Degree of Compression of the Inferior Alveolar Canal on Cone-Beam Computed Tomography and Outcomes of Postoperative Nerve Injury in Mandibular Third Molar Surgery
| Autor: | Arun Chandu, Tom Jaunay, Anton Sklavos, Ricky Kumar, Seth Delpachitra |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Molar
Adult Cone beam computed tomography medicine.medical_specialty Panoramic radiograph Radiography Mandibular Nerve Mandible Mandibular third molar 03 medical and health sciences 0302 clinical medicine stomatognathic system Radiography Panoramic Medicine Humans Inferior alveolar canal Retrospective Studies business.industry Tooth Impacted 030206 dentistry Nerve injury Cone-Beam Computed Tomography Compression (physics) Surgery Otorhinolaryngology 030220 oncology & carcinogenesis Tooth Extraction Female Molar Third Trigeminal Nerve Injuries Oral Surgery medicine.symptom business |
| Zdroj: | Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons. 79(5) |
| ISSN: | 1531-5053 |
| Popis: | Purpose Cone-beam computed tomography (CBCT) offers the advantage of a 3-dimensional representation of the anatomic relationship of the mandibular third molar tooth and the inferior alveolar canal (IAC), as compared to a panoramic radiograph. We hypothesized that a novel method of categorizing the degrees of compression of the IAC were reliable predictors for postoperative nerve injuries. Methods We conducted a retrospective analysis of the outcomes in third molar surgery for patients who obtained a CBCT scan in additional to a plain film radiograph over a 12 months period and underwent surgical removal of their mandibular third molars; 257 consecutive patients were identified, and 416 mandibular third molars were surgically removed. Results Patients who had severe compression of the inferior alveolar canal (IAC) on CBCT imaging had a significantly increased risk of a postoperative IAN injury (P = .0068, OR = 3.47, 95% CI: 1.40 to 8.54) and accounted for 52.17% of all IAN injuries. Ninety-one percent of all cases of postoperative nerve injury occurred in female patients. The mean age of patients with a postoperative IAN injury (30.2 years) was significantly higher than those without injury 26.0 years; (P = .016, 95%CI: 25.11 to 33.80) CONCLUSIONS: In addition to patient factors, assessment of the degree of compression on a preoperative CBCT image is a useful tool for predicting outcomes in mandibular third molar surgery. In cases of severe compression of the IAC, patients are at a significantly increased risk of postoperative IAN injury. |
| Databáze: | OpenAIRE |
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