Leung Yiu Yan, Cheung Lim Kwong
Faculty of Dentistry, The University of Hong Kong.
Ann R Australas Coll Dent Surg. 2008 Jun;19:50-1.
The aim of the study was to compare the surgical complications and neurosensory disturbance of coronectomy and conventional excision of lower third molars with roots in close proximity to inferior dental nerve. We conducted a randomized clinical trial of patients with lower third molars showing specific radiographic signs was conducted. Patients were randomized to undergo either coronectomy or total excision (control) of the lower third molar. It was concluded that coronectomy can significantly reduce the incidence of inferior dental nerve deficit when compared with conventional excision when the roots show radiographic signs of close proximity, and the technique showed a similar rate of other surgical morbidities.
本研究的目的是比较冠切除术与下颌第三磨牙常规切除术（牙根紧邻下牙槽神经）的手术并发症和神经感觉障碍。我们对表现出特定影像学征象的下颌第三磨牙患者进行了一项随机临床试验。患者被随机分为接受下颌第三磨牙冠切除术或全切除术（对照组）。得出的结论是，当牙根在影像学上显示紧邻时，与常规切除术相比，冠切除术可显著降低下牙槽神经缺损的发生率，且该技术显示出其他手术并发症的发生率相似。
