Results: 19

Avaliação do comportamento das fibras colágenas periodontais durante a progressão da periodontite experimental em ratos

Introdução: A periodontite é uma doença infecto-inflamatória, resultante da disbiose microbiana e da resposta do hospedeiro, que leva à destruição dos tecidos de suporte dentário, inclusive das fibras colágenas periodontais, podendo culminar na perda do elemento dental. Objetivo: Avaliar o com...

Hypertension affects the biocompatibility and biomineralization of MTA, High-plasticity MTA, and Biodentine®

Abstract This study evaluated the effect of hypertension on tissue response and biomineralization capacity of white Mineral Trioxide Aggregate (MTA), High-plasticity MTA (MTA HP), and Biodentine® (BDT) in rats. Polyethylene tubes filled with MTA, MTA HP, BDT, and the control group (empty tubes) were pla...

Remineralizing effect of commercial fluoride varnishes on artificial enamel lesions

Abstract: The aim of this study was to evaluate soluble and insoluble fluoride concentrations in commercial varnishes, and their remineralization effect on artificial caries enamel lesions using surface and cross-sectional microhardness evaluations. Forty bovine enamel blocks were separated into four gro...

Evaluation of dermal collagen stained with picrosirius red and examined under polarized light microscopy

An. bras. dermatol; 93 (3), 2018
Abstract: The special picrosirius red staining highlights the natural birefringence of collagen fibers when exposed to polarized light. The results from birefringence allow to evaluate the organization of the collagen fibers in the tissues. The authors intend to elucidate all steps to obtain and capture ...

Dermatoscopia para establecer márgenes quirúrgicos mínimos en la resección de carcinomas basocelulares
Dermoscopy for establishing the minimal surgical margins in basal cells carcinoma resection

Rev. medica electron; 40 (1), 2018
Introducción: el carcinoma basocelular es la forma más común de cáncer de piel y el proceder quirúrgico es la elección para su tratamiento. Aparece más frecuente en áreas visibles o fotoexpuestas, por lo que en ocasiones, con el fin de preservar tejidos su resección es insuficiente; o por el con...

Carcinoma basocelular. Un reto actual para el dermatólogo
Basal cell carcinoma. An actual challenge for the dermatologist

Rev. medica electron; 40 (1), 2018
RESUMEN El carcinoma basocelular es un tumor maligno de origen epitelial, su crecimiento es lento y rara vez metastiza. Este puede producir destrucción local y comprometer extensas áreas de tejido, cartílago y hueso. Existen variantes clínicas e histológicas y constituye el cáncer más frecuente en...

TiF4 varnish protects the retention of brackets to enamel after in vitro mild erosive challenge

J. appl. oral sci; 26 (), 2018
Abstract The effect of fluoride agents on the retention of orthodontic brackets to enamel under erosive challenge is little investigated. Objective: The aim of this study was to evaluate the effect of titanium tetrafluoride (TiF4) and sodium fluoride (NaF) agents on the shear bond strength of brackets t...

Effects of experimental bleaching agents on the mineral content of sound and demineralized enamels

J. appl. oral sci; 26 (), 2018
Abstract High concentrations of hydrogen peroxide can cause adverse effects on composition and structure of teeth. However, the addition of calcium and fluoride in bleaching agents may reduce enamel demineralization. Objective: To evaluate chemical changes of sound and demineralized enamels submitted to...

Role of Candida species from HIV infected children in enamel caries lesions: an in vitro study

J. appl. oral sci; 25 (1), 2017
Abstract Objectives This study analyzed the capacity of Candida spp. from dental biofilm of HIV infected (HIV+) children to demineralize primary molar enamel in vitro by Transversal Microhardness (TMH), Polarized Light Microscopy (PLM) and the quantity of calcium ions (Ca2+) released from the enamel. ...

Desenvolvimento e caracterização de filmes e comprimidos bucais a base de pectina e goma gelana para liberação tópica de triancinolona

O tratamento farmacológico de patologias bucais é conduzido, geralmente, por via de administração local. No entanto, devido ao pouco tempo de permanência do fármaco no local de ação, esse tratamento pode ser bastante comprometido. Assim, este trabalho teve por objetivo o desenvolvimento de formas...