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Randomized controlled clinical trial on internal fixation for fracture of mandible with super-high molecular weight PDLLA plates and screws
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF PRIMARY MEDICINE AND PHARMACY
- Issue:
- 6
- DOI:
- 10.3760/cma.j.issn.1008-6706.2005.06.001
- Key Word:
- 下颌骨折;夹板/钛;颌骨固定技术;超高分子量聚D;L乳酸
Abstract： 目的评价国产超高分子量聚D,L乳酸(PDLLA)小夹板螺钉在下颌骨骨折内固定中的疗效.方法采用随机抽样的方法,将57例下颌骨单纯性线性骨折分为两组,分别行PDLLA小夹板螺钉内固定和小型钛板内固定.术后观察骨折段复位、咬合关系、咀嚼效能、伤口愈合及局部组织反应等情况.并采用B超观察PDLLA小夹板在患者体内的降解过程.结果PDLLA夹板组内固定术后骨折段的稳定性好,骨折愈合正常,咬合关系恢复良好,无一例出现无菌性炎症,与小型钛板组的疗效相似(P＞0.05).术后2个月咀嚼效能与小型钛板组差异无显著意义(P＞0.05).术后4个月在B超图像上观察到PDLLA夹板开始降解,术后6个月可见夹板断裂,术后1年夹板已基本吸收,仅剩少许残留.结论在下颌骨单纯性线性骨折治疗中,PDLLA小夹板螺钉是一种比小型钛板更理想的骨折内固定系统.
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