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HOME > Restor Dent Endod > Volume 29(2); 2004 > Article
Original Article A study on the material properties of various composite resins for core build-up
Soo-Il Shin, Dong-Hoon Shin
2004;29(2):-199.
DOI: https://doi.org/10.5395/JKACD.2004.29.2.191
Published online: March 31, 2004

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Corresponding author: Dong-Hoon Shin. Department of Conservative Dentistry, School of Dentistry, Dankook University, San 7-1, Shinbu-dong, CheanAn, ChungNam, Korea, 330-716. Tel: 82-41-550-1965, Fax: 82-41-550-1963, donyshin@dku.edu

Copyright © 2004 Korean Academy of Conservative Dentistry

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  • The purposes of this study were to estimate the material properties of the recently developed domestic composite resins for core filling material (Chemical, Dual A, Dual B; Vericom, Korea) and to compare them with other marketed foreign products (CorePaste, Den-Mat, USA; Ti-Core, Essential Dental Systems, USA; Support, SCI-Pharm, USA). Six assessments were made; working time, setting time, depth of polymerization, flexural strength, bonding strength, and marginal leakage. All items were compared to ISO standards.
    All domestic products satisfied the minimum requirements from ISO standards (working time: above 90 seconds, setting time: within 5 minutes), and showed significantly higher flexural strength than Core Paste. Dual A and B could, especially, reduce the setting time to 60 seconds when cured with 600 mW/cm2 light intensity. All experimental materials showed 6 mm depth of polymerization.
    Bond strengths of Ti-Core and Dual B materials were significantly higher than the other materials. Furthermore, three domestic products and Ti-Core could reduce the microleakage effectively.
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Figure 1
Ti-Core: Temperature changes during auto or chemically cure
jkacd-29-191-g001.jpg
Table 1
Materials used in the study
jkacd-29-191-i001.jpg
Table 1
Work Time of materials (seconds)
jkacd-29-191-i002.jpg
Table 2
Setting time when auto-cured (seconds)
jkacd-29-191-i003.jpg
Table 3
Maximum setting temperature when auto-cured (℃)

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

jkacd-29-191-i004.jpg
Table 4
Setting time when light cured (seconds)

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

jkacd-29-191-i005.jpg
Table 5
Maximum setting temperature when light cured (℃)

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

jkacd-29-191-i006.jpg
Table 6
Flexural Strength of core materials (MPa)

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

jkacd-29-191-i007.jpg
Table 7
Adhesive strength of core materials (Kgf)

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

jkacd-29-191-i008.jpg
Table 8
Microleakage scores

Mean values designated with the same superscript letter are not statistically different (p > 0.05)

jkacd-29-191-i009.jpg

Tables & Figures

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    • Effect of surface treatments of fiber posts on bond strength to composite resin cores
      Hye-Jo Keum, Hyun-Mi Yoo
      Journal of Korean Academy of Conservative Dentistry.2010; 35(3): 173.     CrossRef

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      J Korean Acad Conserv Dent. 2004;29(2):191-199.   Published online March 31, 2004
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    A study on the material properties of various composite resins for core build-up
    Image
    Figure 1 Ti-Core: Temperature changes during auto or chemically cure
    A study on the material properties of various composite resins for core build-up

    Materials used in the study

    Work Time of materials (seconds)

    Setting time when auto-cured (seconds)

    Maximum setting temperature when auto-cured (℃)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Setting time when light cured (seconds)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Maximum setting temperature when light cured (℃)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Flexural Strength of core materials (MPa)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Adhesive strength of core materials (Kgf)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Microleakage scores

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Table 1 Materials used in the study

    Table 1 Work Time of materials (seconds)

    Table 2 Setting time when auto-cured (seconds)

    Table 3 Maximum setting temperature when auto-cured (℃)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Table 4 Setting time when light cured (seconds)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Table 5 Maximum setting temperature when light cured (℃)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Table 6 Flexural Strength of core materials (MPa)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Table 7 Adhesive strength of core materials (Kgf)

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)

    Table 8 Microleakage scores

    Mean values designated with the same superscript letter are not statistically different (p > 0.05)


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