Does plate adaptation affect stability? A biomechanical comparison of locking and nonlocking plates
Does plate adaptation affect stability? A biomechanical comparison of locking and nonlocking plates
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DOI：
10.1053/joms.2002.35732
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发表时间：
2002-11-01
影响因子：
1.9
通讯作者：
Goltz, M
中科院分区：
文献类型：
--
作者：
Haug, RH;Street, CC;Goltz, M
目的：本研究的目的是确定接骨板适应度和锁定效果是否会影响固定在2.0 mm单皮质上级边界接骨板和2.4 mm重建接骨板下缘的接骨板/螺钉/基质系统的力学行为，以稳定模拟下颌角骨折。材料和方法：本研究中共使用了130个聚氨酯合成下颌骨复制品（Synbone，Landburn，Switzerland）。切缘和磨牙载荷各5个对照，2.4 mm锁定和非锁定重建接骨板以及2.0 mm锁定和非锁定单皮质上级边界接骨板各5个样本，使用Instron 1331在切缘和磨牙区域对0.0 mm偏心距、1.0 mm偏心距和2.0 mm偏心距进行加载（Instron Corp，Canton，MA）伺服液压机械测试单元。记录载荷/位移数据，并确定屈服载荷、屈服位移和刚度。计算平均值和标准偏差值。使用单因素方差分析确定锁定效果和钢板适应度的统计学显著性差异（P
Purpose: The purpose of this investigation was to determine whether the degree of plate adaptation and effects of locking influenced the mechanical behavior of the plate/screw/substrate system for 2.0-mm monocortical superior border plates and 2.4-mm reconstruction plates secured at the inferior border intended to stabilize simulated mandibular angle fractures.Materials and Methods: A total of 130 polyurethane synthetic mandible replicas (Synbone, Landquart, Switzerland) were used in this investigation. Five controls each, for incisal edge and molar loading, as well as 5 samples each for 2.4-mm locking and nonlocking reconstruction plates and 2.0-mm locking and nonlocking monocortical superior border plates, intimately adapted (0.0-mm offset), 1.0-mm offset and 2.0-mm offset were subjected to loading at the incisal edge and molar region with an Instron 1331 (Instron Corp, Canton, MA) servohydraulic mechanical testing unit. Load/displacement data were recorded, and yield load, yield displacement, and stiffness were determined. Mean and standard deviation values were calculated. Statistically significant differences were determined for the effects of locking and degree of plate adaptation using a 1-way analysis of variance (P