Clinical Trial Evaluating Color Change and Tooth Sensitivity Throughout and Following In-office Bleaching

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Low Concentration H2O2/TiO_N in Office Bleaching: A Randomized Clinical Trial

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Immediate and late analysis of dental pulp stem cells viability after indirect exposition to alternative in-office bleaching strategies

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Color alteration, hydrogen peroxide diffusion, and cytotoxicity caused by in-office bleaching protocols

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

In-Office dental bleaching efficacy assessment in function of the light exposure regime by digital colometric reflectance spectroscopy

In-office dental bleaching has been subject of several studies. Generally those studies quantify through visual analysis, the shade reduction of the teeth submitted to different bleaching protocols (light sources, bleaching agent concentrations and irradiation time). The objective of this work is the determination of the influence of four irradiation protocols on the obtainment of better aesthetic results using a colorimetric spectrophotometer that quantifies color changes in each situation imposed. Forty bovine incisors were selected in function of similar anatomic characteristics; a concentrated coffee solution was used to stain the teeth. A commercial spectrophotometer was used to measure the color changes during evolution of the experiment (stain and bleaching phases) and the obtained data was analyzed by the ANOVA test. The obtained data showed the evolution of teeth color during the staining period, as well as, the color reduction that each bleaching protocol achieved. Based on our findings it is possible to conclude that bleaching protocols with larger irradiation periods did not showed significant differences when compared with shorter irradiation protocols, in that way the use of protocols with 30 min or more of consecutive irradiation are not clinically justified and also can cause several side effects.

Response of human pulps to different in-office bleaching techniques: preliminary findings

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Folklore, fad, and fashion: The concept of misconduct in science redefined

This study is an analytical investigation of the nature and implications of the current conceptions of scientific misconduct, arguing that the question of what constitutes misconduct in science is significantly more complex than what conventionally has been believed. Complicating the definitions of misconduct are the differences between professional science and non-scientific professions, in their respective norms of what constitutes valid knowledge, and what counts as appropriate and inappropriate practice. While institutionalized science claims that there is clear differentiation between its standards of validity and those of the non-scientific professions, this paper argues that, when it comes to misconduct, the perceived boundaries between the scientific and non-scientific professions are breached; the practice standards that science currently employs in self-policing misconduct have come to resemble the minimal juridical standards of practice that other professions employ. This study attempts, despite erosion of these traditional boundaries, to move from legalistic standards of scientific practice to intramural standards of practice, and in so doing, to hold scientific practice to a higher standard than ordinary public conduct. The result is a clearer understanding of scientific misconduct to aid those individual scientists who are required to make onerous determinations about the appropriateness of specific practices by their peers. ^

A summary of the politico-economic changes taking place during Vladimir Putin's first term in office; Chechnya and Russia: The significance of the Chechen problem for contemporary Russia. OSW Study 11/2003

Putin's first term in office: The most significant achievement of Vladimir Putin's team over the three years of his term of office is the realisation of legislative changes, which may constitute a base for further - more detailed - political and economic reforms. This is, to a certain degree, a return to the economic tasks set out by a team of reformists in the early 1990s, which were impossible to realise at the time due to conflicts between the Kremlin and legislative powers. Chechnya and Russia: The purpose of this analysis is to examine the significance of the Chechen issue for contemporary Russia. Part I discusses the history of the conflict from 1991 to date and the impact of developments in the republic on Russia as a whole. Part II is an attempt to indicate the areas of Russian reality that are most deeply affected by the Chechen problem.

Estudo in vitro do efeito de dois géis de branqueamento in-office, na composição e morfologia do esmalte dentário

Dissertação para obtenção do grau de Mestre no Instituto Superior de Ciências da Saúde Egas Moniz

Survey results for fire loads and live loads in office buildings /

"Prepared by the Office of Housing and Building Technology, Center for Building Technology, Institute for Applied Technology, National Bureau of Standards, Washington, D.C."

Report of the trial of James H. Peck : judge of the U.S. district court for the district of Missouri, before the Senate of the U.S. on an impeachment preferred by the House of Representatives against him for high misdemeanors in office /

Mode of access: Internet.

Business training manual : containing a complete course of instruction in office routine, shipping, marine insurance and banking /

Mode of access: Internet.