Microleakage of various composite resin systems.
10.5395/JKACD.2003.28.2.127
- Author:
In Soo KIM
1
;
Kyung San MIN
;
Dong Hoon SHIN
Author Information
1. Department of Conservative Dentistry, School of Dentistry, Dankook University, Korea. donyshin@dankook.ac.kr
- Publication Type:Original Article
- Keywords:
Microleakage;
Electrical conductivity;
Multistep;
One-bottle;
Self-etching;
Microamphere
- MeSH:
Electric Conductivity;
Sodium Chloride;
Tooth
- From:Journal of Korean Academy of Conservative Dentistry
2003;28(2):127-133
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The object of this study was to compare the microleakage between various composite resin systems of multistep, one-bottle, and self-etching systems using electrical conductivity. After making class V cavities (4x3x1.5 mm around CEJ), they were bulk filled with three kinds of resins of A3. Teeth were storaged in a saline solution for one day, after then, they were finished and polished using Sof-Lex system. Another stress of thermocycling was made for 500 times from 5degrees to 55degrees C with each dwelling time of 10 seconds. Electrical conductivity (microamphere, microA) was checked four times: before and after cavity preparation, after filling, after thermocycling. One-way ANOVA and 95% Scheffe Post Hoc test was used for checking any statistical difference among groups. Another 95% Paired Samples T-test was also used for estimating any significant difference within group after cavity filling or thermocycling. The results were as follows: 1. Every specimen showed various range of microleakage after filling. There was, however, no difference between composite resin systems. 2. All composite resin systems showed marked increase in microleakage with a thermocycling (p<0.05), there was, however, no difference between composite resin systems. 3. Although there was no significant difference between groups (p=0.078), one-bottle and self-etching systems seemed to be unstable than multistep system. Within the limits of this study, it was concluded that much more consideration should be needed when using thermally unstable one-bottle and self-etching systems that have multi-advantages from simplified step. More studies will be needed to solve these kinds of problems.
