scholarly journals Image and surgery-related costs comparing cone beam CT and panoramic imaging before removal of impacted mandibular third molars

2014 ◽  
Vol 43 (6) ◽  
pp. 20140001 ◽  
Author(s):  
L B Petersen ◽  
K R Olsen ◽  
J Christensen ◽  
A Wenzel
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Third Molars ◽  
Panoramic Imaging ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Diagnostic accuracy of panoramic radiography, stereo-scanography and cone beam CT for assessment of mandibular third molars before surgery

2013 ◽  
Vol 71 (6) ◽  
pp. 1391-1398 ◽  
Author(s):  
Louise Hauge Matzen ◽  
Jennifer Christensen ◽  
Hanne Hintze ◽  
Søren Schou ◽  
Ann Wenzel
Keyword(s):  
Diagnostic Accuracy ◽  
Panoramic Radiography ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Third Molars ◽  
Mandibular Third Molars

scholarly journals Thickness of Buccal and Lingual Alveolar Bone Plates According to the Position of Impacted Mandibular Third Molars on Cone-Beam Computed Tomography Scans

2019 ◽  
Author(s):  
Seyed Alireza Parhiz ◽  
Pegah Bakhtiary ◽  
Farzaneh Mosavat ◽  
Mohammad Javad Kharazifard
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Plate Thickness ◽  
Bone Plates ◽  
Cone Beam ◽  
Surgical Removal ◽  
Third Molars ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Objectives: This study sought to assess the thickness of buccal and lingual alveolar bone plates according to the position of impacted mandibular third molars on cone-beam computed tomography (CBCT) scans. Materials and Methods: Eighty-four CBCT scans of impacted mandibular third molars were evaluated in this retrospective study. All images had been obtained by ProMax 3D CBCT system with the exposure settings of 78 kVp, 12 mA, 16 s time, 0.2 mm voxel size and 10 × 9 cm field of view. The impaction angle of teeth and the thickness of buccal and lingual cortical plates were determined on images by drawing lines in the anterior, middle, posterior, superior, central and inferior regions. Thickness of bone plates was analyzed according to the position of impacted molars relative to the buccal and lingual plates using the Student t-test and relative to the second molars using one-way ANOVA and Tukey’s test. Results: In the buccolingual direction, the buccal plate thickness was maximum in lingual position followed by central position, and minimum in buccal position of the teeth. The lingual plate thickness was minimum in horizontal and distoangular positions and maximum in the mesioangular position of impacted teeth. Conclusion: Risk of lingual plate preformation is higher in surgical removal of impacted third molars with distoangular and horizontal positions. Thus, further attention must be paid by the surgeons to such cases.

scholarly journals Comparison of panoramic radiography and cone beam CT in the assessment of juxta-apical radiolucency

2018 ◽  
Vol 47 (1) ◽  
pp. 20170198 ◽  
Author(s):  
Eduarda Helena Leandro Nascimento ◽  
Anne Caroline Costa Oenning ◽  
Bernardo Barbosa Freire ◽  
Hugo Gaêta-Araujo ◽  
Francisco Haiter-Neto ◽  
...  
Keyword(s):  
Panoramic Radiography ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Cortical Plate ◽  
Multiple Logistic Regression ◽  
Third Molars ◽  
Factors Associated ◽  
The Mean ◽  
Mandibular Third Molars ◽  
Cortical Involvement

Objectives: To compare the performance of panoramic radiography (PAN) and cone beam CT (CBCT) in the detection of juxta-apical radiolucency (JAR), as well as to investigate, in CBCT images, if there are factors associated with the detection of JAR on PAN. Methods: Two oral radiologists assessed the presence of JAR in PAN and CBCT images of 175 individuals (308 mandibular third molars). The cortical plates involvement and the JAR size and location were assessed on CBCT to evaluate if these factors were related to JAR detection on PAN. McNemar’s test and multiple logistic regression were performed. Results: PAN and CBCT differed significantly in the detection of JAR (p = 0.001). On PAN, JAR was identified on 24% of the patients while on CBCT its detection increased to 32.6%. JAR was detected only on CBCT and only on PAN in 26 and 7 cases, respectively. Distal/mesial surfaces of dental roots were where JAR was mostly located (84.5%), cortical thinning was found in 59.2% of cases and the mean (SD) of JAR size was 5.03 (±1.8) mm. However, these factors were not associated with JAR detection on PAN (p > 0.05). On the other hand, the location of the cortical involvement (if buccal or lingual) was associated with JAR detection on PAN, which was more detectable when the thinning was on buccal cortical. Conclusions: Juxta-apical radiolucency is more often detected on CBCT than on PAN. JAR detection on PAN was improved when it was related to the buccal cortical plate of the mandible.

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