ArticleDiagnostics (Basel, Switzerland)2021
Comparison of Digital OPG and CBCT in Assessment of Risk Factors Associated with Inferior Nerve Injury during Mandibular Third Molar Surgery.
Article in Diagnostics (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 26 citations in OpenAlex.
- The Impact of Cone Beam Computed Tomography on Surgical Decision-Making and Risk Assessment in Mandibular Third Molar Extractions: A Prospective Observational Diagnostic Study.Tomography (Ann Arbor, Mich.) · 2026Observational
- Prevalence and Radiographic Patterns of Impacted Third Molars in a Portuguese Population: A Retrospective Orthopantomography (OPG) and Cone-Beam Computed Tomography (CBCT) Study.Journal of clinical medicine · 2026Article
- Comparative Analysis of Diagnostic Accuracy of OPG and CBCT in the Evaluation of Impacted Mandibular third Molar Proximity to the Mandibular Canal.Current medical imaging · 2026Article
- Key factors in mandibular third molar surgery: a comprehensive view of their prevalence and interrelationships.The Saudi dental journal · 2025Article
- Prevalence and radiographic features of Haller cells: A systematic review.Imaging science in dentistry · 2025Review
- Radiographic relationship of third molars with the mandibular canal as a predictor of inferior alveolar nerve sensory disturbance: A systematic review and meta-analysis.Imaging science in dentistry · 2025Review
- The agreement of panoramic radiography with cone-beam computed tomography in classifying impacted lower third molars: a systematic review.Archives of craniofacial surgery · 2024Article
- Concordance Analysis of Lower Third Molar Surgery Classifications: A Comparative Study.Dentistry journal · 2024Article
- Investigation of the relationship between the mandibular third molar teeth and the inferior alveolar nerve using posteroanterior radiographs: a pilot study.BMC oral health · 2024Article
- Anatomic feasibility of a modified 3-distal site anesthesia injection method for impacted mandibular third molar extraction using cone-beam computed tomography.Annals of translational medicine · 2022Article
- Knowledge and Attitude Among the Saudi Dentists Towards Coronectomy of Impacted Mandibular Third Molars.Clinical, cosmetic and investigational dentistry · 2022Article
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Authors and funding
9 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundPre-operative radiographic assessment of the anatomical relationship between the roots of the mandibular third molar and the inferior alveolar nerve (IAN) is a must to minimize the risk of IAN injury during surgery.
objectivesTo compare the radiographic signs of digital orthopantomogram (OPG) and cone-beam computed tomography (CBCT). An additional objective was to assess the cortex status between the mandibular canal and third molar on CBCT images in relation to the demographic characteristics, region (right or left side), and angulation of mandibular molar. METHODOLOGY: In this retrospective study, a total of 350 impacted mandibular third molars with a close relationship between the inferior alveolar canal (IAC) and impacted mandibular third molars on digital OPG were further referred for CBCT imaging for assessment of the position of the mandibular canal. The study was conducted between August 2018 and February 2020. Digital OPGs were evaluated for radiographic signs like interruption of the mandibular canal wall, darkening of the roots, diversion of the mandibular canal, and narrowing of the mandibular canal. The age and sex of patients, site of impacted third molar, Winter's classification of mandibular third molar, position of IAC relative to impacted molar, and the radiographic markers of OPG were assessed for cortical integrity using CBCT. Chi square testing was applied to study the values of difference and binomial logistic regression was done to assess the factors associated with cortication. Statistical significance was set at
resultsAmong 350 patients, 207 (59.1%) were male and 143 (40.9%) were female with a mean age of 36.8 years. The most common OPG sign was interruption of white line, seen in 179 (51.1%) cases. In total, 246 cases (70.3%) showed an absence of canal cortication between the mandibular canal and the impacted third molar on CBCT images. Cortication was observed in all cases with a combination of panoramic signs which was statistically significant (
conclusionCBCT imaging is highly recommended for those cases where diversion of the mandibular canal is observed on OPG and when the roots are present between canals.
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