6 documents found, page 1 of 1
Accuracy of linear measurements before and after digitizing periapical and pano...
Langlois,Caroline de Oliveira; Sampaio,Maria Carméli Correia; Silva,Alexandre Emidio Ribeiro; Costa,Nilza Pereira da; Rockenbach,Maria Ivete BolzanThe aim of this study was to evaluate the accuracy of linear measurements made on conventional and digitized periapical and panoramic radiographic images of dry human hemi-mandibles. Images from the posterior region of 22 dry human hemi-mandibles were obtained by conventional panoramic and periapical radiography technique. Using a digital caliper, 3 vertical measurements were marked directly on the dry hemi-man...
Preload and torque removal evaluation of three different abutment screws for si...
Stüker,Rafael Augusto; Teixeira,Eduardo Rolim; Beck,João Carlos Pinheiro; Costa,Nilza Pereira daSeveral authors still consider the mechanical problems of fracture and component loosening as the main causes of failure of implant-supported restorations. The purpose of this in vitro study was to compare the preload of three types of screw for transmucosal abutment attachment used in single implant-supported prosthesis through strain gauge and removal torque measurements. Three external hex fixtures were used...
Efeitos da radioterapia no tecido ósseo
Cunha,Samantha Seara Da; Sarmento,Viviane Almeida; Ramalho,Luciana Maria Pedreira; Freitas,André Carlos de; Almeida,Darcy de; Tavares,Maria EulinaOBJETIVO: Avaliar os efeitos da radioterapia e a acurácia da mensuração do nível de cinza do tecido ósseo em imagens radiográficas. MATERIAIS E MÉTODOS: Quatro ratos Wistar foram submetidos a radioterapia externa (dose única de 3.000 cGy) em uma área de 2 cm × 2 cm na perna direita. Os animais foram sacrificados seis semanas após a radioterapia, e tanto as pernas irradiadas quanto as contralaterais (não-irradia...
Seqüela após redução de fratura zigomática empregando fio de Kirschner: relato ...
Vier,Fabiana Vieira; Marinho,Sandra Aparecida; Gabriel,João Guilherme; Costa,Nilza Pereira da; Veeck,Elaine Bauer; Warszawsky,DeniseO presente trabalho objetiva apresentar e discutir um caso clínico em que o fio de Kirschner foi empregado para fixação do osso zigomático fraturado, não sendo removido após quatro semanas, como recomendado pela literatura, comportando-se como corpo estranho, e sendo então removido.
Influence of soft tissues on mandibular gray scale levels
Souza,Paulo Henrique Couto; Costa,Nilza Pereira da; Veeck,Elaine BauerThe purpose of this study was to analyze the gray levels, expressed in pixels, of the mandibular retromolar region, with regard to the influence of muscular and fat soft tissues near this region. Fifteen dry mandibles were X-rayed with the presence of soft tissue simulators. The radiographs were digitized and evaluated by Digora® software. A one cm thick layer of wax was used as a simulator of the muscular soft...
Evaluation of mandibular implant sites: correlation between panoramic and linea...
Rockenbach,Maria Ivete Bolzan; Sampaio,Maria Carméli Correia; Costa,Lino João da; Costa,Nilza Pereira daThe reliability of the linear tomography and panoramic radiography made with X-ray equipment was evaluated (Vera View Scope X-600; Morita). The sample was composed of 20 dry human hemimandibles, in which the area selected for analysis was 1.5 cm distal from the limit set before the mental foramen. Four measurements were made. The images obtained were drawn on acetate paper and the hemimandibles cut at the demar...