Clinical significance of computed tomography assessment for third molar surgery

• 作者: Kei Tomihara Kenji Nakamori Makoto Noguchi
• 来源期刊: 世界放射学杂志：英文版（电子版）
• 学科: 医学
• 关键词: COMPUTED TOMOGRAPHY THIRD MOLAR Extraction Oral surgery ASSESSMENT
• 年，卷（期）: 2014,（7）
• 页码范围: 417-423
• 页数: 7页
• 分类号: R783

摘要

Surgical extraction of the third molar is the most commonly performed surgical procedure in the clinical practice of oral surgery.Third molar surgery is warranted when there is inadequate space for eruption,malpositioning,or risk for cyst or odontogenic tumor formation.Preoperative assessment should include a detailed morphologic analysis of the third molar and its relationship to adjacent structures and surrounding tissues.Due to developments in medical engineering technology,computed tomography(CT)now plays a critical role in providing the clear images required for adequate assessment prior to third molar surgery.Removal of the maxillary third molar is associated with a risk for maxillary sinus perforation,whereas removal of the mandibular third molar can put patients at risk for a neurosensory deficit from damage to the lingual nerve or inferior alveolar nerve.Multiple factors,including demographic,anatomic,and treatment-related factors,influence the incidence of nerve injury during or following removal of the third molar.CT assessment of the third molar prior to surgery can identify some of these risk factors,such as the absence of cortication between themandibular third molar and the inferior alveolar canal,prior to surgery to reduce the risk for nerve damage.This topic highlight presents an overview of the clinical significance of CT assessment in third molar surgery.