scholarly journals Detection of peri-implant bone defects using cone-beam computed tomography and digital periapical radiography with parallel and oblique projection

2019 ◽  
Vol 49 (4) ◽  
pp. 265 ◽  
Author(s):  
Bardia Vadiati Saberi ◽  
Negar Khosravifard ◽  
Farnaz Ghandari ◽  
Arash Hadinezhad
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Bone Defects ◽  
Cone Beam ◽  
Oblique Projection ◽  
Periapical Radiography

scholarly journals Comparison of the different voxel sizes in the estimation of peri-implant fenestration defects using cone beam computed tomography: an ex vivo study

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Mehmet Hakan Kurt ◽  
Nilsun Bağış ◽  
Cengiz Evli ◽  
Cemal Atakan ◽  
Kaan Orhan
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Ex Vivo ◽  
Statistical Significance ◽  
Area Under The Curve ◽  
Titanium Implant ◽  
Bone Defects ◽  
Titanium Implants ◽  
Cone Beam ◽  
Voxel Size

Abstract Background To examine the influence of voxel sizes to detect of peri-implant fenestration defects on cone beam computed tomography (CBCT) images. Materials and methods This study performed with three sheep heads both maxilla and mandible and two types of dental implant type 1 zirconium implant (Zr40) (n = 6) and type 2 titanium implant (Ti22) (n = 10). A total of 14 peri-implant fenestrations (8 buccal surfaces, 6 palatal/lingual surface) were created while 18 surfaces (8 buccal, 10 palatal/lingual) were free of fenestrations. Three observers have evaluated the images of fenestration at each site. Images obtained with 0.75 mm3, 0.100 mm3, 0.150 mm3, 0.200 mm3, and 0.400 mm3 voxel sizes. For intra- and inter-observer agreements for each voxel size, Kappa coefficients were calculated. Results Intra- and inter-observer kappa values were the highest for 0.150 mm3, and the lowest in 0.75 mm3 and 0.400 mm3 voxel sizes for all types of implants. The highest area under the curve (AUC) values were found higher for the scan mode of 0.150 mm3, whereas lower AUC values were found for the voxel size for 0.400 mm3. Titanium implants had higher AUC values than zirconium with the statistical significance for all voxel sizes (p ≤ 0.05). Conclusion A voxel size of 0.150 mm3 can be used to detect peri-implant fenestration bone defects. CBCT is the most reliable diagnostic tool for peri-implant fenestration bone defects.

Prognosis of root canal treatment in teeth with preoperative apical periodontitis: a study with cone‐beam computed tomography and digital periapical radiography

2019 ◽  
Vol 52 (11) ◽  
pp. 1533-1546 ◽  
Author(s):  
F. A. Restrepo‐Restrepo ◽  
S. J. Cañas‐Jiménez ◽  
R. D. Romero‐Albarracín ◽  
P. A. Villa‐Machado ◽  
M. I. Pérez‐Cano ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Apical Periodontitis ◽  
Root Canal Treatment ◽  
Cone Beam ◽  
Periapical Radiography
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