Cast Post And Core
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Current options concerning the endodontically-treated teeth restoration with the adhesive approach
Abstract: Adhesive procedures have changed the way to restore endodontically treated teeth (ETT). It started with the shift from cast post-and-core to fiber post. The original focus on strength also shifted towards failure modes, revealing that catastrophic failures are still a concern when restoring endodontically-treated teeth even with fiber posts. As an
Braz. oral res.. Publicado em: 18/10/2018
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2. Influence of remaining coronal thickness and height on biomechanical behavior of endodontically treated teeth: survival rates, load to fracture and finite element analysis
Abstract Objective To evaluate the effect of restorative strategy (fiber post vs cast post and core), coronal height (0 mm vs 2 mm) and thickness (higher than 1 mm vs lower than 1 mm) on survival rate, fracture resistance and stress distribution. Material and Methods Seventy-two bovine teeth were cleaned and allocated in six groups (n = 12). Twenty-four te
J. Appl. Oral Sci.. Publicado em: 07/05/2018
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3. Effect of root canal preparation, type of endodontic post and mechanical cycling on root fracture strength
Objective: To evaluate the impact of the type of root canal preparation, intraradicular post and mechanical cycling on the fracture strength of roots. Material and Methods: eighty human single rooted teeth were divided into 8 groups according to the instruments used for root canal preparation (manual or rotary instruments), the type of intraradicular post
J. Appl. Oral Sci.. Publicado em: 2014-06
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4. Fracture resistance of endodontically treated teeth restored with different intraradicular posts with different lengths
AIM: This study compared the resistance to fracture of endodontically treated teeth restored with different intraradicular posts with different lengths and full coverage metallic crowns. METHODS: Sixty extracted human canine teeth were randomly divided into 6 groups. Groups CP5, CP75 and CP10 were restored using custom cast post and core (CP) and groups PF5,
Braz. J. Oral Sci.. Publicado em: 2013-03
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5. Stress prediction in a central incisor with intra-radicular restorations
A 2D finite element analysis was applied to calculate shear and von Mises equivalent stresses developed, under masticatory loading, in an upper central incisor restored with cast gold post and carbon fiber reinforced epoxy resin post. Based on the predicted shear stress levels, it is concluded that the gold post model is more prone to shear failure along the
Materials Research. Publicado em: 29/04/2011
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6. Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic device
ABSTRACT OBJECTIVE: The aim of this study was to evaluate the effect of simulated periodontal ligament (SPDL) on custom cast dowel and core removal by ultrasonic vibration. MATERIAL AND METHODS: Thirty-two human maxillary canines were included in resin cylinders with or without SPDL made from polyether impression material. In order to allow tensile testing,
Journal of Applied Oral Science. Publicado em: 2010-10
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7. Fracture strength of flared bovine roots restored with different intraradicular posts
OBJECTIVE: The aim of this study was to evaluate the fracture strength and failure mode of flared bovine roots restored with different intraradicular posts. MATERIAL AND METHODS: Fifty bovine incisors with similar dimensions were selected and their roots were flared until 1.0 mm of dentin wall remained. Next, the roots were allocated into five groups (n=10):
Journal of Applied Oral Science. Publicado em: 2009-12
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8. Influência do tipo de retentor intra-radicular e da radioterapia na deformação, resistência e padrão de fratura de diferentes dentes tratados endodonticamente
The aim of this in vitro study was to evaluate the influence of post type and the radiotherapy effect on strain, fracture resistance and fracture pattern for different teeth endodontically treated. 160 human teeth were selected (n=40): In, incisives; Ca, canines; Pm, pre-molar e Mo, molars. After the endodontically treatment, half of samples (n=20) was subje
Publicado em: 2009
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9. 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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10. Influência da extensão e tipo de retentor intra-radicular na deformacão e resistência à fratura de dentes tratados endodonticamente
Studies concerning the effects of different post systems insertion depth on the strain and fracture resistance of endodontically treated teeth remain controversial. The purpose of this study was to investigate in vitro the effects of different post systems and depth of post insertion on the strain and fracture resistance of endodontically treated bovine inci
Publicado em: 2007
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11. Resistência à fratura e padrões de falha de raízes bovinas enfraquecidas restauradas com diferentes tipos de pino / Fracture strength and failure patterns of flared bovine roots resin-reinforced and restored with different posts
Proposição: Este estudo in vitro comparou a resistência à fratura e os padrões de falha de 5 tipos diferentes de pinos-núcleos cimentados em raízes bovinas. Materiais e métodos: Um total de 50 incisivos bovinos frescos foram utilizados. A coroa, o terço cervical e parte do terço médio radicular foram removidos. Os dentes selecionados foram dividid
Publicado em: 2007
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12. In vitro study of the fit of cast post and core, obtained from different acrylic resin patterns / Estudo in vitro da adaptação de retentores intra-radiculares fundidos, modelados com diferentes resinas acrílicas autopolimerizáveis
Endodontically treated teeth are often mutilated by caries and access requirements. The remaining structure requires special treatment to prevent further destruction. When a large portion of the clinical crown has been lost, it is often impossible to achieve sufficient anchorage of a restoration in the remaining dentin. In such situations, a root-canal-retai
Publicado em: 2005