不同材料的全冠边缘对Beagle犬牙周环境的影响  

Influence of Full Crown Margin on Periodontal Conditions.

作　　者：黄常伟[1] 马守治[1] 闫福华[1] 程辉[1] 石晓玉[1] 赵欣[1] 

机构地区：[1]福建医科大学附属口腔医院修复科,福建福州350002

出　　处：《口腔医学研究》2006年第2期140-142,共3页Journal of Oral Science Research

基　　金：福建省科技厅重点项目(编号:2002Y017)

摘　　要：目的:探讨不同材料的全冠边缘对Beagle犬牙周环境的影响。方法:用手用洁治器对4只Beagle犬行全口龈上洁治、龈下刮治。3周后,对49颗犬牙行瓷熔附金属(porcelain fused m etal,PFM)冠修复术。于牙体预备前和PFM粘固后4周,分别记录实验牙菌斑指数(p laque index,PLI)、牙周探诊深度(prob ing depth,PD)、龈沟出血指数(su lcus b leed ing index,SB I),测量龈沟液量(gingival crevicu lar flu id,GCF),并检测龈沟液中天冬氨酸转氨酶(as-partate am inotransferase,AST)的水平。整个实验过程中每周给予旋转刷牙法刷牙1次。结果:结果表明,PFM冠粘固后第4周,舌侧牙龈的PD、PLI≥1的频率、GCF量、SB I≥2频率、AST活性明显增加(P<0.01);颊侧牙龈的PD、PLI≥1的频率、GCF量均无明显变化,SB I≥2的频率、AST活性明显增加(P<0.05);两组GCF量、SB I≥2频率、AST活性有明显的差异(P<0.05)。结论:每周给Beagle犬刷牙1次,PFM冠粘固后第4周,烤瓷边缘和金属边缘对应的牙周组织炎症均明显加重,金属边缘对应的牙周组织尤为明显。可能是由于金属表面和烤瓷表面容易形成菌斑。Objectives： To evaluate the influence of PFM crown margin on periodontal conditions in beagle dogs. Methods： Four beagle dogs were utilized in this study. Three weeks after commencing oral hygiene procedures through supragingival scaling and subgingival scaling, forty - nine dog teeth were prepared for receiving porcelain fused metal （ PFM ） crowns. One week later, the PFM crowns were cemented, whose buccal margins were made of porcelain fused to metal （PFM） and lingual margins were metal. Clinical parameters were recorded on all test teeth immediately before tooth preparation and after 4 weeks of cementation of PFM crowns. During the studying period, professional oral hygiene was performed for the Beagles dogs one time a week. Results： The results of animal research were that the volumn of GCF, the frequency of PLI≥1 and SBI≥2,PD and the activity of AST in GCF increased significantly for the group of lingual gingiva （P 〈0. 01 ） in the time of four weeks after cementation of crowns. For the buccal gingiva margin, the activity of GCF - AST and the frequency of SBI≥2 increased significantly （P 〈 0.05 ）, but PD, GCF and the frequency of PLI≥1 didnt change significantly. The difference of GCF, the activity of GCF -AST and the frequency of SBI≥2 between two groups are significant after 4 weeks of cementation of crowns （ P 〈 0. 05 ）. Conclusion ： When professional oral hygiene was performed once a week, both PFM and metal margins could contribute to periodontal inflammation. The metal induced more inflammation than PFM. This might be that plaque adhered more on metal induced more.

关 键 词：全冠边缘 牙周环境 龈沟液 天冬氨酸转氨酶 

分 类 号：R783[医药卫生—口腔医学]