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HOME > Restor Dent Endod > Volume 28(1); 2003 > Article
Original Article Morphological patterns of self-etching primers and self-etching adhesive bonded to tooth structure
Young-Gon Cho, Seok-Jong Lee, Jin-Ho Jeong, Young-Gon Lee, Soo-Mee Kim
2003;28(1):-33.
DOI: https://doi.org/10.5395/JKACD.2003.28.1.023
Published online: January 31, 2003

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Corresponding author (ygcho@mail.chosun.ac.kr)

Copyright © 2003 Korean Academy of Conservative Dentistry

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  • The purpose of this study was to compare in vitro interfacial relationship of restorations bonded with three self-etching primer adhesives and one self-etching adhesive.
    Class I cavity preparations were prepared on twenty extracted human molars. Prepared teeth were divided into four groups and restored with four adhesives and composites: Clearfil SE Bond/Clearfil™ AP-X (SE), UniFil Bond/UniFil® F (UF), FL Bond/Filtek™ Z 250 (FL) and Prompt L-Pop/Filtek™ Z 250 (LP)
    After storing in distilled water of room temperature for 24 hours, the specimens were vertically sectioned and decalcified. Morphological patterns between the enamel/dentin and adhesives were observed under SEM.
    The results of this study were as follows;
    1. They showed close adaptation between enamel and SE, UF and FL except for LP.
    2. The hybrid layer in dentin was 2 µm thick in SE, 1.5 µm thick in UF, and 0.4 µm in both FL and LP. So, the hybrid layers of SE and UF were slightly thicker than that of FL and LP.
    3. The lengths and diameters of resin tags in UF and FL were similar, but those of LP were slightly shorter and slenderer than those of SE.
    4. The resin tags were long rod shape in SE, and funnel shape in other groups.
    Within the limitations of this study, it was concluded that self-etching primer adhesives showed close adaptation on enamel. In addition, the thickness of hybrid layer ranged from 0.4-1.5 µm between adhesives and dentin. The resin tags were long rod or funnel shape, and dimension of them was similar or different among adhesives.
  • Keywords: Morphological patterns; Self-etching primer adhesive; Self-etching adhesive; SEM; Hybrid layer; Resin tags
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Fig. 1
Enamel (E)-Clearfil SE Bond (SE) interface showed close adaptation. (SEM×1,500)
jkacd-28-23-g001.jpg
Fig. 2
Clearfil SE Bond showing 2 µm thick hybrid layer (h) with numerous resin tags (t). (SEM×1,500)
jkacd-28-23-g002.jpg
Fig. 3
Higher magnification of Clearfil SE Bond showing long rod shaped resin tags (5-15 µm long). Diameter of resin tags was 2.3 µm thick at the base and 1.3 µm thick at the end. (SEM×3,500)
jkacd-28-23-g003.jpg
Fig. 4
Enamel (E)-UniFil Bond (UF) interface showed close adaptation and thick adhesive layer (a) between resin (R) and UF. (SEM×1,500)
jkacd-28-23-g004.jpg
Fig. 5
UniFil Bond (UF) showing 1.5 µm thick hybrid layer (h) with few resin tags(t). (SEM×1,500)
jkacd-28-23-g005.jpg
Fig. 6
Higher magnification of UniFil Bond (UF) showing long funnel shaped resin tags (3-12 µm long). Diameter of resin tags was 3 µm thick at the base and 1 µm thick at the end. (SEM×3,500)
jkacd-28-23-g006.jpg
Fig. 7
Enamel (E)-FL Bond (FL) interface showed close adaptation. (SEM×1,500)
jkacd-28-23-g007.jpg
Fig. 8
FL Bond showing 0.4 µm thick hybrid layer (h) with numerous resin tags(t). (SEM×1,500)
jkacd-28-23-g008.jpg
Fig. 9
Higher magnification of FL Bond showing long funnel shaped resin tags (2-12 µm long). Diameter of resin tags was 3 µm thick at the base and 1 µm thick at the end. (SEM×3,500)
jkacd-28-23-g009.jpg
Fig. 10
Enamel (E)-Prompt L-Pop (LP) interface showed close adaptation and thick adhesive layer (a) between resin (R) and LP. (SEM×1,500)
jkacd-28-23-g010.jpg
Fig. 11
Prompt L-Pop showing 0.4 µm thick hybrid layer with numerous resin tags (t). (SEM×1,500)
jkacd-28-23-g011.jpg
Fig. 12
Higher magnification of Prompt L-Pop showing short funnel shaped resin tags (4-8 µm long). Diameter of resin tags was 2.4 µm thick at the base and 0.6 µm thick at the end. (SEM×3,500)
jkacd-28-23-g012.jpg
Table 1
Group classification of three self-etching primer adhesives and one self-etching adhesive
jkacd-28-23-i001.jpg
Table 2
Chemical formulations of four adhesive systems

MDP: 10-methacryloyloxydecyl dihydrogen phosphate,

HEMA: 2-hydroxyethylmethacylate, 4-MET: 4-methacryethyl trimettalic acid,

MFM: multi-functional methacrylate, 4-AET:4-acryloxyethyltrimellitic acid,

4-AETA: 4-acryloxyethyltrimellitate anhydride

jkacd-28-23-i002.jpg
Table 3
Hybrid layer thickness (HLT), resin tags length (RTL), resin tags diameter (RTD) and resin tags shape (RTS) of the tested adhesives

*B: Base diameter of resin tags, E: End diameter of resin tags

jkacd-28-23-i003.jpg

Tables & Figures

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    • 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
      Journal of Korean Academy of Conservative Dentistry.2004; 29(5): 430.     CrossRef

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      Morphological patterns of self-etching primers and self-etching adhesive bonded to tooth structure
      J Korean Acad Conserv Dent. 2003;28(1):23-33.   Published online January 31, 2003
      DOI: https://doi.org/10.5395/JKACD.2003.28.1.023
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    Morphological patterns of self-etching primers and self-etching adhesive bonded to tooth structure
    Image Image Image Image Image Image Image Image Image Image Image Image
    Fig. 1 Enamel (E)-Clearfil SE Bond (SE) interface showed close adaptation. (SEM×1,500)
    Fig. 2 Clearfil SE Bond showing 2 µm thick hybrid layer (h) with numerous resin tags (t). (SEM×1,500)
    Fig. 3 Higher magnification of Clearfil SE Bond showing long rod shaped resin tags (5-15 µm long). Diameter of resin tags was 2.3 µm thick at the base and 1.3 µm thick at the end. (SEM×3,500)
    Fig. 4 Enamel (E)-UniFil Bond (UF) interface showed close adaptation and thick adhesive layer (a) between resin (R) and UF. (SEM×1,500)
    Fig. 5 UniFil Bond (UF) showing 1.5 µm thick hybrid layer (h) with few resin tags(t). (SEM×1,500)
    Fig. 6 Higher magnification of UniFil Bond (UF) showing long funnel shaped resin tags (3-12 µm long). Diameter of resin tags was 3 µm thick at the base and 1 µm thick at the end. (SEM×3,500)
    Fig. 7 Enamel (E)-FL Bond (FL) interface showed close adaptation. (SEM×1,500)
    Fig. 8 FL Bond showing 0.4 µm thick hybrid layer (h) with numerous resin tags(t). (SEM×1,500)
    Fig. 9 Higher magnification of FL Bond showing long funnel shaped resin tags (2-12 µm long). Diameter of resin tags was 3 µm thick at the base and 1 µm thick at the end. (SEM×3,500)
    Fig. 10 Enamel (E)-Prompt L-Pop (LP) interface showed close adaptation and thick adhesive layer (a) between resin (R) and LP. (SEM×1,500)
    Fig. 11 Prompt L-Pop showing 0.4 µm thick hybrid layer with numerous resin tags (t). (SEM×1,500)
    Fig. 12 Higher magnification of Prompt L-Pop showing short funnel shaped resin tags (4-8 µm long). Diameter of resin tags was 2.4 µm thick at the base and 0.6 µm thick at the end. (SEM×3,500)

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    Morphological patterns of self-etching primers and self-etching adhesive bonded to tooth structure

    Group classification of three self-etching primer adhesives and one self-etching adhesive

    Chemical formulations of four adhesive systems

    MDP: 10-methacryloyloxydecyl dihydrogen phosphate,

    HEMA: 2-hydroxyethylmethacylate, 4-MET: 4-methacryethyl trimettalic acid,

    MFM: multi-functional methacrylate, 4-AET:4-acryloxyethyltrimellitic acid,

    4-AETA: 4-acryloxyethyltrimellitate anhydride

    Hybrid layer thickness (HLT), resin tags length (RTL), resin tags diameter (RTD) and resin tags shape (RTS) of the tested adhesives

    *B: Base diameter of resin tags, E: End diameter of resin tags
    Table 1 Group classification of three self-etching primer adhesives and one self-etching adhesive

    Table 2 Chemical formulations of four adhesive systems

    MDP: 10-methacryloyloxydecyl dihydrogen phosphate,

    HEMA: 2-hydroxyethylmethacylate, 4-MET: 4-methacryethyl trimettalic acid,

    MFM: multi-functional methacrylate, 4-AET:4-acryloxyethyltrimellitic acid,

    4-AETA: 4-acryloxyethyltrimellitate anhydride

    Table 3 Hybrid layer thickness (HLT), resin tags length (RTL), resin tags diameter (RTD) and resin tags shape (RTS) of the tested adhesives

    *B: Base diameter of resin tags, E: End diameter of resin tags

    Table 1

    Table 2

    Table 3

    Restor Dent Endod : Restorative Dentistry & Endodontics
    © The Korean Academy of Conservative Dentistry.
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