Microleakage of various composite resin systems

In-Soo Kim; Kyung-San Min; Dong-Hoon Shin

doi:10.5395/JKACD.2003.28.2.127

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Original Article Microleakage of various composite resin systems: In-Soo Kim, Kyung-San Min, Dong-Hoon Shin; 2003;28(2):-133.
DOI: https://doi.org/10.5395/JKACD.2003.28.2.127
Published online: March 31, 2003

Department of Conservative Dentistry, School of Dentistry, Dankook University, Korea.

Corresponding author (donyshin@dankook.ac.kr)

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Abstract
REFERENCES

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 (4×3×1.5 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 5° to 55℃ with each dwelling time of 10 seconds. Electrical conductivity (microamphere, µA) 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.
Keywords: Microleakage; Electrical conductivity; Multistep; One-bottle; Self-etching; Microamphere

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Fig. 1

Diagram of electrical conductivity test

Fig. 2

Changing pattern of microleakage(electric conductivity)

Table 1

Materials and surface treatments

Table 2

Microleakage before and after cavity preparation Mean (S.D.); µA

Table 3

Microleakage after composite filling Mean (S.D.); µA

Table 4

Microleakage after thermocycling Mean (S.D.); µA

^*:p < 0.05 ^**:p < 0.01

Tables & Figures

REFERENCES

Citations

Citations to this article as recorded by

Effect of a new resin monomer on the microleakage of composite resin restorations
JH Bae, YK Kim, PY Yoon, MA Lee, BH Cho
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Microhardness and microleakage of composite resin cured by visible light with various band of wavelength
Soo-Man Park, Jae-Yong Lee, Seung-Ryul Han, Sang-Yoon Ha, Dong-Hoon Shin
Journal of Korean Academy of Conservative Dentistry.2002; 27(4): 403. CrossRef

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