Langford R J, Frame J W
Department of Oral and Maxillofacial Surgery, University Hospital Birmingham NHS Trust, Queen Elizabeth Hospital, UK.
Int J Oral Maxillofac Surg. 2002 Oct;31(5):511-8. doi: 10.1054/ijom.2002.0283.
This investigation is a controlled human plate-retrieval study. The surface appearances and elemental composition of 50 titanium maxillofacial plates and associated screws retrieved from 39 patients were compared with a control sample of unused plates and screws using stereomicroscopy, scanning electron microscopy and energy dispersive X-ray analysis. There were two surface finishes, either anodized or non-anodized. Surface contamination was detected on both retrieved and control plates consisting of aluminium and silica and was more commonly present on non-anodized specimens. Manufacturing defects comprising rough metal edges and protuberances were identified on the unused controls and surgical damage was evident on the retrieved specimens. There were no signs of corrosion or surface deterioration on the retrieved plates and screws which had been in the tissues for between 1 month and 13 years. There was no evidence from this study to support the routine removal of titanium maxillofacial miniplates plates due to corrosion up to a period of 13 years.
本研究为一项对照人体接骨板取出研究。使用体视显微镜、扫描电子显微镜和能量色散X射线分析，将从39例患者体内取出的50块钛制颌面接骨板及相关螺钉的表面外观和元素组成，与未使用的接骨板和螺钉对照样本进行比较。接骨板有两种表面处理方式，即阳极氧化处理或未阳极氧化处理。在取出的接骨板和对照接骨板上均检测到由铝和二氧化硅组成的表面污染物，且在未阳极氧化的标本上更常见。在未使用的对照样本上发现了包括粗糙金属边缘和突起在内的制造缺陷，在取出的标本上明显可见手术损伤。在植入组织1个月至13年的取出接骨板和螺钉上，没有腐蚀或表面劣化的迹象。本研究没有证据支持因腐蚀而常规取出钛制颌面微型接骨板，直至13年期限。
