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HOME > Restor Dent Endod > Volume 34(6); 2009 > Article
Original Article Real-time measurement of dentinal tubular fluid flow during and after amalgam and composite restorations
Sun-Young Kim1, Byeong-Hoon Cho1, Seung-Ho Baek1, Bum-Sun Lim2, In-Bog Lee1
2009;34(6):-476.
DOI: https://doi.org/10.5395/JKACD.2009.34.6.467
Published online: November 30, 2009

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Corresponding Author: In-Bog Lee. Department of Conservative Dentistry, School of Dentistry, Seoul National University, 275-1 Yeongeon-Dong, Jongno-Gu, Seoul 110-768, Korea. Tel: 82-2-2072-3953, Fax: 82-2-2072-3859, inboglee@snu.ac.kr
• Received: June 29, 2009   • Revised: August 31, 2009   • Accepted: September 1, 2009

Copyright © 2009 The Korean Academy of Conservative Dentistry

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  • The aim of this study was to measure the dentinal tubular fluid flow (DFF) during and after amalgam and composite restorations. A newly designed fluid flow measurement instrument was made. A third molar cut at 3 mm apical from the CEJ was connected to the flow measuring device under a hydrostatic pressure of 15 cmH2O. Class I cavity was prepared and restored with either amalgam (Copalite varnish and Bestaloy) or composite (Z-250 with ScotchBond MultiPurpose: MP, Single Bond 2: SB, Clearfil SE Bond: CE and Easy Bond: EB as bonding systems). The DFF was measured from the intact tooth state through restoration procedures to 30 minutes after restoration, and re-measured at 3 and 7days after restoration.
    Inward fluid flow (IF) during cavity preparation was followed by outward flow (OF) after preparation. In amalgam restoration, the OF changed to IF during amalgam filling and slight OF followed after finishing.
    In composite restoration, application CE and EB showed a continuous OF and air-dry increased rapidly the OF until light-curing, whereas in MP and SB, rinse and dry caused IF and OF, respectively. Application of hydrophobic bonding resin in MP and CE caused a decrease in flow rate or even slight IF. Light-curing of adhesive and composite showed an abrupt IF. There was no statistically significant difference in the reduction of DFF among the materials at 30 min, 3 and 7 days after restoration (P > 0.05).
  • Keywords: Dentinal tubular fluid flow; Amalgam; Composite; Bonding system
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Figure 1
Schematic diagram of the dentinal tubular fluid flow measurement system.
jkacd-34-467-g001.jpg
Figure 2
Consecutive DFF during amalgam restoration. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; V: varnish application; ga: gentle air stream; AF: amalgam filling.
jkacd-34-467-g002.jpg
Figure 3
(a) Consecutive DFF during composite restoration with MP. (b) Magnified view of consecutive DFF during bonding procedure of MP. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; LC: light curing; C1: first layer filling of composite; C2: second layer filling of composite; E: acid-etching; r: rinse; d: blot-dry; P: primer application; ga: gentle air; A: adhesive application.
jkacd-34-467-g003.jpg
Figure 4
(a) Consecutive DFF during composite restoration with SB. (b) Magnified view of consecutive DFF during bonding procedure of SB. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; LC: light curing; C1: first layer filling of composite; C2: second layer filling of composite; E: acid-etching; r: rinse; d: blot-dry; sb: Single Bond application; ga: gentle air.
jkacd-34-467-g004.jpg
Figure 5
(a) Consecutive DFF during composite restoration with CE. (b) Magnified view of consecutive DFF during bonding procedure of CE. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; LC: light curing; C1: first layer filling of composite; C2: second layer filling of composite; SE: self-etching primer application; a: air-dry; A: adhesive application.
jkacd-34-467-g005.jpg
Figure 6
(a) Consecutive DFF during composite restoration with EB. (b) Magnified view of consecutive DFF during bonding procedure of EB. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; LC: light curing; C1: first layer filling of composite; C2: second layer filling of composite; eb: Easy Bond application; a: air-dry.
jkacd-34-467-g006.jpg
Table 1
The restorative materials and procedures for each group.

Abbreviation: E, acid etching for 15 sec; P, Primer application; A, Adhesive application; PA, application of mixed agent with primer and adhesive; SE, self-etching primer application; SEA, application of self-etching adhesive; LC, light-curing; RF, resin composite filling.

jkacd-34-467-i001.jpg
Table 2
Flow rate reduction (%) of each group at 30 minutes, 3 days, and 7days after restoration with respect to baseline (n=10).

There was no statistically significant difference among groups for each measurement time. There was no statistically significant difference according to the measurement time for each material. s.d=standard deviation.

jkacd-34-467-i002.jpg

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    • Real-time measurement of dentinal fluid flow during desensitizing agent application
      Sun-Young Kim, Eun-Joo Kim, In-Bog Lee
      Journal of Korean Academy of Conservative Dentistry.2010; 35(5): 313.     CrossRef

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      Real-time measurement of dentinal tubular fluid flow during and after amalgam and composite restorations
      J Korean Acad Conserv Dent. 2009;34(6):467-476.   Published online November 30, 2009
      DOI: https://doi.org/10.5395/JKACD.2009.34.6.467
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    Real-time measurement of dentinal tubular fluid flow during and after amalgam and composite restorations
    Image Image Image Image Image Image
    Figure 1 Schematic diagram of the dentinal tubular fluid flow measurement system.
    Figure 2 Consecutive DFF during amalgam restoration. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; V: varnish application; ga: gentle air stream; AF: amalgam filling.
    Figure 3 (a) Consecutive DFF during composite restoration with MP. (b) Magnified view of consecutive DFF during bonding procedure of MP. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; LC: light curing; C1: first layer filling of composite; C2: second layer filling of composite; E: acid-etching; r: rinse; d: blot-dry; P: primer application; ga: gentle air; A: adhesive application.
    Figure 4 (a) Consecutive DFF during composite restoration with SB. (b) Magnified view of consecutive DFF during bonding procedure of SB. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; LC: light curing; C1: first layer filling of composite; C2: second layer filling of composite; E: acid-etching; r: rinse; d: blot-dry; sb: Single Bond application; ga: gentle air.
    Figure 5 (a) Consecutive DFF during composite restoration with CE. (b) Magnified view of consecutive DFF during bonding procedure of CE. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; LC: light curing; C1: first layer filling of composite; C2: second layer filling of composite; SE: self-etching primer application; a: air-dry; A: adhesive application.
    Figure 6 (a) Consecutive DFF during composite restoration with EB. (b) Magnified view of consecutive DFF during bonding procedure of EB. Upward movement (+) vs time on graph indicates outward DFF, whereas downward movement (-) indicates inward DFF. CP: cavity preparation; LC: light curing; C1: first layer filling of composite; C2: second layer filling of composite; eb: Easy Bond application; a: air-dry.

    Figure 1

    Figure 2

    Figure 3

    Figure 4

    Figure 5

    Figure 6

    Real-time measurement of dentinal tubular fluid flow during and after amalgam and composite restorations

    The restorative materials and procedures for each group.

    Abbreviation: E, acid etching for 15 sec; P, Primer application; A, Adhesive application; PA, application of mixed agent with primer and adhesive; SE, self-etching primer application; SEA, application of self-etching adhesive; LC, light-curing; RF, resin composite filling.

    Flow rate reduction (%) of each group at 30 minutes, 3 days, and 7days after restoration with respect to baseline (n=10).

    There was no statistically significant difference among groups for each measurement time. There was no statistically significant difference according to the measurement time for each material. s.d=standard deviation.
    Table 1 The restorative materials and procedures for each group.

    Abbreviation: E, acid etching for 15 sec; P, Primer application; A, Adhesive application; PA, application of mixed agent with primer and adhesive; SE, self-etching primer application; SEA, application of self-etching adhesive; LC, light-curing; RF, resin composite filling.

    Table 2 Flow rate reduction (%) of each group at 30 minutes, 3 days, and 7days after restoration with respect to baseline (n=10).

    There was no statistically significant difference among groups for each measurement time. There was no statistically significant difference according to the measurement time for each material. s.d=standard deviation.

    Table 1

    Table 2

    Restor Dent Endod : Restorative Dentistry & Endodontics
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