Yang L, Patil P M
Departement of Stomatology, The Second Hospital of Lanzhou University, 82 Cuiyingmwen, Chengguan District, Lanzhou City, Gansu Province, China.
Eur Rev Med Pharmacol Sci. 2015 Feb;19(4):552-6.
This prospective randomized study evaluated the efficacy of a 2.0 mm locking plate/screw system compared with a 2.0-mm nonlocking plate/screw system in fixation of 60 isolated non-comminuted mandibular angle fractures.
Sixty patients were randomly assigned to receive a 2.0 mm locking plate (group A, n = 30) or 2.0 mm non-locking plate (group B, n = 30). All patients were followed up to 6 months postoperatively and evaluated for complications, occlusal stability and overall results of fixation.
Five complications occurred in the locking group and fourteen in the non-locking group with complication rates equalling 17% and 47% respectively. When comparing the overall results according to plates used, the χ² test showed a statistically significant difference between the locking and non-locking plates (p < 0.01). Fewer patients required IMF in group A.
Mandibular angle fractures treated with 2.0 mm locking plates show greater stability and were associated with fewer complications than with 2.0 mm non-locking plates.
本前瞻性随机研究评估了2.0毫米锁定钢板/螺钉系统与2.0毫米非锁定钢板/螺钉系统在固定60例孤立性非粉碎性下颌角骨折中的疗效。
60例患者被随机分配接受2.0毫米锁定钢板（A组，n = 30）或2.0毫米非锁定钢板（B组，n = 30）。所有患者术后随访6个月，评估并发症、咬合稳定性和固定的总体效果。
锁定组发生5例并发症，非锁定组发生14例并发症，并发症发生率分别为17%和47%。根据所用钢板比较总体结果时，χ²检验显示锁定钢板和非锁定钢板之间存在统计学显著差异（p < 0.01）。A组需要颌间固定的患者较少。
与2.0毫米非锁定钢板相比，用2.0毫米锁定钢板治疗下颌角骨折显示出更高的稳定性，且并发症更少。
