| 叶芳 廖小平 刘晓琼 陶天庆 邓荣春 杨健.两种金属烤瓷冠对牙周组织影响的比较研究[J].实用中西医结合临床,2012,(3):1-3 |
| 两种金属烤瓷冠对牙周组织影响的比较研究 |
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| DOI： |
| 中文关键词: 金属烤瓷冠 钴铬合金 金合金 牙周指数 牙周致病菌 |
| 英文关键词: Porcelain fused to metal crown Co-Cr alloy Gold alloy Periodontal index Periodontopathic bacteria |
| 基金项目:江西省科技厅课题基金资助（编号2008BB28700） |
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| 中文摘要: |
| 目的：探讨钴铬合金和金合金烤瓷冠修复后，患牙各项牙周指数及龈沟液中牙周可疑致病菌检出率的变化，以评价两种合金作为烤瓷冠内冠材料对牙周组织的影响。方法：选择采用钴铬合金和金合金烤瓷冠修复并符合纳入标准的患牙各15颗。于修复前和修复6个月后，临床对比患牙牙周探诊深度、菌斑指数、龈沟出血指数的变化。同时用PCR检测患牙龈沟液中Pg、Aa 阳性率的变化。结果：钴铬合金烤瓷冠修复6个月后，牙周探诊深度和龈沟出血指数与修复前比较差异具有显著性意义(P <0.05)，菌斑指数差异无显著性意义(P >0.05)；龈沟液中Pg的阳性率较修复前显著性增高(P <0.05)，而Aa 的阳性率无显著性差异(P >0.05）。金合金烤瓷冠修复6个月后，牙周探诊深度与修复前比较差异有显著性意义(P <0.05)，菌斑指数和龈沟出血指数差异均无显著性意义(P >0.05)；牙龈沟液中Pg 和Aa的阳性率增高无统计学意义(P >0.05)。结论：钴铬合金烤瓷冠对牙周健康具有一定程度的不良影响，金合金是理想的金属烤瓷冠材料。 |
| 英文摘要: |
| Objective:To evaluate the influence of cobalt-chromium(Co-Cr) alloy and gold alloy as the materials of inner crown on periodontal tissue through detecting the changes of periodontal indexs and the positive rates of periodontopathic bacteria after repairing. Methods:Thirty clinical diseased teeth were chosen in this study.Fifteen teeth were repaired with Co-Cr alloy porcelain crown,the other were repaired with gold alloy porcelain crown.Follow-up visits were performed at six months postoperation.The changes of periodontal probing depth,plaque index and sulcus bleeding index were observed. Gingival crevicular fluid (GCF) was collected for detecting the positive rates of Pg and Aa by PCR. Results:In the Co-Cr alloy porcelain crown group,there were significant differences in periodontal probing depth and sulcus bleeding index between pre- and post-restoration(P <0.05), while no significant difference was found in plaque index(P >0.05); the positive rate of Pg in GCF was significantly increased after six months(P <0.05),while there was no significant difference in Aa(P >0.05).In the gold alloy porcelain crown group,there was significant difference in periodontal probing depth between pre- and post-restoration(P <0.05), while no significant difference was found in plaque index and sulcus bleeding index(P >0.05);there was no significant differences in the positive rate of Pg and Aa in GCF after six months(P >0.05).Conclusion:The Co-Cr alloy porcelain crown may have an adverse effect on periodontal tissue to a certain degree, while gold alloy is an ideal substrate material of porcelain fused to metal crown. |
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