All Ceramic Crowns
Mostrando 13-23 de 23 artigos, teses e dissertações.
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13. Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems
Advances in all-ceramic systems have established predictable means of providing metal-free aesthetic and biocompatible materials. These materials must have sufficient strength to be a practical treatment alternative for the fabrication of crowns and fixed partial dentures. OBJECTIVES: The aim of this study was to compare the biaxial flexural strength of thre
Journal of Applied Oral Science. Publicado em: 2010-12
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14. Influence of surface treatment and cyclic loading on the durability of repaired all-ceramic crowns
OBJECTIVE: This study investigated the durability of repaired all-ceramic crowns after cyclic loading. MATERIAL AND METHODS: Eighty In-ceram zirconia crowns were fabricated to restore prepared maxillary premolars. Resin cement was used for cementation of crowns. Palatal cusps were removed to simulate fracture of veneering porcelain and divided into 4 groups
Journal of Applied Oral Science. Publicado em: 2010-04
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15. CAD/CAM Zirconia vs. slip-cast glass-infiltrated Alumina/Zirconia all-ceramic crowns: 2-year results of a randomized controlled clinical trial
The aim of this randomized controlled clinical trial was to compare the early clinical outcome of slip-cast glass-infiltrated Alumina/Zirconia and CAD/CAM Zirconia all-ceramic crowns. A total of 30 InCeram® Zirconia and Cercon® Zirconia crowns were fabricated and cemented with a glass ionomer cement in 20 patients. At baseline, 6-month, 1-year, and 2-year
Journal of Applied Oral Science. Publicado em: 2009-02
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16. Evaluation of failure mode of ceramic crowns with and without framework design modification. / Avaliação do modo de falha de coroas cerâmicas com e sem alteração do desenho das infraestruturas
Ceramic crowns have been widely used, however, problems related to brittle fracture of these materials persist, especially in the posterior area. The present study tested the null hypothesis that there were no differences in fatigue resistance related to the framework design as well as to the materials used. One maxillary molar was prepared, reproducing the
Publicado em: 2009
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17. Influence of the type of framework system in the adaptation and microleakage of all-ceramic crowns / Influência do tipo de sistema de infra-estrutura na adaptação e microinfiltração de coroas totais cerâmicas
The objectives of this study were to quantify the microleakage and the loss of marginal adaptation before and after cementation of all-ceramic crowns, with four types of infrastructure systems, and to compare these parameters. After approval by the Committee on Ethics in Research of Dental School of University of São Paulo, 40 human third molars received al
Publicado em: 2008
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18. Efeito da altura do remanescente coronário, do tipo de reconstrução interna e do tipo de coroa restauradora na deformação e resistência à fratura de dentes anteriores tratados endodonticamente
The endodontically treated teeth restoration is important aspect in dental practice and involves many treatment options with varying complexity. The aim of this study was to evaluate the strain, fracture resistance and failure mode of endodontically treated teeth depending of the post and core type, the ferrule presence, restored with metallic or ceramics re
Publicado em: 2008
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19. Fracture resistance of metal-ceramic and all-ceramic crowns made with and without reinforced coping design / Avaliação da resistência à fratura em coroas metalocerâmicas e ceramocerâmicas, utilizando infra-estruturas com e sem reforço
As restaurações metalocerâmicas apresentam relatos de sucesso clínico a longo prazo e as características de reforço (cinta lingual e poste proximal) das infra-estruturas metálicas parecem ser de grande importância para este sucesso. Estes reforços freqüentemente estão ausentes nas infraestruturas das restaurações ceramocerâmicas. O objetivo des
Publicado em: 2007
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20. Avalição in vitroda resistência ao cisalhamento de braquetes colados em diferentes sistemas cerâmicos / In vitro short-term evaluation of shear strength of brackets bonded to different porcelain systems
Orthodontic treatment in the adult population has lately gained popularity in an attempt to improve esthetic and function. It is, however, a common feature in these patients, that their dentition is restored by resin veneers, porcelain fused to metal and all ceramic crowns. In this context, the orthodontist faces the challenge of bonding brackets to differen
Publicado em: 2007
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21. Dental ceramics and the molar crown testing ground
All ceramic crowns are highly esthetic restorations and their popularity has risen with the demand for life-like and cosmetic dentistry. Recent ceramic research has concentrated on developing a fundamental understanding of ceramic damage modes as influenced by microstructure. Dental investigations have elucidated three damage modes for ceramic layers in the
Journal of Applied Oral Science. Publicado em: 2004
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22. ANALYSIS OF STRESS DISTRIBUTION IN DIFFERENT FINISHING LINES OF SINGLE ALL-CERAMIC CROWNS / ANÁLISE DA DISTRIBUÇÃO DE TENSÕES EM DIFERENTES TERMINAÇÕES CERVICAIS DE COROAS UNITÁRIAS TOTALMENTE CERÂMICAS
This work presents a finite element analysis of the stress distribution in teeth restored by single all-ceramic crowns with different types of finishing lines. In order to obtain the 2-D numerical model, three models of the mandibular molar teeth region were created considering a real anatomic piece and were then used to simulate the application of all-ceram
Publicado em: 2003
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23. Avaliação clínica de inlays e onlays confeccionados com dois tipos de cerâmica após 02 anos. / Clinical evaluation of ceramic inlays and onlays made with two systems after 2 years
The dental ceramics have been a restorative option, largely utilized in posterior teeth, due to an excellent esthetics. Several types of all ceramic systems are available in the market to fabricate partial restorations and crowns. The aim of this study was to evaluate the clinical performance of ceramic inlays and onlays made with two systems: sintered (Duce
Publicado em: 2003