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Effect of curing methods of resin cements on bond strength and adhesive interface of post


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Effect of curing methods of resin cements on bond strength and adhesive interface of post

Article information

Restor Dent Endod. 2009;34(2):103-112
Publication date (electronic) : 2009 March 31
doi : https://doi.org/10.5395/JKACD.2009.34.2.103
Mun-Hong Kim, Hae-Jung Kim, Young-Gon Cho
Department of Conservative Dentistry, Colledge of Dentistry, Chosun University, Korea.
Corresponding Author: Young-Gon Cho. Department of Conservative Dentistry, Chosun University, 421 Seosuk-dong, Dong-gu, Gwangju 501-825, Korea. Tel: 82-62-220-3840, Fax: 82-62-232-9064, ygcho@chosun.ac.kr
Received 2008 November 20; Revised 2009 January 02; Accepted 2009 January 12.

Abstract

The purpose of this study was to compare the effect of curing methods of adhesive resins and resin cements in the root canal. Crown portions of 32 single-rooted mandibular premolars were removed. Routine endodontic treatment was done, and 9 mm deep post spaces were prepared within root canals. No. 3 FRC Postec posts (Ivoclar-Vivadent AG, Liechtenstein) were cemented in the post spaces by self-(SC) or light-curing (LC) using two dual-cured adhesives (Adper Scotchbond multi-purpose plus and Exite DSC )and resin cements (RelyX ARC and Variolink II). They were assigned to 4 groups (n=8); R-SC, R-LC, V-SC, V-LC group.

After stored in distilled water for 24 hours, each root was transversally sectioned with 1.5 mm thick and made three slices. The specimens were subjected to push-out test in a universal testing machine (EZ Test, Shimadzu Co., Japan) with a crosshead speed of 1 mm/min. The data were analyzed with repeated ANOVA and one-way.

ANOVA. Also the interface of post-resin cement and resin cement-canal wall of each group was observed under FE-SEM.

When fiber posts were cemented into the root canal using total-etch adhesives, the bond strength and adaptation between post and root canal dentin was affected by curing method. Self-cure of adhesives and resin cements showed higher bond strength and closer adaptation than light-cure of them.

Keywords: Curing method; Resin cement; Bond strength; Post; Push-out test; FE-SEM

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Article information Continued

Copyright © 2009 The Korean Academy of Conservative Dentistry
(open-access) :

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.

Figure 1

Figure 1

Apparatus designed for push-out test

Figure 2

Figure 2

R-SC group(×300). P: post, C: resin cement, RD: root dentin

Figure 3

Figure 3

R-SC group(×1,000). P: post, C: resin cement

Figure 4

Figure 4

R-SC group(×1,000). C: resin cement, RD: root denti

Figure 5

Figure 5

R-LC group(×300). P: post, C: resin cement, RD: root dentin

Figure 6

Figure 6

R-LC group(×1,000). P: post, C: resin cement

Figure 7

Figure 7

R-LC group(×1,000). C: resin cement, RD: root dentin

Figure 8

Figure 8

V-SC group(×300). P: post, C: resin cement, RD: root dentin

Figure 9

Figure 9

V-SC group(×1,000). P: post, C: resin cement

Figure 10

Figure 10

V-SC group(×1,000). C: resin cement, RD: root dentin

Figure 11

Figure 11

V-LC group(×300). P: post, C: resin cement, RD: root dentin

Figure 12

Figure 12

V-LC group(×1,000). P: post, C: resin cement

Figure 13

Figure 13

V-LC group(×1,000). C: resin cement, RD: root dentin

Table 1

Resin cements and adhesive systems

Table 1

Table 2

Group classification and procedures for post cementation

Table 2

R: RelyX ARC, V: Variolink II, SC: Self-Cure, LC: Light-Cure, PR: Post Room

Table 3

Push-out strength (MPa) and statistical comparison

Table 3

R: RelyX ARC, V: Variolink II, SC: Self-Cure,LC: Light-Cure Same superscript is not statistically different (p > 0.05).