The effect of two cross-linking agents on dentin bond strength of resin-modified glass ionomer

Fereshteh Shafiei; Maryam Firouzmandi; Moona Zamanpour

doi:10.4103/ejd.ejd_258_17

European Journal of Dentistry, Table of Contents

CC BY-NC-ND 4.0 · Eur J Dent 2017; 11(04): 486-490
DOI: 10.4103/ejd.ejd_258_17

Original Article

Dental Investigation Society

The effect of two cross-linking agents on dentin bond strength of resin-modified glass ionomer

Authors

Fereshteh Shafiei

¹Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
Maryam Firouzmandi

¹Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
Moona Zamanpour

²Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran

Abstract

ABSTRACT

Objectives: The hybrid layer at the interface of resin-modified glass ionomer cements and dentin is prone to degradation by endogenous matrix metalloproteinases. We aimed to investigate the effect of two types of collagen crosslinkers, carbodiimide and proanthocyanidin (PA), on immediate and medium-term bond strength of a resin-modified glass ionomer to dentin. Materials and Methods: Seventy-two molars were flattened on the occlusal surface to expose dentin. The specimens were divided into control, 1-ethyl-3-(3-dimethylaminopropy) carbodiimide hydrochloride (EDC), and PA groups (n = 24). In the EDC and PA groups, carbodiimide and PA solutions were applied for 1 min, respectively. Resin-modified glass ionomer was bonded. Half of the specimens in each group were tested for shear bond strength after 24 h and the other half were tested after 6 months. Statistical Analysis: Data were analyzed with SPSS version 16 (SPSS Inc, Chicago, IL, USA), using two-way ANOVA, and subgroup analysis was performed using one-way ANOVA, Tukey's test, and t-test. Results: Two-way ANOVA showed that treatment and time affected the bond strength. Carbodiimide and PA did not affect the immediate bond strength (P = 0.51). After 6 months, the bond strength of the EDC group was significantly lower than that of the control and PA groups. Bond strength of the control and PA groups increased after 6 months (P ≤ 0.002). Conclusion: PA did not interfere with maturation of RMGIC unlike carbodiimide. Therefore, it can be suggested as an matrix metalloproteinase inhibitor before bonding of resin-modified glass ionomer to dentin.

Key words:

Bond strength - carbodiimide - matrix metalloproteinase - proanthocyanidin - resin-modified glass ionomer

Full Text

References

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