نتایج جستجو برای: peroxide bleaching

تعداد نتایج: 38303  

Journal: :Brazilian dental journal 2013
Flávio Fernando Demarco Marcus Cristian Muniz Conde Caroline Ely Eliana Nascimento Torre José Ricardo Souza Costa María Raquel Fernández Sandra Beatriz Chaves Tarquinio

This study evaluated the preferences of general dentists regarding vital and nonvital tooth bleaching therapies and investigated whether the time of clinical practice and post-graduate training influence these options. A cross-sectional study was conducted using a questionnaire with closed questions applied to dentists (n=276) of a mid-sized city of the southern Brazil (Pelotas, RS). Informatio...

Journal: :Medicina oral, patologia oral y cirugia bucal 2008
Ulvi Kahraman Gursoy Digdem Isin Eren Ozden Ozel Bektas Feridun Hurmuzlu Vildan Bostanci Hakan Ozdemir

OBJECTIVES Treatment of dental discolorations with external bleaching is becoming very common in dentistry, however, possible irreversible alterations on enamel surface due to bleaching procedures is a topic of discussion. The aim of this study was to evaluate the clinical effects of bleaching by measuring the dental plaque accumulation on human enamel and tooth discoloration in vivo. STUDY D...

2015
Roeland Jozef Gentil De Moor Jeroen Verheyen Andrii Diachuk Peter Verheyen Maarten August Meire Peter Jozef De Coster Filip Keulemans Mieke De Bruyne Laurence James Walsh

The use of optical radiation for the activation of bleaching products has not yet been completely elucidated. Laser light is suggested to enhance the oxidizing effect of hydrogen peroxide. Different methods of enhancing hydrogen peroxide based bleaching are possible. They can be classified into six groups: alkaline pH environment, thermal enhancement and photothermal effect, photooxidation effe...

Journal: :The journal of contemporary dental practice 2001
R W Gerlach X Zhou

Rapid innovation in vital bleaching has increased the popularity of tooth whitening among dental professionals and patients. A broad range of peroxide-based treatments are currently available including those that are professionally-administered (in-office), professionally-dispensed (custom-tray-based systems), and self-directed (over-the-counter). Recently, a novel, flexible polyethylene bleach...

Journal: :علوم و تکنولوژی پلیمر 0
پیمان ولیپور محمداسماعیل یزدان شناس مجید منتظر نقی سعادت جو

0

Journal: :journal of dentistry, tehran university of medical sciences 0
z. khamverdi associate professor, dental research center, hamadan university of medical sciences, hamadan, iran sh. ebadi assistant professor, department of operative dentistry, school of dentistry, hamadan university of m m. movahhed rad dentist, department of operative dentistry, school of dentistry, hamadan university of medical scien sh. kasraei associate professor, dental research center, hamadan university of medical sciences, hamadan, iran

objective: bleaching of the teeth is considered as a safe, effective, and conservative procedure to treat discolored teeth. the aim of the present study was to compare the amount of mercury and silver released from amalgam after applying two brands of carbamide peroxide 16% bleaching gel. materials and methods: for this experimental study, 384 amalgam tablets were prepared. the samples were kep...

2017
Ana-Cristina Pimenta-Dutra Rodrigo-de Castro Albuquerque Luís-Fernando-dos Santos-Alves Morgan Geraldo-Magela Pereira Eduardo Nunes Martinho-Campolina-Rebello Horta Frank-Ferreira Silveira

BACKGROUND This study aimed to evaluate changes in the enamel surface of bovine teeth after whitening with exogenous bleaching agents: 10% carbamide peroxide (group 1), 16% carbamide peroxide (group 2) and 35% hydrogen peroxide activated by a light-emitting diode (LED) (group 3). The evaluations were performed by scanning electron microscopy (SEM). MATERIAL AND METHODS Ninety bovine teeth wer...

Journal: :Quintessence international 1992
V B Haywood

This article reviews the literature on the use of hydrogen peroxide in three professionally administered bleaching techniques from historical, technique, and safety viewpoints. Safety over time, absolute safety, and relative safety of nonvital bleaching, in-office vital bleaching, nightguard vital bleaching, and over-the-counter bleaching kits are compared. The advantages and disadvantages of d...

2017
Larissa Dias ALEXANDRINO Cristiane de Melo ALENCAR Ana Daniela Silva da SILVEIRA Eliane Bemerguy ALVES Cecy Martins SILVA

Objective This randomized, controlled, double-blind clinical study evaluated the effect of calcium sodium phosphosilicate (NovaMin) and casein phosphopeptide-amorphous calcium phosphate with fluoride (CPP-ACPF) on the prevention of post-operative sensitivity and on the effects of clinical bleaching treatment. Material and Methods Sixty volunteers were selected according to inclusion and exclu...

2003
Van B Haywood

After reading this article, the reader should be able to: • describe the process of nightguard vital bleaching and discuss indications and contraindications. • list the situations amenable to at-home whitening, including extended bleaching times for tetracyclinestained teeth. • explain how to treat side effects, such as tooth sensitivity during whitening. • discuss treatment options for a singl...

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