不同材料冠修复对病人牙周健康的影响

目的:对比镍铬合金烤瓷冠、钴铬合金烤瓷冠及二氧化锆全瓷冠修复对病人牙周健康的影响.方法:选取要求冠修复病人58例,分为镍铬合金烤瓷冠组(A组)25例,钴铬合金烤瓷冠组(B组)21例,二氧化锆全瓷冠组(C组)12例,用不同材料制作牙冠戴入.半年后检查各组病人的牙龈出血指数、菌斑指数、牙周探诊深度、龈沟液分泌量及龈沟液内白细胞介素(IL)-8含量变化.结果:半年后3组菌斑指数和牙周探针深度较修复前无明显变化,A组和B组的牙龈出血指数、龈沟液分泌量及龈沟液中IL-8含量均明显升高(P<0.01).C组各项指标均与修复前差异无统计学意义(P>0.05).A组修复后龈沟液分泌量较B组和C组差异均有统计学意义(P<0.01),B组和C组之间龈沟液分泌量差异无统计学意义(P>0.05).A组病人修复后IL-8分泌量较B组和C组显著增加(P<0.01),B组与C组IL-8分泌量差异亦有统计学意义(P<0.05).结论:3种材料冠修复后均对病人牙周有一定不利影响,二氧化锆全瓷冠对牙周的不利影响最小.

Effect of different material crown restorations on the periodontic tissue health

Objective:To investigate the effects of the nickel-chrome(Ni-Cr)alloy porcelain crown,Co-Cr alloy porcelain crown and Zirconia all-ceramic restoration on periodontic tissue health.Methods:Fifty-eight patients were divided into the nickel-chrome(Ni-Cr)alloy crown restoration group(25 cases,group A),cobalt-chromium(Co-Cr)alloy crown restoration group(21 cases,group B)and Zirconia all-ceramic crown restoration group(12 cases,group C).The gingival bleeding index,plaque index(PLI),periodontal probing depth(PD)and gingival crevicalar fluid(GCF)and level of interleukin-8(IL-8)in gingival crevicalar fluid in three groups were detected after half a year of treatment.Results:There were no statistical significance in the PD and PLI between before and after half a year of restoration in three groups.The gingival bleeding index,amount of GCF and level of IL-8 in gingival crevicalar fluid in group A and group B increased after restoration(P<0.01).The difference of each indictor in group C between before and after restoration was not statistically significant(P>0.05).The difference of the amount of gingival crevicalar fluid between group A,and group B or C was statistically significant(P<0.01),the difference of the amount of gingival crevicalar fluid between group B and group C was not statistically significant(P>0.05).The level of IL-8 in group A after restoration significantly increased compared with the group B and group C(P<0.01),and the difference of the level of IL-8 between group B and group C was statistically significant(P<0.05).Conclusions:Three material restorations have a certain adverse influence on periodontic tissue,and the adverse effect of Zirconia all-ceramic restoration is minimum.