8 documents found, page 1 of 1
Does cad software affect the marginal and internal fit of milled full ceramic c...
Akat,Bora; Şentürk,Ayben; Ocak,Mert; Kiliçarslan,Mehmet Ali; Özcan,MutluAbstract: Although the effects of different intraoral scanners, model scanners, and CAM units on the marginal and internal fitting of restorations have been investigated, the effects of CAD software in particular has not been evaluated. The marginal and internal fit of indirect restorations may vary according to the CAD software used, even when using the same intraoral scanner and milling machine. The purpose o...
CAD-FEA modeling and fracture resistance of bilayer zirconia crowns manufacture...
Lima,Julia Magalhães Costa; Costa,Anna Karina Figueiredo; Anami,Lilian Costa; Souza,Karina Barbosa; Silva,Nathalia Ramos daAbstract In the RLT (Rapid Layer Technology), veneering ceramic and framework are fabricated by computer-aided design/computer-aided manufacturing (CAD/CAM) and then cemented to obtain the restoration. This study aimed to evaluate the effect of the thickness of veneering ceramic manufactured by the RLT technique on the fracture resistance (FR) of bilayer crowns with zirconia frameworks. Twenty zirconia framewor...
Influence of Acid Etching and Universal Adhesives on the Bond Strength to Dentin
Campos,Maria de Fátima T. P.; Moura,Dayanne Monielle Duarte; Borges,Boniek Castillo Dutra; Assuncao,Isauremi Vieira deAbstract The purpose of this study was to evaluate the influence of the application mode of three universal adhesive systems on interfacial physical properties of indirect composite restorations adhesively cemented to dentin cavities. Seventy-eight bovine lower incisors were selected and a slice of dentin (thickness: 2 mm) between the buccal surface and pulp chamber was obtained for each tooth. Conical cavities...
Effect of different surface treatments and multimode adhesive application on th...
Souza,Karina Barbosa; Moura,Dayanne Monielle Duarte; Silva,Sarah Emille Gomes da; Araújo,Gabriela Monteiro de; Pinto,Rafael de Almeida SpinelliAbstract This paper aims to evaluate the effect of different surface treatments on surface topography, wettability, and shear bond strength of resin cement to glass ceramic. Methodology: For SBS test, 32 blocks (7x7x2 mm) of lithium disilicate were obtained and randomly divided into eight groups (four blocks per group) according to each surface treatment (HF 20 s, 60 s, 120 s + silanization/S or Scotch Bond Uni...
Interfacial Properties and Bottom/Top Hardness Ratio Produced by Bulk Fill Comp...
Chaves,Letícia Virgínia de Freitas; Oliveira,Samila Neres de; Özcan,Mutlu; Acchar,Wilson; Caldas,Marília Regalado Galvão RabeloAbstract The aim of this study was to evaluate the bond strength, bottom/top hardness ratio, marginal adaptation, and interfacial nanoleakage of regular viscosity bulk fill composites (RVBFC) and regular viscosity traditional composites (RVTC). Two RVBFC (Filtek Bulk Fill and Aura Bulk Fill) and two RVTC (Filtek Z250XT and Aura) were assessed. Forty conical cavities (4.8×2.8×4.0) were prepared in bovine dentin ...
Can the Application of Multi-Mode Adhesive be a Substitute to Silicatized/Silan...
Araújo,Arthur Magno Medeiros de; Januário,Ana Beatriz do Nascimento; Moura,Dayanne Monielle Duarte; Tribst,João Paulo Mendes; Özcan,MutluAbstract This study evaluated the effectiveness of a multi-mode adhesive (SBU-Scotch Bond Universal/3M) as a substitute for silica coating and silane application on the bonding of zirconia ceramics to resin cement. One-hundred and twenty sintered zirconia ceramic blocks (5 x 5 x 5 mm) were obtained, finished by grounding with silicon carbide paper (#600, #800, #1000 and #1200) and randomly divided into 12 group...
Surface degradation of glass ceramics after exposure to acidulated phosphate fl...
Ccahuana,Vanessa Z.S.; Özcan,Mutlu; Mesquita,Alfredo M. M.; Nishioka,Renato S.; Kimpara,Estevão T.; Bottino,Marco A.OBJECTIVE: This study evaluated the surface degradation effect of acidulated phosphate fluoride (APF) gel exposure on the glassy matrix ceramics as a function of time. MATERIAL AND METHODS: Disc-shaped ceramic specimens (N = 120, 10/per ceramic material) were prepared in stainless steel molds (inner diameter: 5 mm, height: 2 mm) using 6 dental ceramics: 3 indicated for ceramic-fused-to-metal (Vita Omega 900, Ca...
Micro-morphological changes prior to adhesive bonding: high-alumina and glassy-...
Bottino,Marco Cícero; Özcan,Mutlu; Coelho,Paulo Guilherme; Valandro,Luiz Felipe; Bressiani,José Carlos; Bressiani,Ana Helena AlmeidaThe aim of this study was to qualitatively demonstrate surface micro-morphological changes after the employment of different surface conditioning methods on high-alumina and glassy-matrix dental ceramics. Three disc-shaped high-alumina specimens (In-Ceram Alumina, INC) and 4 glassy-matrix ceramic specimens (Vitadur Alpha, V) (diameter: 5 mm and height: 5 mm) were manufactured. INC specimens were submitted to 3 ...