Objective This paper explores the clinical effects of rigid internal fixation in oral and maxillofacial surgery. Methods 120 patients suffering from jaw fracture in our hospital have been picked and they were equally divided into two groups according to randomized and controlled principle. 60 patients in random group accepted the treatment of rigid internal fixation and 60 pa-tients in control group accepted general treatment of intermaxillary fixation. The clinical effects of two groups have been compared. Results Treatment time of control group was (1.0±0.5) per week and is significantly less than that of random group which was (2.5±1.0) per week. Difference between two groups is of statistic significance (P<0.05); incidence of bad breath after treatment in random group was 2 (3.3%) which was remarkably less than that in control group, which was 8 (13.3%). Difference between two groups is of statistic significance (P<0.05). Conclusion Rigid internal fixation has better clinical effects than general intermaxillary fixation. Characterized by easy operation, little trauma, accurate fixation of fractures, and fast recovery of oral functions, which can improve patient's clinical symptoms with curative effect, rigid internal fixation is a better clinical choice to cure mandibular frac-ture at present.%目的：探讨坚固内固定技术在口腔颌面外科中的临床疗效。方法随机选取该院收治的颌骨骨折患者120例，根据随机对照原则均分为两组，观察组60例行坚固内固定技术治疗，对照组60例行常规的颌间固定技术治疗，比较两组患者的临床治疗效果。结果观察组患者接受治疗的时间(1.0±0.5)周，明显小于对照组的(2.5±1.0)周，对比两组差异有统计学意义(P<0.05)；治疗后观察组患者的口臭发生率为2(3.3%)，显著优于对照组患者的8(13.3%)，比较两组差异有统计学意义(P<0.05)；观察组患者术后咬合关系紊乱发生率1(1.7%)，显著低于对照组的6(10.0%)，对比两组差异有统计学意义(P<0.05)。结论坚固内固定技术相比较于常规的颌间固定技术治疗颌骨骨折具有较好的临床效果，具有操作简便、创伤小、骨折复位准确、口腔功能恢复快等临床优点，能尽早改善病人的临床症状，疗效确切，是目前治疗下颌骨骨折较好的临床选择。
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