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1.
Clín. int. j. braz. dent ; 11(1): 30-42, jan.-mar.2015. ilus
Article in Portuguese | LILACS | ID: lil-789778

ABSTRACT

Reabilitações com próteses implantossuportadas são usadas frequentemente para resolver casos de edentulismo. Elas podem ser retidas por de meio de parafusos ou agentes de cimentação. No entanto, nos casos de alinhamento inadequado dos implantes ou fragilidade pelo desenho final da estrutura protética, o sistema de parafusamento convencional não pode ser utilizado. Um método alternativo para se manter a reversibilidade da peça protética é o parafusamento transverso. Este consiste em um sistema tubo/parafuso de dimensões reduzidas que possibilita o parafusamento em uma área palatina ou lingual. Entretanto, aperfeiçoamentos nos sistemas existentes comercialmente eram necessários para se suprirem dificuldades como custo, técnica de confecção e dimensões dos componentes. O presente artigo apresenta o desenvolvimento de um produto adequado para este método, para suprir as desvantagens dos sistemas anteriores, apresenta a técnica de confecção clínica e laboratorial, e discute os aspectos fundamentais no planejamento desse sistema...


Implant-supported prostheses are frequently used in oral rehabilitation to solve cases of edentulism. They may be screw-retained or cement-retained. However, sometimes conventional screw-retained systems can not be used in cases of improper alignment of implants or compromised structural integrity of the prosthesis. An alternative method to maintain reversibility of the rehabilitation is cross-pinning. This system consists of a tube/screw with reduced dimensions which enables screwing in a palatal or lingual area. However, improvements in the commercially existing systems have been necessary to overcome difficulties such as costs, manufacturing technique and component dimensions. This paper presents the development of an appropriate product for this method, allowing to overcome the disadvantages of previous systems and analyzes the clinical and laboratory steps discussing the fundamental aspects of planning when using this system...


Subject(s)
Humans , Female , Young Adult , Dental Prosthesis Retention , Dental Prosthesis, Implant-Supported , Jaw, Edentulous , Stress, Mechanical
2.
Clín. int. j. braz. dent ; 8(3): 272-283, jul.-set. 2012. ilus
Article in Portuguese | LILACS, BBO | ID: lil-716631

ABSTRACT

A odontologia adesiva tem evoluído bastante, com isso, tratamentos estéticos com resinas compostas diretas são utilizados como meio conservador de integrar e harmonizar o complexo dental anterior. Isso se deve à melhora das propriedades dos compósitos nos últimos cinco anos. No entanto, o profissional, mesmo utilizando as novas resinas compostas, deve balancear e individualizar as necessidades de cada caso clínico. Muitas vezes, tal tratamento falha, por não considerar toda a composição facial, portanto, antes de focalizar os dentes, é fundamental analisar a face como moldura da beleza estrutural, os lábios e o sorriso. Assim, o processo pela busca da beleza do conjunto deve ser sempre objetivado. O presente artigo apresenta algumas estratégias para facilitar o planejamento e a execução clínica da remodelagem do sorriso com resina composta, possibilitando trabalhar com maior previsibilidade de resultados a máxima preservação da estrutura dental sadia. Com dois anos de acompanhamento, o tratamento mostrou-se satisfatório e a cosmética direta permaneceu natural ao longo do tempo


Adhesive dentistry evolved a lot and consequently, esthetic treatments with direct composites are used as a way to restore harmony and integration of the anterior teeth. This occurred mainly due to the improvements of composite’s properties in the last 5 years. However, along with the use of composites with proven performance, one should consider the individual needs of each clinical treatment. Most of the situations, this treatment approach fails to consider the facial complex. In this sense, before seeking to focus only on the teeth, it is essential to analyze the face as a frame of structural beauty, lips and smile. The aim of this study is to present strategies in order to facilitate the clinical planning and make smile remodeling with composite resin, with higher predictability and maximal preservation of sound tooth structure. After a two-year follow-up, the treatment was satisfactory, showing that the cosmetic remodeling with composites continues to be natural over the time


Subject(s)
Humans , Female , Young Adult , Composite Resins , Esthetics, Dental , Smiling
3.
Braz. oral res ; 24(2): 245-249, Apr.-June 2010. tab
Article in English | LILACS | ID: lil-553916

ABSTRACT

This study evaluated the Knoop Hardness (KHN) values of two dual-cured composite resin core build-up materials and one resin cement exposed to different curing conditions. Two dual-cured core build-up composite resins (LuxaCore®-Dual, DMG; and FluoroCore®2, Dentsply Caulk), and one dual-cured resin cement (Rely X ARC, 3M ESPE) were used in the present study. The composite materials were placed into a cylindrical matrix (2 mm in height and 3 mm in diameter), and the specimens thus produced were either light-activated for 40 s (Optilux 501, Demetron Kerr) or were allowed to self-cure for 10 min in the dark (n = 5). All specimens were then stored in humidity at 37°C for 24 h in the dark and were subjected to KHN analysis. The results were submitted to 2-way ANOVA and Tukey's post-hoc test at a pre-set alpha of 5 percent. All the light-activated groups exhibited higher KHN values than the self-cured ones (p = 0.00001), regardless of product. Among the self-cured groups, both composite resin core build-up materials showed higher KHN values than the dual-cured resin cement (p = 0.00001). LuxaCore®-Dual exhibited higher KHN values than FluoroCore®2 (p = 0.00001) when they were allowed to self-cure, while no significant differences in KHN values were observed among the light-activated products. The results suggest that dual-cured composite resin core build-up materials may be more reliable than dual-cured resin cements when curing light is not available.


Subject(s)
Composite Resins/chemistry , Hardness Tests , Light-Curing of Dental Adhesives/methods , Resin Cements/chemistry , Self-Curing of Dental Resins/methods , Analysis of Variance , Curing Lights, Dental , Composite Resins/radiation effects , Materials Testing , Post and Core Technique/instrumentation , Resin Cements/radiation effects , Temperature , Time Factors
4.
Rev. dental press estét ; 6(1): 90-101, jan.-mar. 2009. ilus
Article in Portuguese | LILACS, BBO | ID: lil-543716

ABSTRACT

É crescente a procura por tratamentos que visam o restabelecimento da estética dentária com a utilização de resinas compostas. A estética dentária pode ser comprometida por traumas ou alterações na cor, tamanho ou formas dos dentes. Este trabalho relata casos clínicos envolvendo o fechamento de diastemas e a restauração de dente fraturado através de mínimas intervenções com resinas compostas.


Subject(s)
Humans , Female , Adult , Composite Resins , Dental Enamel , Diastema , Tooth Fractures , Dentin , Esthetics, Dental , Dental Restoration, Permanent/methods , Smiling
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