Medições de implantes através de suas imagens radiográficas

• Autor(a) principal: Boasquevisque, Camila Santos
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/14234
• topic: Dental implant; Periapical radiography; Dental prosthesis fixed by implant; Identification of the dental prosthesis; Prosthetic platform; Implante dentário; Radiografia periapical; Prótese dentária fixada por implante; Identificação da prótese dentária; Plataforma protética; CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA

The in vivo morphometry of dental implants may allow identification of the type of implant used. The objective of this study was to compare the measurements of dental implants with the measurements of their digital radiographic images and to establish their respective correlations, using a computer program to perform the measurements of the radiographic images. For this, six implants of five manufacturers were used, with platform diameter varying from 3.5 to 4.6 mm and length ranging from 8.5 to 14 mm, measured with a digital caliper. The implants were radiographed with the periapical films at three different angles, zero, 20 and 40 degrees to the plane of the object next to a sphere adopted as a radiographic calibration standard. The radiographs generated were digitalized and calibrated and measured computationally. These measurements were then correlated with the measurements of dental implants obtained through the digital caliper. The results showed that: a) The comparison of the measurements of the implants with the measurements of their radiographic images, calibrated in the same direction of the pattern in the different angulations were not statistically different; b) The measurements of the obtained images with the zero, 20 and 40 degrees angulation did not show appreciable distortion among themselves, when calibrated in the same sense of the standard; c) There was a strong correlation between the measurements of the implants and their radiographic images, when calibrated in the same direction as the standard (r = 0.99); d) The program developed for the measurement of periapical radiographs allowed measurements to be performed accurately at variations of up to 40 degrees of film angulation in relation to the implant, when calibrated in the same sense as the standard, proving that parallelism is important, but not indispensable in the identification of implants