Aplicação da tomografia computadorizada de feixe cônico na determinação do volume de tecido dentário removido na abertura coronária
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Data
2018-02-27
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
Aim: to evaluate the use of CBCT to determine, in mm3
, the volume of
dental tissue removed during endodontic access in human premolars. Materials
and methods: For this analysis, CBCT was used in 20 teeth before and after
endodontic access, performed with spherical and conical diamond burs. The
CBCT used was I-CAT (Imaging Sciences International, Hatfield, PA, USA), with
the following setup: 0.25 mm voxel, 13 cm FOV, 30s, 120 kVp and 3,8 mA current.
DICOM images were loaded on two softwares, InVesalius® and Materialise
Mimics/3-matic®. A 3D reconstruction of the tomography imagens was realized on
both softwares, and it was calculated the initial (Vi) and final volume (Vf). The
volume of removed tissue (Vr) was calculated through the formula: Vr = Vi – Vf.
Results: The calculated data, for softwares Materialise and InVesalius,
respectively, were: mean Vi of 441,79 ± 85,08mm3 and 442,01 ± 84,83mm3
; mean
Vf of 426,75 ±83,88mm3 and 426,94 ± 83,75mm3
; mean Vr of 15,04 ± 4,32mm3
and 15,07 ± 4,16mm3
. No statistically significant diferences were found on the
volume calculated on the different softwares in all measures, initial, final and
removed. (p>0,05). However, there was a significant difference between the initial
and final volume values calculated on the same software (p<0,05). Conclusion:
CBCT is a tool that can be used to determine the volume of dental tissue removed
during endodontic access, in vitro, associated with specific softwares for this
purpose.
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Citação
CHAVES, G. S. Aplicação da tomografia computadorizada de feixe cônico na determinação do volume de tecido dentário removido na abertura coronária. 2018. 48 f. Dissertação (Mestrado em Odontologia) - Universidade Federal de Goiás, Goiânia, 2018.