2种橡皮圈在人工唾液条件下力值衰减的对比研究  

Investigation of Force Decay of Superslick Modules and Regular Modules in Artificial Saliva

作　　者：莫静[1] 吴建勇[2] 唐镇[2] 葛光华[3] 江小平[3] 

机构地区：[1]广州医学院口腔医院牙周科,广东广州510140 [2]南昌大学口腔医院 [3]广东工业大学医院

出　　处：《广东牙病防治》2011年第1期10-13,共4页Journal of Dental Prevention and Treatment

基　　金：广东省医学科学技术研究基金(A2009307)

摘　　要：目的探讨人工唾液条件下,超滑结扎橡皮圈和常规结扎橡皮圈在不同时间段力值的衰减情况。方法选用同一厂家生产的相同内径、外径、厚度的超滑结扎橡皮圈和常规结扎橡皮圈,利用Instron万能材料力学实验机,测量两种橡皮圈在人工唾液条件下,模拟结扎在MBTTM直丝弓托槽上时,8个时间段(0、1、24h,1、2、3、4、6周)力值的衰减。结果最初1h,超滑结扎橡皮圈力值衰减为22.04%,常规结扎橡皮圈为30.30%,超滑结扎橡皮圈小于常规结扎橡皮圈。两种材料橡皮圈力值衰减的趋势是一致的,最初1h产生了快速的力值衰减,以后逐渐平稳不再有太大的变化。人工唾液条件下不同时间段超滑结扎橡皮圈和常规结扎橡皮圈力值衰减的差异无统计学意义(P=0.077)。结论超滑结扎橡皮圈和常规结扎橡皮圈在人工唾液条件下结扎在MBTTM直丝弓托槽上时,8个时间段的力值衰减形式一致。Objective The objective of this study was to examine and compare the force decay of Superslick modules with that of regular uncoated modules in artificial saliva（0 hour,1 hour,24 hours,1 week,2 weeks,3 weeks,4 weeks,6 weeks）.Methods Superslick modules and regular uncoated modules made by the same factory with identical inside diameter,outside diameter,and thickness were selected.Simulated Superslick modules and regular uncoated modules ligated in the MBTTM pre-adjusted brackets,the force decays were tested by the Instron Universal Testing Machine at eight different time points under artificial saliva condition.Results The force decay of Superslick modules and regular modules was 22.04% and 30.30% respectively in the first 1 hours.The rapid force decay occurred in the first 1 hour and then the decrease became slower and slower in the following week until at last it gradually get steady with no obvious changes.There was no significant difference in force decay between Superslick modules and regular uncoated modules in different times in artificial saliva.Conclusion Simulated Superslick modules and regular uncoated modules ligated in the MBTTM pre-adjusted brackets,the pattern was similar in force decay between Superslick modules and regular uncoated modules in different time points in artificial saliva.

关 键 词：超滑结扎橡皮圈 常规结扎橡皮圈 力值衰减 

分 类 号：R783.5[医药卫生—口腔医学]