نتایج جستجو برای: bleaching powder

تعداد نتایج: 53308  

Journal: :Dental clinics of North America 2011
Yiming Li

Tooth bleaching using peroxide-based materials is an effective procedure in dentistry. Studies provide evidence on the safety of bleaching by dental professionals. However, concerns and controversy remain regarding the safety of bleaching systems that do not involve dental professionals, especially those available at mall kiosks, salons, spas, and cruise ships. Bleaching causes tooth sensitivit...

A. Foroutan, A. K. Darban, B. Rahnama, E. Taheri-Nassaj, Y. Kianinia,

A method for producing high surface area nano-sized mesoporous alumina from inexpensive Iranian kaolin as raw material is proposed. In this method, first, kaolin was purified for purifying Kaolin, High Grade Magnetic Separation and leaching with HCl and chemical bleaching treatment by using sodium dithionite (Na 2 S 2O4 ) as reducing agent in acidic media (H 2SO 4 ) were used. Pur...

Journal: :Schweizer Monatsschrift fur Zahnmedizin = Revue mensuelle suisse d'odonto-stomatologie = Rivista mensile svizzera di odontologia e stomatologia 2010
Brigitte Zimmerli Franziska Jeger Adrian Lussi

Today, the bleaching of nonvital, discolored teeth is a low-risk routine treatment for improving esthetics. This review article focuses on the etiology of tooth discolorations, different treatment techniques, and risks of bleaching procedures. Some tooth discolorations in endodontically treated teeth are caused by dental treatments. The three most popular techniques for nonvital tooth bleaching...

2016
Eric Dario Acuña Leyla Delgado-Cotrina Francisco Aurelio Rumiche Lidia Yileng Tay

During dental bleaching the staining potential of the surface would increase. This study aims to evaluate the staining susceptibility of one bleached composite resin after the exposure to three different beverages: Peruvian purple corn based beverage (chicha morada), green tea, and distilled water. Thirty disk-shaped specimens of one nanofill composite resin were prepared. The specimens were th...

Journal: :Journal of medical and dental sciences 2008
Tomohiro Tamura Ken-ichi Tonami Hidekazu Takahashi Shiro Mataki Kouji Araki Norimasa Kurosaki

The mechanical properties of dentin are changed after bleaching, although the effects of the bleaching conditions on the tensile strength of dentin have not been determined. In the current study, a tensile test of bovine dentin was conducted after bleaching and the effects of the bleaching conditions were investigated, including the number of bleaching times, the location where the bleaching ag...

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...

2015
Homayoom Alaghemand Sedighe Sadat Hashemi Kamangar Nafiseh Zarenegad Negin Tabari Hoorieh Abedi Soraya Khafri

OBJECTIVES Bleached enamel is more susceptible to staining, and application of remineralizing agents may decrease enamel susceptibility to staining. This study sought to assess the effect of casein phosphopeptide amorphous calcium phosphate (CPP-ACP) on enamel susceptibility to staining during bleaching treatment. MATERIALS AND METHODS Forty central and lateral incisors and first premolar tee...

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...

Journal: :Brazilian oral research 2004
Erica Cappelletto Nogueira Teixeira Cecilia Pedroso Turssi Anderson Takeo Hara Mônica Campos Serra

It has been reported that bond strength of resin to tooth structure can be reduced when the bonding procedure is carried out immediately after the bleaching treatment. This study evaluated the effect of bleaching of non-vital teeth bleaching on the shear bond strength (SBS) of composite resin/bovine dentin interface and the influence of delaying the bonding procedures for different time interva...

Journal: :Brazilian oral research 2015
Andrés Felipe Cartagena Sibelli Olivieri Parreiras Alessandro Dourado Loguercio Alessandra Reis Nara Hellen Campanha

Laser Doppler flowmetry (LDF) is a noninvasive method capable of evaluating variations in pulp blood flow (PBF) and pulp vitality. This method has thus far not been used to assess changes in blood flow after in-office bleaching. The aim of this case series report was to measure changes in PBF by LDF in the upper central incisor of three patients submitted to in-office bleaching. The buccal surf...

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