scholarly journals Computerized Tomography Technique for the Investigation of the Maxillary First Molar Mesiobuccal Root

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Stefano Corbella ◽  
Massimo Del Fabbro ◽  
Igor Tsesis ◽  
Silvio Taschieri
Keyword(s):  
Computerized Tomography ◽  
Cone Beam Ct ◽  
Root Anatomy ◽  
Cone Beam ◽  
Micro Ct ◽  
Common Root ◽  
Electronic Search ◽  
Weighted Means ◽  
Root Canal Morphology ◽  
Second Mesiobuccal Canal

The aim of this paper was to review the literature about the use of computerized tomography to evaluate the presence and characteristics of the second mesiobuccal canal in the maxillary first molar. An electronic search was performed. Frequencies of the presence of second mesiobuccal canal and root anatomy characteristics were extracted from the selected studies. Pooled frequencies were calculated as weighted means. Seven articles were included. A second mesiobuccal canal was present in 59.32% of the teeth, and it was noncommunicating in 58.45% of teeth presenting the canal itself. The most common root canal morphology was single canal or two separated canals. The present paper showed that cone beam CT is a viable radiologic device for the evaluation of the mesiobuccal root of maxillary first molars. In fact, it was observed that the frequency of second mesiobuccal canal detection is similar to those presented by clinical studies or micro-CT evaluations.

DEVELOPMENT AND EVALUATION OF RECONSTRUCTION METHODS FOR AN IN-HOUSE DESIGNED CONE-BEAM MICRO-CT IMAGING SYSTEM

2006 ◽  
Vol 18 (05) ◽  
pp. 270-275 ◽  
Author(s):  
HSIAO-MEI FU ◽  
HO-SHIANG CHUEH ◽  
WEN-KAI TSAI ◽  
JYH-CHENG CHEN
Keyword(s):  
Imaging System ◽  
Cone Beam Ct ◽  
Ct Imaging ◽  
Bone Sample ◽  
Cone Beam ◽  
Human Tooth ◽  
Micro Ct ◽  
Reconstruction Methods ◽  
Pixel Value ◽  
Tooth Sample

Purpose: Cone-beam micro computed tomography CT (micro-CT) can offer comprehensive 3D information and high-resolution images. This technology can be used with other imaging modalities in the preclinical application of molecular imaging research. Image reconstruction algorithm affects final image spatial resolution, which is the primary topic of this study. We use two types of reconstruction methods, which are analytical (tent-FDK) and statistical iterative (convex algorithm) algorithms, to reconstruct the micro-CT images for evaluation. Materials and Methods: In this study, projection data of the Defrise phantom and HA (Hydroxy-Apatite) phantom were obtained using an in-house designed micro-CT imaging system and images were reconstructed with the tent-FDK and convex algorithms. We develop a new way to calculate the system matrix of our micro-CT. Human tooth sample and mouse bone sample data were reconstructed with the analytic and iterative algorithms. Results: The Defrise phantom results show coronal view of the images reconstructed by the tent-FDK and convex algorithms. From the profile of the results, image reconstructed by the convex algorithm has higher pixel value in the high-density layer. Comparison of the results of human tooth sample and mouse bone sample reconstructed by the two kinds of algorithms, the image reconstructed by the convex algorithm has fewer artifacts and more correct pixel value representing for the attenuation coefficients. Conclusion: Tent-FDK algorithm is a kind of useful analytic method to reconstruct cone-beam CT data. We also develop the convex iterative method to reconstruct images for low dose X-ray cone-beam CT, which performs better than the analytical one in general.

scholarly journals A comparative evaluation of cone beam CT and micro-CT on trabecular bone structures in the human mandible

2013 ◽  
Vol 42 (8) ◽  
pp. 20130145 ◽  
Author(s):  
J Van Dessel ◽  
Y Huang ◽  
M Depypere ◽  
I Rubira-Bullen ◽  
F Maes ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Comparative Evaluation ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Micro Ct ◽  
Bone Structures

The assessment of trabecular bone parameters and cortical bone strength: A comparison of micro-CT and dental cone-beam CT

2013 ◽  
Vol 46 (15) ◽  
pp. 2611-2618 ◽  
Author(s):  
Jui-Ting Hsu ◽  
Shun-Ping Wang ◽  
Heng-Li Huang ◽  
Ying-Ju Chen ◽  
Jay Wu ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Cortical Bone ◽  
Bone Strength ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Micro Ct ◽  
Bone Parameters

scholarly journals ­­­­­Comparison of Anterior and Posterior Trabecular Bone Microstructure of Human Mandible Using Cone-Beam CT and Micro CT

2020 ◽  
Author(s):  
Norliza Ibrahim ◽  
Azin Parsa ◽  
Bassam Hassan ◽  
Paul der Stelt ◽  
Siti Mazlipah Ismail ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Structural Parameters ◽  
Cone Beam Ct ◽  
Bone Microstructure ◽  
Imaging Systems ◽  
Cone Beam ◽  
Micro Ct ◽  
Trabecular Thickness ◽  
Trabecular Bone Microstructure ◽  
Trabecular Number

Abstract Objective The aim of this study was to compare the trabecular bone microstructures of anterior and posterior edentulous regions of human mandible using cone-beam CT (CBCT) and micro CT (µCT).Materials and methods Twenty volumes of interests consisting of six anterior and fourteen posterior edentulous regions were obtained from human mandibular cadavers. A CBCT system with a resolution of 80 µm (3D Accuitomo 170, J. Morita, Kyoto, Japan) and a µCT system with a resolution of 35 µm (SkyScan 1173, Kontich, Belgium) were used to scan the mandibles. Three structural parameters namely, trabecular number (Tb.N), trabecular thickness (Tb.Th), and trabecular separation (Tb.Sp) were analysed using CTAn software (v 1.11, SkyScan, Kontich, Belgium). For each system, the measurements obtained from anterior and posterior regions were tested using independent sample t-test. Subsequently, all measurements between systems were tested using paired t-test.Results In CBCT, all parameters of the anterior and posterior mandible showed no significant differences (p > 0.05). However, µCT showed a significant different of Tb.Th (p = 0.023) between anterior and posterior region. Regardless of regions, the measurements obtained using both imaging systems were significantly different (p ≤ 0.021) for Tb.Th and Tb.N.Conclusions The current study demonstrated that only the variation of Tb.Th between anterior and posterior edentulous region of mandible can be detected using micro CT. In addition, CBCT is less feasible than micro CT in assessing trabecular bone microstructures at both regions.

Comparison of linear and volumetric measurements obtained from periodontal defects by using cone beam-CT and micro-CT: an in vitro study

2018 ◽  
Vol 23 (5) ◽  
pp. 2235-2244 ◽  
Author(s):  
M. Ayşe Tayman ◽  
Kıvanç Kamburoğlu ◽  
Özlem Küçük ◽  
Funda S. Ö. Ateş ◽  
Meral Günhan
Keyword(s):  
Cone Beam Ct ◽  
In Vitro Study ◽  
Vitro Study ◽  
Cone Beam ◽  
Micro Ct ◽  
Volumetric Measurements
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