This in vitro study evaluated the effectiveness of whitening dentifrices for the removal of extrinsic tooth stains. Twenty dental blocks (4 x 4 mm), including enamel and dentine, removed from freshly extracted bovine incisors, were randomly divided into 4 groups: G1--distilled water, G2--Colgate, G3--Crest Extra Whitening and G4--Rapid White. In all specimens, the dentin was covered with colorl...

The study aims at awareness and ignorance of a common man towards oral hygiene in Mumbai. To evaluate awareness regarding oral hygiene practices a survey was conducted among 2000 people visiting a dentist. A structured questionnaire was used to collect information. Among various brands Colgate was found out to be the most popular toothpaste brand. 54.6% people do not know about the specialties ...

AIMS (1) To determine the pulpal sensory thresholds in human teeth obtained from using various EPT conducting media and (2) to determine whether there are gender differences. METHODOLOGY One intact maxillary central incisor was randomly selected from each of 40 participants (20 male, 20 female) aged 19-24 year. A constant-current electrical stimulator (University of Bristol, UK) was used to a...

OBJECTIVE This study evaluated the bioavailability of fluoride after topical application of a dual-fluoride varnish commercially available in Brazil, when compared to Duraphat. MATERIAL AND METHODS The urinary fluoride output was evaluated in seven 5-year-old children after application of the fluoride varnishes, in two different phases. In the first phase (I), children received topical applic...

PURPOSE To compare the safety and efficacy of a manual toothbrush and a battery-operated power toothbrush in two separate studies, one utilizing a single-use design and the other a 3-month parallel-group design. MATERIALS AND METHODS The toothbrushes compared in the two studies were the Oral-B CrossAction manual toothbrush and the Colgate Actibrush battery-operated power toothbrush. The singl...

The purpose of this article is to present the actions developed to create the health care model at the Special Indigenous District - Xingu (DSEI-Xingu); particularly regarding oral health. An effective partnership established among the following institutions University Federal of State São Paulo, University of São Paulo at Ribeirão Preto College of Dentistry and Colgate, allowed the development...

Haptic displays can be considered to be devices which generate mechanical impedances. ‘Impedance’ here is defined as a dynamic relationship between velocity and force. The behavior of the haptic display depends on the virtual environment being rendered. For instance, if the desired behavior is that of a point mass, the haptic display must exert forces proportional to acceleration. Similarly, if...

The interlingua approach to machine translation (MT) is characterized by the following two stages: 1) translation of the source text into an intermediate representation, an artificial language (interlingua) which is designed to capture the various types of meaning of the source text and 2) translation from the interlingua into the target text. Over the years a number of MT projects tried to dev...

OBJECTIVES The purpose of this study was to evaluate the changes in dentinal permeability (i.e. hydraulic conductance) after prophylactic treatment performed using prophy-powders with air-polishing system or prophy-pastes applied on exposed middle dentine. The changes in dentine morphology were evaluate by SEM. STUDY DESIGN Several prophylactic pastes or air-polishing powders were tested in t...

The aim of this clinical study was to evaluate tooth color changes (ΔE) and tooth sensitivity (TS) associated with whitening dentifrices. Sixty participants were selected according to inclusion and exclusion criteria and then allocated to three groups (n = 20): Colgate Luminous White (G1), Close Up White Now (G2) and Sorriso dentifrice (G3-control). The participants were instructed to use only ...