Evaluation of crown inclination and angulation after orthodontic treatment using digital models : Comparison to the prescription of the brackets used.

PURPOSE: To compare crown inclination and angulation results obtained after orthodontic treatment to the Roth prescription. METHODS: The study design was based on files and documents obtained from a database of 26 patients who had undergone orthodontic treatment using the straight-wire technique and the Roth prescription. The crown inclination and angulation were measured using a three-dimensional (3D) cephalometric module (VistaDent, Dentsply, New York, NY, USA) by an orthodontist. A coordinate system (x, y, z) was developed for each tooth that used the Andrews plane as a para-axial reference. Descriptive statistical analysis provided the mean and standard deviation (SD) of crown inclination and angulation obtained after orthodontic treatment, which were compared to the Roth prescription. RESULTS: Method reproducibility is an important test to investigate the margin of error and to verify the reliability of results. The results at time 1 (1.6°â€¯± 1.1°) and time 2 (1.7°â€¯± 1.2°) of the pilot study were not statistically different (p = 0.99). Maxillary lateral and central incisors presented significant differences in crown angulation (p < 0.05) compared to the Roth prescription. The crown angulation of maxillary second premolars with regard to the occlusal plane presented a similar value to the Roth prescription. CONCLUSION: Crown inclination and angulation found at the end of orthodontic treatment did not match the prescription of the brackets for most teeth, as measured using digital models.

Correlation of Crown Angulation and Inclination Based on Occlusal, Camper's, and Frankfurt Planes Using Digital Models.

This study provided the measures of crown angulations and inclinations which were evaluated using 3D cephalometry. This study was conducted to demonstrate the relationship between the main planes : Camper's, Frankfurt, and occlusalplanes for guiding the positioning ofthe skull and orthodontic planning.

Unilateral fusion of maxillary lateral incisor: diagnosis using cone beam computed tomography.

Objective. The objective of this paper is to report a dental fusion case focusing on clinical and radiographic features for the diagnosis. Method. To report a case of right maxillary lateral incisor fusion and a supernumerary tooth, the anatomy of the root canal and dental united portion were assessed by cone beam computed tomography (CBCT). Results. The clinical examination showed dental juxtaposition with the absence of interdental papilla and esthetic impairment in the right maxillary lateral incisor region. The periapical radiography did not provide enough information for the differential diagnosis due to the inherent limitations of this technique. CBCT confirmed the presence of tooth fusion. Conclusion. CBCT examination supports the diagnosis and provides both the identification of changes in tooth development and the visualization of their extent and limits.

Alteração da altura papilar interincisiva devido a movimentação ortodôntica: avaliação em modelos de estudo e imagens tridimensionais / Change of incisive papilla height due to orthodontic movement: an evaluation in study models and three-dimensional images

The presence of gingival papillae in the anterior maxilla is essential to the aesthetics of the smile. The aim of this study was to evaluate alterations in the height of the upper central incisive papilla, before and after orthodontic movement, using study casts and cone beam computed tomography (CBCT). Sixteen patients between the ages of 13 and 18 years underwent orthodontic treatment. The height of the papillae was calculated in both initial and final study casts by drawing a horizontal line tangent to the zenith of the central incisors and inscribing a vertical line perpendicular to the horizontal line. Papilla height was defi ned as the distance from the tip of the papilla to the point of intersection between the two lines. Initial and final (after orthodontic treatment) CBCT images were analyzed, and the height of interproximal papillae was calculated by measuring the distance from the tip of the papilla to the alveolar bone crest. This measurement was performed in both sagittal and coronal plane views. Data were statistically analyzed using the Student t test. The level of significance was 5%. Initial mean papilla height was 4.6 ± 0.8 mm, and the final value in study casts was 4.3 ± 1.2 mm; there was not a statistically significant difference between initial and final values (p = 0.309). In the CBCT coronal sections, initial mean papilla height was 3.5 ± 1.2 mm vs. 3.1 ± 0.7 mm after treatment (p = 0.094); again, no statistically significant differences were observed. In the sagittal plane, there was a significant difference (p = 0.05) between initial (3.7 ± 1.1 mm) and final (3.1 ± 0.6 mm) mean papilla height. According to our findings, and to the different measuring techniques employed, the height of the papilla changed little as a result of orthodontic therapy.

A presença de papila gengival na região anterior da maxila é essencial para a estética do sorriso. O objetivo deste estudo foi avaliar as alterações na altura papilar dos incisivos centrais superiores, antes e após movimentação ortodôntica, utilizando modelos de estudo e tomografia computadorizada de feixe cônico (TCFC). Dezesseis pacientes, com idades entre 13 e 18 anos, foram submetidos a tratamento ortodôntico. A altura da papila foi calculada nos modelos de estudo iniciais e finais. Para isso, uma linha horizontal foi traçada tangente ao zênite dos incisivos centrais e uma linha vertical foi inscrita perpendicularmente à linha horizontal. A altura papilar foi definida como a distância entre a ponta da papila até o ponto de intersecção entre as duas linhas . Nas imagens TCFC inicial e final de cada paciente, a altura da papila foi caldulada com base na distância do ponto de contato interproximal até a crista do osso alveolar. Esta medida foi realizada em cortes sagitais e coronais. Os dados foram analisados estatisticamente utilizando teste t de Student. O nível de significância foi de 5%. A altura média inicial papilar foi de 4,6± 0,8 mm, e a final, de 4,3 ± 1,2 mm; não houve diferença estatisticamente significativa entre as medidas (p = 0,309). No corte coronal da TCFC, a altura média inicial papilar foi de 3,5 ± 1,2 mm, e a final, de 3,1 ± 0,7 mm final (p = 0,094); novamente, não houve diferença estatisticamente significativa. No corte sagital, houve uma diferença significativa (p = 0,05) entre as alturas inicial (3,7 ± 1,1 mm) e final (3,1 ± 0,6 mm) média papilar. De acordo com nossos resultados e com os diferentes métodos de medição empregados, a altura da papila sofreu pouca alteração após terapia ortodôntica.

A influência de imagens tridimensionais no plano de tratamento ortodôntico / Orthodontic treatment plan changed by 3-D images

INTRODUÇÃO: a tomografia computadorizada de feixe cônico (TCFC) foi introduzida no final da década de 90 e estudos têm aprimorado o seu emprego na Odontologia. OBJETIVO: o objetivo desse artigo foi verificar a influência de imagens tridimensionais (3D) no plano de tratamento ortodôntico. MÉTODOS: duas situações clínicas (reabsorção cervical e deiscência óssea) foram descritas por meio de imagens 3D. RESULTADOS: a conduta ortodôntica foi redirecionada para a simplificação da mecânica e o controle das lesões durante o tratamento ortodôntico. CONCLUSÃO: imagens 3D são capazes de aumentar a acurácia do diagnóstico e redirecionar o plano de tratamento ortodôntico.

INTRODUCTION: Cone-Beam Computed Tomography (CBCT) was introduced in the 90's and studies have improved its use in dentistry. OBJECTIVE: The aim of this article was to investigate the influence of three-dimensional (3D) images in orthodontic treatment planning. METHOD: Two clinical situations (bone dehiscence and cervical resorption) were described by 3D images. RESULTS: The orthodontic treatment plan was redirected to a simplified mechanics and control of the lesions during orthodontic treatment. CONCLUSION: 3D images are able to increase diagnostic accuracy and redirect orthodontic treatment plan.

Prevalência de maloclusão em indivíduos que solicitaram tratamento ortodôntico na rede pública de saúde / Prevalence of malocclusion in individuals who have requested the orthodontic treatment in public health

Objetivo: Definir a prevalência da maloclusão da população de estudantes entre 6 e 16 anos da rede pública de ensino e assim contribuir com o projeto de atendimento ortodôntico público. Material e método: Foram avaliados formulários de triagem de 1.076 pacientes (581 do gênero masculino e 495 feminino), com idade de seis a 16 anos. Resultados: Do total de fichas avaliadas, 0,83% pertenciam aos pacientes que se apresentavam no estágio da dentição decídua, 63,01% na dentição mista e 36,15% na dentição permanente. Observou-se 54,37% de maloclusão de Classe I; 31,04% de Classe II e 14,59% de Classe III. O total de 24,44% dos pacientes apresentou mordida aberta; 19,70% sobremordida profunda e 30,86% mordida cruzada. Conclusão: De acordo com os dados levantados, a amostra em sua maioria apresentava-se na dentição mista tardia (segundo período transitório), com maloclusão Classe I de Angle, apinhamento anterior e ausência de mordida cruzada.

Aim: Define the prevalence of malocclusion in the population of students aged 6 to 16 years of public education and thereby help with the project public orthodontic service. Material and method: It was examined 1076 patients (581 males and 495 females) from six to 16 years old in 25 public schools. Results: 0,83% patients were in the primary dentition, 63,01% patients were in mixed dentition and 36,15% patients were in the permanent dentition. It was found 54.37% of Class I malocclusion, 31.04% of Class II malocclusion and 14.59% of Class III malocclusion. 24.44% patients were with anterior open bite, 19.70% patients were with deep bite and 30.86% patients were in crossbite. Conclusion: According to data collected in the sample had mostly in the late mixed dentition (second transition period), with Class I Angle, anterior crowding and lack of cross-bite.

Inter-relação cirurgião dentista e radiologista: sucesso no diagnóstico odontológico / Inter-relationship dentists and radiologists: success in the diagnosis odontologico

O presente estudo teve como objetivo avaliar a relação cirurgião-dentista e radiologista-odontólogo, visando à eficácia no atendimento ao paciente que necessita de exames por imagem para o diagnóstico e planejamento da conduta clínica. Os dados coletados de 176 questionários distribuídos a cirurgiões-dentistas, excluindo-se os radiologistas, foram tabulados e analisados estatisticamente pelo programa Epi Info 6.04/2000. Dos profissionais entrevistados 54% tinham título de especialista, sendo as especialidades mais freqüentes dentística (23,3%) e ortodontia (17,5%). Quanto ao local de realização do exame radiográfico, 72,9% encaminham para centros especializados. A maioria dos entrevistados (70,7%) afirma possuir um bom relacionamento profissional com o radiologista. Existe um distanciamento dos cirurgiões-dentistas em relação à linguagem técnica utilizada no cotidiano do radiologista, sendo que a eficácia do exame radiográfico como auxiliar de diagnóstico pode ser maior quando existe uma adequada relação entre o profissional radiologista-odontólogo e os demais profissionais da classe odontológica.

The present study to objective to evaluated the professional relation between dentist and the odontological radiologist to the efficiency on treatment of patient who needs image for diagnostics exams to right clinical conduction. The final informations were obtained from a 176 questionnaires that were answered only by dentist surgeons. The radiologist was excluded of this study. These informations were statistically analyzed by Epi Info 6.04/2000 computer program. A total of 54% of the professionais has a specialist proficiency degree. The standart of proficiency more frequent was dentistry witer (23,3%) and orthodontia witer (17,5%). About the place that the radiographic exams were performed, 72,9% of the professionals refered to specialized sites. The most of the professionals (70,7%) informed that has a good professional relation with the radiologist. There is a distance on a technical language used daily by a radiologists and the dentist language. The effectiveness of the radiographic exam used as a way to greater the diagnosis could be better if the professional relation radiologist/dentist and the other professionals of the odontological class.

O conselho municipal de saúde, segundo acadêmicos de odontologia / The city health councils, according to dental students

O presente estudo objetivou analisar o nível de conhecimento dos acadêmicos do último ano das Faculdades de Odontologia da UNESP - Universidade Estadual Paulista (n=72) e UNIP - Universidade Paulista (n=15), localizadas em Araçatuba-SP, a respeito dos Conselhos Municipais de Saúde. Os participantes responderam um questionário a respeito da conceituação e composição dos CMS, suas fontes de informação sobre o assunto, abordagem do tema pela Universidade e sua participação nos conselhos de seus municípios de origem. As respostas foram processadas e analisadas por meio do programa Epi Info v. 6.04. Verificou-se que 44% dos alunos nunca ouviram falar em CMS, nenhum deles havia participado de uma reunião e apenas um sabia da composição do Conselho. Mesmo entre estudantes de curso superior, da área de saúde, existe desinformação quanto ao processo de controle social. É papel das Universidades e dos centros formadores de recursos humanos em saúde, alertar e informar sobre a atuação dos CMS, incentivando a participação na tomada de decisões para a melhoria da saúde bucal e geral da população

The aim of this study was to analyze the knowledge level of undergraduate students of UNESP - São Paulo State University (n=72) and UNIP - Paulista University (n=15) Dental Schools, located Araçatuba, Brazil, about City Health Councils (CHC). The participants answered a questionnaire about knowledge and composition of CHC, sources of information related to the subject, the theme approach by the university and their participation in the CHC of their cities. The answers were processed and analyzed by the software Epi Info (v.6.04). It was observed that 44% of the students had never heard about CHC, none of them had been in a meeting and just one subject knew the composition of the Council. Even among university students of the health sciences, there is a lack of information about the process of social control. The role of universities and centers for health-workers formation is to alert and to inform about the Health Councils work, motivating the participation of the subjects in the decisions for the improvement of general and oral health population