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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...
Effect of Self-Etching Primer Associated to Hydrofluoric acid or Silane on Bond...
Siqueira,Fabiana Suelen Figuerêdo de; Campos,Veridiana Silva; Wendlinger,Michel; Muso,Rosa Ana Chiluisa; Gomes,João Carlos; Reis,AlessandraAbstract To evaluate the effect of combining 5% hydrofluoric acid (HF) and silane (SI) with the self-etching ceramic primer on the immediate and after 1-year of water storage on bonding efficacy, conditioning pattern (CP) and chemical interaction (CI) to the lithium disilicate. A total of 16 CAD/CAM blocks of lithium disilicate (LD) were cut into four square sections (n=64). For bonding efficacy evaluation, the...
Effect of the Bis-Dimethylamino Benzydrol Coinitiator on the Mechanical and Bio...
Bittencourt,Bruna Fortes; Dominguez,John Alexis; Pinheiro,Luís Antonio; Farago,Paulo Vitor; Santos,Elizabete Brasil dos; Campos,Leticia AntoneloAbstract To examine the effect of the alternative coinitiator 4,4’bis dimethylamino benzydrol (BZN) in degree of conversion (DC), mechanical and biological properties of experimental composites. The coinitiator BZN was used in three concentrations (0.2, 0.5 and 1.2%), and the coinitiator DMAEMA was used as control at the same concentrations as above. The molar concentration of camphorquinone (CQ) and coinitiato...
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...
Avaliação da liberação de flúor e da capacidade de recarga em diferentes ciment...
Pupo,Yasmine Mendes; Bakaus,Thaís; Farago,Paulo Vitor; Ferro,Lea Rosa Chioca; Gomes,Osnara Maria Mongruel; Gomes,João CarlosObjetivo Avaliar a liberação e a capacidade de recarga de flúor de diferentes cimentos de ionômero de vidro, durante a simulação de desafio cariogênico. Material e método Foram confeccionados 12 corpos de prova para cada grupo experimental, com cimentos de ionômero de vidro convencionais – Maxxion R (FGM), Ketac Molar EasyMix (3M ESPE); cimento de ionômero de vidro modificado por resina – Vitrebond (3M ESPE), e...
Antimicrobial Effect and Transdentinal Diffusion of New Intracanal Formulations...
Silva,Ana Rita; Santos,Elizabete Brasil; Pinto,Shelon Cristina Souza; Gomes,João Carlos; Vaz,Irene Pina; Carvalho,Manuel FontesThe aim of this study was to investigate in vitro the antimicrobial effect and diffusion against E. faecalis of new intracanal medications on the external root surface. The medications tested were a placebo gel (PC); the new formulations with either 3% nitrofurantoin (NIT) or 3% doxycycline hydrochloride (DX) and 2% chlorhexidine (CHX) gel as positive control. The new formulations were tested using the traditio...
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 ...
Marginal microleakage of class V resin-based composite restorations bonded with...
Sánchez-Ayala,Alfonso; Farias-Neto,Arcelino; Vilanova,Larissa Soares Reis; Gomes,João Carlos; Gomes,Osnara Maria MongruelThis study compared the microleakage of class V restorations bonded with various one-step self-etching adhesives. Seventy class V resin-based composite restorations were prepared on the buccal and lingual surfaces of 35 premolars, by using: Clearfil S 3 Bond, G-Bond, iBond, One Coat 7.0, OptiBond All-In-One, or Xeno IV. The Adper Single Bond etch-and-rinse two-step adhesive was employed as a control. Specimens ...
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...
Cultura e transformação do trabalho no porto de Santos
Gomes,João Carlos; Junqueira,Luciano Antonio PratesEste artigo analisa, pela perspectiva da cultura, os significados que os estivadores atribuem às mudanças que se processam no porto de Santos, colocando em evidência o impacto produzido pela transformação portuária sobre os valores constituídos ao longo de sua experiência histórica. Os primeiros resultados mostram que a atual organização do trabalho, orientada pelas novas tecnologias e pelos novos atores no por...