PDF(Pubmed)
Abstract：
UNASSIGNED: To evaluate the surface, compositional, and histological changes in the overlying soft tissues of retrieved stainless-steel mini-plates and screws used for rigid internal fixation in the maxillofacial skeleton.
UNASSIGNED: A prospective study was conducted comprising 60 patients who sustained maxillofacial trauma and underwent ORIF in our unit previously and who required hardware retrieval in the post-operative phase. The retrieved hardware was evaluated for surface and compositional changes with the help of a scanning electron microscope for surface roughness and corrosion changes. Energy-dispersive X-ray study was done to know the composition and metal release from the hardware. The data obtained from these results were compared with a control unused and a sterile stainless-steel mini-plate and screw. The effects of the corrosion changes of this hardware on the adjacent soft tissues were evaluated histologically to assess the cellular changes of the soft tissue cover overlying the stainless-steel mini-plates and screws.
UNASSIGNED: A total of 96 stainless-steel mini-plates and 380 stainless-steel screws were retrieved from 60 patients. The control plate was smooth without any surface and corrosion defects, while the retrieved mini-plates irrespective of the reason for removal have shown surface roughness. Fe and Ni ions were found to be significantly reduced in the retrieved mini-plates. The presence of CrC in the retrieved plates indicates corrosion, which was seen only in hardware retrieved from symptomatic patients. The histological study revealed chronic inflammatory cell infiltrate with hyalinized connective tissue in all the samples irrespective of the reason for the removal of the plate.
UNASSIGNED: Stainless-steel mini-plates and screws act as a potent foreign body material and initiate a localized inflammatory reaction due to its corrosive products with longer duration of stay. Hence, the authors advocate the overall shift in the use of stainless-steel hardware to titanium hardware for ORIF.
UNASSIGNED: A prospective study was conducted comprising 60 patients who sustained maxillofacial trauma and underwent ORIF in our unit previously and who required hardware retrieval in the post-operative phase. The retrieved hardware was evaluated for surface and compositional changes with the help of a scanning electron microscope for surface roughness and corrosion changes. Energy-dispersive X-ray study was done to know the composition and metal release from the hardware. The data obtained from these results were compared with a control unused and a sterile stainless-steel mini-plate and screw. The effects of the corrosion changes of this hardware on the adjacent soft tissues were evaluated histologically to assess the cellular changes of the soft tissue cover overlying the stainless-steel mini-plates and screws.
UNASSIGNED: A total of 96 stainless-steel mini-plates and 380 stainless-steel screws were retrieved from 60 patients. The control plate was smooth without any surface and corrosion defects, while the retrieved mini-plates irrespective of the reason for removal have shown surface roughness. Fe and Ni ions were found to be significantly reduced in the retrieved mini-plates. The presence of CrC in the retrieved plates indicates corrosion, which was seen only in hardware retrieved from symptomatic patients. The histological study revealed chronic inflammatory cell infiltrate with hyalinized connective tissue in all the samples irrespective of the reason for the removal of the plate.
UNASSIGNED: Stainless-steel mini-plates and screws act as a potent foreign body material and initiate a localized inflammatory reaction due to its corrosive products with longer duration of stay. Hence, the authors advocate the overall shift in the use of stainless-steel hardware to titanium hardware for ORIF.
摘要：
■要评估表面，组成,以及用于颌面骨骼刚性内固定的取回的不锈钢微型板和螺钉的上覆软组织的组织学变化。
■进行了一项前瞻性研究，其中包括60例患者，这些患者先前在我们单位接受了颌面部创伤并接受了ORIF，并且在术后阶段需要硬件取回。借助扫描电子显微镜对回收的硬件进行表面和成分变化的评估，以了解表面粗糙度和腐蚀变化。进行了能量色散X射线研究，以了解硬件的成分和金属释放。将从这些结果获得的数据与未使用的对照和无菌不锈钢微型板和螺钉进行比较。对该硬件的腐蚀变化对邻近软组织的影响进行了组织学评估，以评估覆盖不锈钢微型板和螺钉的软组织覆盖物的细胞变化。
■从60名患者中总共取回了96个不锈钢微型板和380个不锈钢螺钉。对照板光滑,表面无腐蚀缺陷,而无论移除的原因如何，取回的微型板都显示出表面粗糙度。在回收的微型板中发现Fe和Ni离子显着减少。检索到的板中存在CrC表示腐蚀，仅在有症状患者的硬件中发现。组织学研究显示，所有样品中的慢性炎症细胞浸润和透明结缔组织，而与去除平板的原因无关。
■不锈钢微型板和螺钉作为一种强效异物，并由于其腐蚀性产品而引起局部炎症反应，并具有较长的停留时间。因此，作者主张ORIF使用不锈钢硬件到钛硬件的整体转变。
■进行了一项前瞻性研究，其中包括60例患者，这些患者先前在我们单位接受了颌面部创伤并接受了ORIF，并且在术后阶段需要硬件取回。借助扫描电子显微镜对回收的硬件进行表面和成分变化的评估，以了解表面粗糙度和腐蚀变化。进行了能量色散X射线研究，以了解硬件的成分和金属释放。将从这些结果获得的数据与未使用的对照和无菌不锈钢微型板和螺钉进行比较。对该硬件的腐蚀变化对邻近软组织的影响进行了组织学评估，以评估覆盖不锈钢微型板和螺钉的软组织覆盖物的细胞变化。
■从60名患者中总共取回了96个不锈钢微型板和380个不锈钢螺钉。对照板光滑,表面无腐蚀缺陷,而无论移除的原因如何，取回的微型板都显示出表面粗糙度。在回收的微型板中发现Fe和Ni离子显着减少。检索到的板中存在CrC表示腐蚀，仅在有症状患者的硬件中发现。组织学研究显示，所有样品中的慢性炎症细胞浸润和透明结缔组织，而与去除平板的原因无关。
■不锈钢微型板和螺钉作为一种强效异物，并由于其腐蚀性产品而引起局部炎症反应，并具有较长的停留时间。因此，作者主张ORIF使用不锈钢硬件到钛硬件的整体转变。
