Characteristics of Mandibular Canal Branches Related to Nociceptive Marker

2021 ◽  
pp. 002203452097963
Author(s):  
M. Takiguchi ◽  
I. Sato ◽  
Z.L. Li ◽  
H. Miyaso ◽  
S. Kawata ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Principal Component Analysis ◽  
Dental Treatment ◽  
Morphological Characteristics ◽  
Principal Component ◽  
Mandibular Canal ◽  
Cone Beam ◽  
Clock Model ◽  
Branch Group ◽  
Calcitonin Gene

It is difficult to correlate the direction of mandibular canal branches (MCBs) with altered sensation in dental treatments. In contrast, calcitonin gene–related peptide (CGRP) is related to vasodilation, bone formation, and the interaction with the peripheral nervous system. Therefore, we investigated the detailed morphological characteristics of MCBs using cone-beam computed tomography (CBCT) and observation of the CGRP distribution around the MCB. The MCB measurements were evaluated using principal component analysis (PCA) to identify morphological correlations. A total of 168 sides of mandibles from 84 cadavers were analyzed in this study. Most of the MCBs were primarily in the direction of the clock model from X to XI in sagittal sections and XII to I in coronal sections of the mandible. The structure of the MCB was divided into the fine canal branch (60.4%, 223/369), partial branch (24.4%, 90/369), and no canal branch (15.2%, 56/369). PCA indicated that the measurement element with the MCB and its structures were correlated in contrast to tooth factors. Positive CGRP reactions were clearly observed in the no-canal branch group compared to other groups. These data provide useful suggestions for MCB dynamics and information for clinical dental treatment.

scholarly journals Radiographic and anatomic investigation on the prevalence of bifid mandibular canals in cone beam computed tomography scans

2018 ◽  
pp. 54-58
Author(s):  
C. Casagrande ◽  
S. G. Orestes ◽  
A. D. Schroder ◽  
A. A. De-Lima ◽  
A. Franco ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Dental Treatment ◽  
Anatomic Variation ◽  
Mandibular Canal ◽  
Cone Beam ◽  
Anesthetic Techniques ◽  
Chi Square ◽  
Computed Tomography Scans ◽  
Chi Square Test

Background. Knowing the radiologic anatomy of the mandibular canal is essential to perform optimal anesthetic techniques in dentistry, especially in endodontic and surgical procedures. Bifid mandibular canals figure as anatomic variations that may hamper dental anesthesia and lead to surgical accidents.Objective. This study aims to investigate the prevalence of bifid mandibular canals in cone beam computed tomography (CBCT) images of patients under dental treatment.Material and methods. The sample consisted of 700 patients (448 females and 252 males) under dental treatment. CBCT images taken from each patient for dental treatment purposes were analyzed retrospectively in order to search for bifid mandibular canals. The detected bifid mandibular canals were classified according to their morphological arrangement and the prevalence of this anatomic variation was tested for association with patients’ sex using Pearson’s Chi-square test (2).Results. The prevalence rate of bifid mandibular canals reached 2% (n=14). Mandibular canals with an additional bifurcation towards the anterior region of the mandibular ramus were the most prevalent (100%). Lack of statistical association was observed between the occurrence of bifid mandibular canals and patients’ sex ( p >0.05).Conclusion. Despite uncommon, bifid mandibular canals may occur. Dentists must be aware of this anatomic variation to perform safely and optimally in the clinical routine.

Principal Component Analysis Based Dynamic Cone Beam X-Ray Luminescence Computed Tomography: A Feasibility Study

2019 ◽  
Vol 38 (12) ◽  
pp. 2891-2902 ◽  
Author(s):  
Huangsheng Pu ◽  
Peng Gao ◽  
Yang Liu ◽  
Junyan Rong ◽  
Feng Shi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Principal Component Analysis ◽  
Feasibility Study ◽  
Principal Component ◽  
Component Analysis ◽  
Cone Beam ◽  
X Ray

Position of the mandibular canal before and after bilateral sagittal split ramus osteotomy: a cone beam computed tomography study

2021 ◽  
Author(s):  
Fernanda Chiguti Yamashita ◽  
Lilian Cristina Vessoni Iwaki ◽  
Amanda Lury Yamashita ◽  
Elen de Souza Tolentino ◽  
Vinicius Eduardo de Oliveira Verginio ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Mandibular Canal ◽  
Cone Beam ◽  
Sagittal Split Ramus Osteotomy ◽  
Before And After

scholarly journals Assessment of the anterior loop of the mandibular canal: A study using cone-beam computed tomography

2016 ◽  
Vol 46 (2) ◽  
pp. 69 ◽  
Author(s):  
Eduarda Helena Leandro do Nascimento ◽  
Maria Luiza dos Anjos Pontual ◽  
Andréa dos Anjos Pontual ◽  
Danyel Elias da Cruz Perez ◽  
José Natal Figueiroa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Mandibular Canal ◽  
Cone Beam ◽  
Anterior Loop

scholarly journals Evaluation of the Relationship between Mandibular Third Molar and Mandibular Canal by Different Algorithms of Cone-beam Computed Tomography

2014 ◽  
Vol 15 (6) ◽  
pp. 740-745
Author(s):  
Mojdeh Mehdizadeh ◽  
Navid Ahmadi ◽  
Mahsa Jamshidi
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Mandibular Canal ◽  
Cross Sectional Study ◽  
Cone Beam ◽  
Cross Sectional ◽  
Mandibular Third Molar ◽  
The Relationship

ABSTRACT Objectives Exact location of the inferior alveolar nerve (IAN) bundle is very important. The aim of this study is to evaluate the relationship between the mandibular third molar and the mandibular canal by cone-beam computed tomography. Study design This was a cross-sectional study with convenience sampling. 94 mandibular CBCTs performed with CSANEX 3D machine (Soredex, Finland) and 3D system chosen. Vertical and horizontal relationship between the mandibular canal and the third molar depicted by 3D, panoramic reformat view of CBCT and cross-sectional view. Cross-sectional view was our gold standard and other view evaluated by it. Results There were significant differences between the vertical and horizontal relation of nerve and tooth in all views (p < 0.001). Conclusion The results showed differences in the position of the inferior alveolar nerve with different views of CBCT, so CBCT images are not quite reliable and have possibility of error. How to cite this article Mehdizadeh M, Ahmadi N, Jamshidi M. Evaluation of the Relationship between Mandibular Third Molar and Mandibular Canal by Different Algorithms of Cone-beam Computed Tomography. J Contemp Dent Pract 2014;15(6):740-745.

scholarly journals Reliability of panoramic radiography in predicting proximity of third molars to the mandibular canal: A comparison using cone-beam computed tomography

2021 ◽  
Vol 51 (1) ◽  
pp. 9
Author(s):  
Willy James Porto Nunes ◽  
Aline Lisboa Vieira ◽  
Letícia Drumond de Abreu Guimarães ◽  
Carlos Eduardo Pinto de Alcântara ◽  
Francielle Silvestre Verner ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Panoramic Radiography ◽  
Mandibular Canal ◽  
Cone Beam ◽  
Third Molars

scholarly journals Inferior alveolar nerve paraesthesia after overfilling into the mandibular canal, confirmed by cone-beam computed tomography: a case report

2021 ◽  
Vol 24 (2) ◽  
Author(s):  
Claudemir de Souza Júnior ◽  
Ricardo Machado ◽  
Renee Ashley Batts ◽  
Lucas da Fonseca Roberti Garcia
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Inferior Alveolar Nerve ◽  
Mandibular Canal ◽  
Cone Beam ◽  
Filling Material ◽  
Mandibular Molar ◽  
Patient Reported

The filling material should be restricted to the root canal, and not extend to the periradicular tissues. Overextension occurs when there is an overflow of gutta-percha and sealer, whereas overfilling refers to the overflow only of sealer beyond the apical foramen. Both may cause several negative clinical consequences. Nevertheless, an accurate diagnosis of where they occurred cannot always be performed by conventional radiographic examination, because of the two-dimensional aspect of the image. This paper describes a clinical case of labiomandibular paraesthesia after overfilling into the mandibular canal (MC), as diagnosed by cone-beam computed tomography (CBCT), later used to perform the treatment planning. A 34-year-old Caucasian female patient sought a private dental clinic complaining of pain in the right mandibular posterior region. After taking the anamnesis and performing clinical and radiographic exams, the patient was diagnosed with pulp necrosis in the second right mandibular molar, and underwent root canal treatment. The final radiography showed overextension or overfilling, probably into the MC. About 2 hours after the procedure, the patient reported paraesthesia of her lower right lip and chin. A CBCT confirmed a small overfilling into the MC. For this reason, vitamin B12 was prescribed as the first treatment option. After 7 days, the patient reported a significant decrease in paraesthesia, and was completely normal after 15 days. This case report shows that CBCT is an effective radiographic diagnostic tool that can be used as an alternative in clinical cases of labiomandibular paraesthesia caused by overextension or overfilling.   Keywords Endodontic treatment; Overfilling; Paraesthesia; Conebeam computed tomography.

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