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HOME > Restor Dent Endod > Volume 29(5); 2004 > Article
Original Article New quantitative measuring technique for microleakage of the restored tooth through 3D reconstruction
Sang-Yoon Ha, Dong-Hoon Shin
2004;29(5):-422.
DOI: https://doi.org/10.5395/JKACD.2004.29.5.413
Published online: September 30, 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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  • Established microleakage tests have their own disadvantages. In this study, 3D reconstruction method was tried to overcome these disadvantages.
    Four types of microleakage tests were used and relationships among them were estimated: penetrated dye volume; marginal adaptability; degree of dye penetration and relative penetrated length to cavity wall.
    Twenty-four Class V cavities were bulk filled with composite (Esthet X) following surface treatments: N group (no treatment); E group (etching only); T group (etching + Prime & Bond NT). 50% silver nitrate was used as a dye solution after thermocycling (5℃ & 55℃, 1,000 times). Teeth were serially ground with a thickness of 0.2 mm. Volume of dye penetration was estimated from a three-dimensionally reconstructed image with a software (3D-DOCTOR). Percentage of margin without gap was estimated from SEM and degree of dye penetration and the relative length of dye penetration to overall cavity wall were also estimated.
    ANOVA and Scheffe test for dye volume, Kruskal-Wallis and Mann-Whitney test for marginal quality, Spearman's rho test for checking of relationships among methods were used.
    The results were as follows:
    1. Dye penetration could be seen from several directions, furthermore, its volumetric estimation was possible.
    2. Reverse relationship was found between dye volume and marginal quality (r = -0.881 / p = 0.004).
    3. Very low relationship was seen between dye volume and two-dimensional tests (degree of dye penetration and relative length). However, 2D evaluation methods showed high relationship (p = 0.002-0.054) each other.
    4. Three times vertical section could be recommended as a 2D test.
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Figure 1
Marginal adaptation from SEM evaluation: Percentage of gap-free margin (A; red) to cavity perimeter (B; blue) (SEM image; × 35)
jkacd-29-413-g001.jpg
Figure 2
Montage view showing serial cross-sectioned images
jkacd-29-413-g002.jpg
Figure 3
Three-dimensionally reconstructed restored tooth
jkacd-29-413-g003.jpg
Figure 4
Evaluation criteria about percentage of dye penetration: Percentage of length of dye penetration (B; red) to overall cavity wall length (A; blue)
jkacd-29-413-g004.jpg
Figure 5
Evaluation criteria about degree of dye penetration: 0 - No dye penetration (A); 1 - Dye penetration less than half the length of the gingival or occlusal wall (B); 2 - Dye penetration up to the full length of the gingival or occlusal wall (C); 3 - Dye penetration along the axial wall (D)
jkacd-29-413-g005.jpg
Figure 6
Three-dimensionally reconstructed tooth (group N): A; buccal view, B; mesial view, C; lingual view, D; distal view
jkacd-29-413-g006.jpg
Figure 7
Three-dimensionally reconstructed tooth (group E): A; buccal view, B; mesial view, C; lingual view, D; distal view
jkacd-29-413-g007.jpg
Figure 8
Three-dimensionally reconstructed tooth (group T): A; buccal view, B; mesial view, C; lingual view, D; distal view
jkacd-29-413-g008.jpg
Table 1
Surface treatments
jkacd-29-413-i001.jpg
Table 2
Percentage of perfect margin

*: p < 0.05 **: p < 0.01

jkacd-29-413-i002.jpg
Table 3
Volumetric microleakage (cubic voxels)

*: p < 0.05

jkacd-29-413-i003.jpg
Table 4
Mean degree of dye penetration according to number of vertical section
jkacd-29-413-i004.jpg
Table 5
Mean relative length of dye penetration to an overall cavity wall according to number of vertical section (%)
jkacd-29-413-i005.jpg
Table 6
Correlation between evaluation methods

**: p < 0.01

jkacd-29-413-i006.jpg
Table 7
Degree of dye penetration according to number of vertical section
jkacd-29-413-i007.jpg
Table 8
Relative length of dye penetration according to number of vertical section (%)
jkacd-29-413-i008.jpg

Tables & Figures

REFERENCES

    Citations

    Citations to this article as recorded by  
    • Estimation of relation between techniques of dye penetration for microleakage and SEM evaluation for marginal adaptation of the restoration
      Soon-Joo Hwang, Dong-Hoon Shin
      Journal of Korean Academy of Conservative Dentistry.2006; 31(5): 337.     CrossRef
    • Microleakage of the class V cavity according to restoration site and cavity size using SEM and three-dimensional reconstruction techniques
      In-Seo Yang, Dong-Hoon Shin
      Journal of Korean Academy of Conservative Dentistry.2005; 30(2): 112.     CrossRef

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      New quantitative measuring technique for microleakage of the restored tooth through 3D reconstruction
      J Korean Acad Conserv Dent. 2004;29(5):413-422.   Published online September 30, 2004
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    New quantitative measuring technique for microleakage of the restored tooth through 3D reconstruction
    Image Image Image Image Image Image Image Image
    Figure 1 Marginal adaptation from SEM evaluation: Percentage of gap-free margin (A; red) to cavity perimeter (B; blue) (SEM image; × 35)
    Figure 2 Montage view showing serial cross-sectioned images
    Figure 3 Three-dimensionally reconstructed restored tooth
    Figure 4 Evaluation criteria about percentage of dye penetration: Percentage of length of dye penetration (B; red) to overall cavity wall length (A; blue)
    Figure 5 Evaluation criteria about degree of dye penetration: 0 - No dye penetration (A); 1 - Dye penetration less than half the length of the gingival or occlusal wall (B); 2 - Dye penetration up to the full length of the gingival or occlusal wall (C); 3 - Dye penetration along the axial wall (D)
    Figure 6 Three-dimensionally reconstructed tooth (group N): A; buccal view, B; mesial view, C; lingual view, D; distal view
    Figure 7 Three-dimensionally reconstructed tooth (group E): A; buccal view, B; mesial view, C; lingual view, D; distal view
    Figure 8 Three-dimensionally reconstructed tooth (group T): A; buccal view, B; mesial view, C; lingual view, D; distal view
    New quantitative measuring technique for microleakage of the restored tooth through 3D reconstruction

    Surface treatments

    Percentage of perfect margin

    *: p < 0.05 **: p < 0.01

    Volumetric microleakage (cubic voxels)

    *: p < 0.05

    Mean degree of dye penetration according to number of vertical section

    Mean relative length of dye penetration to an overall cavity wall according to number of vertical section (%)

    Correlation between evaluation methods

    **: p < 0.01

    Degree of dye penetration according to number of vertical section

    Relative length of dye penetration according to number of vertical section (%)

    Table 1 Surface treatments

    Table 2 Percentage of perfect margin

    *: p < 0.05 **: p < 0.01

    Table 3 Volumetric microleakage (cubic voxels)

    *: p < 0.05

    Table 4 Mean degree of dye penetration according to number of vertical section

    Table 5 Mean relative length of dye penetration to an overall cavity wall according to number of vertical section (%)

    Table 6 Correlation between evaluation methods

    **: p < 0.01

    Table 7 Degree of dye penetration according to number of vertical section

    Table 8 Relative length of dye penetration according to number of vertical section (%)


    Restor Dent Endod : Restorative Dentistry & Endodontics
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