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Original Article INFLUENCE OF APPICATION TIME OF SELF-ETCHING PRIMERS ON DENTINAL MICROTENSILE BOND STRENGTH
Young-Gon Cho,*, Young-Gon Lee, Jong-Uk Kim, Byung-Cheul Park, Jong-Jin Kim, Hee-Young Choi, Cheul-Hee Jin, Sang-Hoon Yoo
J Korean Acad Conserv Dent 2004;29(5):-438.
DOI: https://doi.org/10.5395/JKACD.2004.29.5.430
Published online: January 14, 2004

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*Corresponding author: Young-Gon Cho, Department of Conservative Dentistry, College of Dentistry, Chosun University 421 Seosuk-dong, Dong-gu, Gwangju, Korea, 501-825, Tel : 82-62-220-3840 Fax : 82-62-232-9064, E-mail: ygcho@mail.chosun.ac.kr

Copyright © 2004 The Korean Academy of Conservative Dentistry

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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  • This study evaluated the influence of application time of self-etching primers on microtensile bond strength (μTBS) to dentin using three self-etching primer adhesive systems.
    Dentin surfaces were exposed from forty-eight human molars. They were conditioned with three self-etching primers (Clearfil SE Bond [SE], Unifil Bond [UF], Tyrian SPE + One Step Plus [TY]) and different primining times (10s, 20s, 30s and 40s). Composite resins were bonded to dentin surfaces and specimens were made. μTBS was tested and statistically compared using by one-way ANOVA and Tukey’s Test.
    The results of this study presented that priming time for 10s in SE and UF groups and for 30s and 40s in TY group was highly decreased μTBS to dentin.
Figure 1.
Specimen adhered to the testing apparatus
jkacd-29-430f1.jpg
Figure 2.
EZ test for microtensile bond strength test
jkacd-29-430f2.jpg
Figure 3.
Microtensile bond strength (MPa) of each group according to priming times of three self-etching primer adhesives to dentin
jkacd-29-430f3.jpg
Table 1.
Self-etching primer adhesives, components, pH of primers and manufacturers
Adhesives Component pH Manufacturers
Primer Bonding agent
Clearfil SE Bond (SE) MDP, HEMA, water, hydrophilic DMA, photoinitiator MDP, HEMA, hydrophilic DMA, microfiller, photoinitiator 1.9 Kuraray Medical Inc., Okayama, Japan

Unifil Bond (UF) 4-MET, HEMA, ethanol, water, initiator UDMA, HEMA, TEGDMA 2.2 GC Co., Tokyo, Japan

Tyrian SPE + One-Step Plus (TY) 2-acrylamido-2-methyl propanesulfonic acid, Bis (2 methacryloyloxy) ethyl) phosphate, ethanol BPDM, HEMA, acetone, glass frit, photoinitiator 0.4 Bisco, Inc., Schaumburg, IL, U.S.A.

MDP = 10-methacryloyloxydecyl dihydrogen phophate, DMA = dimethacrylate, HEMA = 2 hydroxyethyl methacrylate, 4-MET = 4-methacryloxyethyl trimellitic acid, UDMA = urethane dimethacrylate, TEGDMA = triethylene glycol dimethacrylate, BPDM = biphenyl dimethacrylate

Table 2.
Microtensile bond strength (MPa) and statistical analysis according to adhesives and priming times
Group Priming time Microtensile strength (mean ± S.D.) Number of specimens
SE group 10 seconds 33.78 ± 7.20a 20
20 seconds 73.22 ± 15.10b 20
30 seconds 62.80 ± 15.01b 20
40 seconds 65.53 ± 18.44b 20

UF group 10 seconds 22.87 ± 6.53c 20
20 seconds 40.04 ± 12.50d 20
30 seconds 46.28 ± 9.13d 20
40 seconds 41.19 ± 12.00d,g 20

TY group 10 seconds 47.34 ± 8.19d,f 20
20 seconds 53.16 ± 17.95f 20
30 seconds 33.98 ± 20.17a 20
40 seconds 31.25 ± 13.09a,g 20

S.D.: Standard Deviation. Superscripts of the same letter indicate values of no statistical significant difference (p > 0.05).

Table 3.
Statistical analysis of mean microtensile bond strength (MPa) at the same priming time
Priming time Microtensile bond strength No. of total specimens
10 seconds 34.66 ± 12.40a 60
20 seconds 55.47 ± 20.42b 60
30 seconds 47.71 ± 19.42b,c 60
40 seconds 45.99 ± 20.54c 60

Superscripts of the same letter indicate values of no statistical significant difference (p > 0.05).

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      INFLUENCE OF APPICATION TIME OF SELF-ETCHING PRIMERS ON DENTINAL MICROTENSILE BOND STRENGTH
      J Korean Acad Conserv Dent. 2004;29(5):430-438.   Published online January 14, 2004
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    INFLUENCE OF APPICATION TIME OF SELF-ETCHING PRIMERS ON DENTINAL MICROTENSILE BOND STRENGTH
    Image Image Image
    Figure 1. Specimen adhered to the testing apparatus
    Figure 2. EZ test for microtensile bond strength test
    Figure 3. Microtensile bond strength (MPa) of each group according to priming times of three self-etching primer adhesives to dentin
    INFLUENCE OF APPICATION TIME OF SELF-ETCHING PRIMERS ON DENTINAL MICROTENSILE BOND STRENGTH
    Adhesives Component pH Manufacturers
    Primer Bonding agent
    Clearfil SE Bond (SE) MDP, HEMA, water, hydrophilic DMA, photoinitiator MDP, HEMA, hydrophilic DMA, microfiller, photoinitiator 1.9 Kuraray Medical Inc., Okayama, Japan

    Unifil Bond (UF) 4-MET, HEMA, ethanol, water, initiator UDMA, HEMA, TEGDMA 2.2 GC Co., Tokyo, Japan

    Tyrian SPE + One-Step Plus (TY) 2-acrylamido-2-methyl propanesulfonic acid, Bis (2 methacryloyloxy) ethyl) phosphate, ethanol BPDM, HEMA, acetone, glass frit, photoinitiator 0.4 Bisco, Inc., Schaumburg, IL, U.S.A.
    Group Priming time Microtensile strength (mean ± S.D.) Number of specimens
    SE group 10 seconds 33.78 ± 7.20a 20
    20 seconds 73.22 ± 15.10b 20
    30 seconds 62.80 ± 15.01b 20
    40 seconds 65.53 ± 18.44b 20

    UF group 10 seconds 22.87 ± 6.53c 20
    20 seconds 40.04 ± 12.50d 20
    30 seconds 46.28 ± 9.13d 20
    40 seconds 41.19 ± 12.00d,g 20

    TY group 10 seconds 47.34 ± 8.19d,f 20
    20 seconds 53.16 ± 17.95f 20
    30 seconds 33.98 ± 20.17a 20
    40 seconds 31.25 ± 13.09a,g 20
    Priming time Microtensile bond strength No. of total specimens
    10 seconds 34.66 ± 12.40a 60
    20 seconds 55.47 ± 20.42b 60
    30 seconds 47.71 ± 19.42b,c 60
    40 seconds 45.99 ± 20.54c 60
    Table 1. Self-etching primer adhesives, components, pH of primers and manufacturers

    MDP = 10-methacryloyloxydecyl dihydrogen phophate, DMA = dimethacrylate, HEMA = 2 hydroxyethyl methacrylate, 4-MET = 4-methacryloxyethyl trimellitic acid, UDMA = urethane dimethacrylate, TEGDMA = triethylene glycol dimethacrylate, BPDM = biphenyl dimethacrylate

    Table 2. Microtensile bond strength (MPa) and statistical analysis according to adhesives and priming times

    S.D.: Standard Deviation. Superscripts of the same letter indicate values of no statistical significant difference (p > 0.05).

    Table 3. Statistical analysis of mean microtensile bond strength (MPa) at the same priming time

    Superscripts of the same letter indicate values of no statistical significant difference (p > 0.05).


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