O presente estudo retrospectivo objetivou correlacionar a recidiva da sobremordida e da sobressaliência com a recidiva do apinhamento dos incisivos ântero-superiores e ântero-inferiores. A amostra consistiu de 34 pacientes (17 de cada gênero),apresentando más oclusões iniciais de Classe I e II,tratados sem extração e mecânica Edgewise.O tempo médio de duração do tratamento foi de 2,19 anos e os tempos de contenção e pós-contenção foram de 1,46 e 5,31 anos respectivamente. Todos os pacientes apresentavam, pelo menos, 3 mm de sobremordida e 4 mm de sobressaliência e apinhamento superior e inferior, de suave a severo. Foram medidos nos modelos de estudo das fases pré (T1), pós-tratamento (T2) e pós-contenção (T3) a sobremordida, a sobressaliência e o índice de irregularidade de Little superior e inferior. Após a obtenção dos dados, passou-se à análise estatística. A comparação intergrupos foi realizada por meio do teste t independente. Os testes ANOVA e Tukey foram apl icados para verificar se houve recidiva da sobremordida, da sobressaliência e dos apinhamentos ântero-superior e ântero-inferior. Para verificação da presença de correlação entre a recidiva da sobremordida, da sobressaliência e do apinhamento anterior, utilizou-se o teste de correlação de Pearson. Os resultados evidenciaram recidiva estat ist icamente signi ficante para o apinhamento ântero-super ior e ântero- infer ior . Houve correlação entre a recidiva da sobremordida e da sobressaliência, no entanto, não houve relação entre essas duas recidivas e o apinhamento anterior. / The present study aimed to correlate, by means of a retrospective analysis, the postretention stability of the overbite and overjet with the relapse of the crowding of maxillary and mandibular anterior teeth. The sample comprised 34 subjects (17 of each gender), at a mean initial age of 12.89 years, presenting Class I and II malocclusions, treated nonextraction and Edgewise mechanics.All patients presented at least 3mm of overbite and 4mm of overjet and maxillary and mandibular crowding from slight to severe. It was measured, in the dental casts from the stages pretreatment (T1), posttreatment (T2) and postretention (T3), the overbite, overjet and the maxillary and mandibular Little irregularity index. After data were obtained, the statistical analysis was performed. The intergroup comparison was performed by independent t tests. The ANOVA and Tukey tests were applied to verify the relapse of the overbite, overjet and maxillary and mandibular anterior crowding. To verify the presence of correlation among the relapse of the overbite, overjet and the anterior crowding, the Pearsons correlation test was used. Results did not show statistically significant difference between Angles Class I and Class II patients. There was correlation of the relapse of overbite with the relapse of overjet, however, there was no relationship among the relapse of overbite and overjet with the relapse of anterior crowding.

O presente estudo retrospectivo objetivou correlacionar a recidiva da sobremordida e da sobressaliência com a recidiva do apinhamento dos incisivos ântero-superiores e ântero-inferiores. A amostra consistiu de 34 pacientes (17 de cada gênero),apresentando más oclusões iniciais de Classe I e II,tratados sem extração e mecânica Edgewise.O tempo médio de duração do tratamento foi de 2,19 anos e os tempos de contenção e pós-contenção foram de 1,46 e 5,31 anos respectivamente. Todos os pacientes apresentavam, pelo menos, 3 mm de sobremordida e 4 mm de sobressaliência e apinhamento superior e inferior, de suave a severo. Foram medidos nos modelos de estudo das fases pré (T1), pós-tratamento (T2) e pós-contenção (T3) a sobremordida, a sobressaliência e o índice de irregularidade de Little superior e inferior. Após a obtenção dos dados, passou-se à análise estatística. A comparação intergrupos foi realizada por meio do teste t independente. Os testes ANOVA e Tukey foram apl icados para verificar se houve recidiva da sobremordida, da sobressaliência e dos apinhamentos ântero-superior e ântero-inferior. Para verificação da presença de correlação entre a recidiva da sobremordida, da sobressaliência e do apinhamento anterior, utilizou-se o teste de correlação de Pearson. Os resultados evidenciaram recidiva estat ist icamente signi ficante para o apinhamento ântero-super ior e ântero- infer ior . Houve correlação entre a recidiva da sobremordida e da sobressaliência, no entanto, não houve relação entre essas duas recidivas e o apinhamento anterior. / The present study aimed to correlate, by means of a retrospective analysis, the postretention stability of the overbite and overjet with the relapse of the crowding of maxillary and mandibular anterior teeth. The sample comprised 34 subjects (17 of each gender), at a mean initial age of 12.89 years, presenting Class I and II malocclusions, treated nonextraction and Edgewise mechanics.All patients presented at least 3mm of overbite and 4mm of overjet and maxillary and mandibular crowding from slight to severe. It was measured, in the dental casts from the stages pretreatment (T1), posttreatment (T2) and postretention (T3), the overbite, overjet and the maxillary and mandibular Little irregularity index. After data were obtained, the statistical analysis was performed. The intergroup comparison was performed by independent t tests. The ANOVA and Tukey tests were applied to verify the relapse of the overbite, overjet and maxillary and mandibular anterior crowding. To verify the presence of correlation among the relapse of the overbite, overjet and the anterior crowding, the Pearsons correlation test was used. Results did not show statistically significant difference between Angles Class I and Class II patients. There was correlation of the relapse of overbite with the relapse of overjet, however, there was no relationship among the relapse of overbite and overjet with the relapse of anterior crowding.

Objective: Assess the changes in oral health-related quality of life (OHRQoL) of adolescents and their parents after overjet reduction. Materials and Methods: 53 patients between the ages of 11-18 years with increased dental overjet (≥ 6mm) and their parents were selected, of which 28 were pre- and 25 were post-treatment with dental overjet reduced to within normal limits. The data collection instrument was the Child Oral Health Quality of Life (COHQoL) Questionnaire. Results: Adolescents and their parents reported poorer quality of life before orthodontic treatment than after. The improvement in oral health-related quality of life was statistically significant for all health domains except for the social well-being domain. Parental reports on (OHRQoL) were in agreement with their children’s. No statistically significant differences were evident in (OHRQoL) between pre- and post-treatment groups. Conclusions: Adolescents with increased dental overjet ≥6mm experienced substantial psycho-social impacts. Adolescents with increased overjet can accurately recall the initial negative effects of the original malocclusion on their lives, even after a time lapse of five years. Orthodontic treatment significantly improves the perceived quality of life of orthodontic patients and their parents

Objective: Assess the changes in oral health-related quality of life (OHRQoL) of adolescents and their parents after overjet reduction. Materials and Methods: 53 patients between the ages of 11-18 years with increased dental overjet (≥ 6mm) and their parents were selected, of which 28 were pre- and 25 were post-treatment with dental overjet reduced to within normal limits. The data collection instrument was the Child Oral Health Quality of Life (COHQoL) Questionnaire. Results: Adolescents and their parents reported poorer quality of life before orthodontic treatment than after. The improvement in oral health-related quality of life was statistically significant for all health domains except for the social well-being domain. Parental reports on (OHRQoL) were in agreement with their children’s. No statistically significant differences were evident in (OHRQoL) between pre- and post-treatment groups. Conclusions: Adolescents with increased dental overjet ≥6mm experienced substantial psycho-social impacts. Adolescents with increased overjet can accurately recall the initial negative effects of the original malocclusion on their lives, even after a time lapse of five years. Orthodontic treatment significantly improves the perceived quality of life of orthodontic patients and their parents

Syfte: Syftet med den här studien var att undersöka följsamheten och reduktionen av det horisontella överbettet vid behandling med van Beek-aktivator genom att jämföra en rekommenderad användningstid av tolv och åtta timmar per dag. Material och metod: Tretton patienter (4 pojkar och 9 flickor) ingick i undersökningsmaterialet med en medelålder på 10,0 år (SD = 0,9). Alla patienter var diagnostiserade med en Angle Klass II-bettavvikelse och behandlades med van Beek-aktivator. Patienterna var randomiserade i två grupper med två olika användningstider (8 timmar och 12 timmar). Följsamheten mättes med hjälp av en mikrosensor (TheraMon®) inbyggd i aktivatorn och det horisontella och vertikala överbettet registrerades efter första, tredje och sjätte månaden. Efter att datan var insamlad gjordes statistisk analys för att påvisa ifall statistisk skillnad fanns mellan grupperna.Resultat: Medelreduceringen i horisontellt överbett i 8-timmarsgruppen var efter sex månader 3,4 mm jämfört med hos 12-timmarsgruppen som var 3,5 mm. Medelanvändningstiden var i 12-timmarsgruppen och 8-timmarsgruppen 8.2 timmar (SD=1,7) och 7,9 timmar (SD=2,6) per dag respektive. Den genomsnittliga användningstiden för samtliga patienter var 8,1 timmar.Slutsats: Rekommendation av åtta timmar var enklare att uppnå jämfört med tolv timmar. Van Beek-aktivatorn var effektiv för korrigering av Angle Klass II-bettavvikelser, ingen klinisk signifikant skillnad i behandlingseffekt observerades mellan de två grupperna. / Aim: The aim of this study was to evaluate the compliance and overjet changes among patients treated with the van Beek activator comparing a twelve- and eight-hours daily wear-time prescription. Material and methods: The study sample consisted of thirteen patients (4 boys and 9 girls) with a mean age of 10.0 years (SD = 0.9). All patients had a Class II malocclusion and were treated with the van Beek activator. Patients were randomly assigned to two groups with a wear-time of twelve and eight hours respectively. Compliance was measured with the aid of a microsensor (TheraMon®) built into the activator and the overjet and overbite were recorded after the first, third and sixth month. Results: The mean decrease in overjet among the 8 hours group after six months was 3.4 mm compared to the 3.5 mm overjet reduction recorded in the 12 hours group. The mean wear-time in the 12 hours group and 8 hours group were 8.2 hours (SD = 1.7) and 7.9 hours (SD = 2.6) per day respectively. The overall mean daily wear-time of all patients in both groups was 8.1 hours. Conclusions: The eight-hours prescription was easier to achieve compared to the twelve-hours. The van Beek activator was effective in Class II correction, no clinically significant difference in treatment effect was observed between the two wear-time prescriptions.

Syfte: Syftet med denna studie var att utvärdera följsamheten och förändringen i det horisontella överbettet hos patienter som behandlas med en van Beek-aktivator, under det första behandlingsåret, genom att jämföra två rekommenderade användningstider; 8 timmar och 12 timmar. Material och metod: Totalt 20 patienter, 9 flickor och 11 pojkar, med en medelålder på 10,0 år, ingick i undersökningsmaterialet. Samtliga patienter diagnosticerades med en Angle Class II-bettavvikelse, och behandlades med en van Beek-aktivator. Patienterna delades slumpmässigt in i två grupper med olika rekommenderade användningstider; 8 timmar och 12 timmar. Följsamhetsnivån mättes med hjälp av TheraMon®, en mikrosensor, inbäddad i aktivatorn. Följsamheten, det horisontella och det vertikala överbettet registrerades efter 3, 6, 9 och 12 månader. Resultat: I båda grupperna observerades en minskning av både det horisontella och vertikala överbettet. Det fanns ingen signifikant skillnad mellan 8- och 12-timmarsgruppen för reduktion av överbetten. Följsamheten var däremot bättre i 8-timmarsgruppen under hela 12-månadersperioden.Slutsatser: En rekommenderad användningstid på 8 timmar per dag visade en högre nivå av följsamhet än 12 timmar, i den aktuella studien. Ingen klinisk signifikant skillnad i behandlingseffekt upptäcktes mellan 8-timmars och 12-timmars rekommenderad användningstid. Följsamhetsnivån är högre under de första 6 månaderna av en behandling och minskar sedan mellan 6-12 månader. / Aim: The aim of this study was to evaluate the adherence and the changes in overjet among patients treated with the van Beek activator during the first year, comparing two wear-time prescriptions; 8 hours and 12 hours. Materials and methods: The study sample consisted of 20 patients, 9 girls and 11 boys, with a mean age of 10.0 years. All patients were diagnosed with a class II malocclusion and were treated with the van Beek activator. The patients were randomized into two groups with different wear-time prescriptions; 8 hours and 12 hours. The level of adherence was measured with the aid of TheraMon®, a microsensor embedded in the activator. The adherence, overjet and overbite were recorded after 3, 6, 9 and 12 months of treatment. Results: In both groups, a reduction of both overjet and overbite was observed. There was no significant difference between the 8- and 12-hour group for overjet and overbite reduction. The adherence, on the other hand, was better in the 8-hour group during the whole 12-month period. Conclusions: A wear-time prescription of 8 hours per day displayed a higher level of adherence than 12 hours in the present trial. No clinically significant differences in treatment effects were detected between an 8-hour and 12-hour wear-time prescription. The level of adherence is higher during the first 6 months of a treatment and is then reduced between 6-12 months.

Made available in DSpace on 2014-08-20T14:30:11Z (GMT). No. of bitstreams: 1 Tese _Fabio_Garcia_Lima.pdf: 457324 bytes, checksum: 826bb2924e3e1121dfadc9c7b1c286bb (MD5) Previous issue date: 2006-06-12 / Muitos estudos epidemiológicos têm investigado o traumatismo dental em crianças e seus fatores causais. Gênero, overjet e cobertura labial inadequada têm sido classicamente associados, ao passo que atividade física, obesidade e condições socioeconômicas ainda são questões controversas. No entanto, são raros os trabalhos que levem em consideração dados longitudinais prospectivos. Este estudo de coorte de nascimentos prospectiva investigou uma amostra de 359 crianças em quatro momentos diferentes: ao nascimento, aos quatro, aos seis e aos 12 anos de idade, e objetivou estudar a relação entre as exposições ao longo do ciclo vital com o traumatismo dos incisivos permanentes aos 12 anos de idade. Estas crianças foram examinadas quanto ao traumatismo dental (índice de O Brien), situação oclusal e quanto ao sobrepeso (índice da OMS), e entrevistadas, bem como seus responsáveis, para obtenção dos dados referentes a gênero e atividade física. No acompanhamento dos 12 anos, 18 crianças não foram encontradas (5,01%) e em quatro não foi possível executar o exame (1,11%).Traumatismo dental foi detectado em 55 crianças (16,3% [IC95%=12,4-20,3]), com 67 incisivos acometidos, predominantemente com fratura de esmalte, seguida de fratura do esmalte/dentina. A prevalência de trauma foi de 21,67% em meninos e de 10,19% em meninas. À Na regressão logística bivariada, apenas o gênero se mostrou associado ao traumatismo dental, sendo os meninos os mais acometidos (OR=2,44, [IC95%=1,3-4,56] p=0,005). Já no modelo hierárquico, a regressão logística multivariada demonstrou associação do traumatismo dental apenas com o local em que a criança foi cuidada aos quatro anos, sendo a creche fator de risco significativo em relação a casa (OR=5,14, [IC95%=1,68- 15,69]p=0,004). Conclui-se que crianças que foram cuidadas em creches aos quatro anos de idade estão mais susceptíveis ao traumatismo dos incisivos permanentes até os 12 anos de idade.

?rea de concentra??o: Odontopediatria. / Linha de pesquisa: Epidemiologia e controle das doen?as bucais. / Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-07-20T20:17:01Z No. of bitstreams: 2 ednele_fabyene_primo_miranda.pdf: 2236077 bytes, checksum: 899a017f3e19d61a71fc17d64a10d45b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-07-28T17:13:01Z (GMT) No. of bitstreams: 2 ednele_fabyene_primo_miranda.pdf: 2236077 bytes, checksum: 899a017f3e19d61a71fc17d64a10d45b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-07-28T17:13:01Z (GMT). No. of bitstreams: 2 ednele_fabyene_primo_miranda.pdf: 2236077 bytes, checksum: 899a017f3e19d61a71fc17d64a10d45b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Caracter?sticas oclusais est?o associadas ? ocorr?ncia de traumatismo dent?rio em pr?-escolares. Sobressali?ncia acentuada tem sido frequentemente apontada como poss?vel fator de risco para ocorr?ncia de traumatismo dent?rio. No entanto, a mordida aberta anterior, as mordidas cruzadas anterior e posterior e o apinhamento dental t?m sido pouco investigados e apresentam resultados n?o conclusivos na denti??o dec?dua. Assim, o presente estudo buscou investigar a influ?ncia das caracter?sticas oclusais na ocorr?ncia de traumatismo dent?rio em pr?-escolares. Trata-se de um estudo caso-controle de base populacional (1:1), realizado na cidade de Diamantina - Brasil. Ap?s a realiza??o de um estudo transversal as crian?as de 3 a 5 anos de idade com traumatismo dent?rio foram sorteadas para compor o grupo caso (n=200). O grupo controle foi composto por crian?as sem hist?ria de traumatismo dent?rio e pareadas com as crian?as do grupo caso empregando os seguintes crit?rios (1.escola, 2.sexo, 3.idade). As vari?veis independentes foram coletadas por serem de interesse para o estudo (caracter?sticas oclusais) ou por atuarem como potenciais confundidoras (vari?veis sociodemogr?ficas, h?bitos de suc??o e cobertura labial). Os valores de kappa intraexaminador e inter-examinador foram superiores a 0,80 para todas as condi??es bucais avaliadas. Para a an?lise dos dados utilizou-se o programa SPSS 22.0. Foram realizadas as an?lises descritiva, univariada e de regress?o log?stica simples e m?ltipla. Para cada vari?vel de interesse (caracter?stica oclusal), foram criados 5 modelos de ajuste para as vari?veis confundidoras. Na an?lise univariada, observou-se associa??o estatisticamente significativa para as vari?veis, apinhamento anterior superior (p=0,024), mordida aberta (p=<0,001), sobressali?ncia (p=<0,001) e cobertura labial (p=<0,001). Ap?s a regress?o log?stica, a mordida aberta anterior manteve a signific?ncia estat?stica nos cinco modelos de ajuste (OR= 3,80; IC 95%=1,42 ? 10,16). As vari?veis apinhamento anterior superior (OR=2,14; IC 95%=1,00 ? 4,63) e sobressali?ncia (OR= 1,12; IC 95%=0,58 ? 2,17) permaneceram associadas ao grupo caso, independentemente das vari?veis de confundimento (vari?veis sociodemogr?ficas, h?bitos de suc??o e cobertura labial), mas perderam a signific?ncia no modelo 5, quando foram ajustadas por outros tipos de m? oclus?o. Conclui-se que a mordida aberta anterior permaneceu fortemente associada ao traumatismo dent?rio, independentemente das vari?veis de confus?o e de outros tipos de m? oclus?o. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Odontologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / Occlusal characteristics are associated with the occurrence of dental trauma in preschool children. Accentuated overjet has been frequently pointed as a possible risk factor for dental trauma. However, anterior open bite, anterior and posterior crossbite and dental crowding have been little investigated and show non-conclusive results in the deciduous teeth. Therefore, the present study sought to investigate the influence of occlusal characteristics in the occurrence of dental trauma in preschool children. This is a population based case-control study (1:1), held in the city of Diamantina-Brazil. After conducting a cross-sectional study, children between the ages of 3 to 5 years old with dental trauma were randomly chosen to the case group (n=200). The control group was made of children without dental trauma history and paired with the case group children using the following criteria (1. school, 2. gender, 3. age). The independent variables were collected because of the studies? interest (occlusal characteristics) or because of its potential as a confounding factor (sociodemographic variables, suction habits and lip coverage). The intra and inter-examiner kappa values were greater than 0,80 for all of the oral conditions assessed. The SPSS 22.0 program was used for data analysis. The descriptive, univariate, simple and multiple logistics regression analysis were performed. For each variable of interest (occlusal characteristic), five adjustment models for the confounding variables were created. In the univariate analysis, statistically significant association was observed for the variables: superior anterior crowding (p=0,024), open bite (p=<0,001), overjet (p=<0,001) and lip coverage (p=<0,001). After logistic regression, anterior open bite kept the statistic significance in all five adjustment models (OR= 3,80; IC 95%=1,42 ? 10,16). The anterior superior crowding variable (OR=2,14; IC 95%=1,00 ? 4,63) and the overjet variable (OR= 1,12; IC 95%=0,58 ? 2,17) remained associated with the case group, regardless of the confounding variables (sociodemographic variables, suction habits and lip coverage), but lost significance in model 5, when adjusted for other types of malocclusion. In conclusion, anterior open bite remained strongly associated with dental trauma, regardless of the confounding variables and of other types of malocclusion.