The case study is a widely used method in qualitative research. Although defining the can be simple, it complex to develop its strategy. Furthermore, still often not considered sufficiently robust research strategy education field because does offer well-defined and use well-structured protocols. One of most frequent criticisms associated with approach low validity reliability. In this sense, aims concisely explore main difficulties inherent process developing study, also attempting suggest...

The use of a standardized terminology in the medical sciences is essential for both clinical practice and scientific research. In addition to facilitating communication between professionals, it enhances reliability comparisons made studies from different areas, thereby contributing higher level evidence. Examples attempts standardize other areas dedicated study craniofacial morphology can be found literature. On hand, one find orthodontic literature variety terms that render consensus...

The aim of this study was to evaluate changes in the facial profile resulting from use a twin block (TB) functional appliance. sample comprised 38 patients (24 males and 14 females) with Class II division 1 malocclusion. Nineteen subjects were treated appliance while remaining 19, who did not undergo any intervention, served as control. mean age group 9.5 years (SD 10 months) control 9.9 13 months). Lateral cephalograms obtained for all at initial consultation again after one year. profile,...

OBJECTIVE: This research aimed at comparing the qualitative chemical compositions and surface morphology of fracture regions eight types Nickel (Ni) Titanium (Ti) conventional wires, superelastic heat-activated (GAC, TP, Ormco, Masel, Morelli Unitek), to wires with addition copper (CuNiTi 27oC 35oC, Ormco) after traction test. METHODS: The analyses were performed in a scanning electronic microscope (JEOL, model JSM-5800 LV) EDS system microanalysis (energy dispersive spectroscopy). RESULTS :...

Frequentemente, estudos que utilizam populações são questionados quanto à homogeneidade de suas amostras em relação raça e etnia. Esses questionamentos procedem, pois a heterogeneidade amostral pode aumentar variabilidade dos resultados mascará-los. dois conceitos (raça etnia) confundidos inúmeras vezes, mas existem diferenças sutis entre ambos: engloba características fenotípicas, como cor da pele, etnia também compreende fatores culturais, nacionalidade, afiliação tribal, religião, língua...

To evaluate the role of genetics and tooth wear in etiology dental crowding through analysis a split indigenous Amazon population.Dental prevalence (n = 117), inbreeding coefficient 288) were compared for both villages. A biometric investigation was performed by cast 55 individuals with no loss. Mann-Whitney statistics, independent t-tests, Fisher exact tests used at P < .05.A high confirmed resultant village (F 0.25, .001). Tooth not significantly different (P .99), while higher original...

Background Studies examining human and nonhuman primates have supported the hypothesis that recent increase in occurrence of misalignment teeth and/or incorrect relation dental arches, named malocclusion, is mainly attributed to availability a more processed diet reduced need for powerful masticatory action. For first time on live populations, genetic tooth wear influences occlusal variation were examined split indigenous population. The Arara-Iriri people are descendants single couple...

To investigate the interrelationships between factors involved in orthodontic treatment seeking by children aged 12-15 years.State funded clinic at Faculty of Dentistry Rio de Janeiro State University (UERJ), Janeiro, Brazil, and a nearby public school.One hundred ninety-four adolescents years took part study; 92 had sought UERJ (orthodontic group) 102 were from school never undergone or (comparison group). Each participant underwent comprehensive oral examination, both parent child...

OBJECTIVE: This research aimed to compare, through traction tests, eight types of superelastic and heat-activated NiTi archwires, by six trade companies (GAC, TP, Ormco, Masel, Morelli Unitek) those with addition copper (CuNiTi 27ºC 35ºC, Ormco). METHODS: The tests were performed in an EMIC mechanical testing machine, model DL10000, capacity 10 tons, at the Military Institute Engineering (IME). RESULTS: results showed that, generally, archwires presented slighter deactivation loadings...

A wide variety of orthodontic wires made different alloys is available to be used in practice and may produce clinical responses during tooth movement.This research evaluated the alignment leveling lower dental arches after use three types wires.A sample 36 patients was randomly divided into 3 groups: stainless steel, multistranded steel superelastic nickel-titanium, according first used. In order observe differences position axial inclination incisors, all had lateral cephalometric...

In indigenous populations, age can be estimated based on family structure and physical examination. However, the accuracy of such methods is questionable. The aim this cross-sectional study was to evaluate occlusal tooth wear related in remote populations Xingu River, Amazon. Two hundred twenty three semi-isolated subjects with permanent dentition from Arara (n = 117), Xicrin-Kayapó 60) Assurini 46) villages were examined. control group consisted 40 non-indigenous individuals living an urban...

OBJECTIVE: To evaluate, in vitro, the shear bond strength presented by three brands of polycrystalline ceramic brackets and one brand metallic bracket; verify adhesive remnant index (ARI) after tests, analyze, through scanning electron microscopy (SEM) enamel surface topography debonding, detecting release mineral particles. METHODS: Sixty bovine lower incisors were used. Three (Allure(r), InVu(r), Clarity(r)) bracket (Geneus(r)) bonded with Transbond XT(r). Kruskal-Wallis's test...

A seleção de métodos apropriados para a análise estatística pode parecer complexa, principalmente estudantes pós-graduação e pesquisadores no início da carreira científica. Por outro lado, apresentação em PowerPoint é uma ferramenta comum pesquisadores. Assim, um tutorial Bioestatística desenvolvido poderia estreitar distância entre ortodontistas Bioestatística. Esse guia proporciona informações úteis objetivas respeito vários estatísticos empregando exemplos relacionados à Odontologia e,...

The aim of this study was to evaluate the short- and long-term treatment effects rapid maxillary expansion (RME) on soft tissue facial profile subjects treated with a modified acrylic-hyrax device. sample comprised 10 males females in mixed dentition. Their average age 9.3 years ± months pre-treatment (T1), narrow maxilla posterior crossbite, fixed expander an occlusal splint. Lateral cephalometric radiographs obtained at T1, immediately post-expansion (T2), after retention (T3) were used...