21 documents found, page 1 of 3
Antibacterial properties of restorative materials: nanohybrid composite resin, ...
Ribeiro, Ana Francisca; Mazière, Marie; Fortuna Rodrigues, Célia; Lopes-Rocha, Lígia; Rajão, António; Torres, Orlanda; Ribeiro, Ana FranciscaIntroduction: The careful selection of restorative materials, such as resin-matrix composite, resin-based fissure sealants and glass ionomer, plays a crucial role in the successful treatment of dental caries, especially the antibacterial properties of these materials. Objectives: To evaluate and compare the antibacterial properties of resin-matrix composite, resin-based fissure sealants and glass ionomer in rel...
Light transmittance through resin-matrix composite onlays adhered to resin-matr...
Fidalgo-Pereira, Rita; Catarino, Susana Oliveira; Carvalho, Óscar Samuel Novais; Veiga, Nélio; Torres, Orlanda; Braem, Annabel; Souza, Júlio C. M.Objective: The aim of this study was to evaluate the influence of the thickness of resin-matrix composite blocks manufactured by CAD-CAM on the light transmittance towards different resin-matrix cements or flowable composites. Methods: Sixty specimens of resin-matrix composite CAD-CAM blocks reinforced with 89 wt% inorganic fillers were cross-sectioned with 2 or 3 mm thicknesses. The specimens were conditioned ...
Light transmittance through resin-matrix composite onlays adhered to resin-matr...
Fidalgo-Pereira, Rita; Catarino, Susana O.; Carvalho, Óscar; Veiga, Nélio; Torres, Orlanda; Braem, Annabel; Souza, Júlio C. M.OBJECTIVE: The aim of this study was to evaluate the influence of the thickness of resin-matrix composite blocks manufactured by CAD-CAM on the light transmittance towards different resin-matrix cements or flowable composites. METHODS: Sixty specimens of resin-matrix composite CAD-CAM blocks reinforced with 89 wt% inorganic fillers were cross-sectioned with 2 or 3 mm thicknesses. The specimens were conditioned ...
The impact of inorganic fillers, organic content, and polymerization mode on th...
Santos, Marcionilia; Fidalgo-Pereira, Rita; Torres, Orlanda; Carvalho, Oscar; Henriques, Bruno; Özcan, Mutlu; Souza, Júlio C. M.PURPOSE: The main aim of the present study was to carry out a scoping review on the differences in degree of conversion of monomers regarding several types resin cements, indirect restorative materials, and light-curing procedures used in dentistry. METHOD: A bibliographic review was performed on PubMed using the following search items: "degree of conversion" OR "filler" AND "resin cement" OR "inorganic cement"...
Microscopic inspection of the adhesive interface of composite onlays after ceme...
Magalhães, Tiago; Fidalgo-Pereira, Rita; Torres, Orlanda; Carvalho, Óscar Samuel Novais; Silva, Filipe S.; Henriques, Bruno; Özcan, MutluPurpose: 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 ce...
Transmitância ótica de resinas compostas na cimentação de restaurações indireta...
Fidalgo-Pereira, Rita; Fernandes, Valter; Carvalho, Óscar Samuel Novais; Torres, Orlanda; Catarino, Susana Oliveira; Souza, Júlio C. M.[Excerto] Introdução A longevidade das restaurações indiretas adesivas depende, entre outros fatores, do tipo de material restaurador, da espessura do material restaurador, propriedades do cimento à base de resina e do procedimento de fotopolimerização1.[...]
Accuracy of the electronic method versus the radiographic method in determining...
Marques, Celia Eduarda; Delphim, Marcella; Fidalgo-Pereira, Rita; Melo-Ferraz, António; Miller, Paulo; Torres, OrlandaIntroduction: The radiographic method is widely used to calculate the working length (CT). However, it presents limitations that, to overcome them, apical electronic locators (LEAs) were developed to allow greater accuracy and reliability in determining the CT. Objective: The present study aims to perform an integrative systematic review and gather the available scientific evidence on the method that allows gre...
A Scoping review on the polymerization of resin-matrix cements used in restorat...
Fidalgo-Pereira, Rita; Torres, Orlanda; Carvalho, Óscar Samuel Novais; Silva, Filipe Samuel; Catarino, Susana Oliveira; Ozcan, Mutlu; Souza, Júlio C.M.In dentistry, clinicians mainly use dual-cured or light-cured resin-matrix cements to achieve a proper polymerization of the organic matrix leading to enhanced physical properties of the cement. However, several parameters can affect the polymerization of resin-matrix cements. The main aim of the present study was to perform a scoping review on the degree of conversion (DC) of the organic matrix, the polymeriza...
Effect of inorganic fillers on the light transmission through traditional or fl...
Fidalgo-Pereira, Rita; Carvalho, Óscar Samuel Novais; Catarino, Susana Oliveira; Henriques, Bruno; Torres, Orlanda; Braem, Annabel; Souza, Júlio C. M.Objectives The aim of this in vitro study was to evaluate the light transmission through five different resin-matrix composites regarding the inorganic filler content. Methods Resin-matrix composite disc-shaped specimens were prepared on glass molds. Three traditional resin-matrix composites contained inorganic fillers at 74, 80, and 89 wt. % while two flowable composites revealed 60 and 62.5 wt. % inorganic fi...
Microscopic inspection of the adhesive interface of composite onlays after ceme...
Magalhães, Tiago; Fidalgo-Pereira, Rita; Torres, Orlanda; Carvalho, Óscar; Silva, Filipe S.; Henriques, Bruno; Özcan, Mutlu; Souza, Júlio C. M.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 ce...