Dental Radiography
Mostrando 13-24 de 69 artigos, teses e dissertações.
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13. Panorametry : suggestion of a method for mandibular measurements on panoramic radiographs
Background: Orthopantomography (panoramic radiography) has been used for the study of measurements involving particularly the prediction of the eruption of impacted lower third molars and analyses of measurements of the ramus and head of mandible. The discrepancies involved with the projection of this radiographic image has stimulated the search for further
Publicado em: 2010
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14. Effect of image compression on the radiographic diagnosis of external root resorptions = Efeito da compressão da imagem no diagnóstico radiográfico de reabsorções radiculares externas / Efeito da compressão da imagem no diagnóstico radiográfico de reabsorções radiculares externas
Para avaliar o efeito da compressão JPEG sobre o desempenho no diagnóstico radiográfico de reabsorções radiculares externas, 33 incisivos centrais superiores foram montados em um simulador de tecidos e radiografados. Reabsorções radiculares externas de diferentes tamanhos foram simuladas seqüencialmente nas superfícies proximais de cada dente com br
Publicado em: 2010
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15. Influência de diferentes tempos de exposição na detecção de cárie em um sistema digital wireless / Effect of different exposure times on caries detection using a wireless digital system
O objetivo, neste trabalho, foi verificar se diferentes tempos de exposição interferem no diagnóstico de cáries proximais e no valor médio do pixel da imagem do sistema Schick CDR Wireless. Foram obtidas imagens de 10 phantoms, constituídos de dentes humanos, e de uma escala de alumínio utilizando-se diferentes tempos de exposição. Os oito tempos de
Publicado em: 2010
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16. Avaliação radiográfia da dentina de molares decíduos com lesões de cárie profundas submetidos ao tratamento restaurador atraumático : densidade óptica e interpretação clínica visual
Objetivo: Avaliar as variações de densidade óptica da dentina de molares decíduos com lesão de cárie profunda (oclusal), submetidos ao Tratamento Restaurador Atraumático, após três e seis meses. Método: Foram analisadas radiografias interproximais padronizadas digitalizadas de 20 pacientes (42 dentes) com idade entre 4 a 9 anos, para determinar qua
Publicado em: 2010
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17. Evaluation of simulated bone lesion in the head of the mandible by using multislice computed tomography
Conventional radiography has shown limitation in acquiring image of the ATM region, thus, computed tomography (CT) scanning has been the best option to the present date for diagnosis, surgical planning and treatment of bone lesions, owing to its specific properties. OBJECTIVE: The aim of the study was to evaluate images of simulated bone lesions at the head
Journal of Applied Oral Science. Publicado em: 2009-10
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18. In vitro incidence of root canal bifurcation in mandibular incisors by radiovisiography
OBJECTIVE: The aim of this study was to verify, in vivo and in vitro, the prevalence of root canal bifurcation in mandibular incisors by digital radiography. MATERIAL AND METHODS: Four hundred teeth were analyzed for the in vivo study. Digital radiographs were taken in an orthoradial direction from the mandibular incisor and canine regions. The digital radio
Journal of Applied Oral Science. Publicado em: 2009-06
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19. Human identification by maxillary sinus in panoramic dental radiograph / Identificação humana através da análise do seio maxilar em radiografias panorâmicas
The maxillaries sinus can supply real value subsidies for the forensic identification. The sinus outlines individuality allows an accuracy and meticulous analysis, reducing the mistakes risks during the expert performance. The aims of this study were: to evaluate the possibility of sex estimate and individual human identification for the maxillaries sinus an
Publicado em: 2009
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20. PREVALENCE, DIAGNOSIS AND CRITERIA FOR IDENTIFICATION OF RISK FACTORS FOR LOCAL Periimplantitis / PREVALÊNCIA, CRITÉRIOS DE DIAGNÓSTICO E IDENTIFICAÇÃO DE FATORES DE RISCO LOCAIS PARA A PERIIMPLANTITE
The aim of this study was to identify potential risk factors for periimplantitis based on data collected from a private clinic in Campina Grande-PB. Information collected from dental charts included patient sex, age and time period since installation of the implant or prosthesis. Clinical examination was carried out at each implant site where health conditio
Publicado em: 2009
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21. Comparative study between Cone-Beam volumetric tomography and periapical radiographs on helping Endodontic diagnosis / ESTUDO COMPARATIVO ENTRE A TOMOGRAFIA VOLUMÉTRICA CONE-BEAM E RADIOGRAFIAS PERIAPICAIS NO AUXÍLIO AO DIAGNÓSTICO ENDODÔNTICO
This study aimed to analyze and compare volumetric tomography Cone- Beam and periapical examination, by technique of Clark, identifying accidents and endodontic complications, which were simulated, for endodontic interest. Sixteen human teeth from three human jaws were submitted to preparation of 20 changes/injuries in order to simulate situations that can l
Publicado em: 2009
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22. Tecnologias de exame da carie dentaria : o desafio de seu uso sob diferentes criterios de diagnostico / Caries detection technologies : the challenge of their use under different caries diagnostic criteria
The world development pattern of dental caries disease has increased the complexity of carious lesions diagnosis especially in occlusal surfaces by the visual-tactile exam, constituting one of the great challenges of the Public Health Dentistry. The aim of this study was to verify the reproducibility (intra and interexaminer Kappa [к] statistics) and t
Publicado em: 2009
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23. Evaluation of influence of DICOM and JPEG formats in the reproducibility of cephalometric landmarks in digital Frontal Teleradiographies / Avaliação da influência dos formatos DICOM e JPEG na reprodutibilidade de pontos cefalométricos em Telerradiografia digital em Norma Frontal
The digital image on DICOM format request a large store size capability, making difficult the transmission through internet, usually requesting the image compression via JPEG file format. The aim of this study was to evaluate the influence of DICOM and JPEG file formats on Quality Factors 100, 80 and 60, in the reproducibility intra and interexaminer at ceph
Publicado em: 2009
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24. Avaliação objetiva da qualidade do filme Contrast FV-58 em soluções frescas e degradadas
The use of intraoral radiographs is quite common in daily practice of dentistry and the radiographic film has been the most used means of capture, disposal and storage of radiographic images. However, X-ray emission can produce deleterious biological effects. One of the easiest ways to reduce the radiation needed to produce radiographs is the use of more sen
Publicado em: 2009