Search results for "Past"

Gingival bleeding reduction using a carbamide peroxide based tooth paste with lactoperoxidase

2011

Introduction: The combination of carbamide peroxide, thiocyanate or enzymes such as amynoglucosidase or gluco-oxidase is able to reduce gingival inflammation. Objective: To evaluate antiseptic efficacy, in relation to reduced gingival bleeding, of a new dentifrice containing carbamide peroxide and lactorperoxidase. Materials and method: A sample of 32 patients, with periodontal pockets of more than 3mm in the vestibular area and 4 mm at interproximal sites, was divided into two groups of 16 and 17 patients respectively. Group A used a dentifrice containing 3% carbamide peroxide and 5% lactoperoxidase plus 0.022% sodium fluoride for three weeks followed by a control dentifrice with only 0.02…

Dentifrices : an update

2010

Objectives; The objective of this paper was to review the published evidence concerning the efficacy and potential for adverse reactions of modern dentifrices toothpastes. Data sources; Publications cited on MEDLINE since 1990. Some further pre-1990 publications are also referenced. Data selection; Studies concerning the efficacy of dentifrices and their components and any related putative adverse incidents. Data extraction; Papers were scrutinised for scientific and trial data. Data synthesis; Data concerning the efficacy of dentifrice components were summarised. Conclusions; The efficacy of fluoride salts in dentifrices in reducing dental caries is well established. Toothpastes, containin…

Effect of addition of Nano hydroxyapatite particles on wear of resin modified glass ionomer by tooth brushing simulation

2016

Background Recently, incorporation of nanohydroxyapatite (NHA) has been suggested to improve the mechanical properties of glass ionomers (GIs). This study aimed to assess the effect of addition of NHA on wear of resin modified glass ionomer (RMGI) by tooth brushing simulation. Material and Methods In this in vitro, experimental study, NHA in 1, 2, 5, 7 and 10wt% concentrations was added to Fuji II LC RMGI powder, and 48 samples (5×5mm) in five experimental and one control group (n=8) were fabricated. After polishing, cleaning and incubation at 37°C for three weeks, the samples were weighed and subjected to tooth brushing simulation in a toothpaste slurry according to ISO14569-1. Then, they …

Evaluation of the Clinical Efficacy of Potassium nitrate Desensitizing Mouthwash and a Toothpaste in the Treatment of Dentinal Hypersensitivity

2012

Potassium Nitrate has been used as a desensitizing agent to treat dentinal hypersensitivity. The effectiveness of a potassium nitrate is evaluated both in the form of a toothpaste and a mouthwash in a clinical study. Thirty patients were assessed using evaporative stimuli and thermal stimuli and response was evaluated using Visual Analogue Scale at baseline, at 2 weeks and 4 weeks. The patients were divided into. group I: fifteen patients who used toothpaste containing 5% potassium nitrate, sodium fluoride, xylitol and triclosan, group II: Fifteen patients who used mouthwash containing 3% potassium nitrate, sodium fluoride, xylitol and triclosan . The results of both the assessment methods …

Characterization of organic matter in topsoils under rain forest and pasture in the eastern Brazilian Amazon basin

1999

In topsoils under forest and 7-, 12- and 17-year-old pastures, organic matter was characterized by analysing C and N distribution in particle-size fractions, the C decomposition rates of soil and particle-size fractions and by employing density-fractionation of macro-organic matter (>150 μm). The C and N associated with clay fractions increased with increasing age of pasture. The weight (%) of macro-organic matter and its heavy fractions (>1.37 g cm–3) also increased with increasing age of pasture. However, in a long-term incubation (100 days), these changes seemed to involve an increase in the C decomposition rate in the topsoil of the oldest pasture. Using the C decomposition rates of par…

Hacia la caracterización del epítopo del autoantígeno en el Síndrome de Goodpasture

2014

El síndrome de Goodpasture (GP) es un desorden autoinmune que cursa con glomerulonefritis rápidamente progresiva y hemorragia pulmonar. El ataque inmunológico se lleva a cabo mediante (auto)-anticuerpos (anticuerpos GP) dirigidos contra el dominio C terminal, no colagenoso (NC1), de la cadena α3 del colágeno IV, presente en la membrana basal glomerular (GBM), así como en la membrana basal alveolar. Tres cadenas α se asocian para construir una molécula de colágeno IV, que recibe el nombre de protómero, dos protómeros de colágeno IV se unen a través de sus extremos NC1 para formar una estructura cuaternaria de naturaleza hexamérica (hexámero) en la red de colágeno IV. Estudios cristalográfico…

Urbanismo y sanidad: los médicos ante la regeneración de la ciudad

2016

Nuevas aportaciones sobre el grabado de Fortea del Plano de T. V. Tosca

2017

Las reformas urbanas de Goerlich: intento de clarificación

2011

Arquitectura y desarrollo urbano. Notas sobre el ensanche de Valencia de 1884

2014

[EN] The city development of Valencia, after its walls were demolished, starts in 1884 with the Enlargement Project by the architects José Calvo Tomás, Luis Ferreres Soler and Joaquín MªArnau Miramón. These three architects were members with number of Royal Academy of Fine Arts of San Carlos and they left important buildings on the new streets created according to alignments designed in the project. A significant work of architecture, later increased with another brilliant contributions, as those of Carlos Carbonell, Jose Mª Manuel Cortina, Francisco Mora or Javier Goerlich, which forms a new urban landscape of cosmopolitan stamp with main two Grandes Vías. All this characterizes nineteenth…