Teeth Abrasion
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Avaliação da resistência de união de uma cerâmica de óxido de zircônia submetida a tratamentos de superfície por abrasão
Resumo Introdução A cimentação adesiva, com cerâmicas puras, é um passo relevante no estabelecimento da longevidade de trabalhos protéticos, sendo estes os melhores materiais utilizados para a reposição de dentes perdidos, de forma a reabilitar o sorriso. O sistema cerâmico de zircônia não se beneficia do tratamento com ácidos e necessita de di
Rev. odontol. UNESP. Publicado em: 12/09/2019
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2. Use of dentifrices to prevent erosive tooth wear: harmful or helpful?
Dental erosion is the loss of dental hard tissues caused by non-bacterial acids. Due to acid contact, the tooth surface becomes softened and more prone to abrasion from toothbrushing. Dentifrices containing different active agents may be helpful in allowing rehardening or in increasing surface resistance to further acidic or mechanical impacts. However, dent
Braz. oral res.. Publicado em: 14/01/2014
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3. Abrasion wear resistance of different artificial teeth opposed to metal and composite antagonists
One of the most important properties of artificial teeth is the abrasion wear resistance, which is determinant in the maintenance of the rehabilitation's occlusal pattern. OBJECTIVES: This in vitro study aims to evaluate the abrasion wear resistance of 7 brands of artificial teeth opposed to two types of antagonists. MATERIAL AND METHODS: Seven groups were p
Journal of Applied Oral Science. Publicado em: 2009-10
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4. Influence of HEMA content on the mechanical and bonding properties of experimental HEMA-added glass ionomer cements
The purpose of this study was to determine the influence of incrementally added uncured HEMA in experimental HEMA-added glass ionomer cement (HAGICs) on the mechanical and shear bond strength (SBS) of these materials. Increasing contents of uncured HEMA (10-50 wt.%) were added to a commercial glass ionomer cement liquid (Fuji II, GC, Japan), and the compress
Journal of Applied Oral Science. Publicado em: 2009-08
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5. Resistencia ao impacto da união dente-resina acrilica sob efeito da desinfecção simulada por energia de microondas / Effect of simulated microwave disinfection on bond strength of acry teeth and denture base resins
The aim of this study was to evaluate the effect of microwave disinfection in bond strength of acrylic teeth and a denture base resin. A hundred sixty rectangular wax patterns (30x15x5mm) were embedded in flasks with type III dental stone. After cristalization, the resulting moulds were filled with laboratorial silicone (Zetalabor), in which a molar acrylic
Publicado em: 2009
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6. Effectiveness of high speed instrument and air abrasion on different dental substrates
The aim of this study was to compare the effectiveness of high speed (HS) and air abrasion (AA) instruments on groups of teeth (deciduous, permanent, bovine), in terms of preparation time, topography and presence of smear layer. Each group consisted of 5 teeth that had their buccal/lingual surfaces prepared by using either HS or AA. All procedures were stand
Brazilian Oral Research. Publicado em: 2008-09
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7. Dental trauma involving root fracture and periodontal ligament injury: a 10-year retrospective study
The purpose of this retrospective study was to analyze the cases of traumatic dental injuries involving root fracture and/or periodontal ligament injury (except avulsion) treated at the Discipline of Integrated Clinic, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Brazil, from January 1992 to December 2002. Clinical and radiographic
Brazilian Oral Research. Publicado em: 2008-09
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8. Fissure sealants: in vitro evaluation of abrasion wear and superficial roughness
The aim of this study was to compare the in vitro wear and superficial roughness of four materials (Delton Dyract Flow, Dentsply; Filtek Flow, Vitremer, 3M ESPE) used as fissure sealant in 32 extracted human molars divided in four groups (n = 8) after abrasion with toothbrush/dentifrice. Impressions of each occlusal surface were made to analyze wear and circ
Materials Research. Publicado em: 2008-06
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9. Influence of resin-composite formulation on the intra-oral degradation : in vitro study / Influencia da formulação de resinas compostas na resistencia a degradação intra-oral : estudo in vitro
Natural teeth, as well as restorations, are composed of materials that are subject to deterioration. Besides chemical, mechanical and thermo degradation, the formulation and post-cure composites network are dominant mechanism to determine the restorations longevity. The purpose of this study was to investigate the effect of materials formulation, light
Publicado em: 2008
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10. Avaliação da resistência à abrasão, microdureza superficial e estabilidade de cor de dentes artificiais de resina acrílica / Evaluation of the abrasion resistance, superficial microhardness and color stability of acrylic resin artificial teeth.
The objective of this work was to evaluate in vitro the abrasion resistance, the superficial microhardness and the color stability of acrylic resin artificial teeth. Seven groups (1-Biolux, 2 - Trilux, 3 - Blue Dent, 4 - Biocler, 5 - Orthosit-Vivodent, 6 - Postaris-Antaris, 7 - Gnathostar-Ivostar), composed of 12 upper premolar for each manufacturers, being
Publicado em: 2007
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11. Degradação de materiais restauradores resinosos e do esmalte deciduo e permanente em soluções simuladoras da dieta / Degradation of resin-based restorative materials and deciduous and permanent enamel in food-simulating media
The oral cavity can be considered a hostil environment. The dental structure and the restorative materials are constantly subjected to thermal, mechanical and chemical stresses. The interplay of these factors is directly related with the longevity/stability of the restorative treatment, and also with the dental structure preservation. The effect of diet cons
Publicado em: 2007
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12. Influence of radiation on properties of composite restorative resin / Influencia da radiação nas propriedades de compositos odontologicos
The aim of the present study was to evaluate the effects of different )f radiation doses produced by cobalt-60 teletherapy unit on two types of restorative dental materials: 3M Filtek TM A 110 used for forward teeth restorations and condensable SureFilTM used for back teeth restorations. Seventy five specimens were fabricated, 25 were submitted to Knoop hard
Publicado em: 2006