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1.
West China Journal of Stomatology ; (6): 232-236, 2023.
Article in English | WPRIM | ID: wpr-981117

ABSTRACT

Dens invaginatus is a rare developmental anomaly of the teeth that is caused by the infolding of enamel organs or the penetration of their proliferations into dental papillae before calcification has occurred. The presence of double dens invaginatus is extremely rare. This paper describes the use of cone beam computed tomography in the evaluation of a maxillary lateral incisor with double dens invaginatus and periapical periodontitis. The tooth was treated through microscopic root canal therapy. The tooth was free of clinical symptoms, and the periradicular lesion narrowed during the follow-up period of 1 year.


Subject(s)
Humans , Dental Pulp Cavity/abnormalities , Dens in Dente/pathology , Incisor/pathology , Root Canal Therapy , Periapical Periodontitis/pathology
2.
J. oral res. (Impresa) ; 8(3): 254-262, jul. 31, 2019. ilus, tab
Article in English | LILACS | ID: biblio-1145344

ABSTRACT

To identify the prevalence and diagnostic criteria of Molar-Incisor Hipomineralization (MIH) in the scientific literature. Materials and Methods: This is a bibliographical research conducted through the analysis of indexed articles until October 2017 in the PubMed, Web of Science and Scopus databases. The Medical Subject Headings (MESH) used were "Dental Enamel Hypoplasia" and "Molar Incisor Hypomineralization". The analysis of articles was carried out by two reviewers, who collected information independently. The following information was collected: author, year of publication, place of work (continent and country), sample calculation, sample number, age of participants, type of study, prevalence of molar-incisor hypomineralization and criteria used for diagnosis. Data were tabulated using Microsoft Excel for Windows and presented using descriptive statistics. Results: A total of 484 articles were found and 57 were included in the study. Most of the studies were conducted in Europe (35%), and 31.6% of the studies mentioned using a probability sampling. The number of study participants ranged from 99 for a study in Brazil to 3,591 in Kenya. The most frequent age was 8 years, while the predominant type of study was cross-sectional (91.2%). The prevalence varied from 0.4% to 37.3% and most studies (73.6%) employed the European Academy of Pediatric Dentistry criteria for the diagnosis of MIH. Conclusion: There is great variability in prevalence in different countries, probably due to the use of different diagnostic criteria being used, and due to different age groups and geographical variation.


Objetivo: Identificar la prevalencia y los criterios diagnósticos de la hipomineralización de incisivos molares (HIM) en la literatura científica. Materiales y métodos: Investigación bibliográfica realizada a través del análisis de artículos indexados hasta octubre de 2017 en las bases de datos PubMed, Web of Science y Scopus. Los Medical Subject Headings (MESH) utilizados fueron "Dental Enamel Hypoplasia" y "Molar Incisor Hypomineralization". El análisis de los artículos fue llevado a cabo por dos revisores, quienes recolectaron información de manera independiente. Se recopiló la siguiente información: autor, año de publicación, lugar de trabajo (continente y país), cálculo y número de muestra, edad de los participantes, tipo de estudio, prevalencia de hipomineralización molar-incisiva y criterios utilizados para el diagnóstico. Los datos se tabularon con Microsoft Excel para Windows y se presentaron con estadísticas descriptivas. Resultados: Se encontraron un total de 484 artículos y 57 se incluyeron en el estudio. La mayoría de los estudios se llevaron a cabo en Europa (35%), y el 31,6% de los estudios mencionados utilizaron una muestra probabilística. El número de participantes en el estudio varió de 99 en un estudio en Brasil a 3.591 en un estudio desde Kenia. La edad más frecuente fue de 8 años, mientras que el tipo de estudio predominante fue transversal (91,2%). La prevalencia varió de 0,4% a 37,3% y la mayoría de los estudios (73,6%) emplearon los criterios de la Academia Europea de Odontología Pediátrica para el diagnóstico de HIM. Conclusión: Existe una gran variabilidad en la prevalencia de HIM en diferentes Países, probablemente debido al uso de diferentes criterios de diagnóstico, al utilizar diferentes grupos de etarios y a la variación geográfica.


Subject(s)
Humans , Dental Enamel Hypoplasia , Incisor/pathology , Molar/pathology , Prevalence , Databases, Bibliographic
3.
Ortodoncia ; 82(164-165): 10-14, jun. 2019. ilus
Article in Spanish | LILACS, BINACIS | ID: biblio-1024520

ABSTRACT

La ubicación en la arcada de un incisivo superior ectópico y con diagnóstico de dilaceración, sin duda, es un gran desafío. Ya sea por su alto compromiso estético, así como también, por las maniobras biomecánicas a aplicar. La alteración de forma y ubicación ectópica del incisivo central superior, puede estar dada por un desarrollo anormal de dicha pieza sin causa aparente en el mayor porcentaje de los casos; aunque por causas obstructivas, como la presencia de diferentes patologías: quistes, odontomas, dientes supernumerarios; así como también, en un porcentaje menor, por traumatismos en los dientes temporarios


Subject(s)
Child , Tooth Eruption, Ectopic , Tooth, Impacted , Incisor/pathology , Incisor/diagnostic imaging , Malocclusion, Angle Class II , Maxilla
4.
Int. j. morphol ; 37(2): 522-532, June 2019. graf
Article in English | LILACS | ID: biblio-1002254

ABSTRACT

Amelogenin is one of the enamel matrices secreted by ameloblasts. A mutation of the amelogenin gene can cause hereditary dental enamel defects known as amelogenesis imperfecta (AI). Since lysosome-associated membrane protein-1 (LAMP-1), -3 (LAMP-3), and 78kDa glucose-related protein (Grp78) were identified as binding proteins of amelogenin, several studies have suggested the involvement of these binding proteins with the cell kinetics of ameloblasts in normal or abnormal conditions. The purpose of this study is to investigate the distribution of these amelogenin binding proteins in the ameloblast cell differentiation of mice with a point mutation of the amelogenin gene (Amelx*). The incisors of Amelx* mice had a white opaque color and the tooth surface was observed to be rough under a scanning electron microscope. Among the sequential ameloblast cell differentiation in the Amelx* mice, the shape of ameloblasts at the transition stage was irregular in comparison to those in wild-type (WT) mice. Immunostaining of Grp78 revealed that the whole cytoplasm of the transition stage ameloblasts was immunopositive for Grp78 antibody, while only the distal part of cell was positive in the WT mice. Furthermore, in the Amelx* mice, the cytoplasm of the transition stage ameloblasts was immunopositive for LAMP-1 and LAMP-3. These results suggest that Amelx* may cause the abnormal distribution of amelogenin binding proteins in the cytoplasm of ameloblasts.


La amelogenina es una de las matrices de esmalte secretadas por los ameloblastos. Una mutación del gen de amelogenina puede causar defectos hereditarios del esmalte dental conocidos como amelogénesis imperfecta (AI). Dado que la proteína de membrana asociada a lisosoma-1 (LAMP-1), -3 (LAMP-3) y la proteína relacionada con la glucosa de 78 kDa (Grp78) se identificaron como proteína de unión a amelogenina, varios estudios han sugerido la participación de estas proteínas con la cinética celular de los ameloblastos en condiciones normales o anormales. El objetivo del estudio fue investigar la distribución de LAMP-1, LAM-3 y Grp78 durante la diferenciación celular de ameloblastos de ratones con una mutación puntual del gen de amelogenina (Amelx*). Los incisivos de los ratones Amelx* presentaron un color blanco opaco y se observó en microscopio electrónico de barrido que la superficie del diente era áspera. La diferenciación celular secuencial y la forma de los ameloblastos en la etapa de transición en los ratones Amelx* fue irregular en comparación con los ratones silvestres (RS). La inmunotinción de Grp78 reveló que todo el citoplasma de los ameloblastos en etapa de transición fue inmunopositivo para el anticuerpo Grp78, mientras que solo la parte distal de la célula fue positiva en los ratones RS. Además, en ratones Amelx*, el citoplasma de los ameloblastos en etapa de transición fue inmunopositivo para LAMP-1 y LAMP-3. Estos resultados sugieren que Amelx* puede causar distribución anormal de proteínas de unión a amelogenina en el citoplasma de los ameloblastos.


Subject(s)
Animals , Mice , Lysosome-Associated Membrane Glycoproteins/metabolism , Amelogenin/metabolism , Amelogenesis Imperfecta , Heat-Shock Proteins/metabolism , Microscopy, Electron, Scanning , Fluorescent Antibody Technique , Dental Enamel/pathology , Lysosomal-Associated Membrane Protein 1/metabolism , Amelogenin/genetics , Lysosomal-Associated Membrane Protein 3/metabolism , Incisor/pathology
5.
Braz. oral res. (Online) ; 33: e048, 2019. tab
Article in English | LILACS | ID: biblio-1019601

ABSTRACT

Abstract This cross-sectional study aimed to assess the prevalence of molar incisor hypomineralization (MIH) and its relationship with the number of primary teeth with developmental defects of enamel (DDE). A representative population-based sample of 731 schoolchildren was randomly selected from the public school system in Curitiba, Brazil. Schoolchildren aged 8 years with fully erupted permanent first molars and incisors were eligible for the study. MIH and DDE were classified by four calibrated examiners (kappa > 0.75) according to EAPD criteria and to the FDI-modified DDE index. Clinical data were collected in a school environment. Socioeconomic information was collected through a self-administered semistructured questionnaire applied to the children's caregivers. Statistical analyses were carried out using Poisson multiple regression with robust variance (α = 0.05). MIH prevalence was 12.1% (95%CI: 10-15), and opacities were the most prevalent defect. Socioeconomic factors were not associated with MIH. Children with demarcated opacity in primary teeth presented a higher prevalence of MIH than those without DDE in primary teeth. In the multiple analysis, the increase of one primary tooth affected by demarcated opacity increased the prevalence of MIH by 33% (PR = 1.33, 95%CI: 1.15-1.53, p < 0.001). Asian children had a higher prevalence of MIH (PR = 2.91, 95%CI: 1.08-8.09 p = 0.035) than did Caucasian children.Conclusion: Based on these findings, the prevalence of MIH in Curitiba was 12.1%. Demarcated opacity in primary teeth could be considered a predictor of MIH.


Subject(s)
Humans , Male , Female , Child , Dental Enamel Hypoplasia/epidemiology , Socioeconomic Factors , Tooth, Deciduous , Severity of Illness Index , Brazil/epidemiology , Prevalence , Cross-Sectional Studies , Regression Analysis , Risk Factors , Dental Enamel Hypoplasia/pathology , Self Report , Incisor/pathology , Molar/pathology
6.
Dental press j. orthod. (Impr.) ; 23(2): 75-86, Mar.-Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-953020

ABSTRACT

ABSTRACT The purpose of this paper was to emphasize the importance of the orthodontic setup in treatment planning for skeletal Class III malocclusion correction in an adult patient with moderate lower anterior crowding and anterior crossbite associated with two supernumerary lower incisors.


RESUMO O objetivo desse artigo é enfatizar a importância do setup ortodôntico no planejamento do tratamento da má oclusão de Classe III esquelética de uma paciente adulta com apinhamento anteroinferior moderado e mordida cruzada anterior associada à presença de dois incisivos inferiores supranumerários.


Subject(s)
Humans , Female , Young Adult , Orthodontics, Corrective/methods , Patient Care Planning , Malocclusion, Angle Class III/surgery , Malocclusion, Angle Class III/therapy , Orthodontic Wires , Orthodontics, Corrective/instrumentation , Tooth Extraction , Tooth Movement Techniques/instrumentation , Image Processing, Computer-Assisted/methods , Radiography, Dental , Cephalometry/methods , Treatment Outcome , Orthodontic Brackets , Orthodontic Appliance Design , Photography, Dental , Dental Arch/surgery , Dental Arch/pathology , Esthetics, Dental , Incisor/pathology , Malocclusion/therapy , Malocclusion/diagnostic imaging , Malocclusion, Angle Class III/diagnostic imaging
7.
Dental press j. orthod. (Impr.) ; 23(2): 30-36, Mar.-Apr. 2018. graf
Article in English | LILACS | ID: biblio-953017

ABSTRACT

ABSTRACT The teeth become very close to each other when they are crowded, but their structures remain individualized and, in this situation, the role of the epithelial rests of Malassez is fundamental to release the EGF. The concept of tensegrity is fundamental to understand the responses of tissues submitted to forces in body movements, including teeth and their stability in this process. The factors of tooth position stability in the arch - or dental tensegrity - should be considered when one plans and perform an orthodontic treatment. The direct causes of the mandibular anterior crowding are decisive to decide about the correct retainer indication: Should they be applied and indicated throughout life? Should they really be permanently used for lifetime? These aspects of the mandibular anterior crowding and their implication at the orthodontic practice will be discussed here to induct reflections and insights for new researches, as well as advances in knowledge and technology on this subject.


RESUMO Os dentes ficam muito próximos quando estão apinhados, mas suas estruturas permanecem individualizadas e, nessa situação, o papel dos restos epiteliais de Malassez é fundamental para liberar o EGF. A tensigridade é um conceito chave para compreender as respostas dos tecidos submetidos às forças nos movimentos corporais, incluindo os dentes e sua estabilidade nesse processo. Os fatores da estabilidade de posição de um dente na arcada dentária — ou tensigridade dentária — devem ser considerados quando se planeja e finaliza um caso na prática clínica ortodôntica. As causas diretas do apinhamento dentário anteroinferior são determinantes para se refletir se a contenção deve ser mesmo indicada e aplicada por toda a vida e se, necessariamente, deve ser usada de forma permanente. Esses aspectos do apinhamento dentário anteroinferior e suas implicações na prática clínica serão aqui abordados para induzir reflexões e insights de novas pesquisas, bem como avanços no conhecimento e tecnologia sobre esse assunto.


Subject(s)
Humans , Incisor/pathology , Malocclusion/etiology , Malocclusion/pathology , Mandible/pathology , Tooth/pathology , Tooth Eruption , Tooth Movement Techniques , Alveolar Bone Loss , Orthodontic Retainers , Dental Arch/anatomy & histology , Dental Arch/pathology , Incisor/anatomy & histology , Mandible/anatomy & histology
8.
Dental press j. orthod. (Impr.) ; 22(6): 28-34, Nov.-Dec. 2017. graf
Article in English | LILACS | ID: biblio-891108

ABSTRACT

ABSTRACT The relationship between maxillary lateral incisor anodontia and the palatal displacement of unerupted maxillary canines cannot be considered as a multiple tooth abnormality with defined genetic etiology in order to be regarded as a "syndrome". Neither were the involved genes identified and located in the human genome, nor was it presumed on which chromosome the responsible gene would be located. The palatal maxillary canine displacement in cases of partial anodontia of the maxillary lateral incisor is potentially associated with environmental changes caused by its absence in its place of formation and eruption, which would characterize an epigenetic etiology. The lack of the maxillary lateral incisor in the canine region means removing one of the reference guides for the eruptive trajectory of the maxillary canine, which would therefore, not erupt and /or impact on the palate. Consequently, and in sequence, it would lead to malocclusion, maxillary atresia, transposition, prolonged retention of the deciduous canine and resorption in the neighboring teeth. Thus, we can say that we are dealing with a set of anomalies and multiple sequential changes known as sequential development anomalies or, simply, sequence. Once the epigenetics and sequential condition is accepted for this clinical picture, it could be called "Maxillary Lateral Incisor Partial Anodontia Sequence."


RESUMO A relação entre a anodontia parcial do incisivo lateral e o deslocamento palatino do canino superior não irrompido não pode ser considerada uma anomalia dentária múltipla com etiopatogenia genética definida, a ponto de ser considerada como uma "síndrome". Os genes envolvidos sequer foram identificados e localizados no genoma humano, e nem mesmo presumiu-se em qual cromossomo se localizaria o gene responsável. O deslocamento palatino do canino superior em casos de anodontia parcial do incisivo lateral superior está potencialmente associado às mudanças ambientais provocadas pela sua ausência no local de formação e erupção, o que caracterizaria uma etiologia epigenética para essa associação. A falta do incisivo lateral superior na região canina implica em tirar um dos guias referenciais da trajetória eruptiva do canino superior, que ficaria, assim, não irrompido e/ou impactado no palato. Como consequência, e em sequência, promove-se uma má oclusão, atresia maxilar, transposição, retenção prolongada do canino decíduo e reabsorções nos dentes vizinhos. Dessa forma, pode-se afirmar que estamos frente a um conjunto de anomalias e alterações múltiplas sequenciais conhecido como anomalias de desenvolvimento sequencial ou, simplesmente, sequência. Uma vez aceita a condição epigenética e sequencial para esse quadro clínico, ele poderia ser chamado de "Sequência da Anodontia Parcial do Incisivo Lateral Superior".


Subject(s)
Humans , Adolescent , Incisor/pathology , Maxilla/pathology , Anodontia/complications , Anodontia/genetics , Anodontia/pathology , Palate , Tooth Abnormalities , Tooth Eruption , Tooth, Impacted , Tooth, Unerupted/etiology , Tooth, Unerupted/pathology , Radiography, Panoramic , Malocclusion/complications , Maxilla/diagnostic imaging , Anodontia/diagnostic imaging
9.
Int. j. odontostomatol. (Print) ; 11(3): 327-332, set. 2017. tab
Article in English | LILACS | ID: biblio-893269

ABSTRACT

ABSTRACT: This paper main objective is to estimate the level of association between lower anterior crowding and the presence of lower third molars on study models and panoramic dental radiographs of patients treated by the Orthodontics Postgraduate Students at the Dentistry Faculty at the University of Cartagena (Cartagena de Indias, Colombia) and also other dental and radiographs care centers in Cartagena de Indias. It was made using a cross-sectional study at the Dentistry Faculty at the University of Cartagena and others dental care centers in the city. There were 366 study models and panoramic dental radiographs selected by strict inclusion/exclusion criteria for patients. An instrument that includes age, gender, presence or absence of third molars, position of third molars according to Winter's classification, stage of formation of the third molars according to Nolla's classification, and crowding magnitude according to Harfin's classification was used. Data were analyzed based on frequency distributions and proportions; inferential analysis was performed through proportional odds model using the software package IBM SPSS Statistics v23. It was found that the patients with Nolla 6 from the right side are more likely to have mild-moderate crowding magnitude than patients with Nolla 10 on that same side. In conclusion, this research provides as main result the implication of the eruption of the lower third molars and particularly those erupting in mesioangular and horizontal positions in the anterior crowding (AA).


RESUMEN: El objetivo de este trabajo fue estimar el nivel de asociación entre el apiñamiento dentario anteroinferior y la presencia de terceros molares inferiores en modelos de estudio y radiografías panorámicas de los pacientes atendidos por estudiantes del posgrado de ortodoncia de laFacultad de Odontología de Cartagena de Indias, Colombia y también otros centros dentales y de radiografías en Cartagena de Indias. Se realizó un estudio transversal en la Facultad de Odontología de la Universidad de Cartagena y otros centros de atención odontológica de la ciudad. Se utilizaron 366 modelos de estudio y radiografías dentales panorámicas seleccionadas por estrictos criterios de inclusión / exclusión para los pacientes. Se utilizó un instrumento que incluía edad, sexo, presencia o ausencia de terceros molares, posición de los terceros molares de acuerdo con la clasificación de Winter, etapa de formación de los terceros molares de acuerdo con la clasificación de Nolla y magnitud de apiñamiento según la clasificación de Harfin. Los datos se analizaron en base a las distribuciones y proporciones de frecuencia; el análisis inferencial se realizó a través del modelo de probabilidades proporcional utilizando el software IBM SPSS Statistics v23. Se encontró que los pacientes con Nolla 6 en el lado derecho son más propensos a tener una magnitud de apiñamiento de leve a moderada en comparación a los pacientes con Nolla 10 en ese mismo lado. En conclusión, esta investigación proporciona como resultado principal la implicación de la erupción de los terceros molares inferiores y particularmente aquellos que erupcionan en posiciones mesioangulares y horizontales en el apiñamiento dentario anterior (AA).


Subject(s)
Humans , Tooth Eruption , Tooth, Impacted/complications , Incisor/pathology , Malocclusion/etiology , Molar, Third/pathology , Tooth, Impacted/pathology , Tooth, Impacted/epidemiology , Radiography, Panoramic , Incidence , Cross-Sectional Studies , Colombia/epidemiology , Dental Arch/pathology , Malocclusion/pathology , Malocclusion/epidemiology
10.
Int. j. morphol ; 34(4): 1502-1505, Dec. 2016. ilus
Article in Spanish | LILACS | ID: biblio-840915

ABSTRACT

El objetivo de esta investigación es determinar la inclinación de incisivos maxilares en sujetos con maloclusión de clase III. Se incluyeron 35 sujetos que presentaran deformidad facial de clase III (DF-III) para analizar la tomografía computarizada de haz cónico; las mediciones se realizaron para los cuatro incisivos maxilares identificando el plano palatino considerado entre espina nasal anterior y posterior y el eje axial dentario obtenido por la unión entre punto coronal y punto apical; los resultados mostraron angulaciones de 111,6 a 113,7 para los incisivos, lo cual permite obtener valores cercanos a la normalidad de angulación dentaria. Se concluye que los sujetos seleccionados presentan una angulación dentaria adecuada para la realización de procedimientos de cirugía primero.


The objective of this research was to determine the inclination of maxillary incisors in subjects with class III malocclusion. Were included 35 subjects with Class III facial deformity (DF-III) to analyze cone beam computed tomography; measurements were realized in the four maxillary incisors identifying the palatal plane considered between anterior and posterior nasal spine and dental axial axis from the union between coronal point and apical point; The results showed angulations from 111.6 to 113.7 for the incisors, which allows estimation of values close to normal dental angulation. It is concluded that the selected subjects present adequate dental angulation to perform surgery first.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Incisor/diagnostic imaging , Incisor/pathology , Malocclusion, Angle Class III/diagnostic imaging , Malocclusion, Angle Class III/pathology , Cone-Beam Computed Tomography
11.
Dental press j. orthod. (Impr.) ; 20(3): 64-68, May-Jun/2015. tab, graf
Article in English | LILACS | ID: lil-751410

ABSTRACT

OBJECTIVE: The aim of this longitudinal study, comprising young adults without orthodontic treatment, was to assess spontaneous changes in lower dental arch alignment and dimensions. METHODS: Twenty pairs of dental casts of the lower arch, obtained at different time intervals, were compared. Dental casts obtained at T1 (mean age = 20.25) and T2 (mean age = 31.2) were compared by means of paired t-test (p < 0.05). RESULTS: There was significant reduction in arch dimensions: 0.43 mm for intercanine (p = 0.0089) and intermolar (p = 0.022) widths, and 1.28 mm for diagonal arch length (p < 0.001). There was a mild increase of approximately 1 mm in the irregularity index used to assess anterior alignment (p < 0.001). However, regression analysis showed that changes in the irregularity index revealed no statistically significant association with changes in the dental arch dimensions (p > 0.05). Furthermore, incisors irregularity at T2 could not be predicted due to the severity of this variable at T1 (p = 0.5051). CONCLUSION: Findings suggest that post-growth maturation of the lower dental arch leads to a reduction of dental arch dimensions as well as to a mild, yet significant, increase in dental crowding, even in individuals without orthodontic treatment. Furthermore, dental alignment in the third decade of life cannot be predicted based on the severity of dental crowding at the end of the second decade of life. .


OBJETIVO: o objetivo deste trabalho foi avaliar, por meio de um estudo longitudinal em adultos jovens, sem tratamento ortodôntico, as alterações espontâneas do alinhamento da arcada dentária inferior e de suas dimensões. MÉTODOS: vinte pares de modelos de gesso da arcada inferior foram obtidos em dois tempos. No primeiro exame (T1), os indivíduos tinham, em média, 20,25 anos; enquanto no segundo exame (T2) a média de idade foi de 31,2 anos. Comparações entre os tempos T1 e T2 foram realizadas usando o teste t pareado (p < 0,05). RESULTADOS: houve uma redução significativa nas dimensões da arcada - de 0,43mm nas larguras intercaninos (p = 0,0089) e intermolares (p = 0,022) e de 1,28mm para o comprimento diagonal da arcada (p < 0,001). Foi observado um aumento suave, de aproximadamente 1mm, no índice de irregularidade anterior (p < 0,001). Entretanto, a análise de regressão mostrou que as mudanças no índice de irregularidade não revelaram uma associação estatisticamente significativa com as mudanças na arcada dentária (p > 0,05). Além disso, o índice de irregularidade dos incisivos em T2 não pode ser estimado, devido à severidade dessa variável em T1 (p = 0,5051). CONCLUSÃO: esses achados sugerem que a maturação da arcada dentária inferior, pós-crescimento, leva a uma redução das dimensões da arcada e um aumento suave, porém significativo, do apinhamento dentário, mesmo em indivíduos sem tratamento ortodôntico. Assim, o alinhamento dentário na terceira década de vida não pode ser previsto tendo como base a severidade do apinhamento dentário ao final da segunda década de vida. .


Subject(s)
Humans , Male , Female , Adolescent , Adult , Young Adult , Tooth/pathology , Dental Arch/pathology , Mandible/pathology , Cephalometry/methods , Longitudinal Studies , Cuspid/pathology , Incisor/pathology , Molar/pathology , Odontometry/methods
12.
Rev. cuba. estomatol ; 52(1): 0-0, ene.-mar. 2015. ilus
Article in Spanish | LILACS | ID: lil-749612

ABSTRACT

Introducción: en la práctica estomatológica, es frecuente encontrar situaciones clínicas en las que, en una somera exploración, no es fácil determinar si se trata de una afección endodóntica, periodontal o una combinación de ambas, por lo que la clasificación de estas lesiones se realiza en relación con la fuente primaria de origen, que puede ser pulpar o periapical, y a partir de estas estructuras afectar al diente en su conjunto, extendiendo el proceso infeccioso, incluso hasta las crestas óseas; no existe marcada diferencia en cuanto a grupos de edades y sexo. Objetivos: el objetivo de este trabajo es presentar el caso clínico de lesión endoperiodontal combinada, secundaria a traumatismo incisal y la importancia de la radiografía para su diagnóstico. Datos del caso: paciente de sexo femenino con antecedentes de salud anterior que acude por presentar dolor y aumento de volumen de color rojo intenso en región de incisivos centrales superiores, radiográficamente aparece una lesión que involucra los tercios apicales de incisivos central y lateral, presentando vitalidad en este último. Fue tratada por el servicio de urgencia realizándosele el acceso cameral. Principales comentarios: Fue necesario realizar en una variedad de exámenes tanto clínicos como pruebas diagnósticas para la diferenciación entre las lesiones endodónticas y periodontales verdaderas. El diagnóstico definitivo solo pudo establecerse sobre la base de los hallazgos clínico-radiográficos. Se realizó un tratamiento combinado endodóntico y periodontal con un buen pronóstico(AU)


Introduction: in dental practice, it is common to find clinical situations in which, in a cursory examination, it is not clear whether this is an endodontic, periodontal or a combination of both affections, so that the classification of these lesions is performed in relation to the primary source of origin which may be pulp or periapical and from these structures affect the tooth as a whole; spreading the infection process, even the bony ridges. There are no marked difference in age groups and sex. Objectives: the aim of this paper is to present a case of combined endoperiodontal injury secondary to incisal trauma and the importance of radiography for diagnosis. Facts of the case: female patient with a history of previous health comes having pain and enlargement of deep red upper central incisor region, radiographically injury involving the apical thirds of central and lateral incisors appear, showing vitality in this one. It was treated by the emergency service by cameral access. Main comments: It was necessary in a variety of both clinical examination and diagnostic tests for differentiating between true endodontic and periodontal lesions. The definitive diagnosis could only be established on the basis of clinical and radiographic findings. Combined periodontal and endodontic treatment was performed with a good prognosis(AU)


Subject(s)
Humans , Female , Adult , Periodontal Diseases/diagnostic imaging , Pulpitis/diagnosis , Combined Modality Therapy/methods , Incisor/pathology , Periodontal Diseases/therapy , Pulpitis/therapy , Case Reports
13.
Dental press j. orthod. (Impr.) ; 19(6): 99-104, Nov-Dec/2014. tab, graf
Article in English | LILACS | ID: lil-732427

ABSTRACT

INTRODUCTION: Although lip bumpers (LBs) provide significant clinical gain of mandibular arch perimeter in mixed-dentition patients, orthodontists are reluctant to use them due to the possibility of permanent second molar eruptive disturbances. OBJECTIVE: The present study was conducted to assess second molar impaction associated with the use of LBs, and to investigate how they can be solved. MATERIAL AND METHODS: Lateral and panoramic radiographs of 67 patients (34 females and 33 males) were assessed prior (T1) and post-LB treatment (T2). LB therapy lasted for approximately 1.8 ± 0.9 years. Concomitant rapid palatal expansion (RPE) was performed in the maxilla at LB treatment onset. Impaction of mandibular second molars was assessed by means of panoramic radiographs in relation to the position of first mandibular molars. Horizontal and vertical movements of first and second molars were assessed cephalometrically on lateral cephalometric radiographs based on mandibular superimpositions. RESULTS: Eight (11.9%) patients had impacted second molars at the end of LB therapy. Two patients required surgical correction, whereas five required spacers and one patient was self-corrected. Mandibular first molar tip and apex migrated forward 1.3 mm and 2.3 mm, respectively. Second molar tip showed no statistically significant horizontal movement. CONCLUSION: Although LB therapy increased the risk of second molar impaction, impactions were, in most instances, easily solved. .


INTRODUÇÃO: embora placas labioativas (PLAs) promovam um ganho clínico significativo no perímetro da arcada inferior em pacientes com dentição mista, ortodontistas são relutantes em usá-las devido a possibilidade de problemas eruptivos dos segundos molares. OBJETIVO: o presente estudo avaliou a impacção dos segundos molares associada ao uso das PLAs e como a impacção pôde ser resolvida. MÉTODOS: radiografias cefalométricas lateral e panorâmica de 67 pacientes (34 do sexo feminino e 33 do masculino) foram avaliadas antes (T1) e após (T2) o tratamento com PLAs, que durou aproximadamente 1,8 ± 0,9 anos. Expansão rápida do palato (ERP) foi usada na maxila no início do uso da PLA. Usando as radiografias panorâmicas, a impacção dos segundos molares inferiores foi avaliada relativamente à posição dos primeiros molares mandibulares. Os movimentos horizontais e verticais dos primeiros e segundos molares inferiores foram avaliados com base em sobreposições de estruturas estáveis da arcada inferior por meio das radiografias laterais. RESULTADOS: oito (11,9%) pacientes apresentaram impacção dos segundos molares mandibulares ao final do tratamento com PLA; dois pacientes tiveram de recorrer à intervenção cirúrgica para a correção da impacção, cinco tiveram a correção da impacção usando apenas espaçadores e um apresentou autocorreção da impacção. A coroa e o ápice do primeiro molar inferior migraram 1.3mm e 2,.3mm, respectivamente, para mesial. O segundo molar não mostrou movimento horizontal significativo. ...


Subject(s)
Child , Female , Humans , Male , Molar/pathology , Orthodontic Appliance Design , Orthodontic Appliances/adverse effects , Tooth, Impacted/etiology , Cephalometry/methods , Follow-Up Studies , Incisor/pathology , Longitudinal Studies , Mandible/pathology , Palatal Expansion Technique/instrumentation , Radiography, Panoramic , Retrospective Studies , Tooth Eruption/physiology , Tooth Movement Techniques/instrumentation
14.
J. appl. oral sci ; 22(5): 409-415, Sep-Oct/2014. tab, graf
Article in English | LILACS, BBO | ID: lil-729853

ABSTRACT

Anterior spaces may interfere with smile attractiveness and compromise dentofacial harmony. They are among the most frequent reasons why patients seek orthodontic treatment. However, midline diastema is commonly cited as a malocclusion with high relapse incidence by orthodontists. Objectives: This study aimed to evaluate the stability of maxillary interincisor diastemas closure and the association of their relapse and interincisor width, overjet, overbite and root parallelism. Material and Methods: Sample comprised 30 patients with at least a pretreatment midline diastema of 0.5 mm or greater after eruption of the maxillary permanent canines. Dental casts and panoramic radiographs were taken at pretreatment, posttreatment and postretention. Results: Before treatment, midline diastema width was 1.52 mm (SD=0.88) and right and left lateral diastema widths were 0.55 mm (SD=0.56) and 0.57 mm (SD=0.53), respectively. According to repeated measures analysis of variance, only midline diastema demonstrated significant relapse. In the overall sample the average relapse of midline diastema was 0.49 mm (SD=0.66), whilst the unstable patients showed a mean space reopening of 0.78 mm (SD=0.66). Diastema closure in the area between central and lateral incisors showed great stability. Multivariate correlation tests showed that only initial diastema width (β=0.60) and relapse of overjet (β=0.39) presented association with relapse of midline diastema. Conclusions: Midline diastema relapse was statistically significant and occurred in 60% of the sample, while lateral diastemas closure remained stable after treatment. Only initial diastema width and overjet relapse showed association with relapse of midline diastema. There was no association between relapse of interincisor diastema and root parallelism. .


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Young Adult , Diastema/therapy , Incisor/pathology , Maxilla/pathology , Orthodontic Space Closure/methods , Analysis of Variance , Incisor , Maxilla , Odontometry , Overbite/therapy , Radiography, Panoramic , Recurrence , Reference Values , Regression Analysis , Time Factors , Treatment Outcome
15.
Dental press j. orthod. (Impr.) ; 19(4): 38-49, Jul-Aug/2014. tab
Article in English | LILACS | ID: lil-725429

ABSTRACT

INTRODUCTION: The aim of this retrospective study was to compare the occlusal outcomes, duration and efficiency of Class I malocclusion treatment carried out with and without premolar extractions in patients with different degrees of initial malocclusion severity. METHODS: Complete records of 111 patients were obtained and divided into two groups: Group 1 consisted of 65 patients at an initial mean age of 13.82 years old treated with four premolar extractions; whereas Group 2 consisted of 46 patients at an initial mean age of 14.01 years old treated without extractions. Two subgroups were obtained from each group (1A, 1B, 2A and 2B) with different degrees of malocclusion severity according to the initial values of PAR index. Compatibility was assessed using chi-square and t-tests. The subgroups were compared by means of Analysis of Variance (ANOVA).The variables that might be related to treatment duration and efficiency were assessed using the multiple linear regression analysis. RESULTS: Initial malocclusion severity was positively related to the amount of occlusal correction and consequently to a higher efficiency index. Moreover, extraction protocol showed a positive relationship with treatment duration and a negative relationship with treatment efficiency. CONCLUSION: Extraction and non-extraction protocols for correction of Class I malocclusion provide similar satisfactory results; however, the extraction protocol increases the overall treatment duration. Orthodontic treatment is more efficient in cases with high initial malocclusion severity treated with a non-extraction protocol. .


INTRODUÇÃO: o objetivo desse estudo retrospectivo foi comparar os resultados oclusais, o tempo e o grau de eficiência do tratamento da má oclusão de Classe I realizado com e sem extrações em pacientes que apresentavam diferentes tipos de severidade oclusal inicial. MÉTODOS: a amostra foi composta pelas documentações de 111 pacientes, divididas em dois grupos: Grupo 1 (n = 65), com idade inicial média de 13,82 anos, tratados com extrações; Grupo 2 (n = 46), com idade inicial média de 14,01 anos, tratados sem extrações. De cada grupo, foram obtidos dois subgrupos (1A, 1B, 2A e 2B) com severidades oclusais diferentes (alta e baixa), de acordo aos valores iniciais do índice PAR. A avaliação da compatibilidade foi realizada por meio do teste qui-quadrado e do teste t. Os subgrupos foram comparados por meio da análise de variância (ANOVA) e foi realizada a análise de regressão linear múltipla para avaliação das variáveis que poderiam estar relacionadas com o tempo e com a eficiência do tratamento. RESULTADOS: a severidade oclusal inicial esteve diretamente relacionada à quantidade de sua correção e, consequentemente, à obtenção de um maior índice de eficiência; por outro lado, a utilização do protocolo de extrações de pré-molares mostrou uma relação direta com o tempo de tratamento e inversa com a eficiência do tratamento. CONCLUSÃO: no tratamento da má oclusão de Classe I, podem ser obtidos resultados oclusais satisfatórios com uma maior quantidade de correção das alterações oclusais nos casos com maior severidade inicial, e um maior tempo de tratamento quando o tratamento envolve extrações dentárias. .


Subject(s)
Adolescent , Child , Female , Humans , Male , Young Adult , Bicuspid/surgery , Malocclusion, Angle Class I/classification , Tooth Extraction/methods , Follow-Up Studies , Index of Orthodontic Treatment Need , Incisor/pathology , Malocclusion, Angle Class I/therapy , Overbite/classification , Overbite/therapy , Patient Acuity , Retrospective Studies , Time Factors , Treatment Outcome , Tooth Movement Techniques/instrumentation , Tooth Movement Techniques/methods
16.
Dental press j. orthod. (Impr.) ; 19(3): 44-51, May-Jun/2014. tab, graf
Article in English | LILACS | ID: lil-723152

ABSTRACT

OBJECTIVE: The aim of this study was to cephalometrically assess the skeletal and dentoalveolar effects of Class II malocclusion treatment performed with the Jones Jig appliance followed by fixed appliances. METHODS: The sample comprised 25 patients with Class II malocclusion treated with the Jones Jig appliance followed by fixed appliances, at a mean initial age of 12.90 years old. The mean time of the entire orthodontic treatment was 3.89 years. The distalization phase lasted for 0.85 years, after which the fixed appliance was used for 3.04 years. Cephalograms were used at initial (T1), post-distalization (T2) and final phases of treatment (T3). For intragroup comparison of the three phases evaluated, dependent ANOVA and Tukey tests were used. RESULTS: Jones Jig appliance did not interfere in the maxillary and mandibular component and did not change maxillomandibular relationship. Jones Jig appliance promoted distalization of first molars with anchorage loss, mesialization and significant extrusion of first and second premolars, as well as a significant increase in anterior face height at the end of treatment. The majority of adverse effects that occur during intraoral distalization are subsequently corrected during corrective mechanics. Buccal inclination and protrusion of mandibular incisors were identified. By the end of treatment, correction of overjet and overbite was observed. CONCLUSIONS: Jones Jig appliance promoted distalization of first molars with anchorage loss represented by significant mesial movement and extrusion of first and second premolars, in addition to a significant increase in anterior face height. .


OBJETIVO: a proposta desse estudo foi avaliar cefalometricamente os efeitos esqueléticos e dentoalveolares do tratamento da má oclusão de Classe II com o distalizador Jones jig, seguido do uso do aparelho fixo corretivo. MÉTODOS: a amostra constituiu de 25 pacientes com má oclusão de Classe II, tratados com o distalizador Jones Jig, seguido do uso de aparelho fixo corretivo, com média de idade inicial de 12,90 anos. O tempo médio de tratamento ortodôntico total foi de 3,89 anos. A fase de distalização durou 0,85 anos, e a fase de aparelho fixo pós-distalização foi de 3,04 anos. Foram utilizadas as telerradiografias nos tempos inicial (T1), pós-distalização (T2) e final do aparelho fixo (T3). Para comparação intragrupo nos três tempos avaliados, foram utilizados os testes ANOVA dependente e de Tukey. RESULTADOS: os resultados demonstraram que o Jones Jig não interferiu no componente maxilar e mandibular, e não promoveu alterações na relação maxilomandibular. O Jones Jig promoveu distalização dos primeiros molares, com perda de ancoragem, mesialização e extrusão significativa dos primeiros e segundos pré-molares, e aumento significativo da altura facial anteroinferior ao final do tratamento. A maioria dos efeitos adversos ocorridos na fase de distalização intrabucal são posteriormente corrigidos durante a mecânica corretiva. Verificou-se vestibularização e protrusão dos incisivos inferiores. Ao final do tratamento, foi observada a correção dos trespasses horizontal e vertical. CONCLUSÕES: o distalizador Jones Jig promoveu a distalização dos primeiros molares, com perda de ancoragem, representada pela mesialização e extrusão significativa dos primeiros e segundos pré-molares, e aumento significativo ...


Subject(s)
Adolescent , Child , Female , Humans , Male , Cephalometry/methods , Malocclusion, Angle Class II/therapy , Orthodontic Appliance Design , Tooth Movement Techniques/instrumentation , Bicuspid/pathology , Dental Alloys/chemistry , Extraoral Traction Appliances , Follow-Up Studies , Incisor/pathology , Mandible/pathology , Molar/pathology , Nickel/chemistry , Orthodontic Retainers , Orthodontic Wires , Orthodontic Anchorage Procedures/instrumentation , Overbite/therapy , Prospective Studies , Titanium/chemistry , Vertical Dimension
17.
Dental press j. orthod. (Impr.) ; 19(3): 127-138, May-Jun/2014. tab, graf
Article in English | LILACS | ID: lil-723156

ABSTRACT

Angle Class I malocclusion with bimaxillary protrusion is characterized by severe buccal tipping of incisors, which causes upper and lower lip protrusion. First premolars extraction is recommended to reduce facial convexity as a result of anterior teeth retraction, which keeps canines and first molars in key to occlusion. In order to yield orthodontic results that are compatible with ideal esthetic and cephalometric outcomes, the space closure phase needs to be carried out with overbite and incisors torque control. The majority of cases also requires maximum anchorage of posterior teeth. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO) as a requirement for the title of certified by the BBO.


A má oclusão de Classe I de Angle com biprotrusão é caracterizada pela inclinação acentuada dos incisivos para vestibular, o que provoca a protrusão dos lábios superior e inferior. As extrações dos primeiros pré-molares têm sido indicadas para reduzir a convexidade facial com a retração dos dentes anteriores, mantendo a relação de chave de oclusão dos caninos e dos primeiros molares. Para a obtenção de resultados compatíveis com as metas estéticas e cefalométricas idealizadas para o tratamento ortodôntico, é necessário que a fase de fechamento de espaços seja realizada com controle da sobremordida e do torque dos incisivos. Na maioria dos casos, também há necessidade de se proporcionar ancoragem máxima aos dentes posteriores. O presente caso clínico foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO) como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.


Subject(s)
Adult , Female , Humans , Bicuspid/surgery , Malocclusion, Angle Class I/therapy , Patient Care Planning , Tooth Extraction/methods , Cephalometry/methods , Incisor/pathology , Lip/pathology , Malocclusion, Angle Class I/pathology , Mandible/pathology , Maxilla/pathology , Nasal Bone/pathology , Orthodontic Anchorage Procedures/instrumentation , Orthodontic Anchorage Procedures/methods , Orthodontic Space Closure/methods , Overbite/therapy , Torque , Treatment Outcome , Tooth Movement Techniques/methods
18.
Dental press j. orthod. (Impr.) ; 19(2): 115-125, Mar-Apr/2014. tab, graf
Article in English | LILACS | ID: lil-714619

ABSTRACT

This article reports the orthodontic diagnosis and treatment planning carried out with a 14-year and 5-month-old female patient with esthetic and functional complaints. She presented an Angle Class I malocclusion, anterior crossbite and severe crowding in both maxillary and mandibular arches, in addition to a lightly concave straight facial profile. Orthodontic treatment did not require extraction. Crossbite was corrected by protrusion of upper teeth, which contributed to alignment and leveling of teeth, in addition to improving the patient's facial profile. The case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO) as a requirement for the BBO certification.


Esse artigo relata o diagnóstico, planejamento e execução do tratamento ortodôntico de uma paciente com 14 anos e 5 meses de idade, cuja queixa principal era estética e funcional. A paciente portava má oclusão de Classe I de Angle, mordida cruzada anterior e falta de espaço severo nas arcadas superior e inferior. O perfil facial era reto, com tendência a côncavo. O tratamento ortodôntico foi realizado sem necessidade de exodontias, com a correção da mordida cruzada por meio da projeção dos dentes superiores, o que auxiliou no alinhamento e nivelamento dentário, além de melhorar o perfil facial da paciente. Esse caso foi apresentado ao Board Brasileiro de Ortodontia e Ortopedia Facial (BBO) como parte dos requisitos para obtenção do título de Diplomado pelo BBO.


Subject(s)
Adolescent , Female , Humans , Malocclusion, Angle Class I/therapy , Cephalometry/methods , Facial Asymmetry/diagnosis , Facial Asymmetry/therapy , Incisor/pathology , Malocclusion, Angle Class I/diagnosis , Mandible/pathology , Maxilla/pathology , Patient Care Planning , Radiography, Bitewing , Radiography, Panoramic , Tooth Movement Techniques/methods
19.
Dental press j. orthod. (Impr.) ; 19(1): 106-112, Jan-Feb/2014. graf
Article in English | LILACS | ID: lil-709636

ABSTRACT

INTRODUCTION: Dental transposition and impaction are disorders related to ectopic eruption or failure in tooth eruption, which can affect child physical, mental and social development and may be difficult to be clinically solved. METHODS: We describe a case of transposition between the upper left canine and lateral incisor associated with impaction of the central incisor on the same side, in a 12-year-old patient. Conservative treatment involving surgical-orthodontic correction of transposed teeth and traction of the central incisor was conducted. CONCLUSION: The option of correcting transposition and orthodontic traction by means of the segmented arch technique with devices such as cantilever and TMA rectangular wire loops, although a complex alternative, was proved to be esthetically and functionally effective. .


INTRODUÇÃO: transposição e impacção dentárias são distúrbios relacionados à erupção ectópica ou à falha na erupção dentária, que podem afetar o desenvolvimento físico, psíquico e social da criança, e que podem ser de difícil resolução clínica. MÉTODOS: é descrito um caso clínico de transposição entre o canino e o incisivo lateral superior esquerdo, associado à impacção do incisivo superior, do mesmo lado, em uma paciente de 12 anos de idade. Optou-se pela realização de tratamento ortodôntico-cirúrgico conservador, envolvendo a correção ortodôntica dos dentes transpostos e o tracionamento do incisivo central impactado. CONCLUSÃO: a opção pela correção da transposição e tracionamento ortodôntico com a utilização da técnica do arco segmentado com uso de dispositivos como cantiléver e alças em fios TMA retangulares, apesar de ser uma alternativa de execução complexa, mostrou-se efetiva do ponto de vista estético e funcional. .


Subject(s)
Child , Female , Humans , Cuspid/pathology , Incisor/pathology , Maxilla/pathology , Tooth Eruption, Ectopic/therapy , Tooth, Impacted/therapy , Orthodontic Appliance Design , Orthodontic Brackets , Orthodontic Wires , Patient Care Planning , Space Maintenance, Orthodontic/instrumentation , Surgical Flaps/surgery , Tooth Eruption, Ectopic/surgery , Tooth Movement Techniques/instrumentation , Tooth Movement Techniques/methods , Tooth, Impacted/surgery
20.
Dental press j. orthod. (Impr.) ; 19(1): 19-25, Jan-Feb/2014. tab, graf
Article in English | LILACS | ID: lil-709641

ABSTRACT

INTRODUCTION: Due to the lack of studies that distinguish between dentoalveolar and basal changes caused by the Thurow appliance, this clinical study, carried out by the School of Dentistry - State University of São Paulo/Araraquara, aimed at assessing the dental and skeletal changes induced by modified Thurow appliance. METHODS: The sample included an experimental group comprising 13 subjects aged between 7 and 10 years old, with Class II malocclusion and anterior open bite, and a control group comprising 22 subjects similar in age, sex and mandibular plane angle. Maxillary/mandibular, horizontal/vertical, dental/skeletal movements (ANS, PNS, U1, U6, Co, Go, Pog, L1, L6) were assessed, based on 14 landmarks, 8 angles (S-N-ANS, SNA, PPA, S-N-Pog, SNB, MPA, PP/MPA, ANB) and 3 linear measures (N-Me, ANS-Me, S-Go). RESULTS: Treatment caused significantly greater angle decrease between the palatal and the mandibular plane of the experimental group, primarily due to an increase in the palatal plane angle. ANB, SNA and S-N-ANS angles significantly decreased more in patients from the experimental group. PNS was superiorly remodeled. Lower face height (ANS-Me) decreased in the experimental group and increased in the control group. CONCLUSIONS: The modified Thurow appliance controlled vertical and horizontal displacements of the maxilla, rotated the maxilla and improved open bite malocclusion, decreasing lower facial height. .


INTRODUÇÃO: devido ao número reduzido de estudos que distinguem entre as mudanças dentoalveolares e ósseas produzidas pelo aparelho de Thurow, esse estudo clínico, conduzido pelo departamento de Ortodontia da Faculdade de Odontologia de Araraquara, foi proposto para avaliar as mudanças dentárias e esqueléticas induzidas pelo aparelho de Thurow modificado. MÉTODOS: a amostra incluiu um grupo experimental de 13 indivíduos, entre 7 e 10 anos de idade, com má oclusão Classe II e mordida aberta anterior, e um grupo controle de 22 indivíduos, com idades, plano mandibular e má oclusão similares. Com base em 14 pontos cefalométricos, 8 ângulos (S-N-ANS, SNA, PPA, S-N-Pog, SNB, MPA, PP/MPA, ANB) e 3 medidas lineares (N-Me, ANS-Me, S-Go), foram avaliados movimentos maxilares e mandibulares horizontais e verticais dentários e esqueléticos (ANS, PNS, U1, U6, Co, Go, Pog, L1, L6). RESULTADOS: o tratamento produziu diminuição significativamente maior no ângulo entre o plano palatino e o plano mandibular do grupo controle, devido ao aumento do ângulo do plano palatino. Os ângulos A-N-B, S-N-A e S-N-ANS diminuíram significativamente mais no grupo tratado. A PNS sofreu remodelação superior. A altura facial inferior (ANS-Me) diminuiu no grupo tratado, ao passo que aumentou no grupo controle. CONCLUSÕES: o aparelho controlou deslocamento vertical e horizontal da maxila, rotacionou a maxila para melhorar a mordida aberta e diminuiu a altura facial inferior. .


Subject(s)
Child , Female , Humans , Male , Extraoral Traction Appliances , Malocclusion, Angle Class II/therapy , Orthodontic Appliance Design , Open Bite/therapy , Alveolar Process/pathology , Anatomic Landmarks/pathology , Case-Control Studies , Cephalometry/methods , Chin/pathology , Follow-Up Studies , Incisor/pathology , Malocclusion, Angle Class II/pathology , Mandible/pathology , Mandibular Condyle/pathology , Maxilla/pathology , Molar/pathology , Nasal Bone/pathology , Open Bite/pathology , Palatal Expansion Technique/instrumentation , Palate/pathology , Retrospective Studies , Rotation , Sella Turcica/pathology , Tooth Movement Techniques/instrumentation , Vertical Dimension
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