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Effect of obturation technique using a new bioceramic sealer on the presence of...
SANTOS-JUNIOR,Airton Oliveira; TANOMARU-FILHO,Mário; PINTO,Jáder Camilo; TAVARES,Karina Ines Medina Carita; TORRES,Fernanda Ferrari EstevesAbstract The aim of this study was to evaluate the filling ability of a new ready-to-use calcium silicate-based sealer using thermoplastic or single-cone technique in flattened root canals. Twenty-four flattened distal canals of mandibular molars with a buccolingual diameter 4 or more times larger than the mesiodistal diameter were selected. The root canals were prepared and filled (n = 12), according to the fo...
Influence of voxel size on dentinal microcrack detection by micro-CT after root...
PINTO,Jáder Camilo; COAGUILA-LLERENA,Hernán; TORRES,Fernanda Ferrari Esteves; LUCAS-OLIVEIRA,Éverton; BONAGAMBA,Tito JoséAbstract The aim of this study was to assess the influence of micro-computed tomography (micro-CT) voxel size on dentinal microcrack detection after root canal preparation using rotary heat-treated nickel-titanium files. Curved mesial root canals (n = 24) of mandibular molars were prepared using ProDesign Logic 30/.05 (PDL) or HyFlex EDM 25/.08 (HEDM). The specimens were scanned by micro-CT at 5 μm voxel size b...
Radiopacity of endodontic materials using two models for conversion to millimet...
OCHOA-RODRÍGUEZ,Victor Manuel; WILCHES-VISBAL,Jorge Homero; ROMA,Barbara; COAGUILA-LLERENA,Hernán; TANOMARU-FILHO,Mário; GONÇALVES,AndréaAbstract The aims of the present study were to compare conventional radiography, radiographs digitized with a scanner or photographic camera, and digital radiography, used to evaluate the radiopacity of endodontic materials, and to compare the accuracy of linear and quadratic models used to convert radiopacity values to equivalent millimeters of aluminum (mm Al). Specimens of AH Plus, Endofill, Biodentine and B...
Evaluation of flow and filling of root canal sealers using different methodologies
TORRES,Fernanda Ferrari Esteves; GUERREIRO-TANOMARU,Juliane Maria; PINTO,Jader Camilo; BONETTI-FILHO,Idomeo; TANOMARU-FILHO,MárioAbstract Introduction Flow and filling ability of root canal sealers are indispensable for hermetic sealing of the root canal. Micro-computed tomography (micro-CT) can be used as a complementary methodology to evaluate such properties. Objective To evaluate the flow and filling ability of AH Plus, Endofill and Sealapex by conventional methodology and micro-CT. Material and method The flow of the sealers was ana...
Antibacterial activity of intracanal medications based on calcium hydroxide and...
GUERREIRO-TANOMARU,Juliane Maria; SOUZA AGUIAR,Alana Priscila; CHÁVEZ-ANDRADE,Gisselle Moraima; BERNARDI,Maria Inês Basso; TANOMARU-FILHO,MárioAbstract Introduction Nanoparticles and associations to calcium hydroxide can be used to increase antimicrobial activity. Objective To evaluate antibacterial activity against Enterococcus faecalis and pH of intracanal medications (IM) based on calcium hydroxide (CH) and zinc oxide (ZnO) micro- or nanoparticles, and their association with 0.4% chlorhexidine (CHX). Material and method Root canals from single-root...
Micro-CT analysis of filling ability and porosity of root-end filling materials
TANOMARU-FILHO,Mário; ESPIR,Camila Galletti; NOGUEIRA,Katia Cristina Toledo; TORRES,Fernanda Ferrari Esteves; GUERREIRO-TANOMARU,Juliane MariaAbstract Introduction Filling ability of retrograde cavity and porosity are important properties for root-end filling materials and may be evaluated by using microcomputed tomography (micro-CT). Objective To evaluate filling ability and porosity of root-end filling materials using microcomputed tomography (micro-CT). Material and method Cavities with 1 mm internal diameter and 3 mm depth were prepared in bovine...
Biocompatibility and bioactivity of calcium silicate-based endodontic sealers i...
MESTIERI,Leticia Boldrin; GOMES-CORNÉLIO,Ana Lívia; RODRIGUES,Elisandra Márcia; SALLES,Loise Pedrosa; BOSSO-MARTELO,RobertaMineral Trioxide Aggregate (MTA) is a calcium silicate-based material. New sealers have been developed based on calcium silicate as MTA Fillapex and MTA Plus. Objective The aim of this study was to evaluate biocompatibility and bioactivity of these two calcium silicate-based sealers in culture of human dental pulp cells (hDPCs). Material and Methods The cells were isolated from third molars extracted from a 16-...
Radiopacity and cytotoxicity of Portland cement associated with niobium oxide m...
MESTIERI,Leticia Boldrin; TANOMARU-FILHO,Mário; GOMES-CORNÉLIO,Ana Livia; SALLES,Loise Pedrosa; BERNARDI,Maria Inês BassoObjective Mineral Trioxide Aggregate (MTA) is composed of Portland Cement (PC) and bismuth oxide (BO). Replacing BO for niobium oxide (NbO) microparticles (Nbµ) or nanoparticles (Nbη) may improve radiopacity and bioactivity. The aim of this study was to evaluate the radiopacity and cytotoxicity of the materials: 1) PC; 2) White MTA; 3) PC+30% Nbµ; 4) PC+30% Nbη. Material and Methods For the radiopacity test, sp...