Xu Dongdong, Zhang Yaoguang, Jiang Aijun, Cai Yayi, Nie Xin, Cheng Gu
School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang P.R., China.
Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Shandong University, Jinan, China.
BMC Oral Health. 2025 Jul 15;25(1):1161. doi: 10.1186/s12903-025-06513-1.
Breakage and displacement of the high-speed dental handpiece bur is one of the intraoperative complications during mandibular third molar extraction. The retained metallic fragments can trigger issues such as pain and infection. Traditional retrieval methods require extensive tissue dissection, increasing the risk of nerve injury and postoperative complications. While emerging technologies are precise, their high cost and technical complexity hinder widespread adoption. Therefore, there is an urgent need for minimally invasive and easy-to-use treatments. This retrospective study aimed to compare the clinical efficacy of magnet-assisted removal and conventional methods for retrieving broken burs during mandibular third molar surgery, as well as to analyze the associated factors and outcomes.
This retrospective study analyzed 15 cases of broken burs removal divided into conventional removal (n = 7) and magnet-assisted removal (n = 8) groups. Primary outcomes included operative time and success rate; secondary outcomes encompassed 24-hour postoperative visual analogue scale (VAS) pain scores, limited mouth opening at 72 h postoperatively, and neurosensory disturbances.
Compared to conventional removal, magnet-assisted removal significantly reduced operative time (P = 0.03) and showed a non-significant trend toward lower neurosensory complication rates (P = 0.036). Although the success rate of magnet-assisted removal (100%) exceeded that of conventional removal techniques (71.4%), this difference was not statistically significant. The magnet group demonstrated superior secondary outcomes, lower mean VAS scores and fewer cases of limited mouth opening.
Magnet-assisted removal is a technically simple, safe, and effective minimally invasive alternative to conventional removal methods. Its advantages include reduced operative duration and potentially improved postoperative recovery.
高速牙科手机钻针折断和移位是下颌第三磨牙拔除术中的并发症之一。残留的金属碎片可引发疼痛和感染等问题。传统的取出方法需要广泛的组织解剖，增加了神经损伤和术后并发症的风险。虽然新兴技术精确，但成本高且技术复杂，阻碍了其广泛应用。因此，迫切需要微创且易于使用的治疗方法。本回顾性研究旨在比较磁辅助取出法与传统方法在下颌第三磨牙手术中取出折断钻针的临床疗效，并分析相关因素和结果。
本回顾性研究分析了15例折断钻针取出病例，分为传统取出组（n = 7）和磁辅助取出组（n = 8）。主要结局指标包括手术时间和成功率；次要结局指标包括术后24小时视觉模拟评分（VAS）疼痛评分、术后72小时张口受限情况和神经感觉障碍。
与传统取出法相比，磁辅助取出法显著缩短了手术时间（P = 0.03），神经感觉并发症发生率有降低趋势但无统计学意义（P = 0.036）。虽然磁辅助取出法的成功率（100%）高于传统取出技术（71.4%），但差异无统计学意义。磁辅助取出组的次要结局指标表现更优，平均VAS评分更低，张口受限病例更少。
磁辅助取出法是一种技术简单、安全有效的微创替代传统取出方法。其优点包括缩短手术时间并可能改善术后恢复。
