Dental Crowns
Mostrando 1-12 de 72 artigos, teses e dissertações.
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1. Influence of Abutment Collar Height and Implant Length on Stress Distribution in Single Crowns
Resumo Este estudo avaliou a influência da altura da porção transmucosa do pilar protético com junção cone morse e do comprimento dos implantes no comportamento biomecânico coroas unitárias com diferentes proporção coroa-implante. Seis modelos virtuais (S11, M11, L11, S13, M13 e L13) foram construídos combinando pilares protéticos com transmucoso
Braz. Dent. J.. Publicado em: 03/06/2019
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2. Time expended on managing molar incisor hypomineralization in a pediatric dental clinic in Nigeria
Abstract This study assessed the difference in the number of visits made to a dental care clinic and the time spent providing specific dental treatment for children with and without molar incisor hypomineralization (MIH). Children aged 8 to 16 years who presented at the Pediatric Dental Unit of the Obafemi Awolowo University Teaching Hospital Complex, in Ile
Braz. oral res.. Publicado em: 06/08/2018
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3. Effect of the time-point of acid etching on the persistence of sealer residues after using different dental cleaning protocols
Abstract: Endodontic sealer residues remaining within the pulp chamber dentin after root canal obturation and cleaning with various solvents may compromise the appearance and the durability of dental restorations. Acid etching is routinely performed prior to application of dentine adhesive systems, but is effect on residual sealer material and the optimal ti
Braz. oral res.. Publicado em: 22/12/2016
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4. LPS levels in root canals after the use of ozone gas and high frequency electrical pulses
Abstract The present study aims to verify the effect of ozone gas (OZY® System) and high frequency electric pulse (Endox® System) systems on human root canals previously contaminated with Escherichia colilipopolysaccharide (LPS). Fifty single-rooted teeth had their dental crowns removed and root lengths standardized to 16 mm. The root canals were prepared
Braz. oral res.. Publicado em: 15/03/2016
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5. Effect of software version and parameter settings on the marginal and internal adaptation of crowns fabricated with the CAD/CAM system
Objective This study investigated the marginal and internal adaptation of individual dental crowns fabricated using a CAD/CAM system (Sirona’s BlueCam), also evaluating the effect of the software version used, and the specific parameter settings in the adaptation of crowns. Material and Methods Forty digital impressions of a master model previously pre
J. Appl. Oral Sci.. Publicado em: 2015-10
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6. Are bovine teeth a suitable substitute for human teeth in in vitro studies to assess endotoxin load in root canals?
The present study aimed to determine the feasibility of using bovine teeth as a suitable alternative for human teeth, in experiments involving in vitro endotoxin contamination. Twenty bovine central incisors and 20 human single-root premolars had their dental crowns removed and root lengths set at 16 mm. Root canals were prepared up to #60 K-file size and st
Braz. oral res.. Publicado em: 03/07/2015
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7. Evaluation of human enamel permeability exposed to bleaching agents
AIM: 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 t
Braz. J. Oral Sci.. Publicado em: 2013-06
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8. Effect of a desensitizing dentifrice on the bond strength of different adhesive systems
AIM: This in vitro study evaluated the effect of using a dental hypersensitivity treatment on the bond strength to dentin of etch-and-rinse and self-etching simplified adhesive systems. METHODS: 40 healthy molars were used. The crowns of teeth were removed at the dentinoenamel junction, and remaining roots were sectioned in the mesiodistal direction along th
Braz. J. Oral Sci.. Publicado em: 2013-06
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9. Confiabilidade de coroas de dissilicato de lítio com diferentes espessuras sob fadiga / Reliability of lithium disilicate crowns with different thickness under fatigue
Para avaliar a confiabilidade à fadiga de coroas de dissilicato de lítio E.max CAD, com 1mm (monolítica) e 2mm de espessura, foi realizado um preparo para coroa total de um primeiro molar inferior com redução de 1 e 2mm. Réplicas em resina composta do preparo baseado em desenho auxiliado pelo computador (CAD) foram posicionadas em um articulador odonto
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/10/2011
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10. Avaliação da permeabilidade dentária de dentes submetidos à reintervenção endodôntica quando obturados com diferentes cimentos / Evaluation of the permeability of dental teeth underwent reintervention when filled with different endodontic cements
The purpose of this study was to evaluate ex vivo the permeability of root canal dentin walls after the removal of three different combinations of filling materials. To this end, 36 extracted human single-rooted premolars, with similar length and anatomy, had surgery access to the pulp chamber, root canal preparation was performed to F4 ProTaper instruments
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/09/2011
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11. Influence of the concentration of hydrofluoric acid and thermal cycling on bond strength between ceramic and resin cement / Influência da concentração do ácido hidrofluorídrico e da ciclagem térmica na resistência da união entre cerâmica e cimento resinoso
O objetivo neste estudo foi avaliar o efeito do condicionamento com ácido hidrofluorídrico ( 5 e 10%) e ciclagem térmica na resistência ao microcisalhamento da interface cimento resinoso RelyX ARC - IPS E.max Press. Foram confeccionadas 20 amostras com cerâmica IPS E.max Press de acordo com a recomendação do fabricante. As amostras foram incluídas em
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
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12. Estudo da radiopacidade de materiais odontológicos indicados como base e forramento de restaurações. Análise através da radiografia digital / Study of the radiopacity of dental materials used as base and liner of restorations. Analysis by digital radiographic
Radiopacity is an important pre-requisite for base and liner materials, once it allows the professional to identify the presence of the material and makes its differentiation from the adjacent tooth structure possible. The aim of this study was to evaluate the radiopacity of liner and base materials and compare to the radiopacity of enamel, dentin and alumin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/06/2011