Mandibular Canal Course and the Position of the Mental Foramen by Panoramic X-Ray in Chilean Individuals

Cartes, G; Garay, Ivonne; Deana, Naira Figueiredo; Navarro, Pablo; Alves, Nilton

doi:10.1155/2018/2709401

Cited by 15 publications

(9 citation statements)

References 43 publications

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“…The mandible forms the lower part of the face and is composed of the body and two rami ( 1 ). The posterior region of the mandible is highly vascularized due to the presence of the inferior alveolar bundles and the submandibular fossa, making it vulnerable during implant installation, third molar surgery, mandible osteotomy, or endodontic treatments ( 2 , 3 ).…”

Section: Introductionmentioning

confidence: 99%

Dentulous versus edentulous mandibles: CBCT-based morphometric assessment of mandibular canal and alveolar bone

et al. 2022

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Background Precise preoperative knowledge of the mandibular canal (MC) variations and alveolar bone dimensions are vital elements for a successful dental implant. Thus, this study aimed to describe the three-dimensional morphology of the MC and alveolar bone dimensions, followed by a comparison of the variables in edentulous mandibular posterior sides with contralateral dentulous sides among adult Chinese individuals. Such variations were also studied in relation to gender and age. Material and Methods Cone-beam computed tomography (CBCT) was used for the morphometric analysis of the MC and alveolar bone dimensions in this cross-sectional study that analyzed retrospectively gathered data. Records of 112 individuals (56 males and 56 females) who had one edentulous mandibular posterior side and one dentulous side were included in the analysis. The MC position, length (MCL), and diameter (MCD) along with superior bone height (SBH) and bone width (BW) of the alveolar bone ridge were assessed. Results The MCD was lower at first ( p = 0.016) and second ( p = 0.079) molars on the edentulous sides. The SBH, BW1mm, and BW3mm were significantly lower on the edentulous than dentulous sides ( p < 0.05). However, there were no significant differences in the MC position or MCL and the incidence of bifid MC for dentulous and edentulous sides. Gender was a significant parameter for MCL, SBH, and BW, while no significant differences were observed in all variables on both sides in relation to age. Conclusions The position of the MC remains relatively constant regardless of losing teeth or increasing age. However, the MC position and MCL show differences in relation to gender. Alveolar bone dimensions are highly affected by dentate status followed by gender. Therefore, such variations should be considered by surgeons for successful surgical procedures in the posterior mandible. Key words: Mandibular canal, Bifid mandibular canal, edentulous mandible, alveolar bone dimension.

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Section: Introductionmentioning

confidence: 99%

Dentulous versus edentulous mandibles: CBCT-based morphometric assessment of mandibular canal and alveolar bone

et al. 2022

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“…The course of the inferior alveolar nerve (IAN) and its relation to the teeth has been studied by several investigators [10][11][12]. The variation in the location of MF and pattern of inferior alveolar nerve canal (IANC) has been studied by various investigators in different populations [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A CBCT Based Three-Dimensional Assessment of Mandibular Posterior Region for Evaluating the Possibility of Bypassing the Inferior Alveolar Nerve While Placing Dental Implants

et al. 2020

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A high rate of nerve injury and related consequences are seen during implant placement in the posterior mandibular arch. An approach has been proposed to avoid nerve injury by dodging the inferior alveolar nerve (IAN) while placing an implant. A prospective study with a total of 240 CBCT (cone beam computed tomography) images of patients with three dentate statuses, namely, edentulous (group I), partially edentulous (group II) and dentate (group III) were included in the study. The nerve path tracing was done on CBCT images with On-demand 3D software. The three dimensions, i.e., the linear distance from the outer buccal cortical plate to the inferior alveolar nerve (BCPN), linear distance from the outer lingual cortical plate to the inferior alveolar nerve (LCPN) and linear distance from the midpoint of the alveolar crest to the inferior alveolar nerve (ACN) were assessed. The data were presented and analyzed between variables using one-way ANOVA and independent t-test in SPSS version 21.LCPN of the right 1st premolar region (p < 0.05) was significantly different among the groups with edentulous subjects recorded with the minimum value (6.50 ± 1.20 mm). Females were found to have significantly (p < 0.05) less available bone (6.03 ± 1.46 mm) on the right side of the mandibular jaw compared to males in edentulous group of patients. On comparing age groups for partially edentulous subjects, LCPN of the right 1st premolar region had significantly (p < 0.05) less available bone (6.03 ± 0.38 mm) in subjects with age ≥54 years. The IAN follows a lingual course in the molar region and later flips to the buccal side in the premolar region. The LCPN dimension in the 1st and 2nd premolar region was found to be more than 6 mm irrespective of age, gender and side of the jaw. Thus, it can be considered as a suitable site for placing implants while bypassing the IAN with CBCT assessment remaining as the mainstay in the pre-surgical phase.

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“…From there, it runs obliquely downward and forward in the ramus and then travels horizontally forward and ends at the mental foramen. 3 Previous sexual dimorphism studies on dry mandibles, cadavers, and radiographic images have indicated that the course of the inferior alveolar canal varies with sex. [4][5][6] Radiographic imaging is remarkably useful as an aid for sex determination, as it can provide a variety of morphological information noninvasively.…”

Section: Introductionmentioning

confidence: 99%

Sex determination by radiographic localization of the inferior alveolar canal using cone-beam computed tomography in an Egyptian population

2020

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Purpose: The purpose of this study was to evaluate possible differences in the location of the inferior alveolar canal in male and female Egyptians. Materials and Methods: This cross-sectional retrospective study involved the evaluation of 210 CBCT scans of Egyptian individuals (18-70 years old). The inferior alveolar canal was localized by measuring 8 linear dimensions: 2 for the vertical localization of the mental foramen (superior and inferior to the mental foramen), 4 at the first molar bifurcation for the vertical and horizontal localization of the inferior alveolar canal (superior, inferior, buccal, and lingual to the inferior alveolar canal), and 2 for the horizontal localization of the mandibular foramen (anterior and posterior to the mandibular foramen). The measurements were statistically analyzed via comparative analysis, stepwise logistic regression, and receiver operating characteristic (ROC) curve analysis. Results: Six of the 8 measured distances differed to a statistically significant extent between the sexes. Regression analysis suggested a logistic function with a concordance index of 84%. The diagnostic accuracy capabilities of the linear measurements as sex predictors were calculated using ROC analysis, and the 6 best predictors for sex determination were selected and ranked from highest to lowest predictive power. Moreover, combining these 6 predictors increased the predictive power to 84%. Conclusion:The location of the inferior alveolar canal in the Egyptian population varies significantly by sex; accordingly, this anatomic landmark could be used as a reliable indicator of sexual dimorphism.

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Mandibular Canal Course and the Position of the Mental Foramen by Panoramic X-Ray in Chilean Individuals

Cited by 15 publications

References 43 publications

Dentulous versus edentulous mandibles: CBCT-based morphometric assessment of mandibular canal and alveolar bone

Dentulous versus edentulous mandibles: CBCT-based morphometric assessment of mandibular canal and alveolar bone

A CBCT Based Three-Dimensional Assessment of Mandibular Posterior Region for Evaluating the Possibility of Bypassing the Inferior Alveolar Nerve While Placing Dental Implants

Sex determination by radiographic localization of the inferior alveolar canal using cone-beam computed tomography in an Egyptian population

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