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Estudo cefalométrico comparativo do tratamento da má oclusão de Classe II com os distalizadores Pendulum e Jones Jig seguidos do aparelho fixo corretivo; Comparative cephalometric study of Class II malocclusion treatment with the pendulum and jones jig appliances followed by fixed corrective orthodontics

Patel, Mayara Paim
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 04/02/2011 PT
Relevância na Pesquisa
36.98%
A proposta deste estudo foi comparar cefalometricamente os efeitos esqueléticos e dentoalveolares no tratamento da má oclusão de Classe II com os distalizadores Pendulum e Jones jig, seguidos do aparelho fixo corretivo e compará-los ao grupo controle. O grupo 1 foi composto de 23 pacientes com Classe II tratados com o distalizador Pendulum seguido do aparelho fixo corretivo, sendo que do número total de pacientes, 19 foram comparados ao grupo Jones jig, apresentando média de idade inicial de 13,86 anos; 18 pacientes foram comparados com os grupos Jones jig e controle, com média de idade inicial de 13,92 anos. O grupo 2 compreendeu 25 pacientes com Classe II tratados com o distalizador Jones jig seguido do aparelho fixo corretivo, com média de idade inicial de 12,90 comparados aos grupos Pendulum e controle; porém, somente 21 pacientes foram comparados com o grupo Pendulum, com média de idade inicial de 13,08 anos. Os pacientes foram dessa forma divididos a fim de compatibilizar média de idade inicial e tempo de tratamento, conferindo confiabilidade ao estudo comparativo. O grupo 3 compreendeu 19 jovens com má oclusão de Classe II não tratada e média de idade inicial de 12,88 anos. Os dois grupos experimentais foram avaliados individualmente por meio do teste ANOVA dependente e teste de Tukey...

Análise tomográfica quantitativa linear de espessuras ósseas alveolares com vistas ao diagnóstico em ortodontia - Proposta de método; A quantitative linear tomographic analisys of the alveolar bone thicknesses and its implications to diagnosis in Orthodontics A method proposal

Silva, Siddhartha Uhrigshardt
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 01/06/2012 PT
Relevância na Pesquisa
36.98%
O objetivo principal desta pesquisa foi justificar a proposta de utilização de um novo método tomográfico (cone beam) de avaliação das espessuras ósseas alveolares, maxilares e mandibulares, por meio de testes objetivos das Condições de Repetitividade e de Precisão Intermediária associadas à variação intra e interoperadores, e conforme a utilização de programa computacional independente (AutoCAD®) para a realização das medições, aplicadas à sequência do Procedimento Operacional Padrão (POP) definido para este experimento. A Fase I da pesquisa registrou os critérios de obtenção da qualidade final das imagens tomográficas definitivas, a partir de equipamento iCAT® (Imaging Sciences International, Hatfield, Pa), com parâmetros de aquisição de 120KVp, 37,7mA e 26,9s, e considerando FOV cilíndrico de 13cm e matriz de 512x512 pixels. A resolução do voxel foi de 0,25mm; A Fase II registrou os critérios exploratórios relativos às condições operacionais do software de visualização, registro (inspeção e identificação) e medição das grandezas selecionadas. A Fase III registrou a realização dos testes de repetitividade e de reprodutibilidade das medidas. Um total de 72 grandezas lineares foram previamente definidas e metodologicamente testadas em sua qualidade de inspeção...

Análise do comportamento biomecânico de fios ortodônticos após tratamento de superfície

Moreira, Renata Helena da Silva
Fonte: Universidade Estadual Paulista (UNESP) Publicador: Universidade Estadual Paulista (UNESP)
Tipo: Dissertação de Mestrado Formato: 106 f. : il.
POR
Relevância na Pesquisa
27.31%
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Pós-graduação em Engenharia Mecânica - FEG; Fios ortodônticos são fabricados com uma série de materiais como aço inoxidável, metais, cerâmicas e polímeros. No meio bucal, eles estão sujeitos a fluídos corrosivos e variação de pH podendo levar a liberação de íons níquel nos tecidos e fluídos corpóreos. Neste estudo in vitro, filmes de carbono amorfo hidrogenado A-C:H foram depositados em fios ortodônticos empregando a técnica de PECVD para inibir a liberação de íons. O arranjo estrutural dos fios foi estudado a partir de Espectroscopia Raman e a molhabilidade avaliada medindo-se o ângulo de contato da superfície. Para avaliar a liberação de íons, os arcos ortodônticos (com e sem filme) foram montados em modelos confeccionados com resina e imersos em solução fisiológica a 37°C por 30 dias. Durante o tempo de imersão as amostras foram lavadas e/ou imersas em colutórios diariamente. Espectrofotometria de absorção atômica foi usada para medir a liberação de elementos a partir de amostras. Os resultados mostraram que o revestimento previne a liberação de Ni dos fios. O tratamento de superfície alterou o comportamento mecânico dos fios avaliados; Orthodontics wires are made from a variety of metals such as stainless steel...

Scientific use of the finite element method in Orthodontics

Knop, Luegya; Gandini Jr., Luiz Gonzaga; Shintcovsk, Ricardo Lima; Gandini, Marcia Regina Elisa Aparecida Schiavon
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: 119-125
ENG
Relevância na Pesquisa
36.98%
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); INTRODUCTION: The finite element method (FEM) is an engineering resource applied to calculate the stress and deformation of complex structures, and has been widely used in orthodontic research. With the advantage of being a non-invasive and accurate method that provides quantitative and detailed data on the physiological reactions possible to occur in tissues, applying the FEM can anticipate the visualization of these tissue responses through the observation of areas of stress created from applied orthodontic mechanics. OBJECTIVE: This article aims at reviewing and discussing the stages of the finite element method application and its applicability in Orthodontics. RESULTS: FEM is able to evaluate the stress distribution at the interface between periodontal ligament and alveolar bone, and the shifting trend in various types of tooth movement when using different types of orthodontic devices. Therefore, it is necessary to know specific software for this purpose. CONCLUSIONS: FEM is an important experimental method to answer questions about tooth movement, overcoming the disadvantages of other experimental methods.; Introdução: o Método de Elementos Finitos (MEF) é um recurso da Engenharia empregado para calcular o estresse e a deformação de estruturas complexas...

An in vitro comparison of the force decay generated by different commercially available elastomeric chains and NiTi closed coil springs

Santos,Ana Cristina Soares; Tortamano,André; Naccarato,Sandra Regina Frazatto; Dominguez-Rodriguez,Gladys Cristina; Vigorito,Julio Wilson
Fonte: Sociedade Brasileira de Pesquisa Odontológica - SBPqO Publicador: Sociedade Brasileira de Pesquisa Odontológica - SBPqO
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2007 EN
Relevância na Pesquisa
27.49%
This in vitro study was designed to compare the forces generated by commercially available elastomeric chains and NiTi closed coil springs, and to determine their force decay pattern. Forty elastomeric chains and forty NiTi closed coil springs were divided into 4 groups according to the following manufacturers: (1) Morelli®, (2) Abzil®, (3) TP Orthodontics® and (4) American Orthodontics®. The specimens were extended to twice their original length and stored in artificial saliva at 37°C. Initial force was measured by means of an Instron universal testing machine and then at 1, 4, 7, 14, 21, and 28 days. The results revealed that the elastomeric chains delivered a mean initial force of 347 g for Morelli®, 351 g for American Orthodontics®, 402 g for Abzil®, and 404 g for TP Orthodontics®. The NiTi closed coil springs generated a mean initial force of 196 g for American Orthodontics®, 208 g for TP Orthodontics®, 216 g for Abzil®, and 223 g for Morelli®. The mean percentage of force decay observed after 28 days for the elastomeric chains was 37.4% for TP Orthodontics®, 48.1% for American Orthodontics®, 65.4% for Morelli®, and 71.6% for Abzil®. After 28 days, the NiTi closed coil springs presented a mean percentage of force decay of 22.6% for American Orthodontics®...

Asymmetric extractions in orthodontics

Melgaço,Camilo Aquino; Araújo,Mônica Tirre de Souza
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2012 EN
Relevância na Pesquisa
36.98%
INTRODUCTION: Extraction decisions are extremely important in during treatment planning. In addition to the extraction decision orthodontists have to choose what tooth should be extracted for the best solution of the problem and the esthetic/functional benefit of the patient. OBJECTIVE: This article aims at reviewing the literature relating the advantages, disadvantages and clinical implications of asymmetric extractions to orthodontics. METHODS: Keywords were selected in English and Portuguese and the EndNote 9 program was used for data base search in PubMed, Web of Science (WSc) and LILACS. The selected articles were case reports, original articles and prospective or retrospective case-control studies concerning asymmetrical extractions of permanent teeth for the treatment of malocclusions. CONCLUSION: According to the literature reviewed asymmetric extractions can make some specific treatment mechanics easier. Cases finished with first permanent molars in Class II or III relationship in one or both sides seem not to cause esthetic or functional problems. However, diagnosis knowledge and mechanics control are essential for treatment success.

The role of friction in orthodontics

Pacheco,Mariana Ribeiro; Jansen,Wellington Corrêa; Oliveira,Dauro Douglas
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2012 EN
Relevância na Pesquisa
36.98%
INTRODUCTION: Sliding mechanics is widely used during orthodontic treatment. One of the disadvantages of this mechanics is the friction generated at the bracket/archwire interface, which may reduce the amount of desired orthodontic movement obtained. Due to the application and great acceptance of this type of mechanics, the role of friction in Orthodontics has been of interest for both clinicians and scientists. OBJECTIVE: Therefore, this article discussed how friction affects orthodontic tooth movement, with an approach to its clinical implications as well as the evolution of dental materials and its properties regarding resistance to sliding.

Interrelation between orthodontics and phonoaudiology in the clinical decision-making of individuals with mouth breathing

Vanz,Rúbia Vezaro; Rigo,Lilian; Vanz,Angela Vezaro; Estacia,Anamaria; Nojima,Lincoln Issamu
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2012 EN
Relevância na Pesquisa
37.13%
OBJECTIVE: The purpose of this study was to investigate the decision making of orthodontists of Passo Fundo district - Rio Grande do Sul (RS, Brazil), in the Orthodontics/Speech Therapy interdisciplinary treatment of mouth breathing individuals. METHODS: The present study is a quantitative approach and the design is descriptive, using as instrument data collection of a questionnaire sent to 22 orthodontists practicing in the above-mentioned district. The project was approved the the Ethics in Research Committee and all individuals signed a free informed consent. RESULTS: All professionals considered the inter-relation between Orthodontics and Speech Therapy necessary, but divergences were found in situations where a associated therapy may exist, considering that 54.5% trust the inter-relation to develop aspects associated to language, orofacial motricity and habits. In cases of associated treatment, the results obtained were considered satisfactory by 73.7% of professionals, even though they consider that only 6 to 20% of their patients collaborate with treatment. CONCLUSION: In relation to decision-making in treatment of mouth breathing individuals, the orthodontists in Passo Fundo/RS agree that there is need for speech therapy. The full vision of the individual in a multidisciplinary team is of fundamental importance in the treatment of patients with mouth breathing syndrome.

Orthodontics as a therapeutic option for temporomandibular disorders: a systematic review

Machado,Eduardo; Machado,Patricia; Grehs,Renésio Armindo; Cunali,Paulo Afonso
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2012 EN
Relevância na Pesquisa
37.31%
OBJECTIVE: Orthodontics as an option for treatment and prevention of Temporomandibular Disorders (TMD) is a topic that has generated discussion over time. While an occlusion current defends Orthodontics as an alternative to treatment, another current defends more conservative and reversible treatments. The objective of this study, through a systematic literature review, was to analyze the relationship between Orthodontics and TMD, checking the effects of orthodontic therapy in treatment and prevention of TMD. METHODS: Survey in research bases: MEDLINE, Cochrane, EMBASE, Pubmed, Lilacs and BBO, between the years of 1966 and May 2009, with focus in randomized clinical trials, non-randomized prospective longitudinal studies, systematic reviews and meta-analysis was performed. RESULTS: After application of the inclusion criteria 11 articles were selected, 9 which were non-randomized prospective longitudinal studies, 1 randomized clinical trial and 1 systematic review. CONCLUSIONS: According to the literature, there is a lack of specific studies that evaluated Orthodontics as an option for treatment and prevention of TMD. Thus the data conclude that there is no significant scientific evidences that orthodontic treatment treats or prevents TMD.

Finishing procedures in Orthodontics: dental dimensions and proportions (microesthetics)

Brandão,Roberto Carlos Bodart; Brandão,Larissa Bustamente Capucho
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2013 EN
Relevância na Pesquisa
36.98%
OBJECTIVE: The objective of the present article is to describe procedures that can be performed to achieve excellence in orthodontic treatment finishing. The content is limited to microesthetics, which comprises the concept of ideal dental dimensions and proportions (white esthetics) and its correlation with the periodontium (pink esthetics). Standards of normality are described both in their real dimensions (dental height and width), and in those effectively perceived by the observer, the virtual dimensions. METHODS: The best scientific evidence was sought in the literature to support the clinical procedures that must guide the professional to obtain maximum esthetic quality on their treatments. Therefore, it is necessary to investigate what the other specialties in Dentistry expect from Orthodontics and, specially, what they have to offer. Clinical cases will be used to illustrate the dental movement that might maximize treatment outcome and to confront the ideal standards with the current state of the art. CONCLUSION: Treatment quality is directly related to the amount of procedures implemented by the orthodontist, associated with concepts and resources from Periodontics and Dental Prosthesis. Microesthetics cannot be seen in isolation...

Comparative cephalometric study of Class II malocclusion treatment with Pendulum and Jones jig appliances followed by fixed corrective orthodontics

Patel,Mayara Paim; Henriques,José Fernando Castanha; Almeida,Renato Rodrigues de; Pinzan,Arnaldo; Janson,Guilherme; Freitas,Marcos Roberto de
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2013 EN
Relevância na Pesquisa
36.98%
OBJECTIVE: The purpose of this study was to cephalometrically compare the skeletal and dentoalveolar effects in the treatment of Class II malocclusion with Pendulum and Jones jig appliances, followed by fixed corrective orthodontics, and to compare such effects to a control group. METHODS: The sample was divided into three groups. Group 1: 18 patients treated with Pendulum, Group 2: 25 patients treated with Jones jig, and Group 3: 19 young subjects with untreated Class II malocclusions and initial mean age of 12.88 years. The chi-square test was applied to assess severity and gender distribution. Groups 1 and 2 were compared to the control group by means of the one-way ANOVA and Tukey tests in order to differentiate treatment changes from those occurred by craniofacial growth. RESULTS: There were no significant changes among the three groups with regard to the components of the maxilla and the mandible, maxillomandibular relationship, cephalometric and tegumental pattern. Buccal tipping of mandibular incisors was significantly greater in the experimental groups and increased mesial angulation of the maxillary second molars was found in the Jones jig group. In the experimental groups, dental relationship, overbite and overjet were corrected. CONCLUSION: It can be stated that the distalization achieved its purpose of correcting the Class II.

Is there a consensus for CBCT use in Orthodontics?

Garib,Daniela G.; Calil,Louise Resti; Leal,Claudia Resende; Janson,Guilherme
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2014 EN
Relevância na Pesquisa
37.23%
This article aims to discuss current evidence and recommendations for cone-beam computed tomography (CBCT) in Orthodontics. In comparison to conventional radiograph, CBCT has higher radiation doses and, for this reason, is not a standard method of diagnosis in Orthodontics. Routine use of CBCT in substitution to conventional radiograph is considered an unaccepted practice. CBCT should be indicated with criteria only after clinical examination has been performed and when the benefits for diagnosis and treatment planning exceed the risks of a greater radiation dose. It should be requested only when there is a potential to provide new information not demonstrated by conventional scans, when it modifies treatment plan or favors treatment execution. The most frequent indication of CBCT in Orthodontics, with some evidence on its clinical efficacy, includes retained/impacted permanent teeth; severe craniofacial anomalies; severe facial discrepancies with indication of orthodontic-surgical treatment; and bone irregularities or malformation of TMJ accompanied by signs and symptoms. In exceptional cases of adult patients when critical tooth movement are planned in regions with deficient buccolingual thickness of the alveolar ridge, CBCT can be indicated provided that there is a perspective of changes in orthodontic treatment planning.

Scientific use of the finite element method in Orthodontics

Knop,Luegya; Gandini Jr.,Luiz Gonzaga; Shintcovsk,Ricardo Lima; Gandini,Marcia Regina Elisa Aparecida Schiavon
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2015 EN
Relevância na Pesquisa
36.98%
INTRODUCTION: The finite element method (FEM) is an engineering resource applied to calculate the stress and deformation of complex structures, and has been widely used in orthodontic research. With the advantage of being a non-invasive and accurate method that provides quantitative and detailed data on the physiological reactions possible to occur in tissues, applying the FEM can anticipate the visualization of these tissue responses through the observation of areas of stress created from applied orthodontic mechanics. OBJECTIVE: This article aims at reviewing and discussing the stages of the finite element method application and its applicability in Orthodontics. RESULTS: FEM is able to evaluate the stress distribution at the interface between periodontal ligament and alveolar bone, and the shifting trend in various types of tooth movement when using different types of orthodontic devices. Therefore, it is necessary to know specific software for this purpose. CONCLUSIONS: FEM is an important experimental method to answer questions about tooth movement, overcoming the disadvantages of other experimental methods.

Allergy and orthodontics

Chakravarthi, Sunitha; Padmanabhan, Sridevi; Chitharanjan, Arun B.
Fonte: Medknow Publications & Media Pvt Ltd Publicador: Medknow Publications & Media Pvt Ltd
Tipo: Artigo de Revista Científica
Publicado em //2012 EN
Relevância na Pesquisa
27.36%
The aim of this paper is to review the current literature on allergy in orthodontics and to identify the predisposing factors and the implications of the allergic reaction in the management of patients during orthodontic treatment. A computerized literature search was conducted in PubMed for articles published on allergy in relation to orthodontics. The MeSH term used was allergy and orthodontics. Allergic response to alloys in orthodontics, particularly nickel, has been extensively studied and several case reports of nickel-induced contact dermatitis have been documented. Current evidence suggests that the most common allergic reaction reported in orthodontics is related to nickel in orthodontic appliances and allergic response is more common in women due to a previous sensitizing exposure from nickel in jewellery. Studies have implicated allergy in the etiology of hypo-dontia. It has also been considered as a high-risk factor for development of extensive root resorption during the course of orthodontic treatment. This review discusses the relationship and implications of allergy in orthodontics.

Periodontically Accelerated Osteogenic Orthodontics

Syrrakou, Konstantina
Fonte: Universidade de Rochester Publicador: Universidade de Rochester
Tipo: Essay
ENG
Relevância na Pesquisa
36.98%
In patients with crowded teeth, does periodontically accelerated osteogenic orthodontics, as compared to conventional correct the crowding?

Biological response to corticotomy-assisted orthodontics.

Zaw, Cherry
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado
Publicado em //2013
Relevância na Pesquisa
37.13%
The aims of this study were to validate the local and regional biological response to pre-orthodontic corticotomy in an animal model; and to evaluate the local and regional bone response to a flap or corticotomy procedure with and without tooth movement. Thirty-six Sprague-Dawley rats, six to eight weeks old, were divided into six groups and treated over a seven-day period. All treatment procedures were performed on the right maxillary first molar. A custom appliance was placed at the start of the observation period and surgical procedures were performed at time of placement. In the surgery groups, a full-thickness flap was elevated along the buccal surface of the right maxillary first molar and a distal vertical relieving incision between the roots of the first and second maxillary molars. For the corticotomy groups, a slow-speed hand piece and a 0.5 mm round bur was utilised to create a trench through the cortical bone extending from the apices of the first molar horizontally and mesially beyond the mesial root in an L shape. A fixed appliance with 100 g NiTi spring was placed to produce buccal tooth movement over a total experimental time of 7 days. Following sacrifice, the specimens were prepared and resin-embedded. Micro-CT scans of the samples were performed utilising a Skyscan 1174. CTan (CT analysis program) was used to measure the bone mineral density (BMD) and bone fraction of a defined region of interest. The buccal and palatal plates of bone were assessed to evaluate local and regional bony changes...

Paediatric sleep-disordered breathing and orthodontics.

Katyal, Vandana
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado
Publicado em //2013
Relevância na Pesquisa
37.13%
The format of this current thesis is represented by 3 papers that have been accepted for publication by peer-reviewed orthodontic journals. Following is an outline and a summary of the 3 presented papers: Paper 1: Paediatric sleep-disordered breathing due to upper airway obstruction in the orthodontic setting: a review. This is a narrative literature review of the topic. Accepted for publication in the Australian Orthodontic Journal. The essential feature of paediatric sleep-disordered breathing (SDB) is increased upper airway resistance during sleep presenting clinically as snoring. Paediatric SDB is a continuum ranging from primary snoring (PS), which is not associated with gas exchange abnormalities or significant sleep fragmentation, to obstructive sleep apnoea (OSA) with complete upper airway obstruction, hypoxaemia, and obstructive hypoventilation. Adenotonsillar hypertrophy, obesity and craniofacial disharmonies are important predisposing factors in the development and progression of paediatric SDB. Clinical symptoms are manifold and domains affected include behaviour, neurocognition, cardiovascular morbidity and quality of life. Overnight polysomnography is the current diagnostic gold standard method to assess SDB severity while adenotonsillectomy is the recommended first line of treatment. Other treatments for managing paediatric SDB include nasal continuous airway pressure...

Konsequenz von Fernröntgenseitenbildern auf die Therapieentscheidung bei Frühbehandlungen in der Kieferorthopädie; Consequence of lateral cephalograms on the treatment decision for early treatment in orthodontics

Ritschel, Robert
Fonte: Universidade de Tubinga Publicador: Universidade de Tubinga
Tipo: Dissertação
DE_DE
Relevância na Pesquisa
37.23%
Um die Konsequenz von Fernröntgenseitenbildern auf die Therapieentscheidung bei Frühbehandlungen in der Kieferorthopädie zu untersuchen, wurden die Modelle, Fotos und Röntgenbilder von sechs Patienten der Poliklinik für Kieferorthopädie des ZZMK der Universitätsklinik Tübingen herangezogen. Auswahlkriterium der Patienten war die Klassifizierung einer Frühbehandlung durch Einstufung des kieferorthopädischen Behandlungsbedarfs anhand der kieferorthopädischen Indikationsgruppen (KIG). Als Auschlusskriterium galten kraniofaziale Anomalien. Die Untersuchung und Anfertigung der diagnostischen Unterlagen der Patienten erfolgte vor Beginn der späten Phase des Zahnwechsels. Der jüngste Patient war bei Behandlungsbeginn 5 Jahre und 2 Monate alt, der älteste 8 Jahre und 4 Monate. Das Durchschnittsalter lag bei 7 Jahren und 2 Monaten. Insgesamt nahmen 47 von 234 befragten Kieferorthopäden an beiden Umfragerunden teil. Sie sollten eine Therapieplanung für die sechs Patienten zu zwei Zeitpunkten T1 und T2 durchführen. Diese 47 Kieferorthopäden wurden auf drei Gruppen: A,B und C verteilt. Um den Einfluss von Fernröntgenseitenbildern auf die Therapieentscheidung der Kieferorthopäden zu untersuchen, unterschieden sich die Gruppen dadurch...

Discovering Craniofacial Patterns Using Multivariate Cephalometric Data for Treatment Decision Making in Orthodontics

Araya-Díaz, Pamela; A. Ruz, Gonzalo; Palomino, Hernán M.
Fonte: 2014 Sociedad Chilena de Anatomía Publicador: 2014 Sociedad Chilena de Anatomía
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
36.98%
Indexación: Scielo; The aim was to find craniofacial morphology patterns in a multivariate cephalometric database using a clustering technique. Cephalometric analysis was performed in a sample of 100 teleradiographs collected from Chilean orthodontic patients. Thirty cephalometric measurements were taken from commonly used analysis. The computed variables were used to perform a clustering analysis with the k-means algorithm to identify patterns of craniofacial morphology. The J48 decision tree was used to analyze each cluster, and the ANOVA test to determine the statistical differences between the clusters. Four clusters were found that had significant differences (P<0.001) in 24 of the 30 variables studied, suggesting that they represent different patterns of craniofacial form. Using the decision tree, 8 of the 30 variables appeared to be relevant for describing the clusters. The clustering analysis is effective in identifying different craniofacial patterns based on a multivariate database. The distinct clusters appear to be caused by differences in the compensation process of the facial structure responding to a genetically determined cranial and mandible form. The proposed method can be applied to several databases, creating specific classifications for each one of them. KEY WORDS: Craniofacial patterns; Morphological patterns; Clustering technique; Orthodontics. -------------------------------------------------------------------------------- RESUMEN: El objetivo fue encontrar patrones morfológicos craneofaciales...

Competencias quirúrgicas en residentes de la especialidad de ortodoncia; Surgical competence in the specialty of orthodontics residents

Vargas Calderón, Juan Carlos; Valdiri Lugo, Luz Elena
Fonte: Universidad Militar Nueva Granada; Facultad de Educación; Especialización en Docencia Universitaria Publicador: Universidad Militar Nueva Granada; Facultad de Educación; Especialización en Docencia Universitaria
Tipo: bachelorThesis; Trabajo de grado Formato: pdf; pdf
SPA
Relevância na Pesquisa
36.98%
La práctica docente en ortodoncia (Odontología Especializada) implica un proceso de enseñanza-aprendizaje que favorezca el desarrollo de competencias específicas que le permitan al futuro ortodoncista en su desempeño profesional, ejercer, hacer y cumplir con pertinencia y seguridad. Motivo por el cual, los residentes de ortodoncia deben adquirir y mantener unas habilidades y destrezas manuales especiales, que les permita realizar procedimientos para liberar dientes retenidos en los maxilares en forma adecuada evitando la reabsorción dental, bajo parámetros estrictos de seguridad del paciente y sus tejidos orales. La búsqueda bibliográfica sobre competencias en las áreas de la salud contiene un relato de las principales definiciones y las aproximaciones académicas sobre el tema, concluyendo que la enseñanza y desarrollo de competencias quirúrgicas en los residentes de ortodoncia para liberar dientes retenidos en los maxilares debe tener una secuencia académica, práctica y de evaluación que permita una curva de aprendizaje segura y eficaz.; Teaching practice in orthodontics (general dentist) involves a process of teaching and learning that fosters the development of specific skills that allow the orthodontist in your future professional performance...