Open AccessEvaluation of Juxta-Apical Radiolucency as a Risk Factor for Inferior Alveolar Nerve Damage: A Cone-Beam Computed Tomography (CBCT) Study
Author(s) -
Leila Khojastepour,
Mohammad Ghasemi,
Shabnam Rasti,
Mahvash Hasani
Publication year - 2020
Publication title -
shiraz e medical journal.
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.195
H-Index - 10
ISSN - 1735-1391
DOI - 10.5812/semj.93330
Subject(s) - juxta , jar , medicine , radiodensity , inferior alveolar nerve , cone beam computed tomography , radiography , computed tomography , radiology , dentistry , anatomy , nuclear medicine , molar , mechanical engineering , engineering
Background: Injuries to the lingual and inferior alveolar nerves (IAN) through third molar surgery are common and complicated clinical problems. Juxta-apical radiolucency (JAR) is one of the new radiographic signs, suggestive of IAN damage. Objectives: This study aimed to assess the relationship between JAR and IAN and to determine its effects on the cortical plate. Methods: In this cross-sectional study, after evaluating an initial sample of 450 cases, the cone-beam computed tomography (CBCT) images of 20 patients with JAR were compared with those of 20 age-matched patients without JAR in the axial and multi-planar images. The relationship between JAR and IAN was evaluated, and thinning of the mandibular cortical plates was also investigated. Statistical analysis was performed using descriptive tests and chi-square test in SPSS version 23. Results: The relationship between JAR and IAN was statistically significant (P = 0.001). The cortical plates were perforated in 75% of cases with JAR as opposed to 45% of cases without JAR (P = 0.06). The relationship between the location of JAR and IAN was also significant (P = 0.004). Conclusions: Based on the present results, JAR was associated with IAN in most cases. Thinning of the cortical plates was observed in all cases of JAR.