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COMPARATIVE STUDY
JOURNAL ARTICLE
Correlation of panoramic radiographs and spiral CT scan in the preoperative assessment of intimacy of the inferior alveolar canal to impacted mandibular third molars.
Journal of Craniofacial Surgery 2011 March
Iatrogenic origin of neurosensory dysfunction is a distressing sequel to the surgical removal of impacted mandibular third molars, which is frequently overlooked. According to various surveys, the rate of neurologic complications related to the surgical removal of impacted mandibular third molars varies between 0.5% and 1% for permanent damage and 5% and 7% involving temporary damage. Prevention always stands as the best modality to avoid patient's discomfort and lawsuits by sophisticated consumerism.Preoperative assessment of the topographic relationship of the impacted mandibular third molar to the inferior alveolar canal has been performed by different imaging modalities. However, none of the imaging techniques give cent percent information. The best available imaging modality in time and resources should be adopted by the surgeon to avoid complications and lawsuits. Orthopantomography has often been cited as the imaging modality of choice before surgical removal of impacted mandibular third molar. However, it depicts a two-dimensional view of an intricate three-dimensional anatomic relationship and also fails to accurately project the buccolingual relation between the tooth and the inferior alveolar canal. The current study was designed to evaluate the potential advantages of spiral computed tomography and compare its efficacy as a presurgical planning tool with orthopantomography in patients with impacted mandibular third molars showing proximity to the inferior alveolar canal on an orthopantomogram.
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