目的：研究医用胶原蛋白海绵在预防下颌阻生第三磨牙拔除术后并发症的疗效。方法选择100例需拔除双侧埋伏程度相近的下颌阻生第三磨牙患者，采用抽签法将患者两侧患牙随机分成两组，试验组拔牙创内植入医用胶原蛋白海绵，对照组拔牙创内不放任何药物。分别于术后30 min复查，术后第7天随访，记录术后并发症的发生情况。结果试验组100颗患牙拔除后引起的并发症中，出血10颗，肿胀10颗，张口受限3颗，干槽症3颗；对照组100颗患牙拔除后引起出血37颗，肿胀22颗，张口受限12颗，干槽症10颗。结果显示试验组预防拔牙术后出血率、肿胀出现率、张口受限出现情况与干槽症的出现率均明显低于对照组，组间差异具有统计学意义（P＜0.05）。结论医用胶原蛋白海绵可降低下颌阻生第三磨牙拔除术后并发症的发生。%Objective To study the clinical effect of medical collagen sponge in the prevention of postoperative complications after extracting mandibular impacted teeth. Methods 100 cases bilateral extraction of mandibular third molar were required as the objects of the study. Patients were randomly divided into two groups. In test group medical collagen sponge was implanted after tooth extraction, while the control group extraction did not put in any drug. The tooth socket was examined in 30 min and 7 d respectively. Results Low incidence of bleeding, swelling, limitation of mouth opening and dry socket occurred in the test group, which is statistically significant with the control group ( P <0.05). Conclusion Medical collagen sponge can reduce the incidence of postoperative complications of impacted man⁃dibular third molar extraction.
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