scholarly journals Accuracy of cone-beam CT in detecting vertical root fractures in teeth with post-endodontic restorations: an in vitro study

2021 ◽  
Vol 43 ◽  
pp. e55832
Author(s):  
Fernanda Chiguti Yamashita ◽  
Amanda Lury Yamashita ◽  
Irma Milena Menck Romanichen ◽  
Elen de Souza Tolentino ◽  
Sérgio Sábio ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
In Vitro Study ◽  
Cone Beam ◽  
Control Group ◽  
Endodontically Treated Teeth ◽  
Kappa Value ◽  
Diagnostic Capacity ◽  
Root Fractures ◽  
Sensitivity Specificity

The aim of this study was to evaluate the accuracy of cone-beam CT (CBCT) for the detection of artificially created vertical root fractures (VRF) in extracted teeth restored with metallic (MP) and fiberglass (FGP) posts. After root canal obturation, 60 extracted human premolars were scanned by using the highest-resolution settings of a CBCT unit. The prepared roots were randomly divided into three groups: group C (control group): non-restored and non- endodontically treated teeth (n = 20); group MP (n = 20); group FGP (n = 20). In all groups, 10 teeth were artificially fractured. Two external and independent observers blindly recorded the presence or absence of VRF. Sensitivity, specificity, accuracy, intra- and interobserver agreement were calculated. Kappa value for inter- and intraobserver agreement was 0.82 and 0.84 respectively, demonstrating good agreement. The highest values for sensitivity (0.80 - 0.90), specificity (1.00) and accuracy (0.90 - 0.95) were found in the control group. The teeth with FGP restoration presented the lowest sensitivity (0.30 - 0.50) and accuracy (0.60 - 0.65) values. Both examiners had a good performance in the diagnosis of fractures in teeth with MP, with accuracy ranging between 0.85 - 0.90. The presence of MP did not influence accuracy; however, the presence of FGP reduced the diagnostic capacity of CBCT.

scholarly journals Comparison of MTA, CEM Cement, and Biodentine as Coronal Plug during Internal Bleaching: An In Vitro Study

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Paridokht Zarean ◽  
Parichehr Zarean ◽  
Arash Ravaghi ◽  
Maryam Zare Jahromi ◽  
Mitra Sadrameli
Keyword(s):  
Root Resorption ◽  
Mineral Trioxide Aggregate ◽  
In Vitro Study ◽  
Negative Control ◽  
Vitro Study ◽  
Control Group ◽  
Endodontically Treated Teeth ◽  
Cem Cement ◽  
Significant Difference

Background. Internal bleaching is a choice of treatment in discolored endodontically treated teeth. Cervical root resorption is one of the important complications of this treatment. A suggested procedure to prevent this type of resorption is using a coronal barrier under the bleaching materials. The aim of the study was to compare the microleakage of mineral trioxide aggregate (MTA), calcium-enriched mixture (CEM) cement, and Biodentine. Materials and Methods. In this in vitro study, a total of 60 single canal incisors were included. They were randomly divided into three experimental groups (n = 16), one positive control group (n = 6), and one negative control group (n = 6). Coronal portion of the canals in the experimental groups was sealed with 3 mm of MTA, CEM cement, or Biodentine as a coronal barrier. After 3 days, specimens were bleached. A fresh Enterococcus faecalis suspension was added to the samples. The culture tubes were observed for 45 days, and the daily turbidity was recorded. Statistical analysis was accomplished by the Kaplan–Meier test and SPSS 22. Results. All positive samples showed turbidity, whereas none of the negative samples allowed bacterial leakage. Results showed no significant difference between MTA, CEM cement, and Biodentine groups. ( P value = 0.304, 0.695, and 0.217). The bacterial microleakage for the two groups also did not show significant differences. Conclusions. CEM cement and Biodentine showed promising results as coronal plug, and clinical studies are needed to test these materials with MTA for avoiding microleakage in internal bleaching treatment.

Comparison of intraoral radiography and cone-beam computed tomography for the detection of vertical root fractures: an in vitro study

2012 ◽  
Vol 29 (1) ◽  
pp. 6-12 ◽  
Author(s):  
Kaan Gunduz ◽  
Hakan Avsever ◽  
Kaan Orhan ◽  
Peruze Çelenk ◽  
Bilal Ozmen ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
In Vitro Study ◽  
Vitro Study ◽  
Cone Beam ◽  
Intraoral Radiography ◽  
Root Fractures
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