Caracterização da imagem do canal radicular preenchido com hidróxido de cálcio na tomografia computadorizada de feixe cônico

Resumo

Aim: To characterize the image of the root canal fil- led in with calcium hydroxide in cone beam computed tomography (CBCT). Methodology: Twenty-seven root canals were prepared up to K-file #50, 1 mm below the foramen. After, the teeth were ran- domly divided into three groups: group 1- root canals filled in with calcium hydroxide paste associated with saline (n=9); group 2- root canals filled with Endo-Fill ® and gutta-percha (n=9); group 3- root canals without filling (n=9). After root canals preparation and filling, CBCT images were acquired and the specimens sectioned in axial, sagittal or coronal plans using Endo Z drills at high speed. Root canals measurements from cross sections of specimens were obtained using a digital caliper, and from CBCT images using the manufacturer’s software. The differences between the sizes of specimens and CBCT images were determined at different plans. Results: Specimens images of the group containing cal- cium hydroxide paste had densities similar to those ones obser- ved in dentin, which did not allow the measurement in order to determine size change. The group filled in with Endo-Fill ® and gutta-percha showed an increase of 37.40% to 47.40% in the dimensions of radiopaque images. Conclusion: Images of cone beam computed tomography in root canals filled in with calcium hydroxide pastes showed den- sities similar to those of dentin, which did not determine dimen- sional changes. Care should be taken that these images are not confused with calcified canals.

Descrição

Palavras-chave

Tomografia computadorizada de feixe cônico, Imagens, Hidróxido de cálcio, Medicação intracanal, Cone beam computed tomography, Intracanal dressing, Calcium hydroxide, Images

Citação

ESTRELA, Carlos et al. Caracterização da imagem do canal radicular preenchido com hidróxido de cálcio na tomografia computadorizada de feixe cônico. Robrac : revista odontologica do Brasil Central, Goiânia, v. 20, n. 52, p. 15-19, 2011.