scholarly journals Use of the cone-beam computed tomography-endodontic radiolucency index for determination of lesion extension in periapical periodontitis

2021 ◽  
Author(s):  
Sanaa Shafshak ◽  
Faiz Alsubaie ◽  
Faisal Alzamil ◽  
Linah Alzughaibi ◽  
Meshal Alhaqbani ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cortical Bone ◽  
Cone Beam Computed Tomography ◽  
Clinical Symptoms ◽  
Root Surface ◽  
Bone Involvement ◽  
Cone Beam ◽  
Slice Thickness ◽  
Periodontal Tissues ◽  
Periapical Periodontitis

Background: Periapical periodontitis is caused by extension of necrotic pulp tissue into the periodontal ligament area. cone-beam computed tomography (CBCT) facilitates better diagnosis for periapical periodontitis, especially in the absence of clinical symptoms. This study aims to use cone-beam computed tomography-endodontic radiolucency index (CBCT-ERI) to determine the extension of periapical periodontitis in post-graduate clinics of Riyadh Elm university (REU) and to record the extension of periapical periodontitis in the coronal direction along the root surface and evaluate the degree of cortical bone involvement associated with periapical radiolucency.Methods: CBCT images for patients treated at the endodontic clinics of REU were selected for this retrospective observational study. Images were examined after inter-examiner calibrations under the same magnification, slice thickness, and resolution and the measurements were analyzed statistically.Results: The first permanent molars were the most frequently affected by periapical periodontitis, followed by the second molars. The majority of lesions were graded with a score of 6 in length and width according to CBCT-ERI.Conclusions: The use of CBCT-ERI revealed extensive involvement of periodontal tissues around the apices of the roots of the examined teeth. Coronal extension of periapical periodontitis was observed along the root surface. The axial view accurately detected cortical bone involvement, including thinning of the cortical bone, which was the most common manifestation (11.76%). Apical radiolucency was observed most commonly in the first molars.

Anthropometric Analysis of the Human Mandibular Cortical Bone as Assessed by Cone-Beam Computed Tomography

2009 ◽  
Vol 67 (3) ◽  
pp. 491-500 ◽  
Author(s):  
Denise Swasty ◽  
Janice S. Lee ◽  
John C. Huang ◽  
Koutaro Maki ◽  
Stuart A. Gansky ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cortical Bone ◽  
Cone Beam Computed Tomography ◽  
Cone Beam

scholarly journals Accuracy of cone-beam computed tomography in defining spatial relationships between third molar roots and inferior alveolar nerve

2016 ◽  
Vol 10 (04) ◽  
pp. 454-458 ◽  
Author(s):  
Roberto Pippi ◽  
Marcello Santoro ◽  
Ferdinando D'Ambrosio
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Morphology ◽  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Root Surface ◽  
Cone Beam ◽  
Spatial Relationships ◽  
Third Molars ◽  
The Third

ABSTRACT Objective: Cone-beam computed tomography (CBCT) has been proposed in surgical planning of lower third molar extraction. The aim of the present study was to assess the reliability of CBCT in defining third molar root morphology and its spatial relationships with the inferior alveolar nerve (IAN). Materials and Methods: Intraoperative and radiographic variables of 74 lower third molars were retrospectively analyzed. Intraoperative variables included IAN exposure, number of roots, root morphology of extracted third molars, and presence/absence of IAN impression on the root surface. Radiographic variables included presence/absence of the cortex separating IAN from the third molar roots on CBCT examination, number of roots and root morphology on both orthopantomography (OPG) and CBCT. The statistical association between variables was evaluated using the Fisher's exact test. Results: In all cases of intraoperative IAN exposure, the cortex appeared discontinuous on CBCT images. All cases, in which the cortical bone was continuous on CBCT images, showed no association with nerve exposure. In all cases in which nerve impression was identified on the root surface, the IAN cortex showed interruptions on CBCT images. No nerve impression was identified in any of the cases, in which the cortex appeared continuous on CBCT images. CBCT also highlighted accessory roots and apical anomalies/curvatures, not visible on the OPG. Conclusions: CBCT seems to provide reliable and accurate information about the third molar root morphology and its relationship with the IAN.

scholarly journals Comparative Evaluation of Cortical Bone Anatomy of Mandibular Buccal Shelf for Mini Implant Placement in Different Facial Divergence: A Cone Beam Computed Tomography Study

2020 ◽  
Vol 54 (4) ◽  
pp. 325-331
Author(s):  
Kalyani Trivedi ◽  
Bharvi K Jani ◽  
Sagar Hirani ◽  
Mansi V Radia
Keyword(s):  
Computed Tomography ◽  
Cortical Bone ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Bone Surface ◽  
Bone Thickness ◽  
Second Molar ◽  
Cortical Bone Thickness ◽  
Implant Placement ◽  
Alveolar Crest

Aim: The purpose of this study was to use measurements from cone beam computed tomography scans to quantify the cortical bone thickness of mandibular buccal shelf region and preferable site for buccal shelf implant placement in 10 hyperdivergent and 10 hypodivergent patients. Method: 20 cone beam computed tomographies were equally divided based on divergence. 6 sites were examined: mesial of first molar (6M), middle of first molar (6Mi), interdental between the first and second molar (Id), mesial of second molar (7M), middle of second molar (7Mi), and distal of second molar (7D). The study quantified the mandibular buccal shelf relative to its angle of slope, the cortical bone thickness measured perpendicular to the bone surface, the amount of cortical bone 30° angle to the bone surface. The cortical bone thickness was measured perpendicular and at a 30° angle at 3, 5, and 7 mm from the alveolar crest. Result: Significant change is seen at the buccal shelf slope at 6M ( P = .001) and further increase in this angle till 7D ( P = .003). Mean amount of cortical bone for hyperdivergent group at 7D is 4.77 ± 0.68 mm and for hypodivergent group is 3.86 ± 0.70 mm. Statistically significant differences were noted at insertion site at 90° and 30° for both groups at 3, 5, and 7 mm from the alveolar crest. Conclusion: Preferable site for buccal shelf implant placement is distal to the mandibular second molar. The maximum amount of cortical bone is found distal to the second molar 7 mm vertically from alveolar crest when the buccal shelf implant is placed at 30° angulation for hyperdivergent group.

scholarly journals Influence of basis images and skull position on evaluation of cortical bone thickness in cone beam computed tomography

2017 ◽  
Vol 123 (6) ◽  
pp. 707-713 ◽  
Author(s):  
Monikelly do Carmo Chagas Nascimento ◽  
Solange Maria de Almeida Boscolo ◽  
Francisco Haiter-Neto ◽  
Emanuela Carla dos Santos ◽  
Ivo Lambrichts ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cortical Bone ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Bone Thickness ◽  
Cortical Bone Thickness

scholarly journals Root surface areas of maxillary permanent teeth in anterior normal overbite and anterior open bite assessed using cone-beam computed tomography

2017 ◽  
Vol 47 (4) ◽  
pp. 241 ◽  
Author(s):  
Piyadanai Suteerapongpun ◽  
Supassara Sirabanchongkran ◽  
Tanapan Wattanachai ◽  
Patiyut Sriwilas ◽  
Dhirawat Jotikasthira
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Surface ◽  
Open Bite ◽  
Cone Beam ◽  
Permanent Teeth ◽  
Anterior Open Bite ◽  
Surface Areas
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