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Meire Alves De Sousa - One of the best experts on this subject based on the ideXlab platform.
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Electromyographic analysis of the masseter, temporal and orbicularis oris muscles in young people with class II, division 1 malocclusion after treatment with Extraoral Appliance of occipital traction
[s.n.], 2018Co-Authors: Meire Alves De SousaAbstract:Orientador: Vania Celia Vieira de SiqueiraTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de PiracicabaResumo: A eletromiografia de superfície representa um importante instrumento de avaliação da função muscular. No entanto, apresenta limitações, devido à grande variabilidade que ocorre na amplitude do sinal eletromiográfico obtido. Com o intuito de diminuir essa variabilidade, sugere-se a normalização dos dados coletados, que consiste na divisão do sinal eletromiográfico bruto registrado por um valor de referência, expresso em porcentagem, derivado da própria medida do sinal eletromiográfico. Objetivou-se neste estudo avaliar, por meio da eletromiografia, a ocorrência de alterações na atividade eletromiográfica da porção superficial do músculo masséter, da porção anterior do músculo temporal e dos segmentos superior e inferior do músculo orbicular da boca, bilateralmente, em 25 jovens, entre 8 e 10 anos de idade, com maloclusão Classe II, 1ª divisão dentária, após se submeterem ao tratamento ortodôntico com o aparelho extrabucal, comparando-os com um grupo de 25 jovens com oclusão normal, com idade similar. Além de avaliar se o procedimento de normalização dos dados obtidos influencia no resultado final. Para a captação dos sinais eletromiográficos dos músculos masséter e temporal utilizou-se eletrodos de superfície ativos diferenciais simples, e para o músculo orbicular da boca, eletrodos de superfície passivos de Ag/AgCl. Realizou-se a coleta do sinal na situação de repouso, na contração isométrica e na contração isotônica, antes e após o tratamento ortodôntico no grupo com maloclusão e em períodos similares no grupo com oclusão normal. Por meio de software específico, determinou-se o valor da Root Mean Square (RMS) de cada movimento realizado. Submeteu-se os dados iniciais coletados à normalização, comparando-os com os dados iniciais originais, por meio da análise de variância (ANOVA) para parcelas subdivididas Os resultados demonstraram que o procedimento de normalização influenciou a interpretação dos dados ao suprimir as diferenças existentes entre os grupos, reforçando a idéia de que os resultados originais permitiram conclusões mais adequadas do que os dados normalizados. Com base nesses resultados, optou-se pela utilização dos dados originais para avaliar o efeito do tratamento ortodôntico no grupo com maloclusão. Nesta etapa utilizou-se a ANOVA para medidas repetidas com modelos mistos e o teste de Tukey (a=0,05). Observou-se que ocorreu uma diminuição na atividade eletromiográfica de todos os músculos do grupo com maloclusão e com oclusão normal, entretanto esta diferença não apresentou-se estatisticamente significante para o músculo temporal direito e orbicular da boca, segmento superior. Na fase inicial do estudo o grupo com maloclusão apresentou maior atividade elétrica em todos os músculos do que o com oclusão normal, no entanto, essa diferença não apresentou-se significante para o músculo masséter. Não ocorreram diferenças significativas entre os grupos na fase final do experimento. Concluiu-se que o tratamento com o aparelho extrabucal possibilitou a melhora do padrão muscular das jovens com maloclusão Classe II, 1ª divisão dentária.Abstract: The surface electromyography is an excellent way to evaluate the muscle function. However, it presents limitations, because the great variability in the amplitude of the electromyographic signal obtained. To reduce this variability, has been proposed the normalization of the electromyographic signal. The process consist of dividing the raw electromyographic recorder signal by a reference value expressed as a percentage, derived from measure of the electromyographic signal itself. The purpose of this study was to evaluate electromyographically the action potential of the superficial masseter muscle, the anterior temporal muscle, the orbicularis oris muscle, upper and lower segment, bilaterally, in 25 young females, aged ranging from 8 to 10 years old, with Class II division 1 malocclusion after the treatment with Extraoral Appliances and to compare them with 25 young females with normal occlusion, with similar aged. And to evaluate if the experiment final results can be influenced by the normalization of electromyographic data. The electromyographic signals of the masseter and temporal muscles were adquired by active single differential surface electrodes, and of the orbicularis oris muscle by passive surface electrodes of the Ag/AgCl. Muscle activity was recorded in resting position, in isometric contraction and in isotonic contraction, before and after orthodontic treatment in the malocclusion group and similar periods in the normal occlusion group. Through of specific software was determined the Root Mean Square (RMS) values of each movement. The initial data collected were submitted to the normalization procedure and were compared with the initial raw data, through of statistical analyses of variance. The results showed that the normalization procedure was able to affect the electromyographic data, suppressing the difference between the groups. This support the idea that the raw data were able to produce better conclusions than normalized data. Thus, the orthodontic treatment of the malocclusion group was evaluated using the raw data, through of statistical analyses of variance and Tukey test (a=0,05). The results showed that there was decrease of the electromyographic activity in all the muscles, in both groups difference between the groups, but that difference was not statistically significant for the right temporal muscle and the orbicularis oris muscle upper segment The muscle activity was higher in the malocclusion group than normal occlusion group in the initial phase, but that difference was not statistically significant for the masseter muscle. In the final phase there was not significant difference between the groups. It was concluding that the treatment with Extraoral Appliances was able to improve the muscular pattern of the young females with Class II division 1 malocclusion.DoutoradoOrtodontiaDoutor em Radiologia Odontológic
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Electromyographic analysis of the masseter, temporal and orbicularis oris muscles in young people with class II, division 1 malocclusion after treatment with Extraoral Appliance of occipital traction
2017Co-Authors: Meire Alves De SousaAbstract:Resumo: A eletromiografia de superfície representa um importante instrumento de avaliação da função muscular. No entanto, apresenta limitações, devido à grande variabilidade que ocorre na amplitude do sinal eletromiográfico obtido. Com o intuito de diminuir essa variabilidade, sugere-se a normalização dos dados coletados, que consiste na divisão do sinal eletromiográfico bruto registrado por um valor de referência, expresso em porcentagem, derivado da própria medida do sinal eletromiográfico. Objetivou-se neste estudo avaliar, por meio da eletromiografia, a ocorrência de alterações na atividade eletromiográfica da porção superficial do músculo masséter, da porção anterior do músculo temporal e dos segmentos superior e inferior do músculo orbicular da boca, bilateralmente, em 25 jovens, entre 8 e 10 anos de idade, com maloclusão Classe II, 1ª divisão dentária, após se submeterem ao tratamento ortodôntico com o aparelho extrabucal, comparando-os com um grupo de 25 jovens com oclusão normal, com idade similar. Além de avaliar se o procedimento de normalização dos dados obtidos influencia no resultado final. Para a captação dos sinais eletromiográficos dos músculos masséter e temporal utilizou-se eletrodos de superfície ativos diferenciais simples, e para o músculo orbicular da boca, eletrodos de superfície passivos de Ag/AgCl. Realizou-se a coleta do sinal na situação de repouso, na contração isométrica e na contração isotônica, antes e após o tratamento ortodôntico no grupo com maloclusão e em períodos similares no grupo com oclusão normal. Por meio de software específico, determinou-se o valor da Root Mean Square (RMS) de cada movimento realizado. Submeteu-se os dados iniciais coletados à normalização, comparando-os com os dados iniciais originais, por meio da análise de variância (ANOVA) para parcelas subdivididas Os resultados demonstraram que o procedimento de normalização influenciou a interpretação dos dados ao suprimir as diferenças existentes entre os grupos, reforçando a idéia de que os resultados originais permitiram conclusões mais adequadas do que os dados normalizados. Com base nesses resultados, optou-se pela utilização dos dados originais para avaliar o efeito do tratamento ortodôntico no grupo com maloclusão. Nesta etapa utilizou-se a ANOVA para medidas repetidas com modelos mistos e o teste de Tukey (a=0,05). Observou-se que ocorreu uma diminuição na atividade eletromiográfica de todos os músculos do grupo com maloclusão e com oclusão normal, entretanto esta diferença não apresentou-se estatisticamente significante para o músculo temporal direito e orbicular da boca, segmento superior. Na fase inicial do estudo o grupo com maloclusão apresentou maior atividade elétrica em todos os músculos do que o com oclusão normal, no entanto, essa diferença não apresentou-se significante para o músculo masséter. Não ocorreram diferenças significativas entre os grupos na fase final do experimento. Concluiu-se que o tratamento com o aparelho extrabucal possibilitou a melhora do padrão muscular das jovens com maloclusão Classe II, 1ª divisão dentáriaAbstract: The surface electromyography is an excellent way to evaluate the muscle function. However, it presents limitations, because the great variability in the amplitude of the electromyographic signal obtained. To reduce this variability, has been proposed the normalization of the electromyographic signal. The process consist of dividing the raw electromyographic recorder signal by a reference value expressed as a percentage, derived from measure of the electromyographic signal itself. The purpose of this study was to evaluate electromyographically the action potential of the superficial masseter muscle, the anterior temporal muscle, the orbicularis oris muscle, upper and lower segment, bilaterally, in 25 young females, aged ranging from 8 to 10 years old, with Class II division 1 malocclusion after the treatment with Extraoral Appliances and to compare them with 25 young females with normal occlusion, with similar aged. And to evaluate if the experiment final results can be influenced by the normalization of electromyographic data. The electromyographic signals of the masseter and temporal muscles were adquired by active single differential surface electrodes, and of the orbicularis oris muscle by passive surface electrodes of the Ag/AgCl. Muscle activity was recorded in resting position, in isometric contraction and in isotonic contraction, before and after orthodontic treatment in the malocclusion group and similar periods in the normal occlusion group. Through of specific software was determined the Root Mean Square (RMS) values of each movement. The initial data collected were submitted to the normalization procedure and were compared with the initial raw data, through of statistical analyses of variance. The results showed that the normalization procedure was able to affect the electromyographic data, suppressing the difference between the groups. This support the idea that the raw data were able to produce better conclusions than normalized data. Thus, the orthodontic treatment of the malocclusion group was evaluated using the raw data, through of statistical analyses of variance and Tukey test (a=0,05). The results showed that there was decrease of the electromyographic activity in all the muscles, in both groups difference between the groups, but that difference was not statistically significant for the right temporal muscle and the orbicularis oris muscle upper segment The muscle activity was higher in the malocclusiongroup than normal occlusion group in the initial phase, but that difference was not statistically significant for the masseter muscle. In the final phase there was not significant difference between the groups. It was concluding that the treatment with Extraoral Appliances was able to improve the muscular pattern of the young females with Class II division 1 malocclusion
Botero, Paola María - One of the best experts on this subject based on the ideXlab platform.
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Tratamientos para la maloclusión Clase II esquelética combinada.
2013Co-Authors: Saldarriaga Valencia, Jenny Angélica, Alvarez Varela Emery, Botero, Paola MaríaAbstract:Class II malocclusion present a variety of dental, skeletal and functional configurations, based on theanteroposterior position of the maxilla and mandible, position of maxillary and mandibular teeth andthe vertical pattern of class II patients, being the retrognatism the most prevalent characteristic inthese patients. The etiology is multifactorial including genetic, familial components and environmentalfactors. The experience of several experts has demonstrated the need to combine different therapeuticmeans to achieve its full effect. Intra and Extraoral Appliances used for the correction of skeletal class IImalocclusion include Hawley plates , bite planes, headgear, functional Appliances (activators, bionator,twin -block, Frankel) , buccal screens, combination of functional with Extraoral Appliance, mini-screws,and more specifically in the case of mandibular posterior rotator patients the use of high-pull headgearcombined with functional Appliances with posterior bite blocks and the most recent treatment,orthodontic miniscrews. Treatment success depends on constant monitoring and evaluation of growthand development of growing Class II patients. This article describes the case of a patient diagnosedwith skeletal class II with a vertical growth pattern.La maloclusión clase II se presenta por una variedad de configuraciones dentales, funcionales yesquelétales, basadas en: la posición anteroposterior del maxilar y de la mandíbula, posición de los dientes maxilares y mandibulares, y el patrón vertical de los pacientes clase II; siendo el retrognatismo lacaracterística más prevalente en estos pacientes. La etiología es multifactorial incluyendo asi la genetica, elcomponente familiar y factores medioambientales. La experiencia de varios expertos ha demostrado quees necesario combinar diferentes medios terapéuticos para poder conseguir unos resultados plenamentesatisfactorios. Los aparatos intra y Extraorales usados para la corrección de la maloclusión esqueléticaclase II han sido: placas de hawley, planos de mordida, tracción Extraoral, aparatología funcional(activadores, bionator, twin-block, Fränkel), las pantallas vestibulares, combinación de aparatologíafuncional con aparatos Extraorales, minitornillos; y más específicamente en el caso de pacientes rotadoresposteriores mandibulares se ha usado la tracción Extraoral combinada con aparatología funcional conbloques posteriores de mordida. El éxito del tratamiento depende del control y de la evaluación constanteal crecimiento y desarrollo de los pacientes clase II en crecimiento. Este artículo describe el caso de unapaciente con diagnóstico de clase II esquelético con patrón de crecimiento vertical
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Alternativas para el tratamiento de hipoplasias maxilares
'Universidad Cesmag', 2012Co-Authors: Meneses Dora, Botero, Paola MaríaAbstract:Class III skeletal malocclusion due to maxillary hypoplasia, compromises esthetics and functional aspects of patients. Different types of treatment have been developed depending on the severity of the deformity. Patients with severe maxillary hypoplasia and those with craniofacial abnormalities are normally treated with an ostegenic distraction after a Lefort I surgery. Mild to moderate skeletal class III patients are treated with facial mask combined with an intraoral device that usually produces dentoalveolar effects secondary to the maxillary protraction that sometimes are not desirable. Recently new methods of intraoral anchorage have been reported to be use with the traditional face mask, such as oseointegrated implants and miniplates. Also bimaxillary miniplates used with intermaxillary elastics can replace the Extraoral Appliance. These new approach has less or none dentoalveolareffectsandthereforecanbeconsideredanidealtreatmentoptionforamixeddentition patient. The present review compares the effects, advantages and disadvantages of the different treatments available for class III skeletal malocclusion.LamaloclusiónclaseIIIporhipoplasiamaxilarconllevaagrandescompromisosestéticosyfuncionales alospacientesquelapadecen. Atravésdelainvestigacionsehandesarrolladodiferentesmodalidades terapéuticas según la severidad del problema. Los pacientes con grandes hipoplasias como los que padecenalteracionescraneofacialesduranteelcrecimientosontratadosusualmentecondistracción osteogénica maxilar luego de una lefort I, en pacientes con hipoplasia leve a moderada con mascara facial la cual genera efectos dentoalveolares desfavorables , indeseables e inevitables. Para reducir estos efectos, los métodos de anclaje óseo han sido desarrollados: mascara facial con anclaje óseos, protracción maxilar con anclajes óseos bimaxilar eliminando el uso de la mascara. Los estudios preliminaresmuestranresultadospromisoriosparaestaúltimamodalidadsobretodoparapacientes en dentición mixta tardía o permanente temprana. Esta revisión describe o compara las ventajas y desventajas así como los efectos de las diferentes alternativas para tratar de manera temprana la clase III por hipoplasia maxilar
Renato Barcellos Rédua - One of the best experts on this subject based on the ideXlab platform.
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Different approaches to the treatment of skeletal Class II malocclusion during growth: Bionator versus Extraoral Appliance
Dental press journal of orthodontics, 2020Co-Authors: Renato Barcellos RéduaAbstract:ABSTRACT Introduction: Class II malocclusion, which has a significant incidence in the population, may compromise facial esthetics and the smile, as well as the masticatory and respiratory functions. Often associated with skeletal abnormalities, it severely affects and compromises quality of life. An accurate diagnosis is fundamental to prepare a treatment plan to correct dental and skeletal anomalies. Objectives: This study discusses treatment alternatives to the correction of Class II division 1 and 2 malocclusion in growing patients, using a Bionator and an Extraoral Appliance.
Ivana Uglik Garbui - One of the best experts on this subject based on the ideXlab platform.
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Controle vertical e alterações mandibulares em individuos tratados com arco extrabucal conjugado
2017Co-Authors: Ivana Uglik GarbuiAbstract:Resumo: O propósito do presente estudo foi avaliar cefalometricamente o controle vertical e as alterações mandibulares em 30 indivíduos, com média de idade ao início do tratamento de 10,45 anos, com maloclusão de Classe 11 de Angle, divisão 1, hiperdivergentes, tratados com arco extrabucal de inserção palatina conjugado com placa expansora encapsulada, com tempo médio de tratamento de 1,1 ano. O teste ANOVA não revelou diferença estatisticamente significante entre os dois momentos avaliados (pré e pós-tratamento) nas grandezas PHF.PO (-0,47:t2,45° para o gênero feminino e -0,73:t3,34° para o masculino) e SN.GoGn (-0,67:t2,48° para o gênero feminino e -0,60:t2,26° para o masculino). Por outro lado, houve redução estatisticamente significante em eixo Y (-0,83:t1,38° para feminino e -0,47:t1,85° para o masculino); ANB (-1,47:t1,09°para o feminino e -1 ,50:t1 ,86° para o masculino); FMA (-2,46:t1,76° para o feminino e 1,13:t2,06° para o masculino); IMPA (-3,47:t2,75° para o feminino e -2,40:t2,26° para o masculino); ocorreu aumento estatisticamente significante em SNB (O,90:t1,64° para o feminino e 1 ,43:t1 ,93° para o masculino); AFA (1 ,80:t2, 14mm para o gênero feminino e 2,20:t1,74mm para o masculino), AFP (1,60:t2,26mm para o feminino e 2,67:t2,61mm para o masculino) e IAF (O,010:t0,041mm para o feminino e 0,022:t0,041mm para o masculino). Concluiu-se que hiperdivergência no terço inferior da face se manteve constante e a correção da discrepância maxilo-mandibular pode ser um resultado combinado da restrição do crescimento maxilar e liberação do crescimento mandibular, sugerindo que o tratamento com o AEB de inserção palatina conjugado à placa expansora encapsulada é uma opção eficiente no tratamento da maloclusão de Classe 11 de Angle, em indivíduos hiperdivergentesAbstract: The purpose of this investigation was to evaluate by cephalometric measurements the vertical control and the mandibular response in 30 subjects, with mean age of 10.45 years at start of the treatment, Class 11 malocclusion division 1 and facial hyperdivergence, who were treated with Extraoral Appliance of palatal insertion combined to encapsulated expander plate during a mean of 1,1 year. The ANOV A test did not reveal statistically difference between the pre and posttreatment values of FHP.OP (female -D.47:t2.45° and male 0.73:t3.34°) and SN.GoGn (female -0.67:t2.48° and male); on the other hand, there was a significant statistically decrease in Y-axis (female -0.83:t1.38° and male 0.47:t1.85°), ANB (female -1.47:t1.09° and male 1.50:t1.86°); FMA (female -2.46:t1.76° and male 1.13:t2.06°), IMPA (female -3.47:t2.75° and male 2.40:t2.26°) e PP.PM (female -2.03:t1.89° and male 0.60:t2.86°), while a significant statistically increase occurred in SNB (female 0.90:t1.64° and male 1.43:t1.93°), FMIA (female 3.47:t2.75° and male 3.47:t3.07°); AFH (female 1.80:t2.14mm and male 2.20:t1.74mm), PFH (female 1.60:t2.26mm and male 2.67:t2.61mm) and the FHI (female 0.010:t0.041mm and male 0.022:t0.041mm). It was concluded that hyperdivergence in lower facial third was not increased during the treatment and the correction of the maxillomandibular discrepancy may be a combined result of maxillary growth restriction and unlocking of the mandibular growth, suggesting that Extraoral Appliance of palatal insertion combined to encapsulated expander plate is an efficient option in the Class II malocclusion treatment in subjects with facial hyperdivergenc
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controle vertical no tratamento da maloclusao classe ii divisao 1 de angle associada a mordida aberta com aparelho extrabucal conjugado vertical control in the treatment of angle s class ii division 1 malocclusion associated with anterior open bite u
RGO - Revista Gaúcha de Odontologia Vol. 59 N° 1 2011, 2011Co-Authors: Slm Marcos Mazali, Ivana Uglik Garbui, Darcy Flávio Nouer, Paulo Roberto Aranha NouerAbstract:Objetivo Avaliar as alteracoes dento-esqueleticas de individuos com maloclusao classe II divisao 1 de Angle associada a mordida aberta anterior, tratados com arco extrabucal de insercao palatina conjugado a placa expansora encapsulada. Metodos Trinta e um pacientes entre seis e nove anos de idade na fase de denticao mista foram tratados em media por 1,2 anos com arco extrabucal conjugado. As telerradiografias iniciais e finais em norma lateral da cabeca foram tracadas por um unico pesquisador tres vezes e os valores medios de cada grandeza foram submetidos aos testes estatisticos t-Student ou Wilcoxon. Resultados A reducao do ângulo SNA (-0,56o ± 1,76) foi a unica alteracao nao significativa. Para as medidas angulares houve aumento significativo para SNB (1,16o ± 1,36) e PHF.PP (1,50o ± 1,35) e reducao significativa de ANB (-1,77o ± 0,84), FMA de (-0,48o ± 1,29), IMPA (-2,03o ± 4,05) SN.Gn de (-0,60o ± 1,15) eSN.GoMe(-0,84o ± 1,60). Nas medidas lineares ocorreu aumento significativo em Altura Facial Anterior (1,23 ± 1,33mm), Altura Facial Posterior (1,40 ± 1,19mm), Indice de Altura Facial (0,01 ± 0,02), C-Max (0,40 ± 0,58mm), C-Mand (2,10 ± 0,96mm), Go-Cd (1,58 ± 1,26mm) e Go-Me (2,02 ± 0,91mm). Conclusao Houve controle vertical no terco inferior da face, com reducao maxilo-mandibular devido a restricao da maxila e liberacao do crescimento mandibular, demonstrando que a terapia com arco extrabucal conjugado com insercao palatina conjugado a placa expansora encapsulada e uma opcao eficiente no tratamento de individuos hiperdivergentes com maloclusao classe II, divisao 1 de Angle associada a mordida aberta anterior. Termos de indexacao: Aparelhos de tracao extrabucal. Maloclusao de Angle Classe II. Mordida aberta. ABSTRACT Objective This study assessed the dental and skeletal changes seen in individuals with Angle’s Class II Division 1 malocclusion associated with anterior open bite treated with headgear coupled with palatal expander. Methods Thirty-one patients aged 6 to 9 years with mixed dentition were treated with headgear for a mean time of 1.2 years. Baseline and final cephalograms were assessed three times by the same researcher and the mean values of each parameter were treated by the Student’s t-test or Wilcoxon test. Results Reduction in the S-N-A angle (-0.56o ± 1.76) was the only change that was not statistically significant. There were significant increases in S-N-B (-1.16o ± 1.36) and FHP.PP (-1.50o ± 1.35) and significant reductions in ANB (-1.77o ± 0.84), SN.Gn (-0.60o ± 1.15), FMA (-0.48o ± 1.29), IMPA (-2.03o ± 4.05) and SN.GoMe (-0.84o ± 1.60). Among linear measurements, a significant increase occurred in anterior facial height (1.23 ± 1.33 mm), posterior facial height (1.40 ± 1.19mm), facial height index (0.01 ± 0.02), total maxillary length (0.40 ± 0.58mm), total jaw length (2.10 ± 0.96mm), Go-Cd (1.58 ± 1.26mm) and Go-Me (2.02 ± 0.91mm). Conclusion There was vertical control of the lower facial third, which reduced the maxillomandibular gap by restricting maxillary growth and encouraging mandibular growth, demonstrating that therapy with headgear coupled with palatal expander is an efficient option for treating hyperdivergent patients with Angle’s Class II Division1 malocclusion associated with open bite. Indexing terms: Extraoral traction Appliances. Malocclusion, Angle Class II. Open bite.
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vertical control in the treatment of angle s class ii division 1 malocclusion associated with anterior open bite using a conjugated Extraoral Appliance
RGO.Revista Gaúcha de Odontologia (Online), 2011Co-Authors: Marcos Mazali, Ivana Uglik Garbui, Darcy Flávio Nouer, Paulo Roberto, Aranha NouerAbstract:Objectivestudy assessed the dental and skeletal changes seen in individuals with Angle’s Class II Division 1 malocclusion associated with anterior open bite treated with headgear coupled with palatal expander. Methods patients aged 6 to 9 years with mixed dentition were treated with headgear for a mean time of 1.2 years. Baseline and final cephalograms were assessed three times by the same researcher and the mean values of each parameter were treated by the Student’s t-test or Wilcoxon test. Resultsin the S-N-A angle (-0.56o ± 1.76) was the only change that was not statistically significant. There were significant increases in S-N-B (-1.16o ± 1.36) and FHP.PP (-1.50o ± 1.35) and significant reductions in ANB (-1.77o ± 0.84), SN.Gn (-0.60o ± 1.15), FMA (-0.48o ± 1.29), IMPA (-2.03o ± 4.05) and SN.GoMe (-0.84o ± 1.60). Among linear measurements, a significant increase occurred in anterior facial height (1.23 ± 1.33 mm), posterior facial height (1.40 ± 1.19mm), facial height index (0.01 ± 0.02), total maxillary length (0.40 ± 0.58mm), total jaw length (2.10 ± 0.96mm), Go-Cd (1.58 ± 1.26mm) and Go-Me (2.02 ± 0.91mm). Conclusion There was vertical control of the lower facial third, which reduced the maxillomandibular gap by restricting maxillary growth and encouraging mandibular growth, demonstrating that therapy with headgear coupled with palatal expander is an efficient option for treating hyperdivergent patients with Angle’s Class II Division1 malocclusion associated with open bite. Indexing terms: Extraoral traction Appliances. Malocclusion, Angle Class II. Open bite.
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Cephalometric assessment of vertical control in the treatment of class II malocclusion with a combined maxillary splint
Brazilian oral research, 2010Co-Authors: Ivana Uglik Garbui, Paulo Roberto Aranha Nouer, Darcy Flávio Nouer, Maria Beatriz Borges De Araújo Magnani, João Sarmento Pereira NetoAbstract:Vertical control is one of the primary objectives sought by orthodontists when treating malocclusions in hyperdivergent individuals. This investigation aimed at assessing vertical control, by cephalometric measurements, during the treatment of Angle Class II Division 1 malocclusion. Thirty cases, selected from the files of the Sao Leopoldo Mandic Dental Research Center, Brazil, of subjects with Angle Class II Division 1 malocclusion and facial hyperdivergence, were used in this study. The patients were treated using a combined Extraoral Appliance during a mean treatment time of 1.1 years. Pre- and posttreatment cephalometric measurements were compared to assess vertical control. The results were submitted to ANOVA (p = 5%). The ANOVA test revealed no statistically significant difference between the pretreatment and posttreatment values of OP (Occlusal plane angle) and SN.MP. While there was a decrease in Y-axis, FMA, and PP.MP, there was an increase in SN.PP, Co-Go, AFH, PFH, and FHI. It was concluded that the divergence in the facial lower third of the patients did not increase, suggesting that the combined Extraoral Appliance with the line of force application directed to the resistance center of the maxilla was effective in treating Angle Class II malocclusion in hyperdivergent subjects.
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2009Co-Authors: Ivana Uglik Garbui(a, Paulo Roberto, Darcy Flávio Nouer(c, Maria Beatriz, João Sarmento, Ivana Uglik GarbuiAbstract:Cephalometric assessment of vertical control in the treatment of class II malocclusion with a combined maxillary splint Abstract: Vertical control is one of the primary objectives sought by or-thodontists when treating malocclusions in hyperdivergent individuals. This investigation aimed at assessing vertical control, by cephalometric measurements, during the treatment of Angle Class II Division 1 maloc-clusion. Thirty cases, selected from the files of the São Leopoldo Man-dic Dental Research Center, Brazil, of subjects with Angle Class II Divi-sion 1 malocclusion and facial hyperdivergence, were used in this study. The patients were treated using a combined Extraoral Appliance during a mean treatment time of 1.1 years. Pre- and posttreatment cephalomet-ric measurements were compared to assess vertical control. The results were submitted to ANOVA (p = 5%). The ANOVA test revealed no sta-tistically significant difference between the pretreatment and posttreat-ment values of OP (Occlusal plane angle) and SN.MP. While there was a decrease in Y-axis, FMA, and PP.MP, there was an increase in SN.PP, Co-Go, AFH, PFH, and FHI. It was concluded that the divergence in the facial lower third of the patients did not increase, suggesting that the combined Extraoral Appliance with the line of force application directed to the resistance center of the maxilla was effective in treating Angle Class II malocclusion in hyperdivergent subjects
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Noncompliance therapy: Veltri Appliance.
World journal of orthodontics, 2009Co-Authors: Kemal Doğan, Ğüvenç Başaran, Nihal Hamamci, Orhan HamamciAbstract:AIM To achieve intraoral molar distalization without any Extraoral Appliance or patient cooperation. METHODS The intraoral distalization technique was performed on a female 12 years 8 months of age with cooperation deficiency, and the positive results are presented. The patient initially accepted the headgear planned at the beginning of treatment, but she did not wear it long enough. We therefore abandoned the use of Extraoral Appliances and employed intraoral distalization instead. We preferred to use a Nance button Veltri Appliance we could create in our clinic. Once the patient had accepted our new treatment plan, we completed the distalization process in about 2 months. After a 2-month retention period, we completed treatment with a fixed Roth edgewise Appliance and maximum anchorage in the maxilla for approximately 18 months. RESULTS Following treatment, a Class II Division I dental relationship became a Class I relationship in both the canine and molar regions, and a functional occlusal relationship and esthetic facial appearance were obtained. CONCLUSION This Appliance can be used when patient cooperation is compromised.
