INFLUENCE OF THE CERAMIC TRANSLUCENCY ON THE CONVERSION DEGREE OF DIFFERENT ADHESIVE SYSTEMS – IN VITRO STUDY

Matheus de Paula Costa, Mirela Martins Coelho Beluomini, Marina Amaral, Priscila Christiane Suzy Liporoni, Daniele Mara da Silva Avila, Rayssa Ferreira Zanatta

Resumo


Aim: This study evaluated the degree of conversion (%DC) of different adhesive systems cured through ceramics with different translucencies. Methods: The %DC of three adhesive were measured: SBU - Scothbond Universal (3M ESPE), AMB - Ambar (FGM), APS - Ambar APS (FGM), considering two ceramic translucencies: high (HT) and low (LT). A standard ceramic sample (10 mm x 10 mm x 1 mm) was obtained from each translucency tested. A standard translucent resin cement (Variolink Esthetic LC, Ivoclar Vivadent) was placed over one side of each ceramic sample to simulate the cement interface. The measurement of the adhesive %DC was made using FTIR spectroscopy, considering the ratio of aliphatic/aromatic double carbon bonds before and after curing through the ceramic sample. Five readings were made for each adhesive. Data were subjected to two-way analysis of variance (Anova Two-Way) and Tukey test (p <0.05). Results: There was a statistical difference for the adhesive (p <0.001) and ceramic x adhesive interaction (p = 0.035), while for the ceramic there was no significant difference (p = 0.903). For the two ceramics, the APS adhesive had the highest% DC value, followed by AMB and SBU. Conclusion: For ceramics with 1 mm thickness the translucency had a low influence in the %DC of the adhesive. The adhesive containing the APS system showed better conversion of monomers compared to the others tested.

Palavras-chave


Adhesives; Ceramics; Photoiniciators; Photopolimerization; Translucency.

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Referências


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