Results 181 to 190 of about 2,883 (223)

Effect of tooth bleaching agents on protein content and mechanical properties of dental enamel

Acta Biomaterialia, 2015
This study investigated the effect of two bleaching agents, 16% carbamide peroxide (CP) and 35% hydrogen peroxide (HP), on the mechanical properties and protein content of human enamel from freshly extracted teeth. The protein components of control and treated enamel were extracted and examined on sodium dodecyl sulfate polyacrylamide gel ...
Luiz E Bertassoni, Michael V Swain
exaly   +3 more sources

Acute Toxicity of Carbamide Peroxide and a Commercially Available Tooth-bleaching Agent in Rats

Journal of Dental Research, 1995
Previous studies have indicated that tooth-bleaching agents contain potentially hazardous chemicals. The present study evaluates the acute toxicity of a commercially available tooth-bleaching agent and carbamide peroxide, which is the active bleaching ingredient.
Rune Becher
exaly   +3 more sources

Deionized water can substitute common bleaching agents for nonvital tooth bleaching when treated with non-thermal atmospheric plasma

Journal of Oral Science, 2019
The bleaching efficacy of common bleaching agents and deionized water treated with non-thermal atmospheric pressure plasma in the pulp chamber for nonvital tooth bleaching was evaluated.
Ismail Davut Çapar, Fatma Ibis, Utku Kursat Ercan   +2 more
exaly   +2 more sources

Efficacy of tooth bleaching with the prior application of a desensitizing agent

Journal of Investigative and Clinical Dentistry, 2013
AbstractAimIn the present study, we evaluated the efficacy of bleaching on enamel and opposite dentin surfaces using 35% hydrogen peroxide (HP) with the prior application of a desensitizing agent.MethodsThirty bovine dental fragments, with thicknesses of 1 mm enamel and 1.75 mm dentin, were stained in a solution of black tea.
Juliana, do Carmo Públio, Maria B F, D'Arce, Gláucia M B, Ambrosano, Flávio H B, Aguiar, José R, Lovadino, Luís A M S, Paulillo, Débora A N L, Lima   +6 more
openaire   +2 more sources

An in vitro comparison of different bleaching agents in the discolored tooth

Journal of Endodontics, 1989
Extracted teeth with intact crowns were stained to compare and evaluate the effectiveness of four bleaching agent combinations. Forty-two permanent and 12 deciduous teeth were used. The bleaching agents were placed into coronal pulp chambers and then evaluated and rated at 1-, 3-, 7-, and 14-day and 6-month intervals. New sodium perborate combined with
S, Ho, A C, Goerig
openaire   +2 more sources

Effect of bleaching agents on the microhardness of tooth-colored restorative materials

The Journal of Prosthetic Dentistry, 2006
There is no consensus concerning the effect of bleaching gels on microhardness of restorative materials. Information about the effect of whitening strips on microhardness of restorative materials is also limited.The purpose of this study was to evaluate the effect of a bleaching gel and a whitening strip on the microhardness of 3 tooth-colored ...
Arzu, Mujdeci, Osman, Gokay
openaire   +2 more sources

Over‐the‐counter bleaching agents can help with tooth whitening maintenance

Journal of Esthetic and Restorative Dentistry, 2020
AbstractObjectiveThis study evaluated the influence of over‐the‐counter agents on the maintenance of color and microhardness of the enamel after home bleaching protocol.Materials and methodsSpecimens of bovine teeth (6 × 6 × 2 mm) were prepared, and color (Easyshade, VITA) and microhardness (HMV‐2, Shimadzu) readings were performed.
Olívia, Santana Jorge, Carolina, Noronha Ferraz de Arruda, Rafaella, Tonani Torrieri, Rocio, Geng Vivanco, Fernanda, de Carvalho Panzeri Pires-de-Souza   +4 more
openaire   +2 more sources

Calcium Phosphate Microspheres as a Delivery Vehicle for Tooth-Bleaching Agents

Journal of Dental Research, 2017
Bleaching of vital teeth has become common practice in cosmetic dentistry today. Tooth sensitivity and demineralization of the enamel are, however, common side effects associated with hydrogen and carbamide peroxide bleaching. This study investigated if calcium phosphate microspheres, which have remineralizing properties, could be used as an additive ...
T, Mellgren, T, Qin, C, Öhman-Mägi, Y, Zhang, B, Wu, W, Xia, H, Engqvist   +6 more
openaire   +2 more sources

CLINICAL RATIONALE OF CHOOSING A TOOTH-BLEACHING AGENT.

Georgian medical news, 2021
The aim - to study the efficiency of correction of hard tooth tissues discoloration. The study was conducted on 135 patients with tooth discoloration. Clinical - complex examination of patients with determination of hard tooth tissues color (Vіta scale), indexes of individual oral hygiene, intensity and prevalence of gums inflammation for the study of ...
A, Borysenko, M, Dudnikova
openaire   +1 more source

Effect of Bleaching Agents on the Nanohardness of Tooth Enamel, Composite Resin, and the Tooth-Restoration Interface

Operative Dentistry, 2016
SUMMARYThis in vitro study aimed to evaluate the nanohardness of tooth enamel, composite resin, dental adhesive, and enamel hybrid layer exposed to 35% hydrogen peroxide-based bleaching agents and analyze the tooth-restoration interface using scanning electron microscopy (SEM).
A T, Abe, M N, Youssef, M L, Turbino
openaire   +2 more sources