Defect morphology, bone thickness, exposure settings and examiner experience affect the diagnostic accuracy of standardized digital periapical radiographic images but not of cone beam computed tomography in the detection of peri‐implant osseous defects: An in vitro study

2019 ◽  
Vol 46 (12) ◽  
pp. 1294-1302 ◽  
Author(s):  
George Pelekos ◽  
Judy M.N. Tse ◽  
Dominic Ho ◽  
Maurizio S. Tonetti
Keyword(s):  
Computed Tomography ◽  
Diagnostic Accuracy ◽  
Cone Beam Computed Tomography ◽  
In Vitro Study ◽  
Cone Beam ◽  
Bone Thickness ◽  
Radiographic Images ◽  
Osseous Defects ◽  
Defect Morphology

Accuracy of detecting and measuring buccal bone thickness adjacent to titanium dental implants—a cone beam computed tomography in vitro study

2018 ◽  
Vol 126 (5) ◽  
pp. 432-438 ◽  
Author(s):  
Gabriela Salatino Liedke ◽  
Rubens Spin-Neto ◽  
Heloisa Emilia Dias da Silveira ◽  
Lars Schropp ◽  
Andreas Stavropoulos ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Dental Implants ◽  
Cone Beam Computed Tomography ◽  
In Vitro Study ◽  
Vitro Study ◽  
Cone Beam ◽  
Bone Thickness ◽  
Titanium Dental Implants

scholarly journals Effect of Amalgam Restorations and Operation Parameters on Diagnostic Accuracy of Caries Detection Using Cone Beam Computed Tomography: An In Vitro Study

Scanning ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Mohamed Mehanny ◽  
Rahaf A. AlMohareb ◽  
Marcel Noujeim
Keyword(s):  
Computed Tomography ◽  
Diagnostic Accuracy ◽  
Cone Beam Computed Tomography ◽  
In Vitro Study ◽  
Vitro Study ◽  
Detection Sensitivity ◽  
Cone Beam ◽  
Amalgam Restorations ◽  
Approximal Caries

This study was aimed to evaluate the diagnostic accuracy of cone beam computed tomography (CBCT) in detecting noncavitated approximal caries at different exposure parameters and to assess the impact of artifacts generated by amalgam restorations in an in vitro study. Seventy-eight approximal surfaces of extracted teeth were prepared with intentionally created noncavitated approximal caries of different depths; then, thirteen teeth with class 2 amalgam restorations were replaced with one tooth with normal surfaces in each block. CBCT volumes for all teeth were acquired using a Planmeca Promax 3D Mid imaging unit before and after placement of amalgam teeth, with different exposure parameters at low and high definition, both applying and omitting the Metal Artifact Reduction algorithm. The lesions were classified into four groups with regard to lesion extension. All teeth underwent histological analysis as gold standard. The histological examination showed that the distribution of lesions was as follows: 39.8% sound, enamel lesions of less and more than half the enamel thickness each 17.8%, and 24.6% dentin lesions. The detection sensitivity was found to be 0.972%, and specificity was found to be 0.937% for the detection of noncavitated approximal initial enamel and dentin caries. The highest diagnostic accuracy was found when using operating parameters of 90 kVp, 8 mA, and high resolution (75 μm) with nonamalgam teeth; all modes showed statistically significant higher AUCs than mode 2 (80 kVp, 7 mA, and 75 μm). However, for teeth with amalgam restorations, the highest accuracy was obtained at low resolution (200 μm) with the other parameters kept the same. It could be concluded that increasing the peak voltage and current improves diagnostic accuracy for the detection of noncavitated approximal caries. Moreover, diagnostic accuracy was found to be higher upon using high spatial resolution when diagnosing caries without adjacent amalgam restorations. There is a statistically significant difference with and without amalgam with respect to all modes.

scholarly journals Comparative Evaluation of The Efficacy Of Rotary file system (Kedo-S) Vs Hand K-Files In Root Canal Preparation Of Primary Teeth Using Cone Beam Computed Tomography (CBCT) - An In Vitro Study

2019 ◽  
Vol 22 (2) ◽  
pp. 197-202
Author(s):  
Abhinaya Srinivas ◽  
LGanesh Jeevanandan ◽  
Lavanya Govindaraju ◽  
Erulappan Muthu Ganapathi Subramanian
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Primary Teeth ◽  
File System ◽  
In Vitro Study ◽  
Cone Beam ◽  
Root Canal Preparation ◽  
Group I ◽  
Shaping Ability

Objective: To evaluate the efficacy of rotary Kedo-S and hand K-files in shaping ability in primary canines using cone beam computed tomography. Materials and Methods: Thirty extracted primary maxillary and mandibular canines were selected. Using cone beam computed tomography the teeth were scanned before instrumentation. In Group I, the teeth were prepared using stainless steel K file up to the size of 40. In the Group II teeth, U1 size Kedo-S rotary file was used in crown down technique. The instrumented teeth were scanned again with cone beam computed tomography and the images were compared. Results: The canal taper was more conical for rotary Kedo-S files as compared to K-files, which was statistically significant. Conclusion:  Canal preparation with Rotary files resulted in more conical canals when compared to manual instrumentation in primary teeth that contributes to more uniform obturation.KeywordsCBCT; Hand K-files; Kedo-S file system; Primary teeth; Pulpectomy; Rotary instrumentation.

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