NUMERO: #20231201

Título: Interference of artifacts from metal dental crowns with image segmentation on CBCT in occlusion and non-occlusion

Nome do Apresentador: Marcos Antônio Lima dos SANTOS

Categoria do Trabalho: Painel de pesquisa científica (PPC)

Área Temática: Imaginologia dentomaxilofacial

Resumo: Objectives: To evaluate the interference of artifacts from metal dental restorations with superimposed DICOM and STL files with automatic segmentation using CBCT planning software and compare this interference with image acquisition in occlusion and non-occlusion. Study Design: CBCT scan files in DICOM format were acquired following intraoral scans performed in 97 patients. The DICOM files were selected and superimposed on their corresponding STL file based on four fixed anatomical positions in the 3D arches to standardize the superposition. Results: The overall results showed a mean of 0.489 mm, with a maximum standard deviation of ±1,353 mm. The analysis of variance showed a significant influence regarding the number of metal restorations on the deviations of models in the horizontal/anterior position (p=0.009). Group 1 showed a statistically significant difference from group 2. Group 0 did not statistically significantly differ from groups 1 and 2. When comparing occlusion and non-occlusion, VP and VA positions showed a statistically significant difference. Conclusions: Whether the patient is in occlusion or not, metal artifacts did not interfere with CBCT planning software for superimposed images in vertical analyses. However, horizontally, there was an inferred discrepancy in the adjustments to DICOM-STL segmentation.

Autor 1:  Marcos Antônio Lima dos SANTOS

E-mail 1:  [email protected]

Autor 2:   Aline Piruna Martins Santos

E-mail 2:  [email protected]

Autor 3 :  Wilton Mitsunari Takeshita

E-mail 3:  [email protected]

Autor 4:  Lucas Alves da Mota Santana

E-mail 4:  [email protected]

Autor 5:  Francisco Barbara Abreu Barros

E-mail 5:  [email protected]

Autor 6:  Vítor Marques Sapata

E-mail 6:  [email protected]

Autor 7:  Marcelo Gusmão Paraíso Cavalcanti

E-mail 7:  [email protected]