金铂合金烤瓷冠对牙周组织的影响

背景：金属烤瓷冠的修复材料种类很多,每种材料的性能及对牙周组织细胞毒性影响均不相同。目的：观察金铂合金烤瓷冠修复后对牙周组织的影响。方法：选择2009-06/2010-01采用金铂合金烤瓷冠进行上颌切牙修复患者21例（26颗牙）,以患牙对侧的同名健康牙为对照牙。烤瓷冠戴入6～8个月后复诊。结果与结论：修复体边缘的深度及密合度均符合临床要求,修复后患牙的菌斑指数和龈沟液内血管内皮生长因子、肿瘤坏死因子α水平与对照牙比较,差异无显著性意义（P〉0.05）,但患牙探诊深度、龈沟内出血指数及龈沟液量明显高于对照牙,差异有显著性意义（P〈0.05）。说明金铂合金烤瓷冠对患牙牙周组织有一定的不良影响。

Effects of Au-Pt based porcelain-fused-metal crown on gingival health of the restored teeth

BACKGROUND：There are many types of porcelain-fused-metal（PFM） repair materials,each material has its own properties and toxic effects on periodontal tissue cells.OBJECTIVE：To explore the effect of Au-Pt based PFM crown on the periodontal tissue of restored teeth.METHODS：Twenty-six maxillary incisors that possessed Au-Pt based PFM crowns in 21 patients were involved in the study.The contralateral homonymy nature teeth were treated as control teeth.The patients were followed up 6 to 8 months after the placement of the crowns.RESULTS AND CONCLUSION：All of the restorations were clinically accepted,either in marginal depth or in marginal discrepancies.There were no significant differences of plaque index and the concentration of vascular endothelial growth factor and tumor necrosis factor-α between the test and the control teeth after the placement of Au-Pt based PFM crown（P 0.05）.However,the probing depth,sulcus bleeding index and gingival cervicular fluid volume of the test teeth were significantly higher than those of the control teeth（P 0.05）.Au-Pt based PFM crown has negative influences on gingival health of the restored teeth.