不同类型种植体周围组织状况研究

An investigation on peri implant status in different types of dental implant

为监测种植体周围的组织状况，从而更好地对种植体进行维护，作者用临床、生化和微生物学方法，对１６例患者的１２个一阶段式种植体和２２个二阶段式种植体的周围组织状况进行了回顾性研究。结果：一阶段式种植体周围组织的各项临床指标、螺旋体比例及检出率均显著高于二阶段式种植体；两种类型种植体的龈沟液量及其中天冬氨酸转氨酶和碱性磷酸酶水平无明显差异；螺旋体检出阳性位点的炎症程度显著高于阴性位点。表明菌斑的堆积及牙周致病菌的存在与种植体周围组织的炎症有一定相关性。结果提示，菌斑控制及定期复查在种植体的维护中很重要。

Clinical, biochemical and microbiological methods were used to study the peri implant status in different types of dental implant. Sixteen normal healthy adults with 12 one stage implants and 22 two stage implants were included in this study. Clinical parameters, proportion of subgingival spirochetes, detection rate of spirochetes were found to be significantly higher around one stage implants than those around two stage implants. No significant difference in gingival crevicular fluid flow, levels of aspartate aminotransferase and alkaline phosphatase was found between these two types. The bleeding index score in sites which harbored spirochetes was significantly higher than that in sites without spirochetes. The present data suggested that accumulation of plaque and existance of periodontal pathogens maybe related to peri implant inflammation. This study suggests that plaque control and regular recall should be emphasized in implant maintenance.