Predictive Value of Panoramic Radiography for Injury of Inferior Alveolar Nerve After Mandibular Third Molar Surgery. 2017

Naichuan Su, and Arjen van Wijk, and Erwin Berkhout, and Gerard Sanderink, and Jan De Lange, and Hang Wang, and Geert J M G van der Heijden
PhD candidate, State Key Laboratory of Oral Disease and Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China; and Department of Social Dentistry, Academic Center for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit, Amsterdam, The Netherlands. Electronic address: naichuansu@hotmail.com.

OBJECTIVE The purpose of the present systematic review was to assess the added value of panoramic radiography in predicting postoperative injury of the inferior alveolar nerve (IAN) in the decision-making before mandibular third molar (MM3) surgery. METHODS MEDLINE and EMBASE were searched electronically to identify the diagnostic accuracy of studies that had assessed the predictive value of 7 panoramic radiographic signs, including root-related signs (darkening of the root, deflection of the root, narrowing of the root, and dark and bifid apex of the root) and canal-related signs (interruption of the white line of the canal, diversion of the canal, and narrowing of the canal) for IAN injury after MM3 surgery. RESULTS A total of 8 studies qualified for the meta-analysis. The pooled sensitivity and specificity of the 7 signs ranged from 0.06 to 0.49 and 0.81 to 0.97, respectively. The area under the summary area under the receiver operating characteristic curve ranged from 0.42 to 0.89. The pooled positive predictive value (PPV) and negative predictive value (NPV) ranged from 7.5 to 26.6% and 95.9 to 97.7%, respectively. The added value of a positive sign for ruling in an IAN injury (PPV minus the prior probability) ranged from 3.4 to 22.2%. The added value of a negative sign for ruling out an IAN injury (NPV minus [1 minus the prior probability]) ranged from 0.1 to 2.2%. CONCLUSIONS For all 7 signs, the added value of panoramic radiography is too low to consider it appropriate for ruling out postoperative IAN in the decision-making before MM3 surgery. The added value of panoramic radiography for determining the presence of diversion of the canal, interruption of the white line of the canal, and darkening of the root can be considered sufficient for ruling in the risk of postoperative IAN injury in the decision-making before MM3 surgery.

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
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D011237 Predictive Value of Tests In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test. Negative Predictive Value,Positive Predictive Value,Predictive Value Of Test,Predictive Values Of Tests,Negative Predictive Values,Positive Predictive Values,Predictive Value, Negative,Predictive Value, Positive
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
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

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