Confocal Laser Scanning Microscope Evaluation of Early Bacterial Colonization on Zirconium Oxide and Titanium Surfaces:An in vivo Study

To investigate the bacterial colonization on zirconium oxide and titanium surfaces in vivo quantitatively using a confocal laser scanning microscope （CLSM）. Ten samples of zirconium oxide ceramic and commercially pure titanium were fabricated and polished using silicon carbide abrasive paper. One sample from each group was evaluated topographic pattern under a scanning electron microscope. One sample from each group was to evaluate roughness using a profilometer. Eight volunteers were selected. The samples were cemented at the buccal surfaces of upper first molars. All samples were removed after 48 hours, immersed in SYTO-9 and propidium iodide fluorescent to stain for adherent bacteria and obseIved with CLSM. Fewer bacteria were observed in zirconia group than titanium group. However, there was no statistical difference between two groups. The experimental results demonstrate that zirconium oxide may be considered as a promising material for dental implant abutments.

拱顶石穿支岛状皮瓣在面部缺损修复重建中的应用进展

目前对于面部缺损的修复重建已有许多成熟的外科整复技术,如皮片移植、游离皮瓣移植和局部皮瓣移植等,均在其适用范围内取得了良好的效果。拱顶石穿支岛状皮瓣(KDPIF)作为一种局部皮瓣,具有设计简单、血供丰富、适用范围广等优点,但在面部缺损修复重建中的应用相对较少。鉴于其优点,该文作者认为KDPIF也是一个值得应用的面部缺损修复术式,作者对其设计原理、分型、手术技巧和应用、注意事项等进行了综述。