Assessment of the reliability of radiographic signs on panoramic radiographs to determine the relationship between mandibular third molars and the inferior alveolar canal. 2020

Canan Uzun, and Ayşe Pınar Sumer, and Mahmut Sumer
Assistant Professor, University of Health Sciences, Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Istanbul, Turkey; Instructor, Eastern Mediterranean University, Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Famagusta, North Cyprus. Electronic address: Canan.uzun@sbu.edu.tr.

OBJECTIVE To assess the reliability of radiographic signs of the relationship between impacted mandibular third molars (IMTMs) and the inferior alveolar canal (IAC), and the vertical relationship between IMTM and IAC on panoramic radiographs (PRs) as risk indicators for IAC exposure during extraction. METHODS Seven radiographic signs regarding the appearance of roots and the IAC were assessed as present or absent on PRs. The vertical relationship between IMTM and the IAC was divided into 3 levels. The correlation between radiographic data and IAC exposure during extraction was analyzed by using χ2 statistics and logistic regression analysis. RESULTS In total, 198 IMTMs were examined. In 46 cases (23.2%), the IAC was exposed during extraction. Four radiographic signs-darkening of the root, narrowing of the root, narrowing of the IAC, and diversion of the IAC-were associated with IAC exposure (P < .05). Concurrence of 2 or more of 7 radiographic signs increased the risk of IAC exposure (P < .001). The vertical relationship between IMTM and the IAC was found to be a risk indicator for IAC exposure (P < .001). No significant correlation was found between IAC exposure and inferior alveolar nerve damage (P = .148). CONCLUSIONS Panoramic radiography is useful for assessing the risk of IAC exposure during IMTM extraction.

UI MeSH Term Description Entries
D008334 Mandible The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth. Mylohyoid Groove,Mylohyoid Ridge,Groove, Mylohyoid,Grooves, Mylohyoid,Mandibles,Mylohyoid Grooves,Mylohyoid Ridges,Ridge, Mylohyoid,Ridges, Mylohyoid
D008340 Mandibular Nerve A branch of the trigeminal (5th cranial) nerve. The mandibular nerve carries motor fibers to the muscles of mastication and sensory fibers to the teeth and gingivae, the face in the region of the mandible, and parts of the dura. Alveolar Nerve, Inferior,Auriculotemporal Nerve,Buccal Nerve,Deep Temporal Nerve,Lateral Pterygoid Nerve,Masseteric Nerve,Mental Nerve,Mylohyoid Nerve,Auriculotemporal Nerves,Buccal Nerves,Deep Temporal Nerves,Inferior Alveolar Nerve,Inferior Alveolar Nerves,Lateral Pterygoid Nerves,Mandibular Nerves,Masseteric Nerves,Mental Nerves,Mylohyoid Nerves,Nerve, Auriculotemporal,Nerve, Buccal,Nerve, Deep Temporal,Nerve, Inferior Alveolar,Nerve, Lateral Pterygoid,Nerve, Mandibular,Nerve, Masseteric,Nerve, Mental,Nerve, Mylohyoid,Pterygoid Nerve, Lateral,Pterygoid Nerves, Lateral,Temporal Nerve, Deep,Temporal Nerves, Deep
D008964 Molar, Third The aftermost permanent tooth on each side in the maxilla and mandible. Tooth, Wisdom,Teeth, Wisdom,Molars, Third,Third Molar,Third Molars,Wisdom Teeth,Wisdom Tooth
D011862 Radiography, Panoramic Extraoral body-section radiography depicting an entire maxilla, or both maxilla and mandible, on a single film. Orthopantomography,Panoramic Radiography,Pantomography,Orthopantomographies,Panoramic Radiographies,Pantomographies,Radiographies, Panoramic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014081 Tooth Extraction The surgical removal of a tooth. (Dorland, 28th ed) Extraction, Tooth,Extractions, Tooth,Tooth Extractions
D014095 Tooth, Impacted A tooth that is prevented from erupting by a physical barrier, usually other teeth. Impaction may also result from orientation of the tooth in an other than vertical position in the periodontal structures. Teeth, Impacted,Impacted Teeth,Impacted Tooth
D015203 Reproducibility of Results The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results. Reliability and Validity,Reliability of Result,Reproducibility Of Result,Reproducibility of Finding,Validity of Result,Validity of Results,Face Validity,Reliability (Epidemiology),Reliability of Results,Reproducibility of Findings,Test-Retest Reliability,Validity (Epidemiology),Finding Reproducibilities,Finding Reproducibility,Of Result, Reproducibility,Of Results, Reproducibility,Reliabilities, Test-Retest,Reliability, Test-Retest,Result Reliabilities,Result Reliability,Result Validities,Result Validity,Result, Reproducibility Of,Results, Reproducibility Of,Test Retest Reliability,Validity and Reliability,Validity, Face
D061221 Trigeminal Nerve Injuries Traumatic injuries to the TRIGEMINAL NERVE. It may result in extreme pain, abnormal sensation in the areas the nerve innervates on face, jaw, gums and tongue and can cause difficulties with speech and chewing. It is sometimes associated with various dental treatments. Cranial Nerve V Injury,Fifth Cranial Nerve Injuries,Fifth Cranial Nerve Injury,Fifth-Nerve Palsy, Traumatic,Fifth-Nerve Trauma,Injury, Cranial Nerve V,Injury, Fifth Cranial Nerve,Traumatic Fifth-Nerve Palsy,Trigeminal Nerve Avulsion,Trigeminal Nerve Contusion,Trigeminal Nerve Injury,Trigeminal Nerve Transection,Trigeminal Nerve Trauma,Trigeminal Neuropathy, Traumatic,Avulsion, Trigeminal Nerve,Avulsions, Trigeminal Nerve,Contusion, Trigeminal Nerve,Contusions, Trigeminal Nerve,Fifth Nerve Palsy, Traumatic,Fifth Nerve Trauma,Fifth-Nerve Palsies, Traumatic,Fifth-Nerve Traumas,Injuries, Trigeminal Nerve,Injury, Trigeminal Nerve,Nerve Avulsion, Trigeminal,Nerve Avulsions, Trigeminal,Nerve Contusion, Trigeminal,Nerve Contusions, Trigeminal,Nerve Injuries, Trigeminal,Nerve Injury, Trigeminal,Nerve Transection, Trigeminal,Nerve Transections, Trigeminal,Nerve Trauma, Trigeminal,Nerve Traumas, Trigeminal,Neuropathies, Traumatic Trigeminal,Neuropathy, Traumatic Trigeminal,Palsies, Traumatic Fifth-Nerve,Palsy, Traumatic Fifth-Nerve,Transection, Trigeminal Nerve,Transections, Trigeminal Nerve,Trauma, Fifth-Nerve,Trauma, Trigeminal Nerve,Traumas, Fifth-Nerve,Traumas, Trigeminal Nerve,Traumatic Fifth Nerve Palsy,Traumatic Fifth-Nerve Palsies,Traumatic Trigeminal Neuropathies,Traumatic Trigeminal Neuropathy,Trigeminal Nerve Avulsions,Trigeminal Nerve Contusions,Trigeminal Nerve Transections,Trigeminal Nerve Traumas,Trigeminal Neuropathies, Traumatic

Related Publications

Canan Uzun, and Ayşe Pınar Sumer, and Mahmut Sumer
June 2013, Journal of maxillofacial and oral surgery,
Canan Uzun, and Ayşe Pınar Sumer, and Mahmut Sumer
March 2004, Journal of the American Dental Association (1939),
Canan Uzun, and Ayşe Pınar Sumer, and Mahmut Sumer
June 2018, Journal of Taibah University Medical Sciences,
Canan Uzun, and Ayşe Pınar Sumer, and Mahmut Sumer
January 2016, The open dentistry journal,
Canan Uzun, and Ayşe Pınar Sumer, and Mahmut Sumer
November 2005, Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics,
Canan Uzun, and Ayşe Pınar Sumer, and Mahmut Sumer
June 2023, Life (Basel, Switzerland),
Copied contents to your clipboard!