6 documents found, page 1 of 1
Interfacial Stress and Bond Strength of Bulk-Fill or Conventional Composite Res...
Duarte,Júlio César Lemos; Costa,Ana Rosa; Veríssimo,Crisnicaw; Duarte,Renata Webster; Calabrez Filho,Saturnino; Spohr,Ana Maria; Borges,Gilberto AntonioAbstract The aim was to evaluate the microtensile bond strength (mTBS) to dentin and interfacial stress in a class II cavity restored with bulk-fill or conventional composite resins and the margin interfaces. Vertical slot class II cavities in the mesial face, with the gingival end in dentin, were prepared in 72 third molars, being divided into groups (n=24): G1-Tetric N-Ceram; G2-Tetric N-Ceram Bulk-Fill; G3-S...
Effect of Dentin Preparation Mode on the Bond Strength Between Human Dentin and...
Cerqueira,Lara Almeida Cyrillo; Costa,Ana Rosa; Spohr,Ana Maria; Miyashita,Eduardo; Miranzi,Benito André Silveira; Calabrez Filho,SaturninoAbstract The aim was to evaluate the influence of different dentin preparation mode in the smear layer characteristics (SL), hybrid layer (HL), and microtensile bond strength (µTBS) to dentin with two resin cements. The occlusal dentin of 120 third molars was exposed. The teeth were divided into 4 groups (n=30) according to the dentin preparation mode: 1- fine grain diamond bur; 2- coarse grain diamond bur; 3- ...
Prototype to measure bracket debonding force in vivo
Tonus,Jéssika Lagni; Manfroi,Fernanda Borguetti; Borges,Gilberto Antonio; Grigolo,Eduardo Correa; Helegda,Sérgio; Spohr,Ana MariaABSTRACT Introduction: Material biodegradation that occurs in the mouth may interfere in the bonding strength between the bracket and the enamel, causing lower bond strength values in vivo, in comparison with in vitro studies. Objective: To develop a prototype to measure bracket debonding force in vivo and to evaluate, in vitro, the bond strength obtained with the prototype. Methods: A original plier (3M Unitek...
Dentin Bond Strength of a Fluoride-Releasing Adhesive System Submitted to pH-Cy...
Costa,Ana Rosa; Correr-Sobrinho,Lourenço; Ambrosano,Glaucia Maria Bovi; Sinhoreti,Mario Alexandre Coelho; Borges,Gilberto Antonio; Platt,Jeffrey A.To evaluate the microtensile bond strength (µTBS) of a fluoride-containing adhesive system submitted to a pH-cycling and storage time regimen for primary outcomes. As secondary outcomes the fluoride released amount was evaluated. Twelve dentin surfaces from sound third molar were divided into 2 groups according to adhesive systems: Clearfil SE Protect (PB) and Clearfil SE Bond (SE). Sticks obtained (1.0 mm2) fr...
Dual resin cement knoop hardness after different activation modes through denta...
Valentino,Thiago Assunção; Borges,Gilberto Antonio; Borges,Luis Henrique; Vishal,Jain; Martins,Luis Roberto Marcondes; Correr-Sobrinho,LourençoThis study investigated the influence of ceramic compositions on Knoop Hardness Number (KHN) immediately and 24 h after polymerization and the effect of activation modes on the KHN of a resin cement. Ten Panavia F 2.0 resin cement discs were activated either directly using curing light, or chemically without light, or through 1.2-thick ceramic discs. The following ceramics were evaluated: Duceram, Cergogold, IP...
Effect of refrigeration on bond strength of self-etching adhesive systems
Borges,Gilberto Antonio; Spohr,Ana Maria; Oliveira,Wildomar José de; Correr-Sobrinho,Lourenço; Correr,Américo Bortolazzo; Borges,Luis HenriqueThe purpose of this study was to investigate the tensile bond strength to dentin of three self-etching adhesive systems at refrigerated and room temperatures. Seventy-eight bovine incisors were embedded in self-cured acrylic resin, abraded on a water-cooled lathe and polished with 400- and 600-grit sandpapers to obtain standard dentin surfaces. The specimens were randomly assigned to 6 groups (n=13). Clearfil S...