Results 11 to 20 of about 212,547 (332)

Clinical evaluation of two dental bleaching techniques

open access: yes口腔疾病防治, 2018
Objective To clinically evaluate the bleaching effect, tooth sensitivity and rebound effect (3⁃month fol⁃ low⁃up) of combined bleaching technique and deep bleaching technique.
ZONG Li, ZHAO Ke
doaj   +1 more source

Reconstructing Four Centuries of Temperature-Induced Coral Bleaching on the Great Barrier Reef

open access: yesFrontiers in Marine Science, 2018
Mass coral bleaching events during the last 20 years have caused major concern over the future of coral reefs worldwide. Despite damage to key ecosystem engineers, little is known about bleaching frequency prior to 1979 when regular modern systematic ...
Nicholas A. Kamenos   +1 more
doaj   +1 more source

Cell death and degeneration in the symbiotic dinoflagellates of the coral Stylophora pistillata during bleaching [PDF]

open access: yes, 2004
Rising sea temperatures are increasing the incidences of mass coral bleaching (the dissociation of the coral–algal symbiosis) and coral mortality. In this study, the effects of bleaching (induced by elevated light and temperature) on the condition of ...
Berges , John A.   +3 more
core   +1 more source

Spectrophotometric assessment of tooth bleaching under orthodontic braquets bonded with different materials

open access: yesRevista de Odontologia da UNESP, 2017
Introduction patients have been submitted to tooth bleaching during orthodontic treatment for aesthetic purposes or to anticipate the replacement of restorations after completion of the treatment.
Camila Maria Lima de CASTRO   +4 more
doaj   +1 more source

Do dental bleaching sessions prior to orthodontic treatment change the bond strength of esthetic brackets?

open access: yesDental Press Journal of Orthodontics, 2021
Objective: The aim of this experimental in vitro study was to evaluate whether dental bleaching performed before orthodontic treatment change the shear bond strength (SBS) of monocrystalline and polycrystalline esthetic brackets.
Samara Gasperoni PERCIANO   +5 more
doaj   +1 more source

Evaluating the Effect of Diode Laser Irradiation on Microhardness of Bleached Enamel: An in Vitro Study [PDF]

open access: yesAl-Rafidain Dental Journal, 2022
Aims: To investigate the effect of in-office dental bleaching techniques on the microhardness of enamel and the influence of post bleaching diode laser irradiation on the surface microhardness of bleached enamel. Materials and methods: Forty bovine teeth
Alaa H. Ali, Abduladheem Raouf Sulaiman
doaj   +1 more source

The Effects of Home Bleaching and Laser Bleaching on Tooth Color Change: A Comprehensive Review [PDF]

open access: yesJournal of Mashhad Dental School
Background: This review article aimed to evaluate and compare the color change outcomes of two tooth whitening methods, namely, home bleaching and laser bleaching, and to also assess their efficacy and safety.Methods and Materials: A comprehensive search
Marzieh Rohaninasab, Mohammad Alamdar
doaj   +1 more source

Study on Bleaching Technology of Cotton Fabric with Sodium Percarbonate

open access: yesMATEC Web of Conferences, 2016
Bleach cotton fabric with sodium percarbonate solution. Analyse of the effect of the concentration of sodium percarbonate solution, bleaching time, bleaching temperature and the light radiation on the bleaching effect of fabric.The result shows that ...
Li Zhi, Wang Yanling, Wang Zhichao
doaj   +1 more source

Detecting 2020 Coral Bleaching Event in the Northwest Hainan Island Using CoralTemp SST and Sentinel-2B MSI Imagery

open access: yesRemote Sensing, 2021
In recent years, coral reef ecosystems have been affected by global climate change and human factors, resulting in frequent coral bleaching events. A severe coral bleaching event occurred in the northwest of Hainan Island, South China Sea, in 2020.
Bailu Liu, Lei Guan, Hong Chen
doaj   +1 more source

Skin Bleaching Among African and Afro-Caribbean Women in New York City: Primary Findings from a P30 Pilot Study

open access: yesDermatology and Therapy, 2019
Introduction The application of skin bleaching products to inhibit melanogenesis is a common practice within the African diaspora. Despite the adverse health effects of skin bleaching, rigorous studies investigating skin bleaching behavior among these ...
Emma K. T. Benn   +15 more
doaj   +1 more source

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