نتایج جستجو برای: enamel bleaching

تعداد نتایج: 16293  

Journal: :General dentistry 2016
Sandrine Bittencourt Berger Ricardo Danil Guiraldo Murilo Baena Lopes Paula Vanessa Oltramari-Navarro Thais Maria Fernandes Renata de Castro Alves Schwertner Wagner José Silva Ursi

The application of bleaching agents before placement of resin-bonded fixed appliances significantly, but temporarily, reduces bond strength to tooth structure. Antioxidants have been studied as a means to remove residual oxygen that compromises bonding to bleached enamel. This in vitro study evaluated whether green tea (GT) could restore the shear bond strength between bonded orthodontic bracke...

Journal: :Journal of biomedical optics 2013
Larissa Sgarbosa Napoleão de Araújo Paulo Henrique dos Santos Rodolfo Bruniera Anchieta Anderson Catelan André Luiz Fraga Briso Ana Carolina Soares Fraga Zaze Renato Herman Sundfeld

Pigments of food and beverages could affect dental bleaching efficacy. The aim of this investigation was to evaluate color change and mineral loss of tooth enamel as well as the influence of staining solutions normally used by adolescent patients undergoing home bleaching. Initial hardness and baseline color were measured on enamel blocks. Specimens were divided into five groups (n=5): G1 (cont...

2015
Karen Pintado-Palomino Camila Tirapelli

OBJECTIVE This study aimed to evaluate in vitro the effect of formulations containing Biosilicate to treat enamel and dentin bovine samples exposed to dental bleaching agents. MATERIALS AND METHODS On enamel and dentin bleached with commercial gels containing 16% carbamide peroxide (CP) (14 days/4 h) or 35% hydrogen peroxide (single session/45 min), desensitizing dentifrices (Sensodyne(®); ex...

Journal: :Oral 2022

The increase in aesthetic demands has increased the use of ceramic dental restorations dentistry. Ceramic are bonded to tooth structure using adhesives. There is a lack standard guidelines terms post-bleaching time intervals and bond strengths restorations. Bleaching products have also been stated affect morphology enamel. Therefore, purpose this systematic review evaluate strength between enam...

2016
Maryam Khoroushi Farinaz Shirban Sara Kaveh Samaneh Doustfateme

OBJECTIVES The aim of this in vitro study was to evaluate the effect of incorporating three different nanobiomaterials into bleaching material on microhardness of bleached enamel. MATERIALS AND METHODS The crowns of 24 extracted sound human molars were sectioned. Sixty enamel specimens (2 × 3 × 4 mm) were selected and divided into five groups (n = 12): Group 1 received no bleaching procedure ...

2015
Swagata Das

Aim: To assess the influence of two adhesive systems on the bond strength of the restorative material to enamel and dentin after bleaching. Materials and method: 60 non-carious extracted premolar teeth after bleaching with 40% Hydrogen peroxide were divided into four groups based on type of adhesive system used and the tooth surface i.e. enamel and dentin used for bonding. G1ET and G3DT were re...

2017
Cristiane de Melo Alencar Victor Feliz Pedrinha Jesuína Lamartine Nogueira Araújo Renata Antunes Esteves Ana Daniela Silva da Silveira Cecy Martins Silva

BACKGROUND Dental whitening has been increasingly sought out to improve dental aesthetics, but may cause chemical and morphological changes in dental enamel surfaces. OBJECTIVE This study evaluated in vitro the effect of 10% strontium chloride and 5% potassium nitrate with fluoride on bovine enamel, through tristimulus colorimetry, Knoop microhardness (KHN), and roughness after bleaching with...

Journal: :European journal of orthodontics 2005
H Bulut A D Kaya M Turkun

Various studies have reported a significant reduction in tensile bond strength of brackets when bonding is carried out immediately after bleaching. The purpose of this investigation was to determine the effect of an antioxidant agent on the tensile bond strength values of metal brackets bonded with composite resin to human enamel after bleaching with carbamide peroxide (CP). A total of 80 extra...

Journal: :Brazilian oral research 2013
Eda Güler Nihan Gönülol Özgün Yusuf Özyilmaz Ali Çagin Yücel

We investigated the effect of sodium ascorbate (SA) on the microtensile bond strengths (MTBSs) of different composites to bovine enamel after vital bleaching with hydrogen peroxide (HP) or carbamide peroxide (CP). Thirty bovine incisors were randomly divided into five groups and treated with no bleaching application (control), 35% HP alone, 35% HP+10% SA for 10 minutes (HP+SA), 16% CP alone, or...

Journal: :journal of dentistry, tehran university of medical sciences 0
m. ghavamnasiri a. habibi-rad

statement of problem: due to the growing popularity of vital bleaching by carbamide peroxide it is imperative to understand the effect of such agents on enamel and dentine. purpose: the purpose of this study was to evaluate the effect of a 16% carbamide peroxide bleaching gel; vivastyle on enamel staining susceptibility. materials and methods: thirty bovine specimens were selected and randomly ...

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