A major drawback to clinicians prescribing and patients using chlorhexidine rinse is the development of extrinsic staining. In order to assess the effectiveness of a whitening dentifrice in controlling chlorhexidine stain, fifty-seven subjects rinsed with chlorhexidine twice daily while brushing twice daily with either fluoridated whitening or a fluoridated regular dentifrice. Stain was assesse...

Black stain is characterized as a dark line or an incomplete coalescence of dark dots localized on the cervical third of the tooth. Over the last century, the etiology of black stain has been the subject of much debate. Most of the studies concerning this issue were conducted in pediatric population. According to the reviewed articles published between 2001 and 2014, the prevalence of black sta...

1. Doubtful specificity. Not only mucins accept the stain; other elements such as nuclei, connective tissues, &c, may do so as well. 2. Loss of stain. In some cases where mucin is stained in a specific manner by dilution of the stain used, by adjustment of the pH of the stain solution, or by metachromatic properties of the stain, it is frequently difficult or impossible to dehydrate, clear, and...

OBJECTIVE The purpose of the study is to determine whether the Gram stain method is superior to the clinical criteria for the diagnosis of bacterial vaginosis in low-income pregnant women seen in a resident clinic setting. The clinical criteria is the current diagnostic method employed to diagnose bacterial vaginosis. STUDY DESIGN In this study, 51 pregnant women with vaginal discharge were p...

Rapid diagnosis is a prerequisite for institution of effective treatment and reducing the mortality and morbidity of falciparum malaria. This study was taken up to compare the efficacy of various rapid methods viz, acridine orange, Plasmodium falciparum histidine rich protein II antigen detection and Field's stain with traditional microscopy i.e, Leishman stain for diagnosing falciparum malaria...

Wir berichten über den Einbau klassischer Teerfarben (Michlers Keton, Methylen Blau, Rhodamin B und Kristallviolett) in selbstassemblierte Strukturen der Formel [Pd2L4]. Die Chromophore wurden unter Verwendung von Piperazin-Linkern bis-monodentate Liganden integriert. Dies erlaubt die Erhaltung für intensive Farbgebung verantwortlichen auxochromen Dialkylamin-Funktionen. mit Pyridin-Donoren bil...

PURPOSE To evaluate the extrinsic stain profiles of two experimental stannous-containing dentifrice prototypes compared to two marketed control dentifrices. METHODS This was a 5-week, randomized, four-treatment, parallel group, double-blind clinical trial of healthy adults. Following a baseline Lobene Stain Index evaluation, subjects received a prophylaxis limited to the 12 anterior teeth to ...

Acquired port-wine stain is a rare vascular lesion that mimics a congenital port-wine stain clinically and histologically, but is acquired after birth. A survey on more than 60 reported cases in the literature reveals that most of these cases are idiopathic, but some of the cases developed after physical or mechanical trauma, hormonal changes, chronic sun exposure, and medications (OCP, i...