Sun Ren-yi, Fang Ping-juan, Xiao Jin, Liu Deng-feng, Xu Xing-qiao, Hu Rong-dang
Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital, Wenzhou Medical College, Zhejiang Province, China.
Shanghai Kou Qiang Yi Xue. 2012 Jun;21(3):344-9.
To compare the operating time, root fracture and postoperative complications between split-root extraction and medial resistance removal in extraction of mandibular small-angle impacted third molars, to evaluate the advantages of split-root extraction in medially impacted tooth extraction.
Forty male patients with bilaterally mandibular medial small-angle impacted third molars, having multiple roots in panoramic films, were selected. The impacted teeth on one side were extracted by using split-root method, while the similar impacted teeth on the other side were extracted by using medial resistance removal method. The operating time, root fracture, postoperative pain, facial edema, and mouth opening were recorded. SPSS11.5 software package was used and paired t test was performed to analyze the data.
There were significant differences in operating time and root fracture between the two methods (P<0.05). In the split-root group, the operating time was shorter and root fracture were less. After 24 hours, facial edema, limited mouth opening, and pain of the split-root group was less severe than that of the medial resistance removal group, differences were significant(P<0.05). After 72 hours, limited mouth opening of the split-root group was milder than that of the resistance removal group, the difference was significant (P<0.05). After 120 hours, there was no significant difference of any complications between the two groups.
In extraction of mandibular medial small-angle impacted third molars with multiple roots, the operating time of split-root extraction is shorter. The root fracture possibility of split-root extraction is smaller, and postoperative complications are less common.
比较下颌小角度阻生第三磨牙拔除术中分根法与去骨法的手术时间、牙根折断情况及术后并发症，评估分根法在下颌近中阻生牙拔除术中的优势。
选取40例双侧下颌近中低位阻生第三磨牙且全景片显示为多根牙的男性患者。一侧患牙采用分根法拔除，另一侧患牙采用去骨法拔除。记录手术时间、牙根折断情况、术后疼痛、面部肿胀及开口度。采用SPSS11.5软件包，进行配对t检验分析数据。
两种方法在手术时间和牙根折断情况方面存在显著差异（P<0.05）。分根组手术时间短，牙根折断少。术后24小时，分根组面部肿胀、开口受限及疼痛程度均低于去骨组，差异有统计学意义（P<0.05）。术后72小时，分根组开口受限程度轻于去骨组，差异有统计学意义（P<0.05）。术后120小时，两组各项并发症差异无统计学意义。
在下颌近中低位阻生多根第三磨牙拔除术中，分根法手术时间短，牙根折断可能性小，术后并发症少。
