Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/86783
Título: | Microscopic inspection of the adhesive interface of composite onlays after cementation on low loading: an in vitro study |
Autor(es): | Magalhães, Tiago Fidalgo-Pereira, Rita Torres, Orlanda Carvalho, Óscar Samuel Novais Silva, Filipe S. Henriques, Bruno Özcan, Mutlu Souza, Júlio C. M. |
Palavras-chave: | Onlay Resin composite Cementation Resin cement Dentin |
Data: | 7-Mar-2023 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Journal of Functional Biomaterials |
Citação: | Magalhães, T.; Fidalgo-Pereira, R.; Torres, O.; Carvalho, Ó.; Silva, F.S.; Henriques, B.; Özcan, M.; Souza, J.C.M. Microscopic Inspection of the Adhesive Interface of Composite Onlays after Cementation on Low Loading: An In Vitro Study. J. Funct. Biomater. 2023, 14, 148. https://doi.org/10.3390/jfb14030148 |
Resumo(s): | Purpose: This study aimed to assess the layer thickness and microstructure of traditional resin-matrix cements and flowable resin-matrix composites at dentin and enamel to composite onlay interfaces after cementation on low loading magnitude. Materials and Methods: Twenty teeth were prepared and conditioned with an adhesive system for restoration with resin-matrix composite onlays manufactured by CAD-CAM. On cementation, tooth-to-onlay assemblies were distributed into four groups, including two traditional resin-matrix cements (groups M and B), one flowable resin-matrix composite (group G), and one thermally induced flowable composite (group V). After the cementation procedure, assemblies were cross-sectioned for inspection by optical microscopy at different magnification up to ×1000. Results: The layer thickness of resin-matrix cementation showed the highest mean values at around 405 µm for a traditional resin-matrix cement (group B). The thermally induced flowable resin-matrix composites showed the lowest layer thickness values. The resin-matrix layer thickness revealed statistical differences between traditional resin cement (groups M and B) and flowable resin-matrix composites (groups V and G) (<i>p</i> < 0.05). However, the groups of flowable resin-matrix composites did not reveal statistical differences (<i>p</i> < 0.05). The thickness of the adhesive system layer at around 7 µm and 12 µm was lower at the interfaces with flowable resin-matrix composites when compared to the adhesive layer at resin-matrix cements, which ranged from 12 µm up to 40 µm. Conclusions: The flowable resin-matrix composites showed adequate flowing even though the loading on cementation was performed at low magnitude. Nevertheless, significant variation in thickness of the cementation layer was noticed for flowable resin-matrix composites and traditional resin-matrix cements that can occur in chair-side procedures due to the clinical sensitivity and differences in rheological properties of the materials. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/86783 |
DOI: | 10.3390/jfb14030148 |
e-ISSN: | 2079-4983 |
Versão da editora: | https://www.mdpi.com/2079-4983/14/3/148 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CMEMS - Artigos em revistas internacionais/Papers in international journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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jfb-14-00148-v2.pdf | 5,31 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons