摘要
目的探讨两种全瓷冠肩台设计形态对修复前、后龈沟液中Ⅱ型胶原酶(COL-Ⅱ)水平的影响。方法将要求上颌中切牙全瓷冠修复的就诊患者随机分为90度肩台组和凹形肩台组,每组20颗患牙。应用ELISA法测定修复前,修复粘固后1个月、3个月、6个月、12个月的龈沟液样本COL-Ⅱ水平,进行统计学处理。结果全瓷冠修复粘固后3个月,90°肩台组龈沟液COL-Ⅱ水平明显高于凹形肩台组,经t检验差别有统计学意义(P<0.05)。90度肩台组和凹形肩台组修复粘固后1个月和3个月与修复前、修复粘固后6个月、12个月均有差异(P<0.01)。90度肩台组和凹形肩台组修复粘固后6个月、12个月与修复前COL-Ⅱ水平无显著差异(P>0.05)。结论全瓷冠建议采用凹形肩台预备,牙周组织在全瓷冠修复后6个月可以恢复到修复前水平。
Objective To investigate the changes of the level of Ⅱ type collegenase （COL-Ⅱ） in gingival crevicular fluid （GCF） before and after restoration with two kinds of all-ceramic crown shouldered design.Methods The patients who received all ceramic crowns were divided randomly into 90° shoulder margin group and chamfer margin group,and each group with 20 teeth.The COL-Ⅱ level in GCF were analyzed before tooth preparation,one month,three months,six months and twelve months after all ceramic crown placement.The COL-Ⅱ level in GCF was detected by using ELISA method.Results According to 3 months after the crown restoration,the COL-Ⅱ level in GCF of 90° shoulder margin group was obviously higher than that of chamfer margin group,showing a statistic significance （P ＜ 0.05）.As to 6,12months after the crown restoration of two groups,the COL-Ⅱ level was different to that of two groups either before tooth reparation or 1,3 months after all ceramic crown cementation,showing a statistic significance also （P ＜0.01）.Two groups had no significant difference in the COL-Ⅱ level between 6,12 months after restoration and before tooth reparation.Conclusion The chamfer margin of all ceramic crown can be recommended use in clinic.The periodontal tissue can be recovered over six months after restoration.
出处
《哈尔滨医科大学学报》
CAS
北大核心
2013年第3期281-283,共3页
Journal of Harbin Medical University
基金
常州市科技局社会发展科技项目(CS20102023)
关键词
前牙
全瓷冠
边缘形态
Ⅱ型胶原酶
anterior teeth
all ceramic crown
marginal shape
Ⅱ type collagenase
