Cone-beam Computed Tomography Volumetric Analysis and Comparison of Dentin Structure Loss after Retrieval of Separated Instrument by Using Ultrasonic EMS and ProUltra Tips

2016 ◽  
Vol 42 (11) ◽  
pp. 1693-1698 ◽  
Author(s):  
Himani Garg ◽  
Mandeep S. Grewal
2020 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Max-Philipp Lentzen ◽  
Ali-Farid Safi ◽  
Maximilian Riekert ◽  
Veerle Visser-Vandewalle ◽  
Andrea Grandoch ◽  
...  

2010 ◽  
Vol 80 (1) ◽  
pp. 160-166 ◽  
Author(s):  
Yi Liu ◽  
Raphael Olszewski ◽  
Emanuel Stefan Alexandroni ◽  
Reyes Enciso ◽  
Tianmin Xu ◽  
...  

Abstract Objective: To determine the accuracy of volumetric analysis of teeth in vivo using cone-beam computed tomography (CBCT). Materials and Methods: The physical volume (Vw) of 24 bicuspids extracted for orthodontic purposes (16 were imaged with the I-CAT and 8 with the CB MercuRay) were determined using the water displacement technique. Corresponding pretreatment CBCT image data were uploaded into Amira 4.0 for segmentation and radiographic volume (Va). All measurements were performed twice by two observers. The statistical difference between Vw and Va was assessed using a paired t-test. The intraobserver and interobserver reliability were determined by calculating Pearson correlation coefficients and intraclass correlation coefficients. Results: The overall mean Vw of teeth specimens was 0.553 ± 0.082 cm3, while the overall mean Va was 0.548 ± 0.079 cm3 (0.529 ± 0.078 cm3 for observer 1 and 0.567 ± 0.085 cm3 for observer 2). There were statistically significant differences between Va and Vw (P < .05). Between observer 1 and observer 2, Va measurements were statistically significantly different (P < .05). The interobserver and intraobserver correlation coefficient for Vw was high. Lastly, surface smoothing reduced the volume by 3% to 12%. Conclusions: In vivo determination of tooth volumes from CBCT data is feasible. The measurements slightly deviate from the physical volumes within −4% to 7%. Smoothing operations reduce volume measurements. Currently, no requirements for accuracy of volumetric determinations of tooth volume have been established.


2012 ◽  
Vol 81 (8) ◽  
pp. 1812-1816 ◽  
Author(s):  
Mehmet Bayram ◽  
Saadettin Kayipmaz ◽  
Ömer Said Sezgin ◽  
Murat Küçük

2020 ◽  
Vol 79 (3) ◽  
pp. 557-562
Author(s):  
M. Gulec ◽  
M. Tassoker ◽  
G. Magat ◽  
B. Lale ◽  
S. Ozcan ◽  
...  

2020 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Max-Philipp Lentzen ◽  
Matthias Zirk ◽  
Maximilian Riekert ◽  
Johannes Buller ◽  
Matthias Kreppel

2007 ◽  
Vol 34 (11) ◽  
pp. 985-990 ◽  
Author(s):  
Jimoh Olubanwo Agbaje ◽  
Reinhilde Jacobs ◽  
Frederik Maes ◽  
Katleen Michiels ◽  
Daniel van Steenberghe

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