Correlation between general quality of life and oral health related quality in the mixed dentition.

The aim of this study was to evaluate the convergence between the domains of the Autoquestionnaire Qualité de Vie Enfant image (AUQUEI) and the Child Perceptions Questionnaire (CPQ8-10) in the mixed dentition. A sample of 676 children aged 8 to 10 years responded to the health-related quality of life (HRQoL) and oral health-related quality of life (OHRQoL) questionnaires using the AUQUEI and the CPQ8-10, respectively. Clinical (dental caries and malocclusion) and socioeconomic variables were assessed. The validity of convergence between scores (total and per domain) of the two instruments was assessed by Spearman correlation analysis, considering that non-zero coefficient values represented a correlation between scores. The median was calculated to compare the scores of each questionnaire relative to the variables, and the nonparametric Mann-Whitney test was applied to determine statistically significant differences between the categories. A weak significant correlation (between 0.30 and 0.50) was observed between the domains and the total scores of instruments (p < 0.05), except for the leisure domain (p > 0.05). Participants with a lower family income had worse HRQoL (p < 0.05), and those with caries and malocclusion experience had worse OHRQoL (p < 0.05). In conclusion, the AUQUEI and CPQ8-10 instruments showed a weak correlation. Income and clinical variables had a negative impact on the AUQUEI and CPQ8-10, respectively.

Three-dimensional analysis of posterior tooth inclinations in transverse and sagittal relationships: A cross-sectional study.

OBJECTIVE: To compare tooth inclinations in different sagittal skeletal patterns and transverse maxillary relationships three-dimensionally. METHODS: A cross-sectional study carried out with 132 three-dimensional digital models in the complete permanent dentition divided into six groups (n=22); three groups with maxillary atresia: G1- skeletal class I, G2- skeletal class II and G3-skeletal class III; three groups without maxillary atresia: G4- skeletal class I; G5- skeletal class II and G6- skeletal class III. The comparison between the skeletal pattern was performed by the non-parametric tests of Kruskal Wallis and Dunn and between the groups by the non-parametric test of Mann Whitney. RESULTS: Subjects with skeletal class II and maxillary atresia had a greater lingual inclination of the maxillary teeth than those with class I and III; Subjects with skeletal class II without atresia had a less lingual inclination of the mandibular molars than the other classes (p<0.05). The maxillary premolars showed no variation in dental inclination with atresia, independent of the skeletal class in G1, G2, and G3 (p>0.05). The mandibular premolars showed that the groups without atresia G4, G5, and G6 presented no significant difference (p>0.05). Lower premolars in skeletal class III malocclusion individuals with atresia had a more negative inclination than the others. CONCLUSION: There is a difference in the inclination of posterior teeth between individuals with and without maxillary atresia and skeletal classes I, II, and III.

Longitudinal study for dental caries calibration of dentists unexperienced in epidemiological surveys.

This study aimed to make a longitudinal analysis of interexaminer calibration reproducibility in diagnosing dental caries in posterior teeth, by examiners without previous experience in epidemiological studies. A group of 11 inexperienced examiners underwent theoretical-practical training and calibration assessments, assisted by a standard examiner. An examiner who did not participate directly in the research selected 5-year-old children with and without caries. The D3 diagnostic threshold was used to evaluate dental caries, based on the World Health Organization (WHO) criteria. The initial calibration (baseline) was performed after the theoretical-practical training session, and consisted of examining 20 children; the second calibration occurred three months later, and involved evaluating another 18 children. The interexaminer agreement was obtained by kappa statistics, and by overall percentage agreement. The paired t-test was applied to compare the values for kappa means and overall percentage agreement between the time points studied. At baseline, the values for kappa (> 0.81) and overall percentage agreement (> 95.63%) were considered high. At the 3-month calibration assessment, all the examiners showed some decrease in both kappa (p < 0.0001) and overall percentage agreement (p = 0.0102). The calibration process currently proposed by the WHO is effective. However, reproducibility was not maintained over time for inexperienced examiners evaluating the posterior teeth of 5-year-old children, under epidemiological conditions.

Relationship between aesthetic concern and self-esteem in adolescents with severe malocclusion.

OBJECTIVE: This study aimed to evaluate the relationship between aesthetic concern and self-esteem in adolescents with severe malocclusion. METHODS: A cross-sectional study developed with 543 adolescents from 11 to 13 years of age and severe malocclusion was selected. Dental aesthetic index (DAI) diagnosed the malocclusion and selected the groups with greater severity (DAI 3 and 4). Aesthetic concern was assessed using the oral aesthetic subjective impact scale (OASIS) and considered an outcome variable. The global negative self-evaluation (GSE) evaluated self-esteem. The variables were analysed using Poisson multiple regression and the model adjustment determined by the Akaike information criterion (AICC). The effect of each variable on OASIS was expressed as a prevalence ratio (PR) with 95% confidence intervals. The analyses were performed using the R program with a significance level of 5%. RESULTS: A significant association was observed between aesthetic concern scores and self-esteem (p<.05). Individuals with low self-esteem had OASIS scores 14% higher (PR: 1.14; 95% CI: 1.08-1.21). There was no significant association between OASIS and gender and age (p>.05). CONCLUSIONS: Self-esteem modulates how the individual perceives malocclusion. Adolescents with severe and very malocclusion and low self-esteem have greater aesthetic concerns.

Women's oral health-related quality of life as a risk factor for TMD symptoms. A case-control study.

OBJECTIVE: To investigate the association between temporomandibular disorder (TMD) symptoms and women's oral health-related quality of life (OHRQoL).Methods: An observational case-control study was performed with 765 adult women aged 21.5 years on average. Oral Health Impact Profile (OHIP-14) assessed OHRQoL and determined the selection of cases and controls matched by age and marital status at a ratio of 1:4 (153 cases: 612 controls). American Academy of Orofacial Pain's self-explanatory questionnaire assessed the TMD symptoms. The TMD symptoms' impact on OHRQoL was analyzed, estimating the odds ratio with a 95% confidence interval. RESULTS: Of the women, 86.9% in the case group, and 69.6% in the control group presented some TMD symptoms (p< 0.05). Women with an impacted OHRQoL are 2.95 (95% CI:1.79-4.86) times more likely to report some TMD symptoms (p< 0.05). DISCUSSION: Women with a negative impact on OHRQoL are more likely to report TMD symptoms.

Should midline diastema in mixed dentition be an aesthetic concern?

BACKGROUND: Mixed dentition determines an important period of occlusion development in childhood. OBJECTIVE: This study aimed to evaluate the aesthetic impact of the midline diastema cut-off point in mixed dentition. DESIGN: A cross-sectional study was performed with 257 children aged 8-10 years in late mixed dentition, with midline diastema of 1-5 mm and normal maxillary overjet. Orthodontic Aesthetic Subjective Impact Score determined the aesthetic impact of the midline diastema. Four quartiles of diastema measurements and impact scores were considered as cut-off points. Receiver Operating Characteristic curves were constructed, and the distances representing the distances to the ideal point were calculated. The Yuden index determined the efficiency of measuring the diastema to assess the aesthetic impact. The Kruskal-Wallis test compared the groups of participants classified according to the diastema cut-off by the sample quartile regarding the impact score. The analyses were performed with a significance level of 5%. RESULTS: There was no significant difference between the four groups of measurement quartiles of the diastema regarding the aesthetic impact (P > .05). CONCLUSIONS: The perception of dental aesthetics in mixed dentition children was not affected by the midline diastema, regardless of the cut-off point.

A resistência ao cisalhamento aumenta com o elástico com amortecedor de impacto associado ao bráquete ortodôntico? / Does shear bond strength improve with the elastic with impact buffer associated with the orthodontic bracket?

Resumo Objetivou-se avaliar in vitro a resistência ao cisalhamento (RUC) do bráquete ortodôntico associado ao elástico Guard como absorvedor de impactos e o índice de remanescente adesivo (IRA). Sessenta pré-molares humanos foram selecionados e distribuídos aleatoriamente em três grupos (n = 20): G1) sem elástico; G2) com elástico convencional (3M Unitek) e G3) com elástico Guard (3M Unitek). Os bráquetes Kirium Roth 0.22 (3M ESPE) foram fixados no terço médio da face vestibular do dente com resina Transbond XT (3M Unitek) e fotoativados por 3 segundos em cada face do bráquete com o dispositivo Valo (Ultradent). Após armazenamento por 24 horas, as amostras foram submetidas a uma velocidade de 1 mm/minuto. Os bráquetes foram retirados e o IRA avaliado em estereomicroscópio (Olympus) em aumento de 8x. Os dados do RUC foram submetidos à análise de variância e teste de Tukey (α = 0,05), e os dados ARI foram submetidos ao teste exato de Fisher. G3 mostrou valores RUC (20,1 ± 4,5) significativamente mais elevados do que o Grupo G1 sem elástico (15,3 ± 3,7) (P < 0,05). Não foi observada diferença estatística entre G2 (16,9 ± 6,0) e os demais grupos (P > 0,05). Não houve diferença significativa entre os grupos na avaliação do IRA (P = 0,3303). Em conclusão, a resistência ao cisalhamento do bráquete foi maior quando associado ao elástico Guard, sendo estatisticamente significante em relação aos bráquetes sem elástico. Menos da metade da resina permaneceu no dente em todos os grupos estudados para o IRA.(AU)

Abstract This in vitro study aimed to evaluate the shear bond strength (RUC) of the orthodontic bracket associated with the Guard elastic as an impact absorber and the remaining adhesive index (ARI). Sixty human premolars were selected and randomly distributed in three groups (n = 20): G1) without elastic; G2) with conventional elastic (3M Unitek); and G3) with Guard elastic (3M Unitek). Kirium Roth slot brackets 0.22 inch (3M ESPE) was fixed to the middle third of the buccal face of the tooth with Transbond XT resin (3M Unitek) and photoactivated for 3 seconds on each bracket face with the Valo (Ultradent) device. After storage for 24 hours, the samples were subjected to a speed of 1 mm/minute. The brackets were taken off, and the ARI was evaluated in a tereomicroscope (Olympus) in 8x magnification. The RUC data were subjected to analysis of variance and Tukey's test (α = 0.05), and ARI data were subjected to Fisher's exact test. G3 showed RUC values (20.1 ± 4.5) significantly higher than the group without elastic G1 (15.3 ± 3.7) (P < 0.05). No statistical difference was observed between G2 (16.9 ± 6.0) and the other groups (P > 0.05). There was no significant difference between groups in the assessment of ARI (P = 0.3303). In conclusion, completing the RUC of the Guard and the conventional elastic band was superior concerning the other groups. Less than half of the resin remained in the tooth in all groups studied for the ARI. (AU)

Longitudinal study for dental caries calibration of dentists unexperienced in epidemiological surveys

Abstract This study aimed to make a longitudinal analysis of interexaminer calibration reproducibility in diagnosing dental caries in posterior teeth, by examiners without previous experience in epidemiological studies. A group of 11 inexperienced examiners underwent theoretical-practical training and calibration assessments, assisted by a standard examiner. An examiner who did not participate directly in the research selected 5-year-old children with and without caries. The D3 diagnostic threshold was used to evaluate dental caries, based on the World Health Organization (WHO) criteria. The initial calibration (baseline) was performed after the theoretical-practical training session, and consisted of examining 20 children; the second calibration occurred three months later, and involved evaluating another 18 children. The interexaminer agreement was obtained by kappa statistics, and by overall percentage agreement. The paired t-test was applied to compare the values for kappa means and overall percentage agreement between the time points studied. At baseline, the values for kappa (> 0.81) and overall percentage agreement (> 95.63%) were considered high. At the 3-month calibration assessment, all the examiners showed some decrease in both kappa (p < 0.0001) and overall percentage agreement (p = 0.0102). The calibration process currently proposed by the WHO is effective. However, reproducibility was not maintained over time for inexperienced examiners evaluating the posterior teeth of 5-year-old children, under epidemiological conditions.

Impact of Dental Aesthetic Index characteristics on the severity levels of malocclusion in a non-White population.

INTRODUCTION: This study evaluated the impact of the esthetic and occlusal characteristics of the Dental Aesthetic Index (DAI) on the need for orthodontic treatment in a non-White population. METHODS: A cross-sectional study was conducted with 1296 non-White adolescents aged 12 years. DAI was the outcome variable (DAI 1 and 2 and DAI 3 and 4). The independent variables were categorized on the basis of the occlusal esthetic characteristics evaluated by DAI (tooth absence, crowding, spacing, midline diastema, maxillary misalignment, mandibular misalignment, maxillary anterior overjet, mandibular overjet, anterior open bite, and anteroposterior molar relationship). Simple logistic regression models were adjusted for the outcome, and the raw odds ratios were estimated. Variables with a P value of <0.20 for individual analyses were tested in a multiple logistic regression model, with P ≤0.05 remaining. RESULTS: A total of 1296 adolescents (764 girls and 532 boys) were evaluated; 1067 (82.3%) had DAI 1 or 2 (minor to a moderate need for orthodontic treatment), and 229 (17.7%) had DAI 3 or 4 (defined need for orthodontic treatment). The results showed that adolescents with diastema, maxillary irregularity, mandibular irregularity, mandibular overjet, anterior open bite, and the altered molar relationship had 5.34, 2.36, 2.63, 3.56, 8.73, and 5.16 times more likelihood to have DAI 3 or 4 (P ≤0.05), respectively. CONCLUSIONS: Diastema, maxillary and mandibular misalignment, mandibular overjet, anterior open bite, and anteroposterior molar relationship were the characteristics that influenced the determination of the need for orthodontic treatment in a non-White population using the DAI index.

The impact of erosive tooth wear related to masticatory quality in an indigenous Brazilian population: A cross-sectional study.

OBJECTIVE: The study aimed to associate the impact of tooth wear with the perception of masticatory quality and eating habits in a Brazilian indigenous population. METHODS: A cross-sectional observational study was carried out with 197 indigenous from the Macuxi tribe (Roraima, Brazil) divided into age groups (adolescents and adults). Tooth wear was determined by the Basic Erosive Wear Examination (BEWE). The masticatory quality was evaluated using the Quality of Masticatory Function Questionnaire (QMFQ). Study participants also answered questions regarding eating habits and frequency of food consumption. Logistic regression models and crude Odds Ratios were estimated with 95% confidence intervals. Variables with P<0.20 in simple analyses were tested in a multiple logistic regression model; those with P ≤ 0.05 remained in the model. RESULTS: Tooth wear was observed in 38.1% of the indigenous, and 48.2% of them reported having their masticatory function affected; banana was the most frequently consumed item (54.3%); there was a significant association between adulthood and the presence of tooth wear (P<0.0001). CONCLUSIONS: Tooth wear related to eating habits and poor masticatory quality did not impact the oral health condition of the studied indigenous population. However, adulthood was associated with tooth wear in this sample.

Correlation between malocclusion and history of bullying in vulnerable adolescents.

OBJECTIVES: To assess the correlation between malocclusion and a history of bullying. MATERIALS AND METHODS: A cross-sectional study of 494 adolescents aged 12 to 15 years was conducted. The National School Health Survey questionnaire (PeNSE 1 and 2) was used to determine history of bullying by identifying the victim and the abuser. Variables were evaluated based on the individual (age), environment (income, father's and mother's education, housing, government assistance, and parents' occupation), social and emotional well-being (CPQ11-14 domains), self-perceived need for orthodontic treatment, and clinical conditions (crowding, diastema, maxillary and mandibular overjet, and anterior open bite). Data were analyzed by Spearman correlation and by multivariate analysis, which allowed graphical representation of the eight variables studied in only two dimensions. RESULTS: There was no correlation between bullying and variables related to the individual and the environment. Maxillary overjet and self-perception related to the need for orthodontic treatment were important to explain the data variability. CONCLUSIONS: Malocclusion did not correlate with bullying history. However, increased maxillary overjet influences adolescent self-perception, suggesting a potential condition for bullying events.

Parental perception of malocclusion, its severity and aesthetic concerns in children with mixed dentition: A cross-sectional study.

OBJECTIVE: This study aimed to associate the parents' perception of the need for treatment and the children's aesthetic concern, considering the influence of malocclusion severity levels. METHODS: A population-based cross-sectional study was conducted with 770 children aged 8 to 10 years in the mixed dentition stage. A closed question sent to parents assessed the subjective orthodontic treatment need (outcome). Orthodontic Aesthetic Subjective Impact Score (OASIS) evaluated children's aesthetic concerns, and the Dental Aesthetic Index (DAI) diagnosed the anterior characteristics and malocclusion severity levels. Individual analyses were performed relating the outcome as independent variables. The variables with P<0.20 in the individual analyses were tested in multiple logistic regression models, and those with P<0.10 remained in the model. The adjusted odds ratio was estimated with a 95% confidence interval. RESULTS: Parents of children with higher aesthetic concerns are 1.82 times more likely to believe that their child needs orthodontic treatment (P<0.05). Parents of children with very severe malocclusion are 1.91 times more likely to perceive their child's need for orthodontic treatment (P<0.05). CONCLUSION: Parents of children with greater aesthetic concerns are more likely to perceive the need for orthodontic treatment, and very severe malocclusion also influences parents' perception of the need for orthodontic treatment.

Esthetic impact of maxillary midline diastema and mandibular crowding in children in the mixed dentition.

INTRODUCTION: This study aimed to investigate the esthetic impact of mandibular crowding and maxillary midline diastema in children in the mixed dentition. METHODS: The sample for this cross-sectional study comprised 785 children, aged 8-10 years, in the late mixed dentition. Mandibular crowding and maxillary midline diastema were evaluated clinically with the Dental Aesthetic Index. Mandibular crowding and maxillary midline diastema were evaluated to determine tooth size-arch length discrepancies. The sample was stratified as group 1, children without maxillary midline diastema or mandibular crowding (n = 177); group 2, children with maxillary midline diastema (n = 256); group 3, children with mandibular crowding (n = 208); and group 4, children with maxillary midline diastema and mandibular crowding (n = 144). The subjective esthetic impact was evaluated using the Orthodontic Aesthetic Subjective Impact Score. Descriptive and exploratory analyses of the data were performed. A generalized linear model was applied, adjusted for the possible confounding variables (age, gender, and race) with a significance level of 5% because the Orthodontic Aesthetic Subjective Impact Score did not meet the assumptions of analysis of variance. RESULTS: Children in groups 2 and 3 showed greater esthetic concern than group 1 (P <0.05). Children in groups 2 and 3 did not show a significant difference with children in group 4 (P >0.05). CONCLUSIONS: Children with mixed dentition with mandibular crowding or maxillary median diastema reported significantly more esthetic concern than children without these conditions.

Use of dentifrices and mouthwashes during orthodontic treatment in the clinical management of orthodontists / Utilização de dentifrícios e colutórios durante o tratamento ortodôntico na conduta clínica dos ortodontistas

ABSTRACT Objective: To evaluate the knowledge of orthodontic professionals regarding the prescription of dentifrices and antiseptics during orthodontic treatment. Methods: An observational and descriptive exploratory study of national scope was conducted with 440 Brazilian orthodontists, based on previous sample calculations, to evaluate the clinical practice of orthodontists in prescribing dentifrices and antiseptics. Self-managed electronic questionnaires were sent to orthodontic professionals. The data were analyzed by means of absolute and relative frequency distribution tables. Results: It was verified that the most indicated mouthwash (39.8%) was Colgate Periogard® and 421 of the participants (95.7%) know its active ingredient (chlorhexidine digluconate). Besides Colgate Periogard® antiseptic, the participants were also questioned about which active ingredient present on the following antiseptics, whose assertive answers were in the following order of %, Cepacol® (Sanofi-Aventis®) with 60.7%, Colgate Plax® (Colgate®) with 54.5% and Listerine® (Jhonson&Jhonson®) with 51.6%. As for the chlorhexidine therapeutic regime, 63.9% have stated assertively its use, being this one of 2 times a day during 7 to 10 days. The most indicated tooth was Colgate Total 12®, and 60.18% of these individuals correctly indicated its active compound. Conclusion: According to the methodology employed, it could be concluded that orthodontic professionals know and prescribe methods of chemical control to patients during orthodontic treatment and most identify the active chemical compounds present in antiseptic and tooth formulas.

RESUMO Objetivo: Avaliar o conhecimento dos profissionais da ortodontia quanto à prescrição de dentifrícios e antissépticos durante o tratamento ortodôntico. Métodos: Foi realizado um estudo observacional e descritivo exploratório de abrangência nacional com 440 ortodontistas brasileiros, baseado em cálculo amostral prévio, para avaliação da prática clínica dos ortodontistas na prescrição de dentifrícios e antissépticos. Questionários eletrônicos auto administrados foram enviados aos profissionais da Ortodontia. Os dados foram analisados por meio de tabelas de distribuição de frequência absolutas e relativas. Resultados: Verificou-se que o antisséptico bucal mais indicado (39,8%) foi o Colgate Periogard® (Colgate®) e 421 dos participantes (95,7%) conhecem o seu ingrediente ativo (digluconato de clorexidina). Além do antisséptico Colgate Periogard®, os participantes também foram questionados sobre qual o ingrediente ativo presente nos seguintes antissépticos, cujas respostas assertivas estavam na seguinte ordem %, Cepacol® (Sanofi-Aventis®) com 60,7%, Colgate Plax® (Colgate®) com 54,5% e Listerine® (Jhonson&Jhonson®) com 51,6%. Quanto ao regime terapêutico da clorexidina 63,9% indicaram assertivamente sua utilização sendo a mesma de 2 vezes ao dia durante 7 a 10 dias. O dentifrício mais indicado foi o Colgate Total 12®, sendo que 60,18% desses indivíduos indicaram corretamente seu composto ativo. Conclusão: De acordo com a metodologia empregada, pôde-se concluir que os profissionais da ortodontia conhecem e prescrevem métodos de controle químico aos pacientes durante o tratamento ortodôntico e a maioria identifica os compostos químicos ativos presentes nas fórmulas de antissépticos e dentifrícios.

What Factors are Associated with Health-Related Quality of Life in Mixed Dentition Children?

Abstract Objective: To associate the OHRQoL and HRQoL in mixed dentition children with the influence on age range, socioeconomic and clinical variables. Material and Methods: A cross-sectional study was carried out with 1,240 children between 6 and 12 years of age. HRQoL was assessed by the Quality of Life Assessment Scale, considered an outcome variable. OHRQoL was determined using specific questionnaires related to the age group: Oral Health Impact Scale in Early Childhood, Child Perceptions Questionnaire for 8 to 10 years, and 11 to 12 years. Dental caries and malocclusion were diagnosed. The socioeconomic class was evaluated. A multiple negative binomial regression analysis was used to test the relationship between HRQoL, OHRQoL scores and socioeconomic and clinical variables. Correlation analyses were performed between the total HRQoL and OHRQoL, with a significance level of 5%. Results: The HRQoL is inversely related to the impact of OHRQoL (p<0.05), modulated by the age group. There was a significant weak negative correlation between the HRQoL scores and the impact of OHRQoL (p<0.05). Conclusion: The OHRQoL impacts the HRQoL, modulated by the age group and with minor influence from socioeconomic and clinical variables (AU).

A Multivariate Analysis of the Psychosocial Impact of Malocclusion and Self-Esteem in Adolescents

Abstract Objective: To evaluate the psychosocial impact of malocclusion and self-esteem in adolescents in the Amazon region. Material and Methods: A cross-sectional study was carried out with 212 adolescents with 12-year-old enrolled in all public schools in the Boca do Acre (Amazonas, Brazil). Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) assessed the psychosocial impact of malocclusion. The self-perception of the need for orthodontic treatment was evaluated by the Aesthetic Component (AC) of the Index of Orthodontic Treatment Need (IOTN) and Global Negative Self-evaluation (GSE), the adolescent's self-esteem. The malocclusion was clinically evaluated by the Dental Aesthetic Index (DAI). The variables with p<0.20 in the individual analyses were tested in multiple logistic regression models, and those with p<0.10 remained in the model. The adjusted odds ratio (OR) was estimated with a 95% confidence interval (CI). Results: Adolescents with low self-esteem were 2.20 (95% CI: 1.23-3.93) times more likely to have a more significant impact on dental aesthetics (p<0.05). When verified by domains, the adolescents with low self-esteem had 2.33 (95% CI: 1.31-4.17) and 1.93 (95% CI: 1.09-3.42) times more likely to impact the psychological and social domains of the PIDAQ, respectively. Conclusion: Self-esteem influenced adolescents' perception of dental aesthetics in the domains related to psychological and social impact (AU).

A double-blinded randomized clinical trial of pain perception during orthodontic treatment / Ensaio clínico randomizado duplo cego de percepção da dor durante tratamento ortodôntico

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.

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.

Alterações dimensionais de maxilas portadoras de caninos impactados / Dimensional changes of maxillas with impacted canines

O objetivo do estudo foi avaliar medidas do arco superior realizadas em imagens por Tomografia Computadorizada de Feixe Cônico (TCFC) de pacientes com caninos impactados localizados por vestibular e palatino. Método: A amostra consistiu de imagens axiais de TCFC de 63 pacientes de ambos os sexos (44 do sexo feminino e 19 do masculino) com média de idade de 17,8 anos. Empregou-se software OnDemand® 3D para obter as medidas de distância intermolar, perímetro e comprimento maxilar. Inicialmente, foi realizada análise descritiva e exploratória dos dados. Foi aplicado teste t de Student para comparar os dois grupos com canino impactado uni e bilateralmente e análise de variância (ANOVA) para comparar os grupos, quanto à posição do canino impactado, por vestibular ou palatino. A reprodutibilidade entre as medidas foi avaliada pelo coeficiente de correlação intraclasse (ICC), considerado o nível de significância de 5% Resultados: Pôde-se verificar que do total de voluntários, 39 indivíduos apresentavam caninos impactados unilateralmente e 24 bilateralmente. Desses, 26 apresentavam-se na posição vestibular e 37 na posição palatina. Observou-se que a distância intermolares foi significativamente menor no grupo com canino impactado bilateralmente (p<0,05), o perímetro e o comprimento do arco maxilar não diferiram significativamente entre os pacientes com caninos impactados unilateral ou bilateralmente (p>0,05). Porém esses parâmetros se apresentaram significativamente menores (p<0,05) nos pacientes com canino impactados na posição palatina. Conclusões: Maxilas com caninos impactados bilateralmente apresentam distância intermolar menor e caninos impactados por palatino estão presentes em maxilas com o menor perímetro de arco.(AU)

Objective: The purpose of the study was to evaluate measurements of the upper arch performed by Cone Beam Computed Tomography (CBCT) images of patients with impacted canines located in the vestibular and palatal areas. Method: The sample consisted of axial CBCT images of 63 patients of both genders (44 female and 19 male) with a mean age of 17.8 years. OnDemand® 3D software was used to obtain the measurements of intermolar distance, perimeter and maxillary length. Initially, descriptive and exploratory data analysis was performed. Student t test was applied to compare the two groups with unilaterally and bilaterally impacted canines, and analysis of variance (ANOVA) was used to compare the groups regarding the position the impacted canine, either vestibular or palatal. Reproducibility between measurements was evaluated by the intraclass correlation coefficient (ICC), considering the level of significance of 5%. Results: It was possible to verify that of the total number of volunteers, 39 individuals had unilaterally and 24 bilaterally impacted canines. Of these, 26 were in the vestibular position and 37 in the palatal position. It was observed that the intermolar distance was significantly smaller in the group with bilaterally impacted canines (p<0.05), the perimeter and maxillary arch length did not differ significantly among patients with unilaterally or bilaterally impacted canines (p>0.05). However, these parameters were significantly lower (p<0.05) in patients with impacted canines in the palatal position. Conclusions: Maxillas with bilaterally impacted canines present smaller intermolar distance, and palatal canines impacted are present in maxillary with the smallest arch perimeter.(AU)

Impact of facial profile on young adults' oral health-related quality-of-life item levels: A hierarchical analysis.

OBJECTIVE: To assess the impact of facial profile on young adults' oral health-related quality of life (OHRQoL) item levels. METHODS: A cross-sectional study was carried out with a population-based sample of 205 young adults, with a mean age of 23.1 years. The individuals answered questions about OHRQoL (OHIP-14) and self-esteem (Global Negative Self-Evaluation). The Dental Health Component (DHC) of the Index of Orthodontic Treatment Need (IOTN) was used to evaluate normative orthodontic treatment needs and define dental malocclusion clinically. Facial profile was analyzed using photographs and dichotomized into two levels: normal (straight) and altered facial profile (convex or concave). A calibrated researcher performed the clinical examination. Association between the independent variables and the outcome (OHRQoL) was established by hierarchical multiple linear regression analysis for each item level. Considering the variable of interest (facial profile), the psychological incapacity domain was the most affected item. RESULTS: Individuals with changed facial profile had 2.47 (1.04-5.85) times higher chances of reporting impacts on psychological incapacity than those with a normal profile (p> 0.05). The association was modulated by dental malocclusion and self-esteem. CONCLUSIONS: The convex and concave facial profile showed a negative impact on the psychological aspects of young adults' quality of life.