7 documents found, page 1 of 1
Effect of Conditioning Protocols and Ultrasonic Application of an Infiltrant Re...
López López,Edgar Alexander; Dominguez,John Alexis; Gomes,Giovana Mongruel; Mora,Camilo Andrés Pulido; Bittencourt,Bruna Fortes; Gomes,João CarlosAbstract The aim of this study was to evaluate different conditioning protocols and sonic/ultrasonic application of an infiltrant resin (IR) in artificial white spot lesions (AWSL). the V/L surfaces of 48 molars were induced to an AWSL and divided in 6 groups, according to the conditioning protocols and application technique: 15% hydrochloric acid (HA) + manual application of the IR; HA + 37% phosphoric acid (P...
Bond strength values of fiberglass post to flared root canals reinforced with d...
Bakaus,Thaís Emanuelle; Gruber,Yançanã Luizy; Reis,Alessandra; Gomes,Osnara Maria Mongruel; Gomes,Giovana MongruelAbstract The aim of this study was to compare in vitro the bond strength (BS) between fiberglass posts and flared root canals reinforced with different materials. The roots of 48 premolars were endodontically treated. After one week, the root canals were prepared to simulate an oversized root canal, except for the positive control group (PCG), which was cemented with a prefabricated fiber post (PFP) compatible ...
Effect of bleaching agents containing fluoride or calcium on enamel microhardne...
Rauen,Charles Alex; Chidoski Filho,Júlio Cezar; Bittencourt,Bruna Fortes; Gomes,Giovana Mongruel; Gomes,João Carlos; Gomes,Osnara Maria MongruelAbstract Aim: To evaluate the effect of different in-office bleaching agents on the permeability, roughness and surface microhardness of human enamel. Methods: For evaluation of roughness and microhardness, 40 hemi-faces of 20 premolars were subjected to initial roughness (Ra parameter) and microhardness (VHN) measurements. Thirty-two premolar's crowns were used for permeability test. Then, all specimens were r...
Effect of finishing and polishing on surface roughness of composite resins afte...
Bittencourt,Bruna Fortes; Gomes,Giovana Mongruel; Trentini,Felipe Auer; Azevedo,Mônica Regina de; Gomes,João Carlos; Gomes,Osnara Maria MongruelAIM: To evaluate the influence of finishing and polishing techniques on the surface roughness of two composite resins (CRs) subjected to bleaching procedure.METHODS: Forty-eight CR specimens were divided into six groups (n=8). For G1 to G3, a microhybrid CR (Opallis; FGM) was used, and G4 to G6, received a nanohybrid CR (Brilliant NewLine; Coltène/Whaledent). All specimens were subjected to bleaching procedure ...
Evaluation of human enamel permeability exposed to bleaching agents
Horning,Diego; Gomes,Giovana Mongruel; Bittencourt,Bruna Fortes; Ruiz,Lucas Manuel; Reis,Alessandra; Gomes,Osnara Maria MongruelAIM: To evaluate the human enamel permeability after different external bleaching techniques. METHODS: The coronal portions of 20 maxillary human incisors were covered with an acid resistant varnish, except the labial surface, to prevent dye penetration of silver nitrate. The specimens were divided randomly into four groups (n=5) according to the bleaching treatments: Group 1 (G1) - without bleaching agent (con...
Regional bond strengths to root canal dentin of fiber posts luted with three ce...
Gomes,Giovana Mongruel; Gomes,Osnara Maria Mongruel; Reis,Alessandra; Gomes,João Carlos; Loguercio,Alessandro Dourado; Calixto,Abraham LincolnThis study evaluated the influence of the cementation system on the regional push-out bond strength and failure pattern of fiber posts to radicular dentin. The roots of 48 extracted human incisors were prepared and divided into 3 groups (n=16), according to the cementation system: AdperScotchbond Multi-Purpose + resin cement RelyX ARC (SBMP+ARC); Adper SingleBond 2 + RelyX ARC (SB+ARC) and; RelyX U100 self-adhe...
Hardness of a bleaching-shade resin composite polymerized with different light-...
Gomes,Giovana Mongruel; Calixto,Abraham Lincoln; Santos,Fabio André dos; Gomes,Osnara Maria Mongruel; D'Alpino,Paulo Henrique PerlattiThe microhardness of a bleaching-shade resin composite polymerized with different light-curing units was evaluated. Composite samples (3M ESPE Filtek Supreme) were applied to brass rings (2 mm in thickness, 5 mm in diameter). Three commercial LED lights were used to polymerize the specimens and the results were compared to those of a conventional halogen light. The light sources used in the present study were: ...