J Korean Acad Conserv Dent.  2009 Mar;34(2):103-112. 10.5395/JKACD.2009.34.2.103.

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

• Kim MH
• Kim HJ
• Cho YG

• KMID: 2294351
• DOI: http://doi.org/10.5395/JKACD.2009.34.2.103

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.

Keyword

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

MeSH Terms

Adhesives
Bicuspid
Collodion
Crowns
Dental Pulp Cavity
Dentin
Resin Cements
Water
Adhesives
Collodion
Resin Cements
Water

Figure

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  Figure 1 Apparatus designed for push-out test

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  Figure 2 R-SC group(×300). P: post, C: resin cement, RD: root dentin

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  Figure 3 R-SC group(×1,000). P: post, C: resin cement

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  Figure 4 R-SC group(×1,000). C: resin cement, RD: root denti

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  Figure 5 R-LC group(×300). P: post, C: resin cement, RD: root dentin

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  Figure 6 R-LC group(×1,000). P: post, C: resin cement

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  Figure 7 R-LC group(×1,000). C: resin cement, RD: root dentin

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  Figure 8 V-SC group(×300). P: post, C: resin cement, RD: root dentin

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  Figure 9 V-SC group(×1,000). P: post, C: resin cement

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  Figure 10 V-SC group(×1,000). C: resin cement, RD: root dentin

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  Figure 11 V-LC group(×300). P: post, C: resin cement, RD: root dentin

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  Figure 12 V-LC group(×1,000). P: post, C: resin cement

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  Figure 13 V-LC group(×1,000). C: resin cement, RD: root dentin

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