o 1º e o 2º exame visual e entre o 1º e o 2º exame software mostraram correlação forte, estatisticamente significante, entre as medições dos exames visuais e do software. Conclusão: conclui-se assim que o software é válido e melhorou a aplicabilidade e a reprodutibilidade do método de estimação da idade óssea.(AU)

Aim: The present study aimed to validate a software (Easy Age) to assess skeletal maturation by cervical vertebrae, demonstrating its applicability and reproducibility. Methods: For this, the sample consisted of 500 lateral radiographs of patients of both genders, from 7 to 15 years of age, who were examined by three evaluators, twice for the visual method and twice with the software. To evaluate the inter- and intra-examiner agreement, the Kappa test was applied, which showed a substantial level of agreement for the visual assessment of the cervical vertebrae, while the evaluation of the cervical vertebrae through the software showed a level that presented almost perfect agreement for all evaluators. Friedman's test was applied to compare the ratings between the 1st and 2nd visual examinations and between the 1st and 2nd examinations using the software, which presented no significant differences. To validate the software, a comparison was performed between the results obtained by the visual method and those obtained by the software, using the Spearman correlation test. Results: The results showed a strong, statistically significant correlation between the measurements from the visual examination and those from the software evaluation. Conclusion: It can therefore be concluded that the software is valid and improved the applicability and reproducibility of the method of estimating skeletal age.(AU)

Oral management of Marfan syndrome: an overview and case report.

Marfan syndrome is an autosomal-dominant genetic disorder that affects connective tissues. Diagnosis is based on genetic history as well as major and minor clinical criteria. This article presents a case of Marfan syndrome, emphasizing the clinical manifestations of the disease, and provides an overview of oral management. Knowledge of the etiopathologic and clinical aspects of this condition is essential to providing dental treatment aimed at improving the quality of life of affected individuals.

Análise dimensional de moldes de alginato após armazenagem / Dimensional analysis of alginate molds after storage

Objetivo: O objetivo neste trabalho foi avaliar a estabilidade dimensional de moldes de dois diferentes alginatos (Cavex Color Change®, Cavex Holland BV, Netherlands; Hydrogum®5, Zhermack, Italy), armazenados em diferentes intervalos de tempo, utilizando dois dispositivos diferentes (D1 e D2 - figuras 1 e 2 respectivamente). Métodos: Após a manipulação e presa completa dos alginatos, foram realizadas medidas diretamente nos moldes dos alginatos, nos tempos T0, T1, T2, T3, T4 e T5 (imediatamente, 30 minutos, 2 horas, 24 horas, 48 horas e 120 horas, respectivamente), para cálculo do percentual de alteração dimensional dos moldes em cada dispositivo. Os dados foram analisados pelo testes Two-Way ANOVA e Tukey, com nível de significância de 5%. Resultados: A análise estatística mostrou diferença entre os tempos (F=29,956; p<0,001), mas não houve diferença entre os alginatos (F=3,155; p=0,076) para o dispositivo 1. Em relação ao dispositivo 2, houve diferença tanto em relação aos tempos (F=21,495; p<0,001) quanto em relação aos alginatos (F=5,595; p=0,015). Conclusões: Os alginatos testados podem ser armazenados com segurança somente por até duas horas após sua presa.(AU)

Risk variables of external apical root resorption during orthodontic treatment

INTRODUCTION: External apical root resorption (EARR) is an adverse outcome of the orthodontic treatment. So far, no single or associated factor has been identified as responsible for EARR due to tooth movement. OBJECTIVE: This study investigated the association of risk variables (age, gender, extraction for orthodontic treatment and Angle classification) with EARR and orthodontic treatment. METHOD: The sample (n=72) was divided into two groups according to presence (n=32) or absence (n=40) of EARR in maxillary central and lateral incisors after orthodontic treatment. RESULTS: There were no statistically significant differences in EARR according to age, gender, extraction or type of malocclusion (p>0.05). CONCLUSION: The risk variables examined were not associated with EARR in the study population.

Management of multiple trauma avulsion of anterior primary teeth: a three-year follow-up.

Dental trauma can cause physical, esthetic, and psychological problems. This paper presents the case of a 2-year-old boy who suffered multiple avulsions of the maxillary anterior teeth. Treatment consisted of fixed orthodontic appliances with artificial anterior teeth. The clinical follow-up lasted for three years. The procedure for the re-establishment of esthetic and dental function was based on a simple, low-cost therapeutic solution. The child and parents were satisfied with the treatment results.

Association of functional gene polymorphism IL-1beta in patients with external apical root resorption.

INTRODUCTION: External apical root resorption (EARR) is a frequent complication of orthodontic treatment. Interleukin 1beta (IL-1beta) is a potent stimulus for bone resorption and osteoclastic cell recruitment during orthodontic tooth movement. The purpose of this study was to assess the association between a polymorphism in the IL-1beta genes and EARR during orthodontic treatment. METHODS: The sample included 61 Brazilian orthodontic patients, divided into 2 groups according to the presence (affected group, n = 23) or absence (control group, n = 38) of EARR in the central and lateral maxillary incisors in the posttreatment period. DNA was obtained from buccal swab cells. The polymorphism was analyzed by the polymerase chain reaction followed by digestion with restriction enzyme. The polymerase chain reaction products were analyzed in 10% polyacrylamide gel and stained with silver. RESULTS: There were significant statistical differences (P <0.05) among the frequencies of the alleles and genotypes of the IL-1beta gene polymorphism between the affected and unaffected groups, suggesting that allele 1 predisposed the subjects to EARR (odds ratio = 4.0). CONCLUSIONS: The polymorphism of the IL-1beta gene is associated with root resorption in the studied population.

Orthodontic treatment for adults--dental displacement: a case report.

A growing number of adults are seeking orthodontic treatment. These patients require a different treatment approach than younger patients receive. Treatment of adult patients with dental-skeletal and facial abnormalities is not restricted to surgical correction alone; it also involves dental displacement. This case report illustrates how proper facial analysis and correct diagnosis relates to the planning of orthodontic treatment. In addition, it outlines the importance of informing patients about the risks and benefits of possible treatment modalities.

Esterilização em Ortodontia: eficácia do esterilizador com esferas de vidro / Sterilization in Orthodontics: effectiveness of glass bead sterilizers

OBJETIVO: avaliar a efetividade do esterilizador com esferas de vidro Steri® 350, quanto ao controle de infecção das partes ativas dos alicates ortodônticos. METODOLOGIA: foram utilizados nove alicates ortodônticos, previamente esterilizados em autoclave à temperatura de 121ºC, durante 20 minutos. Posteriormente, as partes ativas dos alicates foram contaminadas com Bacillus stearothermophilus. Logo após, as pontas dos alicates foram colocadas no Steri® 350, durante os períodos de 3, 5, 10, 15, 20, 30 e 40 segundos, em temperatura de 255ºC, para avaliar a eficácia da esterilização. RESULTADOS E CONCLUSÕES: o esterilizador com esferas de vidro mostrou-se eficaz no controle do crescimento de Bacillus stearothermophilus nas partes ativas dos alicates ortodônticos, a partir de 10 segundos de exposição à temperatura de 255ºC.

AIM: The aim of this research was to evaluate the efficiency of Steri® 350glass bead sterilizer, on the infection control of the active part of the orthodontic pliers. METHODS: Nine orthodontic pliers were sterilized in the steam autoclave at 121ºC in 20 minutes and subsequently the active part of each plier was dipped in a culture for Bacillus stearothermophilus. Later, the active part of each plier was putted into the Steri® 350 in the following periods: 3, 5, 10, 15, 20, 30, and 40 seconds at 255ºC to evaluate the efficiency of this method in the infection control. RESULTS AND CONCLUSIONS: This sterilization method has been effective to control the presence of Bacillus stearothermophilus on the active part of orthodontic pliers at 255ºC in 10 seconds.

Aplicação do disjuntor palatino tipo Borboleta na expansão da maxila / Application of Butterfly palatal expander in maxilla expansion

Este artigo tem como objetivo discorrer sobre a expansão rápida da maxila por intermédio do disjuntor palatino modificado tipo "Borboleta". Este tipo de disjuntor merece atenção especial, devido às suas indicações de uso serem diferentes das indicações que norteiam o uso dos disjuntores convencionais. Trata-se de um aparelho destinado à correção ortopédica de más oclusões transversais que atingem a pré-maxila. Para tanto, utiliza-se um parafuso central especial com uma dobradiça na região dos molares, promovendo um efeito de expansão em leque.

Dentes com dilaceração radicular: revisão da literatura e apresentação de um caso clínico / Tooth with root dilaceration: literature review and a case report

A dilaceração radicular é uma alteração de forma anatômica, geralmente associada a fatores etiológicos traumáticos que acomete cerca de 3% dos dentes permanentes. O tratamento de dentes impactados com dilaceração radicular e controverso e o planejamento sempre que possível deve ser o tracionamento do dente visando o posicionamento correto dentro do arcodentário. O presente trabalho apresenta um caso clínico de incisivo central superior permanente impactado e dilacerado cuja opção de tratamento foi o tracionamento ortodôntico.

Dilacerated mot is an anatomic anomaly, usually associated with traumatic injury. It includes approximately 3% of the permanent teeth. The treatment of dilacerated impacted teeth is a contraversy. The treatment objective should be, possible, the orthodontic traction to the correct position into the arch. This study report a clinical case where the pacient had an impactedand dilacerated upper central incisor whose treatment was ortodontic traction.

Surgical and orthodontic conduct in the treatment of mesiodens: a case report.

This article reports a clinical case involving an 8-year-old boy with two mesiodentes. The supernumerary teeth caused both a functional alteration (malocclusion) and an esthetic one (interincisal diastema), both of which affected his quality of living. Surgical removal of the supernumerary teeth and orthodontic follow-up was proposed, in agreement with the treatment established in the literature. This treatment produced satisfactory results in terms of both esthetics and functionality.