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HOME > Restor Dent Endod > Volume 28(5); 2003 > Article
Original Article Effect of a desensitizer on microtensile bond strength of different adhesives
Sung-Yeon Hwang, Kyung-Ha Lee, Mi-Kyung Yu, Kwang-Won Lee
2003;28(5):-384.
DOI: https://doi.org/10.5395/JKACD.2003.28.5.378
Published online: September 30, 2003

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Corresponding author (lkw@moak.chonbuk.ac.kr)

Copyright © 2003 Korean Academy of Conservative Dentistry

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  • This study evaluated the influence of a desensitizer(MS coat) on microtensile bond strength of different adhesives: a three-step adhesive(All-Bond 2), a two-step adhesive(Single Bond), a one-step adhesive(One-up Bond F).
    Non-caries extracted human molars were used. Dentin surface was obtained by horizontal section on midportion of crown using a water-cooled low speed diamond saw. Teeth were randomly divided into 6 group. AMO(MS coat + All Bond)-, SMO(MS coat + Single Bond)- and OMO(MS coat + One-up Bond F)-dentin surface were treated with 17% EDTA before bonded adhesive. AMX-, SMX- and OMX-dentin surface were bonded with All-Bond 2, Single Bond and One-up Bond F, respectively, with no previous treatment with MS coat and 17% EDTA. About 1cm high resin composite(Z-250™) were incrementally build-up on the treated surface. The specimens for the microtensile test were serially sectioned perpendicular to the adhesive layer to obtain 0.7×0.7 mm sticks. 30 sticks were prepared from each group.
    After that, tensile bond strength for each stick was measured with Microtensile Tester at a 1mm/min crosshead speed. Fractured dentin surfaces were observed under the SEM. The results were statistically analysed by using a One-way ANOVA and Tukey's test(p<0.05).
    Value in MPa were: AMO-44.35±13.21; SMO-39.35±13.32; OMO-31.07±10.25; AMX-49.22±16.38; SMX-56.02±13.35; OMX-72.93±16.19. Application of MS coat reduced microtensile bond strengths of both Single Bond and One-up Bond F, whereas microtensile bond strengths of All-Bond 2 were not affected significantly.
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Fig. 1
Schematic illustration of microtensile test
jkacd-28-378-g001.jpg
Fig. 2
Bar graph for comparison of microtensile bond strength of experimental groups.
jkacd-28-378-g002.jpg
Fig. 3
AMX group(×1000)
jkacd-28-378-g003.jpg
Fig. 4
AMO group(×1000)
jkacd-28-378-g004.jpg
Fig. 5
SMX group(×1000)
jkacd-28-378-g005.jpg
Fig. 6
SMO group(×1000)
jkacd-28-378-g006.jpg
Fig. 7
OMX group(×1000)
jkacd-28-378-g007.jpg
Fig. 8
OMO group(×1000)
jkacd-28-378-g008.jpg
Table 1
The composition of MS coat
jkacd-28-378-i001.jpg
Table 2
Materials used in this study
jkacd-28-378-i002.jpg
Table 3
Each group is classified as following
jkacd-28-378-i003.jpg
Table 4
Microtensile bond strength of experimental groups
jkacd-28-378-i004.jpg
Table 5
Comparison of microtensile bond strength among groups
jkacd-28-378-i005.jpg

Tables & Figures

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        Effect of a desensitizer on microtensile bond strength of different adhesives
        J Korean Acad Conserv Dent. 2003;28(5):378-384.   Published online September 30, 2003
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      Figure
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      Effect of a desensitizer on microtensile bond strength of different adhesives
      Image Image Image Image Image Image Image Image
      Fig. 1 Schematic illustration of microtensile test
      Fig. 2 Bar graph for comparison of microtensile bond strength of experimental groups.
      Fig. 3 AMX group(×1000)
      Fig. 4 AMO group(×1000)
      Fig. 5 SMX group(×1000)
      Fig. 6 SMO group(×1000)
      Fig. 7 OMX group(×1000)
      Fig. 8 OMO group(×1000)
      Effect of a desensitizer on microtensile bond strength of different adhesives

      The composition of MS coat

      Materials used in this study

      Each group is classified as following

      Microtensile bond strength of experimental groups

      Comparison of microtensile bond strength among groups

      Table 1 The composition of MS coat

      Table 2 Materials used in this study

      Table 3 Each group is classified as following

      Table 4 Microtensile bond strength of experimental groups

      Table 5 Comparison of microtensile bond strength among groups


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