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OBJETIVO: O presente estudo apresenta um aspecto clínico relevante quanto à frequência das consultas durante o tratamento ortodôntico e de acompanhamento no período pós-tratamento, correlacionando-a com a recidiva da má oclusão. MÉTODOS: Estudo transversal realizado com 404 ortodontistas que responderam a um questionário eletrônico estruturado com questões relacionadas ao tratamento ortodôntico, tipos de aparelho de contenção, tempo de uso, recidivas e formas de retratamento. Os dados foram analisados, inicialmente, por meio de tabelas de distribuição de frequências e por análises de regressão logística simples e múltipla, com nível de significância de 5%. RESULTADOS: Profissionais que acompanham seus pacientes em períodos maiores que anualmente, ou que não os acompanham, têm 2,13 vezes (IC 95%: 1,22-3,71) mais chances de utilizar aparelhos de contenção fixos em caso de recidiva (p = 0,0097). Profissionais que tratam da mesma forma os próprios pacientes e os pacientes encaminhados têm mais chances (OR: 1,73; IC 95%: 1,14-2,62) de utilizar aparelhos de contenção fixos em caso de recidiva (p = 0,0097). Houve associação significativa entre o tempo que o profissional identifica o aparecimento das recidivas após a finalização do tratamento e a frequência com que ele acompanha o paciente no período pós-tratamento, sendo a recidiva detectada já no primeiro ano para 52,5% dos ortodontistas (p < 0,05). A maioria dos ortodontistas (93,1%) concordou que os aparelhos de contenção removíveis são mais suscetíveis a recidivas (p < 0,05). CONCLUSÃO: A maioria dos ortodontistas recomenda o uso de contenção em tempo integral para o resto da vida dos pacientes e realiza acompanhamento anual após o tratamento.

OBJECTIVE The aim of this study was to assess the association between the symptoms of temporomandibular disorder (TMD), sleep quality, and indicators of burnout syndrome in teachers. METHODS This cross-sectional study included 330 teachers with an average age of 43 years. The Diagnostic Criteria for Temporomandibular Disorders, Pittsburgh Sleep Quality Index, and the questionnaire to assess burnout syndrome - teachers' version were used for data collection. Simple and multiple logistic regression models were applied to analyze the independent variables at a 5% significance level. RESULTS Teachers with poor sleep quality, indicators of burnout syndrome, female sex, and impact on the domains of psychological exhaustion and guilt were, respectively, 1.91,1.92, 2.66, 1.97, and 2.60 times more likely to present at least one TMD symptom (p < 0.05). CONCLUSION Teachers with indicators of burnout syndrome and impaired sleep quality were more likely to present with at least one TMD symptom.

Purpose: To assess the influence of 0.12% chlorhexidine solution (CHX) in the strength degradation of different intermaxillary latex and non-latex elastics.Materials and methods: Eighty ¼ inch elas...

This study aimed to quantify mandibular ramus height and condylar distances asymmetry indexes in adult patients with different vertical facial growth pattern using Cone Beam computed tomography (CBCT). An observational cross-sectional study was conducted by using CBCT of 159 patients (mean age 26.36 ± 5.32 years). Vistadent 3D® software was used to determine the facial pattern in 3 groups (N = 53): hypodivergent, normodivergent and hyperdivergent—by Ricketts VERT index. Mandibular ramus height and the condylar linear distance in relation to the median sagittal plane were evaluated. The asymmetry index was calculated considering the right and left sides. Data were analyzed by generalized linear models and Tukey post-hoc test (α = 0.05). Significantly lower values were found for the left and right mandibular ramus height in the hyperdivergent skeletal pattern (P 0.05). Asymmetry indexes (mandibular ramus height and condylar distance) were similar, and no statistically significant differences were found among the skeletal patterns. In most subjects, the severity of mandibular ramus height asymmetry varied from light to not clinically significant independently of the facial type. The findings suggest that vertical facial growth pattern not affected the asymmetry index of mandibular ramus height and the intercondylar distance. The results also demonstrated significantly shorter mandibular ramus height for the hyperdivergent skeletal pattern individuals.

Introdução: Esta pesquisa objetivou avaliar, por meio de um estudo ‘in vitro’, a interferência de três bebidas (café, Coca-Cola® e vinho tinto) sobre a coloração de compósitos resinosos: Transbond XT® , Orthocem® , Fill Magic® e Z100® . Métodos: A amostra foi constituída por 160 corpos de prova (n=10), sendo 40 para cada compósito , divididos em 10 corpos de prova de cada compósito para cada substância corante e um controle (água destilada). Durante o período experimental de 28 dias, os corpos de prova foram submersos em água destilada e mantidos em estufa a 37°C. Os grupos experimentais foram imersos em café, vinho tinto ou Coca-Cola, 5 dias por semana, por 3 minutos diários. As variações de cor foram quantificadas considerando-se a variação expressa em ΔE (ΔL*, Δa* e Δb*). Os dados foram analisados por meio dos testes não paramétricos de Kruskal-Wallis e Dunn, considerando-se um nível de significância de 5%. Resultados: Verificou-se que não houve diferença significativa entre as marcas (p>0,05) para a variação na cor (ΔE), quando imersas na mesma solução. Para a marca Transbond, maior variação na cor (ΔE) foi observada nos espécimes imersos em vinho (p

Objetivo: Avaliar a proporção áurea da lar- gura percebida da coroa clínica dos dentes anteriores superiores de pacientes tratados ortodonticamente, e avaliar sua associação com a autopercepção de preocupações estéticas dentárias. Métodos: Um grupo (n = 40) de adultos jovens com tratamento ortodôntico finalizado teve seus pares (sem tratamento ortodôntico) selecionados de acordo com o sexo e a idade, usando randomização amostral simples. A proporção áurea dos dentes anteriores superiores foi medida com o software ImageJ. A preocupação estética dentária foi determinada pelo questionário Oral Aesthetic Subjective Impact Scale (OASIS). A comparação dos dados foi realizada pelo teste t de Student. Os escores do OASIS foram avaliados pelo teste de Mann-Whitney. As associações foram analisadas por regressão logística. Todos os procedimentos estatísticos foram realizados com = 5%. Resultados: A proporção áurea não foi encontrada entre as larguras mesiodistais percebidas dos incisivos centrais superiores e caninos em nenhum dos grupos (p0,05). Conclusão: Embora apresentem maior preocupação com estética dentária, os pacientes tratados ortodonticamente apresentam os dentes superiores anteriores mais próximos da proporção áurea, principalmente devido à largura aparente do incisivo central superior.

Introduction Orthodontic movement can cause painful symptoms, especially in the early stages of treatment. Objective This study aimed to compare the performance of chewing gum and ibuprofen in pain control during the initial period of orthodontic treatment. Material and method A randomized blind clinical trial, with an allocation ratio of 1:1, was developed with patients aged ≥18 years old. The sample size was established considering a significance level of 5% and test power of 80%, resulting in a minimum of 30 volunteers per group (n=90). Participants were paired regarding sex, age, the severity of malocclusion, defined by the Dental Health Component (DHC) of the Index of Orthodontic Treatment Need (IOTN), and crowding, determined by Little’s irregularity index. The sample was randomly allocated to three groups: Group I (control) placebo; Group II chewing gum; and Group III Ibuprofen. Pain perception was evaluated by the Visual Analog Scale (VAS) in the first 24, 36, and 48 hours after activation of the orthodontic appliance. The data were analyzed by generalized linear models for repeated measures in time. Result No statistically significant difference (p>0.05) was observed among the groups for the methods of pain therapy evaluated in 24, 36, and 48 hours post-activation. Conclusion There was no difference among the method used for pain control during the orthodontic treatment. Resumo Introdução A movimentação ortodôntica pode causar sintomatologia dolorosa, principalmente nas fases iniciais do tratamento. Objetivo Este estudo teve como objetivo comparar o desempenho da goma de mascar e do ibuprofeno no controle da dor durante o período inicial do tratamento ortodôntico. Material e método Foi desenvolvido um ensaio clínico randomizado cego, com razão de alocação de 1:1, com pacientes com idade ≥18 anos. O tamanho da amostra foi estabelecido considerando um nível de significância de 5% e poder do teste de 80%, resultando em um mínimo de 30 voluntários por grupo (n=90). Os participantes foram pareados quanto ao sexo, idade, gravidade da má oclusão, definida pelo Componente de Saúde Bucal (DHC) do Índice de Necessidade de Tratamento Ortodôntico (IOTN), e apinhamento, determinado pelo índice de irregularidade de Little. A amostra foi distribuída aleatoriamente em três grupos: Grupo I (controle) placebo; Goma de mascar Grupo II; e Grupo III Ibuprofeno. A percepção da dor foi avaliada pela Escala Visual Analógica (EVA) nas primeiras 24, 36 e 48 horas após a ativação do aparelho ortodôntico. Os dados foram analisados por modelos lineares generalizados para medidas repetidas no tempo. Resultado Não foi observada diferença estatisticamente significativa (p>0.05) entre os grupos para os métodos de terapia da dor avaliados em 24, 36 e 48 horas pós-ativação. Conclusão: Não houve diferença entre o método utilizado para controle da dor durante o tratamento ortodôntico.

Introduction Orofacial pain is a critical TMD symptom that can influence physical and social capacity. Objective To evaluate the association of temporomandibular disorders (TMD) symptoms with affective relationships and demographic variables in young adults. Material and method A cross-sectional study involving 395 young adults was developed. Diagnostic Criteria for TMD, anxiety, and depression were collected from questionnaires. The Dental Health Component of the Index of Orthodontic Treatment Need measures the orthodontic treatment need. Questionnaires also contained questions related to the previous orthodontic treatment. Logistic regression models were adjusted, estimating crude odds ratio with the 95% confidence intervals. The variables with p0.05). Individuals without an affective relationship are 1.78 (95%CI: 0.99-3.17) times more likely to report TMD symptoms. Conclusion Affective relationships showed an association with TMD symptoms in young adults. Resumo Introdução A dor orofacial é um sintoma crítico da DTM que pode influenciar a capacidade física e social. Objetivo Avaliar a associação dos sintomas das desordens têmporomandibulares (DTM) com as relações afetivas e variáveis demográficas em adultos jovens. Material e método Estudo transversal envolvendo 395 adultos jovens foi realizado. Os critérios diagnósticos para DTM, ansiedade e depressão foram coletados a partir de questionários. O Componente de Saúde Bucal do Índice de Necessidade de Tratamento Ortodôntico mensurou a necessidade de tratamento ortodôntico. Os questionários também continham questões relacionadas ao tratamento ortodôntico anterior. Modelos de regressão logística foram ajustados, estimando odds ratio bruto com os intervalos de confiança de 95%. As variáveis com p0.05). Indivíduos sem relacionamento afetivo têm 1.78 (IC95%:0.99-3.17) vezes mais chance de relatar sintomas de DTM. Conclusão Os relacionamentos afetivos mostraram associação com os sintomas de DTM em adultos jovens.

The objective of this study was to show, through a review of the literature,the association between occupational stress and temporomandibulardisorder in the military. Nowadays, the high professional competitivenessin the labor market, especially in the military environment, is marked byrigorous principles of hierarchyand discipline, strenuous routines, trainingand even the possibility of involvement inactivities with risk of death. Inthis way, militarism is considered as a stress fuloccupation, which maymake these individuals more susceptible to psychicdisturbances andharmful physiological problems. The effect of stress on the stomatognathicsystem evolves through complex interrelations, resulting in the releaseof chemical mediators that may cause an increase in muscle tone,whichmay secondarily induce changes in the temporomandibular joints,thus contributing to the development of temporomandibular disorder. Inaddition, stress may desensitize structures involved in central nervous systemregulation, contributing toch anges in pain perception of individuals.Therefore, the available evidence in the scientific literature indicates thatmilitary professionals present high levels of boths tress and temporomandibulardysfunction, suggesting a positive association between the two pathologies,however, further studies are needed to define the exactcausalrole of stress on the course and etiology of the dysfunction.

Introduction There is no consensus about the immediate and latte follow-up effects of maxillary protraction in cleft lip and palate patients. Objective To evaluate the stability of Class III early treatment in cleft lip and palate patients through maxillary expansion and protraction. Material and method The sample consists in three lateral cephalometric radiographs of 28 patients (mean pre-treatment age of 6.7±1.8 years) who presented cleft lip and palate and were treated with maxillary expansion and Petit facial mask. The angular (SNA, SNB, ANB, SN.GoGn, FMA, Z Angle) and linear (overjet, Co-A, Co-Gn, Nperp-A, Nperp-Pg, AO-BO) cephalometric measures were evaluated through the Dolphin® software, in three moments: T0 (initial), T1 (after treatment), and T2 (follow-up). Data were submitted to the analysis of variance (ANOVA) and Tukey-Kramer test. The correlation between cephalometric measures and patient’s age was determined by Pearson’s chi-squared test. Result The SNA, ANB, and AO-BO measures increased considerably (p0,05). O overjet aumentou significativamente após o tratamento e mesmo tendo diminuído com o tempo, ainda se apresentava maior quando comparado ao momento inicial (p

To investigate the association between temporomandibular disorder (TMD) symptoms and women's oral health-related quality of life (OHRQoL).Of the women, 86.9% in the case group, and 69.6% in the control group presented some TMD symptoms (Women with a negative impact on OHRQoL are more likely to report TMD symptoms.

Aim: To evaluate the influence of social capital on self-perception related to orthodontic treatment need. Methods: A cross-sectional study was conducted with a sample of 578 11-16 years-old adolescents from a city in southern Brazil. Social capital was evaluated using the Social Capital Questionnaire for Adolescent Students (SCQ-AS). Index of Orthodontic Treatment Need (IOTN) assessed malocclusion and self-perception related to orthodontic treatment need. Sociodemographic aspects of adolescents were also evaluated. Individual analyses were performed, relating the study variables to the outcome, estimating the odds ratio with the respective confidence intervals of 95%. The variables with p

The aim of this study was to evaluate the force degradation and deformation over time of an open-closed and open coil spring.40 NiTi springs were divided into 2 groups according to the manufacturer (20 specimens per group): Morelli™ (Sorocaba, SP, Brazil) and Orthopli™ (Philadelphia, PA, USA). Then, they were subdivided into 2 groups according to the type of spring (n=10): open spring and open-closed spring. The springs were submitted to the initial compression test in a Universal Test Machine (Instron) in 43.3% of the initial length and analyzed in 3 points (0.5mm, 3.25mm and 6.5mm). After this, the springs were activated with a 240 gf and those maintained for 4 weeks in artificial saliva in the oven at 37°C, and analyzed by a new compression test with the same initial parameters. Scanning Electron Microscopy/Energy Dispersive X-Ray Spectroscopy (SEM/EDS) analyzed the spring's morphology. Two-way repeated measures Analysis of Variance was applied for each brand and extension of compression. Student t-test with correction of Bonferroni was used to compare open spring vs open-closed springs and pairwise t-test was used to compare initial vs final period. The level of significance was set at 95% in all tests. The most representative images were selected (SEM/EDS).The Orthopli™ open-closed spring showed a statistically higher deformation (14.52±0.37) in relation to open spring (14.85±0.19) after 4 weeks (P0.05). No statistical difference was observed between the types of Morelli™ springs (P0.05). Orthopli™ open-closed spring showed force values statistically higher than the open spring in the initial and final time (P0.05). Regardless of the type of spring, the initial force was significantly higher than the final force (P0.05).The orthodontist should not rely on the indicated force range without considering the type of spring (open or open-closed), the manufacturer and the amount of compression of the spring.

O objetivo foi verificar a relação entre Sintomas de Disfunção Temporomandibular (DTM), bruxismo, estresse e fatores sociodemograficos em estudantes universitários. Foram aplicados questionários em 362 estudantes de Odontologia, na faixa etária de 17 a 56 anos de ambos os sexos. A coleta de dados foi realizada através do questionário para triagem para Dor Orofacial e DTM recomendado pela Academia Americana de Dor Orofacial, questionário de sintomas de Bruxismo baseado nos critérios da Academia Americana de Medicina do Sono, Escala de Estresse Percebido (PSS-14) e um questionário estruturado sociodemográfico. Os dados foram analisados por meio de regressão logística múltipla, considerando um nível de significância de 5%. Os sintomas de DTM foram relatados por 60%, o bruxismo por 37% e o estresse em 52% dos estudantes universitários avaliados. Verificou-se que universitários do sexo feminino, que estudam no período noturno e com estresse têm 3.36 (IC95%: 1.87-6.01), 1.71 (IC95%: 1.05-2.79) e 1.90 (IC95%: 1.17-3.08) vezes mais chance, respectivamente, de apresentar pelo menos um sintoma de DTM (P

Introduction In recent years, there has been an increasing demand for esthetic treatments, especially among orthodontic patients. Objective This study determined the fracture strength of monocrystalline and polycrystalline ceramic brackets of different manufacturers during archwire torque. Material and method Sixty ceramic brackets (Roth, right upper central incisors, 0.022 x 0.028-inch slot) were allocated into two groups (30 specimens per group) according to the type of ceramics: monocrystalline and polycrystalline. Subsequently, the groups were divided into three subgroups (n = 10) according to the manufacturer: Orthometric, Eurodonto and Ortho Technology. Sixty PVC cylinders were filled with chemically activated acrylic resin (CAAR), the brackets were fixed with CAAR onto the cylinder surface and the excess material was used to partially cover the base of the bracket. After 24h, the U-shaped wire base (0.019 x 0.025 inches; 6 mm height and width) was inserted into the bracket slot and fixed thereon with a stainless-steel wire. Vertical folds were made at the ends of the “U” to support the universal test machine chisel. The fracture strength test was performed at a speed of 1.0 mm/min until fracture into a universal test machine (Instron). The data were recorded, transformed into g.mm and submitted to two-way ANOVA followed by Tukey’s post-hoc test (SAS Institute Inc., Cary, NC, USA, version 9.3) (α=5%). Result Monocrystalline brackets showed a higher fracture strength than polycrystalline brackets, regardless of the manufacturer (p0.05). Conclusion Monocrystalline ceramic brackets have a higher fracture strength than polycrystalline brackets, with significant manufacturer-dependent differences. Resumo Introdução A demanda por tratamentos estéticos tem crescido nos últimos anos, sendo cada vez mais forte a preocupação com a estética por parte dos pacientes que buscam o tratamento ortodôntico. Objetivo Este estudo avaliou a resistência à fratura de bráquetes cerâmicos monocristalinos e policristalinos de diferentes fabricantes quando submetidos ao torque do fio. Material e método Sessenta bráquetes cerâmicos (Roth, incisivos centrais superiores direito, canaleta 0,022 x 0,028 polegadas) foram divididos em 2 grupos (30 espécimes por grupo) de acordo com o tipo da cerâmica: monocristalina e policristalina. Posteriomente estes grupos foram divididos em 3 sub-grupos (n=10) de acordo com o fabricante: Orthometric, Eurodonto e Ortho Technology. Segmentos de fio de aço inoxidável retangular (0,019 x 0,025 polegadas) foram dobrados em forma de “U”, sendo que a base do “U” foi inserida na canaleta do bráquete e fixado com fio de amarilho em aço inoxidável (0,008mm). Nas extremidades do “U” foram realizadas dobras verticais para servir de apoio para o cinzel da máquina de ensaio universal Instron. O ensaio de resistência à fratura foi realizado à velocidade de 1,0 mm/min até ocorrer a fratura. Os dados foram registrados, transformados em g.mm e submetidos à ANOVA dois fatores e ao teste de Tukey (SAS Institute Inc., Cary, NC, USA, version 9.3) (α=5%). Resultado Os bráquetes monocristalinos apresentaram maior resistência à fratura em relação aos policristalinos, independente do fabricante (p0,05). Conclusão Bráquetes monocristalinos possuem maior resistência à fratura em relação aos policristalinos com diferenças na resistência à fratura entre os diferentes fabricantes.

Objective: This study aimed to assess the knowledge, attitudes, and aspects of the clinical practice of orthodontists and periodontists, regarding lower fixed orthodontic retainers. Methods: The orthodontists (n=502) and periodontists (n=269) who participated in this cross-sectional observational study received, via e-mail, questions related to the type of lower fixed retainer, dental biofilm accumulation, oral hygiene, and potential periodontal changes. The data were subjected to chi-square and Fisher’s exact tests, at 5% significance level. Results: Both orthodontists (72.3%) and periodontists (58.7%) reported that hygienic retainers accumulate more dental biofilm (p< 0.05), and 64.1% of orthodontists and 58.7% of periodontists considered that modified retainers may lead to periodontal changes (p< 0.05). There was no significant difference between the dental specialties, regarding the type of lower fixed retainer considered the easiest for the patient to perform hygiene (p> 0.05), whereas 48.6% of professionals chose the modified type. Conclusion: The modified retainer accumulates a greater amount of dental biofilm and, in the perception of orthodontists and periodontists, it may cause periodontal changes. RESUMO Objetivo: O objetivo do presente estudo foi avaliar o conhecimento, as atitudes e os aspectos da prática clínica de ortodontistas e periodontistas, com relação às contenções ortodônticas fixas inferiores. Métodos: Os ortodontistas (n = 502) e periodontistas (n = 269) que participaram desse estudo transversal observacional receberam, por correio eletrônico, perguntas relacionadas ao tipo de contenção fixa inferior e ao acúmulo de biofilme dentário, higiene bucal e possíveis alterações no periodonto. Os dados foram submetidos aos testes Qui-Quadrado e Exato de Fisher, com nível de significância de 5%. Resultados: Tanto os ortodontistas (72,3%) quanto os periodontistas (58,7%) relataram que a contenção higiênica acumula mais biofilme dental (p< 0,05), e 64,1% dos ortodontistas e 58,7% dos periodontistas consideram que a contenção modificada pode levar a alterações periodontais (p< 0,05). Não houve diferença significativa entre os especialistas a respeito do tipo de contenção fixa inferior considerado de mais fácil higienização pelo paciente (p> 0,05), sendo que 48,6% dos profissionais escolheram a do tipo modificada. Conclusão: Na percepção dos ortodontistas e periodontistas, a contenção modificada acumula maior quantidade de biofilme dentário, podendo causar alterações periodontais.

Objective: Overweight and obesity rates are growing at alarming levels worldwide. Adolescents of higher socioeconomic status are more likely to be overweight, however, information from economically vulnerable populations is lacking. Therefore, the present study aimed to determine the impact of normative and self-perceived clinical aspects on the outcomes of obesity in vulnerable adolescents. Methodology: Observational cross-sectional study with 239 adolescents with an average age of 13 years, enrolled in public schools in Sabará (Minas Gerais). Body Mass Index values were obtained and classified according to AnthroPlus software. Dental Health Component of the Index of Orthodontic Treatment Need (IOTN) evaluated the normative malocclusion and the Aesthetic Component of IOTN the subjective occlusal evaluation. DMFT index evaluated dental caries activity and experience. Crude Odds Ratio values were estimated and adjusted, with a 95% confidence interval and a 5% significance level. Results: Adolescents with self-perceived malocclusion were less likely to be obese (P 0.05). Conclusion: Adolescents with self-perceived malocclusion were less likely to be obese, suggesting that obesity is associated with perceived malocclusion, but not with caries experience. Objetivo: Las tasas de sobrepeso y obesidad están aumentando a niveles alarmantes en todo el mundo. Los adolescentes de nivel socioeconómico más alto tienen más probabilidades de tener sobrepeso, sin embargo, se carece de información de poblaciones económicamente vulnerables. Metodologia: Por lo tanto, el presente estudio tuvo como objetivo determinar el impacto de los aspectos clínicos normativos y autopercibidos sobre los resultados de la obesidad en adolescentes vulnerables. Estudio observacional transversal realizado con 239 adolescentes con una edad promedio de 13 años, matriculados en escuelas públicas de Sabará (Minas Gerais). Los valores del Índice de Masa Corporal se obtuvieron y clasificaron según el software AnthroPlus. El componente de salud bucal del índice de necesidades de tratamiento de ortodoncia (IOTN) evaluó la maloclusión normativa y el componente estético de la IOTN evaluó la evaluación oclusal subjetiva. El índice CPO-D evaluó la actividad y la experiencia de la caries dental. Se estimaron y ajustaron los valores de Odds Ratio, con un intervalo de confianza del 95% y un nivel de significancia del 5%. Resultados: Los adolescentes con maloclusión percibida tenían menos probabilidades de ser obesos (P < 0.05). En general, el 20.0% de los adolescentes con maloclusión percibida eran obesos, en comparación con el 40.6% de aquellos sin maloclusión percibida. La obesidad no se asoció con el género y la caries dental (P > 0.05). Conclusión: Los adolescentes con maloclusión autopercibida tenían menos probabilidades de ser obesos, lo que sugiere que la obesidad está asociada con la maloclusión percibida, pero no con la experiencia de caries. Objetivo: As taxas de sobrepeso e obesidade estão crescendo em níveis alarmantes em todo o mundo. Adolescentes de nível socioeconômico mais elevado têm maior probabilidade de apresentar excesso de peso, no entanto, faltam informações de populações economicamente vulneráveis. Metodologia: Portanto, o presente estudo teve como objetivo determinar o impacto de aspectos clínicos normativos e autopercebidos nos desfechos da obesidade em adolescentes vulneráveis. Estudo transversal observacional realizado com 239 adolescentes com idade média de 13 anos, matriculados nas escolas públicas de Sabará (Minas Gerais). Os valores do Índice de Massa Corporal foram obtidos e classificados de acordo com o software AnthroPlus. O Componente de Saúde Bucal do Índice de Necessidade de Tratamento Ortodôntico (IOTN) avaliou a má oclusão normativa e o Componente Estético do IOTN a avaliação oclusal subjetiva. O índice CPO-D avaliou a atividade e a experiência de cárie dentária. Os valores de Odds Ratio foram estimados e ajustados, com intervalo de confiança de 95% e nível de significância de 5%. Resultados: Adolescentes com má oclusão percebida eram menos propensos a serem obesos (P 0.05). Conclusão: Adolescentes com má oclusão autopercebida eram menos propensos a serem obesos, sugerindo que a obesidade está associada à má oclusão percebida, mas não à experiência de cárie.

Objectives: The aim of this study was to investigate the association between symptoms of temporomandibular disorders (TMD), quality of life, and malocclusion.Methods: A cross-sectional observational design study was utilized among 248 schoolchildren aged 12 years old. Symptoms of TMD were assessed using the Orofacial Pain and Temporomandibular Disorders Triage Questionnaire, and subjects were further evaluated as oral-health-related quality of life (CPQ11-14), tooth clenching/grinding and malocclusion (Dental Aesthetic Index). Chi-square for independence, Odds Ratio and Mann–Whitney test were used (p = 0.05) statistically.Results: Statistically, association was detected between TMD symptoms with pain and worse quality of life (p

Objective This study was designed to evaluate the skeletal, dental and soft tissue effects of mandibular deficiency treatment with the mandibular protraction appliance (MPA) using 12 factors of the Ricketts analysis. Material and method This cross-sectional retrospective study sample consisted of a group (n = 27), with Class II malocclusion, convex facial profile, increased horizontal trespass and mandibular deficiency, with initial mean age of 12.27 and final of 15.18 years, treated with fixed appliance combined with the MPA, in an average time of 2.9 years. Initial and final radiographs were investigated using Ricketts analysis. The dependent t-test was used to compare the initial and final phases of the MPA group, with a significance level of 5%. Result Statistically significant differences were observed for dental changes such as retrusion (p=0.000) and palatal inclination of the maxillary incisors (p=0.000); protrusion (p=0.000) and buccal inclination of the mandibular incisors (p=0.000); increased interincisal angle (p=0.002) and improved molar ratio (p=0.003). There was also a restriction of the anterior displacement of the maxilla (p=0.000) and a decrease in the mandibular plane angle (p=0.024). The variable inferior labial protrusion with significance (p=0.000), reiterated the improvement in the profile. Conclusion The effects of MPA on correction of malocclusion Class II, verified by Ricketts analysis occurred predominantly by dentoalveolar changes, decrease in the Mandibular Plane Angle, and restriction of anterior displacement of the maxilla, which contributed to the improvement in the patient's profile. Resumo Objetivo Este estudo analisou as alterações dentárias, esqueléticas e tegumentares promovidas pelo Aparelho de Protração Mandibular (APM) por meio da análise de Ricketts. Material e método A amostra contou com 27 pacientes (14 meninas e 13 meninos) com má oclusão de Classe II, perfil facial convexo, trespasse horizontal aumentado e deficiência mandibular, com idade média inicial de 12,27 e final de 15,18 anos, tratados com aparelho fixo combinado com o APM. A comparação das telerradiografias iniciais (T1) e finais (T2) foi realizada pelo teste t dependente, com nível de significância de 5%. Resultado Observou-se diferença estatisticamente significante para a retrusão (p=0.000) e lingualização dos incisivos superiores (p=0.000), protrusão (p=0.000) e vestibularização dos incisivos inferiores (p=0.000), aumento do ângulo interincisivos (p=0.002), melhora da relação molar (p=0.003), restrição do deslocamento anterior da maxila (p=0.000), diminuição do ângulo do plano mandibular (p=0.024) e melhora do perfil facial (p=0.000). Conclusão O APM promoveu alterações dentoalveolares, observadas principalmente pela diminuição do ângulo do plano mandibular e restrição do deslocamento para anterior da maxila que contribuíram para a melhora do perfil do paciente.

Objective The aim of the study was to determine prevalence of malocclusion and the inter- and intra-arch relations in schoolchildren of 7-12 years of Vazante, Minas Gerais, Brazil. Methods In the inter-arch relations the sagittal, vertical and transverse aspects were evaluated, and in the intra-arch relations, diastemas, crowding and tooth losses were determined in 670 children. The maloclussion was classified as Class I , II and III according to Angle, based on the position of the first molars. For this study, the sample was divided into two age groups: children from 7 to 9 years and children from 10 to 12 years old. Results A similar percentage of individuals with Class I and II was found in the two age groups evaluated. A higher percentage of Class III individuals was observed in the age group from 10 to 12 years. The presence of cross bite, anterior open bite, diastemas, crowding and early primary tooth loss was prevalent in the age groups of 7 and 9 years. Deep bite, posterior cross bite and early loss of permanent teeth prevailed in the age from 10 to 12 years. Conclusion It could be concluded that there was a high rate of malocclusion in children and the sagittal relation was maintained in the two periods evaluated. A larger number of manifestations of anterior open bite were observed in the age group of 7 to 9 years, and overbite in the Group from 10 to 12 years. In the transverse relation there was an increase in cross bite from the first to second transitory period.

The purpose of this study was to evaluate the effect of diode laser (GaAIAs - 780 nm) on pain to palpation and electromyographic (EMG) activity of the masseter and anterior temporalis muscles. The laser was applied on the temporalis and masseter muscles twice a week (four weeks). Forty-eight (48) patients with myofascial pain were randomly assigned between actual and placebo treatments and between the energetic doses of 25 J/cm2 and 60 J/cm2, and were evaluated using VAS before, immediately after the final application, and 30 days after the laser treatment. Surface electromyography was performed with maximum dental clenching before and after laser therapy. The results show there were no significant statistical differences in the EMG activity between the groups before and after laser treatment. With regard to the pain at palpation, although both groups presented a significant difference in the symptoms before and after the treatment, only the active doses showed statistically significant reductions in pain level in all the regions of the palpated muscles. However, there was no significant statistical difference between groups (experimental and placebo). In conclusion, low level laser did not promote any changes in EMG activity. The treatment did, however, lessen the pain symptoms in the experimental groups.

Due to its multifactorial pain aspects, combined therapies are required for the the comprehensive management of temporomandibular joint disorders (TMD). Interdisciplinary forms of therapies, such as laser therapy, and health care or medical professionals, such as speech therapists, have been proposed for this comprehensive management. The aims of this study were the following: 1. verify whether low-intensity laser therapy would promote significant pain remission; 2. evaluate whether this changes orofacial myofunctional conditions in the sample, as tested, using the Orofacial Myofunctional Evaluation with Scores (OMES); and 3. evaluate whether or not the pain improvement would remain stable after a 30-day follow-up for pain conditions. The study included 12 female volunteers diagnosed with myofascial pain and ages ranging from 18 to 60 years old, with or without intra-articular TMD, according to axis I of the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). Participants were assessed for pain on palpation, using a visual analogue scale (VAS), before treatment (A1), immediately after 30 days of intervention, i.e, after eight sessions of Low Intensity Laser Therapy (LILT) (A2), and 30 days after the end of the treatment with LILT (A3) (follow-up). Comparing the three evaluation times, it was observed that there was a significant decrease in the values of subjective pain to palpation (p < 0.05). The initial pain (A1) differed significantly from the A2, but did not differ significantly from A3.

O objetivo deste estudo foi avaliar o efeito de placas oclusais com guias anteriores de desoclusão e placas oclusais com contatos bilaterais e anteriores simultâneos durante os movimentos excursivos da mandíbula em pacientes com disfunção temporomandibular (DTM) e zumbido subjetivo. Foram avaliados 264 pacientes encaminhados para tratamento da DTM na FORP/USP e selecionados 32 mulheres com DTM muscular, associada ou não a DTM articular, e zumbido subjetivo que preencheram os critérios de inclusão. O diagnóstico da DTM foi realizado com o Research Diagnostic Criteria for Temporomadibular Disorders (RDC/TMD). As pacientes foram divididas randomicamente em dois grupos para utilizarem um dos dois tipos de placas. As avaliações incluíram dor à palpação, limiar de dor a pressão com algômetro, medidas da amplitude dos movimentos mandibulares, eletromiografia de superfície, relato da intensidade da dor e da loudness do zumbido em escala visual analógica (EVA) e das características do zumbido. Os pacientes também responderam a um questionário para quantificação da frequência e severidade dos sinais e sintomas de DTM (ProDTMMulti) e para a avaliação do impacto do zumbido no dia-a-dia (Tinnitus Handicap Inventory - THI). A avaliação eletromiográfica foi realizada em várias atividades com e sem placa oclusal (apertamento máximo voluntário, movimentos excursivos mandibulares, repouso e mastigação habitual) e comparada com um grupo de 13 mulheres assintomáticas. As avaliações foram realizadas inicialmente (A1), no dia de instalação das placas oclusais, após 60 dias da avaliação inicial (A2) e após 90 dias de uso da placa oclusal (A3). O período entre as avaliações A1 e A2 foi considerado um período controle. Os resultados mostraram uma significante melhora da dor relatada pelo pacientes e aumento da amplitude da abertura bucal sem dor nos dois grupos, sem diferença entre eles. A atividade eletromiográfica foi significativamente reduzida durante apertamento máximo voluntário com a placa oclusal em comparação com o apertamento em máxima intercuspidação habitual, para as demais atividades realizadas durante o exame não houve diferença significante. A avaliação do zumbido mostrou que em muitos pacientes houve remissão do sintoma após o tratamento com placa oclusal. Não houve diferença entre os grupos para todas as avaliações realizadas. Baseados nesses achados, pode-se concluir que o tratamento com ambas as placas promoveu melhora na sintomatologia dos pacientes, sem diferenças entre elas, e houve em muitos pacientes uma remissão do zumbido relatado durante o tratamento. The aim of this study was to assess the effect of anterior guidance and bilateral balanced splints in patients with temporomandibular disorders (TMD) and subjective tinnitus. A total of 264 subjects referred for treatment of TMD in FORP/USP were evaluated and 32 women with muscular TMD with or without the diagnosis of articular TMD, who met the inclusion criteria, were selected. TMD diagnosis was performed according to Research Diagnostic Criteria for Temporomadibular Disorders (RDC/TMD). The patients were randomly divided into two groups: anterior guidance splint group and bilateral balanced splints group. The assessments included pain to palpation, pressure pain threshold with algometer, measurement of amplitude of mandibular movements, surface electromyography, pain intensity and loudness of tinnitus reports in visual analogue scale (VAS) and characteristics of tinnitus. The patients also answered a questionnaire to quantify the frequency and severity of signs and symptoms of TMD (ProDTMMulti) and to assess the impact of tinnitus on a day-to-day (Tinnitus Handicap Inventory - THI). The electromyography evaluation was performed in different activities with and without occlusal splint (maximum voluntary clenching, excursive jaw movements, resting and habitual chewing) and compared to a group of 13 asymptomatic women. The assessments were performed initially (A1), at the day of installation of the occlusal splints, after 60 days of the initial assessment (A2) and after 90 days of occlusal splint therapy (A3). The period between A1 and A2 assessments was considered a control period. The results showed a significant improvement in pain reported by patients and an increase in the amplitude of mouth opening without pain in both groups, without difference between them. The electromyographic activity was significantly reduced during maximum voluntary clenching with occlusal splint compared to clenching in maximal habitual intercuspation, to the other activities performed during the examination there was no significant difference. The tinnitus evaluation showed that in many patients there was remission of symptom after treatment with occlusal splint. There was no difference among groups for all assessments. Based on these findings it is possible to conclude that treatment with both splints promoted improvement in symptoms of patients, without differences among them, and many patients had a remission of reported tinnitus during the treatment.

O laser de baixa intensidade tem sido utilizado atualmente como terapia alternativa para alívio da dor em disfunções musculares e articulares por induzirem um efeito analgésico, antiinflamatório e biomodulador das funções fisiológicas celulares. O objetivo desse estudo foi avaliar o efeito do laser de GaAlAs (780nm) na dor à palpação dos músculos masseter e temporal anterior e articulação temporomandibular (ATM), amplitude dos movimentos mandibulares e atividade eletromiográfica dos músculos masseter e temporal anterior em pacientes com disfunção temporomandibular (DTM). As aplicações foram feitas no músculo temporal e masseter e na ATM 2 vezes/semana (durante 4 semanas). 48 pacientes com dor miofascial e artralgia distribuídos aleatoriamente entre tratamento real e placebo e entre doses energéticas de 25 J/cm² e 60 J/cm² foram avaliados utilizando-se uma Escala Analógica Visual (VAS) e um paquímetro digital antes, imediatamente após a última aplicação e 30 dias após o tratamento com laser. A eletromiografia de superfície foi realizada em máximo apertamento voluntário em rolos de algodão e máximo apertamento voluntário em posição intercuspidal antes e após a laserterapia. Os resultados mostraram que não houve diferença estatística significante na atividade eletromiográfica na comparação entre os grupos antes e após o tratamento com laser. Em relação à dor na palpação, houve diferença significante antes e após o tratamento em todos os grupos. A diminuição dos níveis de dor muscular foi mais acentuada nas pontas ativas, entretanto, não houve diferença estatística significante entre o grupo real e placebo. A dor articular mostrou melhora significante apenas na palpação do pólo lateral da ATM direita nos grupos ativos. A amplitude dos movimentos mostrou melhora no grupo ativo, principalmente, na dose de 60 J/cm². Em conclusão, o laser de baixa intensidade não promoveu mudanças na atividade eletromiográfica. Embora tenha sido encontrada uma superioridade da terapia laser em relação aos grupos placebos, não houve diferença estatística significante entre todos os grupos. Low intensity laser have been used currently as an alternative pain-relief therapy for muscle and joint pain since it induces analgesic, anti-inflammatory and biomodulation effects of the physiological cell functions. The purpose of this study was to evaluate the effect of GaAlAs laser (780nm) on pain to palpation of the masseter and anterior temporalis muscles and the temporomandibular joint (TMJ), amplitude of the mandibular movements and electromyographic activity of the masseter and anterior temporalis muscles in patients with temporomandibular disorders (TMD). The laser was applied on the temporalis, masseter muscles and TMJ twice a week (during four weeks). Forty-eight patients with miofascial pain and arthralgia were randomly assigned between real and placebo treatment and between the energetic doses of 25 J/cm² and 60 J/cm², and were evaluated using Visual Analogue Scale (VAS) and digital paquimeter before, immediately after the final application, and 30 days after the laser treatment. Surface electromyography was performed with maximum voluntary clench on cotton rolls and maximum voluntary clench in intercuspal before and after laser therapy. The results show there were no significant statistical differences in the electromyographic activity between the groups before and after laser treatment. As to the pain at palpation, there was a significant difference before and after treatment in every group. There were sharper reductions in muscle pain level for the active probes; however, there was no significant statistical difference between the real and placebo groups. Joint pain showed significant improvement only in the palpation of the lateral pole of right TMJ in the active groups. The amplitude of the movements showed improvement in the active group, mainly, in the dose of 60 J/cm². As conclusion, low intensity laser did not promote any changes in the electromyographic activity. Although this study has found a superiority of laser therapy over placebo, there were no statistically significant differences between all groups.

Objectives: The purpose of this study was to evaluate biofilm distribution over internal and external surfaces of upper complete dentures. It was also aimed at assessing the effect of oral hygiene instructions before and after home use of a disclosing solution. Materials and methods: The sample consisted of 29 complete denture wearers whose upper prostheses were evaluated. Surface biofilm was disclosed by means of a 1% neutral red solution and quantified with regard to internal and external surfaces. Oral hygiene information was provided on an individual basis. During the second stage, an amount of disclosing solution was given for domestic use. Results: Internal and external surfaces presented a similar amount of biofilm, which was concentrated over the area of the posterior teeth area, palatal rugae and the internal vestibular incline of the distobuccal flange. This pattern was maintained during the study. However, overall amounts were reduced following denture hygiene information. The use of disclosing solution by subjects at home resulted in a further reduction. Conclusions: It was concluded that biofilm deposits were similar over assessed surfaces, regardless of the type of procedure but irregular areas presented greater amounts. Oral health instruction was effective in reducing the biofilm, in particular when associated with home use of a disclosing agent.