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. 2024 Jul 23:38:e076.
doi: 10.1590/1807-3107bor-2024.vol38.0076. eCollection 2024.

Restoration-repair potential of resin-modified glass ionomer cement

Carolina Lopes da Silva  1 , Cleber Paradzinski Cavalheiro  1 , Cassiane Gonçalves de Oliveira da Silva  2 , Daniela Prócida Raggio  3 , Luciano Casagrande  1 , Tathiane Larissa Lenzi  1
Affiliations

Restoration-repair potential of resin-modified glass ionomer cement

Carolina Lopes da Silva et al. Braz Oral Res. .

Abstract

This in vitro study aimed to evaluate the repair bond strength of resin-modified glass ionomer cement using either the same material or a universal adhesive in the etch-and-rinse and self-etch modes plus resin composite. Twenty-four resin-modified glass ionomer cement blocks were stored in distilled water for 14 d and thermocycled. Sandpaper ground specimens were randomly assigned to three experimental groups according to the repair protocol: resin-modified glass ionomer cement (Riva Light Cure, SDI) and universal adhesive (Scotchbond Universal Adhesive, 3M Oral Care) in etch-and-rinse or self-etch modes and nanohybrid resin composite (Z350 XT, 3M Oral Care). After 24 h of water storage, the blocks were sectioned, and bonded sticks were subjected to the microtensile bond strength (μTBS) test. One-way ANOVA and Tukey's test were used to analyze the data. The failure mode was descriptively analyzed. The highest μTBS values were obtained when the resin-modified glass ionomer cement was repaired using the same material (p < 0.01). In addition, the mode of application of the universal adhesive system did not influence the repair bond strength of the resin-modified glass ionomer cement. Adhesive/mixed failures prevailed in all groups. Repair of resin-modified glass ionomers with the same material appears to be the preferred option to improve bond strength.

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Conflict of interest statement

Declaration of Interests: The authors certify that they have no commercial or associative interest that represents a conflict of interest in connection with the manuscript.

Figures

Figure 1
Figure 1. SEM images of fractured specimens representative of the mixed/adhesive failure pattern from: 1A: repair with universal adhesive in the etch-and-rinse mode plus resin composite and 1B: aged resin-modified glass ionomer cement.
Figure 2
Figure 2. SEM images of fractured specimens representative of the mixed/adhesive failure pattern from: 2A: repair with universal adhesive in the self-etch mode plus resin composite and 2B: aged resin-modified glass ionomer cement.
Figure 3
Figure 3. SEM images of fractured specimens representative of the mixed/adhesive failure pattern from: 3A: repair with resin-modified glass ionomer cement and 3B: aged resin-modified glass ionomer cement.
See this image and copyright information in PMC

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