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HOME > Restor Dent Endod > Volume 31(6); 2006 > Article
Original Article The effect of C-factor and volume on microleakage of composite resin restorations with enamel margins
Bong-Joo Koo, Dong-Hoon Shin
2006;31(6):-459.
DOI: https://doi.org/10.5395/JKACD.2006.31.6.452
Published online: November 30, 2006

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Corresponding Author: Dong-Hoon Shin. Department of Conservative Dentistry College of Dentistry, Dankook University 7-1 Shinbu-dong, Cheonan, Korea. Tel: 82-41-550-1965, Fax: 82-41-550-1963, donyshin@dankook.ac.kr
• Received: September 4, 2006   • Revised: October 30, 2006   • Accepted: November 4, 2006

Copyright © 2006 Korean Academy of Conservative Dentistry

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  • Competition will usually develop between the opposing walls as the restorative resin shrinks during polymerization. Magnitude of this phenomenon may be depended upon cavity configuration and volume.
    The purpose of this sturdy was to evaluate the effect of cavity configuration and volume on microleakage of composite resin restoration that has margins on the enamel site only.
    The labial enamel of forty bovine teeth was ground using a model trimmer to expose a flat enamel surface. Four groups with cylindrical cavities were defined, according to volume and configuration factor (Depth × Diameter / C-factor) - Group I: 1.5 mm × 2.0 mm / 4.0, Group II: 1.5 mm × 6.0 mm / 2.0, Group III: 2.0 mm × 1.72 mm / 5.62, Group IV: 2.0 mm × 5.23 mm / 2.54.
    After treating with fifth-generation one-bottle adhesive - BC Plus™ (Vericom, AnYang, Korea), cavities were bulk filled with microhybrid composite resin - Denfill™ (Vericom). Teeth were stored in distilled water for one day at room temperature and were finished and polished with Sof-Lex system. Specimens were thermocycled 500 times between 5℃ and 55℃ for 30 second at each temperature.
    Teeth were isolated with two layers of nail varnish except the restoration surface and 1 mm surrounding margins. Electrical conductivity (µA) was recorded in distilled water by electrochemical method. Microleakage scores were compared and analyzed using two-way ANOVA at 95% level.
    The results were as follows:
    1. Small cavity volume showed lower microleakage score than large one, however, there was no statistically significant difference.
    2. There was no relationship between cavity configuration and microleakage.
    Factors of cavity configuration and volume did not affect on microleakage of resin restorations with enamel margins only.
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Figure 1
Schematic drawing of electrochemical test.
jkacd-31-452-g001.jpg
Table 1
Composition of Composite and Adhesive used
jkacd-31-452-i001.jpg
Table 2
Classification according to Cavity Volume and C-factor
jkacd-31-452-i002.jpg
Table 3
Currents and statistical result with Volume (µA)

Significant difference at p* < 0.05

jkacd-31-452-i003.jpg
Table 4
Currents and statistical result with C-factor (µA)

Significant difference at p* < 0.05

jkacd-31-452-i004.jpg

Tables & Figures

REFERENCES

    Citations

    Citations to this article as recorded by  
    • Influence of rebonding procedures on microleakage of composite resin restorations
      Mi-Ae Lee, Duck-Kyu Seo, Ho-Hyun Son, Byeong-Hoon Cho
      Journal of Korean Academy of Conservative Dentistry.2010; 35(3): 164.     CrossRef
    • Microleakage of the experimental composite resin with three component photoinitiator systems
      Ji-Hoon Kim, Dong-Hoon Shin
      Journal of Korean Academy of Conservative Dentistry.2009; 34(4): 333.     CrossRef
    • A survey on the use of composite resin in Class II restoration in Korea
      Dong-Ho Shin, Se-Eun Park, In-Seok Yang, Juhea Chang, In-Bog Lee, Byeong-Hoon Cho, Ho-Hyun Son
      Journal of Korean Academy of Conservative Dentistry.2009; 34(2): 87.     CrossRef
    • Difference in bond strength according to filling techniques and cavity walls in box-type occlusal composite resin restoration
      Eun-Joo Ko, Dong-Hoon Shin
      Journal of Korean Academy of Conservative Dentistry.2009; 34(4): 350.     CrossRef

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      The effect of C-factor and volume on microleakage of composite resin restorations with enamel margins
      J Korean Acad Conserv Dent. 2006;31(6):452-459.   Published online November 30, 2006
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    The effect of C-factor and volume on microleakage of composite resin restorations with enamel margins
    Image
    Figure 1 Schematic drawing of electrochemical test.
    The effect of C-factor and volume on microleakage of composite resin restorations with enamel margins

    Composition of Composite and Adhesive used

    Classification according to Cavity Volume and C-factor

    Currents and statistical result with Volume (µA)

    Significant difference at p* < 0.05

    Currents and statistical result with C-factor (µA)

    Significant difference at p* < 0.05

    Table 1 Composition of Composite and Adhesive used

    Table 2 Classification according to Cavity Volume and C-factor

    Table 3 Currents and statistical result with Volume (µA)

    Significant difference at p* < 0.05

    Table 4 Currents and statistical result with C-factor (µA)

    Significant difference at p* < 0.05


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