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The effect of different curing modes on composite resin/dentin bond strength in class icavities
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Original Article The effect of different curing modes on composite resin/dentin bond strength in class icavities
Shin-young Baek, Young-Gon Cho, Byeong-Choon Song
Journal of Korean Academy of Conservative Dentistry 2008;33(5):428-434.
DOI: https://doi.org/10.5395/JKACD.2008.33.5.428
Published online: September 30, 2008

Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea.

Corresponding Author: Young-Gon Cho. Department of Conservative Dentistry, College of Dentistry, Chosun University, 421 Seosuk-dong, Dong-gu, Gwangju, 501-825, Korea. Tel: +82-62-220-3840, 3845, Fax: +82-62-232-9064, ygcho@mail.chosun.ac.kr
• Received: March 19, 2008   • Revised: April 30, 2008   • Accepted: September 3, 2008

Copyright © 2008 The Korean Academy of Conservative Dentistry

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  • The purpose of this study was to compare the microtensile bond strength in Class I cavities associated with different light curing modes of same light energy density.
    Occlusal enamel was removed to expose a flat dentin surface and twenty box-shaped Class I cavities were prepared in dentin. Single Bond (3M Dental product) was applied and Z 250 was inserted using bulk technique. The composite was light-cured using one of four techniques; pulse delay (PD group), soft-start (SS group), pulse cure (PC group) and standard continuous cure (CC group). The light-curing unit capable of adjusting time and intensity (VIP, Bisco Dental product) was selected and the light energy density for all curing modes was fixed at 16 J/cm2. After storage for 24 hours, specimens were sectioned into beams with a rectangular cross-sectional area of approximately 1 mm2. Microtensile bond strength (µTBS) test was performed using a universal testing machine (EZ Test, Shimadzu Co.). The results were analyzed using oneway ANOVA and Tukey's test at significance level 0.05. The µTBS of PD group and SS group was higher than that of PC group and CC group.
    Within the limitations of this in vitro study, modification of curing modes such as pulse delay and soft start polymerization can improve resin/dentin bond strength in Class I cavities by controlling polymerization velocity of composite resin.
  • Keywords: Curing modes; Microtensile bond strength; Composite resin restorations; Class I cavities; Pulse delay; Soft start
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Figure 1
Specimen preparation for microtensile bond strength.
jkacd-33-428-g001.jpg
Figure 2
Mictotensile bond strength to dentin in each group.
jkacd-33-428-g002.jpg
Table 1
Group classification by light curing modes
jkacd-33-428-i001.jpg
Table 2
Mean microtensile bond strength of each group

Superscripts of the other letter indicate values of statistically significant difference (p < 0.05, Tukey test)

jkacd-33-428-i002.jpg

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        The effect of different curing modes on composite resin/dentin bond strength in class icavities
        J Korean Acad Conserv Dent. 2008;33(5):428-434.   Published online September 30, 2008
        DOI: https://doi.org/10.5395/JKACD.2008.33.5.428
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      The effect of different curing modes on composite resin/dentin bond strength in class icavities
      Image Image
      Figure 1 Specimen preparation for microtensile bond strength.
      Figure 2 Mictotensile bond strength to dentin in each group.

      Figure 1

      Figure 2

      The effect of different curing modes on composite resin/dentin bond strength in class icavities

      Group classification by light curing modes

      Mean microtensile bond strength of each group

      Superscripts of the other letter indicate values of statistically significant difference (p < 0.05, Tukey test)
      Table 1 Group classification by light curing modes

      Table 2 Mean microtensile bond strength of each group

      Superscripts of the other letter indicate values of statistically significant difference (p < 0.05, Tukey test)

      Table 1

      Table 2

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