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https://www.readbyqxmd.com/read/29215687/impact-of-microabrasion-on-the-effectiveness-of-tooth-bleaching
#1
Camila Evelyn Perete-de-Freitas, Paula Damasceno Silva, André Luis Faria-E-Silva
The aim of the present study was to evaluate the effect of prior microabrasion on the teeth color change and tooth bleaching effectiveness. Eight sound molars were mesio-distally sectioned and the halves were randomly allocated to receive enamel microabrasion or non-abrasion (control) in one of surfaces (buccal or lingual), while the remaining surface received the other treatment. The tooth color on baseline was evaluated by spectrophotometer (CieL*a*b system). After the microabrasion procedure, the tooth color was measured again...
September 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29211128/in-office-tooth-bleaching-for-adolescents-using-hydrogen-peroxide-based-gels-clinical-trial
#2
Marcela Leticia Leal Gonçalves, Antonio Carlos da Silva Tavares, Ana Carolina Costa da Mota, Luiz Alberto Plácido Penna, Alessandro Melo Deana, Sandra Kalil Bussadori
The aim of the present study was to evaluate colorimetric changes and tooth sensitivity in adolescents and young patients submitted to tooth bleaching with 20% and 35% hydrogen peroxide. A randomized, controlled, clinical trial was conducted with 53 patients aged 11 to 24 years who were allocated to groups based on the use of the following commercial products: Whiteness HP - FGM® (35% hydrogen peroxide); Whiteness HP Blue Calcium - FGM® (35% hydrogen peroxide); and Whiteness HP Blue Calcium - FGM® (20% hydrogen peroxide)...
November 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29208795/in-vitro-assessment-of-influence-of-various-bleaching-protocols-on-the-strength-of-ceramic-orthodontic-brackets-bonded-to-bleached-tooth-surface-a-comparative-study
#3
Divya Iska, Raghu Devanna, Madhvi Singh, Rajkiran Chitumalla, Sai C Bala Balasubramanian, Manish Goutam
INTRODUCTION: Esthetics is one of the common issues because of which patients consult dental orthodontic treatment. Two ways of tooth bleaching are available these days, which includes in-office bleach and home bleach. Various bleaching protocols are available these days for treating the tooth surfaces. Hence, we planned the present study for investigating the impact of various intracoronal bleaching protocols on shear bond strength of ceramic brackets bonded to tooth surface after bleaching...
December 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29151458/comparison-of-efficacy-and-outcome-satisfaction-between-in-office-and-home-teeth-bleaching-in-chinese-patients
#4
Jie Nie, Fu-Cong Tian, Zu-Hua Wang, Adrian U Yap, Xiao-Yan Wang
This in vivo study aimed to evaluate the efficacy of in-office and home teeth bleaching in Asian patients. Moreover, the correlation between tooth color change and patient's outcome satisfaction was investigated. Overall, 40 Chinese patients were randomly divided into two groups and prescribed in-office (OB) or take-home bleaching (HB). The color of the maxillary central incisor and canine were recorded at baseline, immediately after first treatment, 1 week, and 3 months after treatment by using a spectrophotometer...
November 17, 2017: Journal of Oral Science
https://www.readbyqxmd.com/read/29144879/effectiveness-and-impact-of-the-walking-bleach-technique-on-esthetic-self-perception-and-psychosocial-factors-a-randomized-double-blind-clinical-trial
#5
C Bersezio, J Martin, F Peña, M Rubio, J Estay, R Vernal, Ob Oliveira Junior, E Fernández
OBJECTIVE: This trial evaluates the impact of psychosocial and esthetic self-perceptions of patients undergoing nonvital tooth bleaching using the walking bleach technique. We also assessed the clinical effectiveness of bleaching tooth discoloration. METHODS: Fifty volunteers with nonvital tooth discoloration were enrolled. Teeth were randomized into two groups: 35% hydrogen peroxide (n=25) and 37% carbamide peroxide (n=25). Intracoronal bleaching was performed over four sessions using the walking bleach technique...
November 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29130776/new-insights-into-effects-of-aromatic-amino-acids-on-hydroxyapatite
#6
Y R Guo, X Yang, X W Feng, Y Sa, M Wang, P Li, T Jiang
Biomimetics inspired by superstructures and extraordinary properties of teeth have resulted in tooth repair and the generation of novel materials. However, little attention has been paid to tooth color, whose origin remains unknown. Based on recent studies, fluorophores-mainly aromatic amino acids (AAAs) in proteins-might be responsible for tooth color. We synthesized carbonated hydroxyapatite (HA; the mineral phase of teeth) in the presence of different amino acids (AAs; the basic units of protein matrix of teeth) as a simplified model of teeth to explore the color source at the AA level...
November 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29125909/calcium-phosphate-microspheres-as-a-delivery-vehicle-for-tooth-bleaching-agents
#7
T Mellgren, T Qin, C Öhman-Mägi, Y Zhang, B Wu, W Xia, H Engqvist
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 without hindering the diffusion of the bleaching agent and if the spheres could be used as a carrier for carbamide peroxide. A remineralizing agent could increase the safety of bleaching and decrease the severity of its side effects...
November 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29109320/effects-of-the-ratio-between-pigment-and-bleaching-gel-on-the-fracture-resistance-and-dentin-microhardness-of-endodontically-treated-teeth
#8
Marina Og Galloza, Keren Cf Jordão-Basso, Matheus C Bandeca, Samuel O Costa, Alvaro H Borges, Mateus R Tonetto, Fabio C Tirintan, Kátia C Keine, Milton C Kuga
INTRODUCTION: The aim of this study was to evaluate the effects of bleaching gel using 35% hydrogen peroxide (HP), associated with red carmine pigment (RC), in the 3:1 or 1:1 ratio, on fracture resistance and dentin microhardness of endodontically treated teeth. MATERIALS AND METHODS: A total of 40 lower incisors were endodontically treated and divided into four groups (n = 10), according to the bleaching protocol: G1 (HP3), 35% HP + RC (3:1); G2 (HP1), 35% HP + RC (1:1); G3 (positive), 38% HP; and G4 (negative), unbleached...
November 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29109310/in-situ-effect-of-nanohydroxyapatite-paste-in-enamel-teeth-bleaching
#9
Yasmin Sb de Lima Gomes, Larissa D Alexandrino, Cristiane de M Alencar, Eliane B Alves, Kelson Cf Faial, Cecy M Silva
AIM: Evaluate in situ the effect of nanohydroxyapatite paste (nano-HAP) before bleaching with hydrogen peroxide 35% (HP35%) by ion chromatography (IC) Knoop hardness number (KHN) and tristimulus colorimetry (TC). MATERIALS AND METHODS: A total of 60 fragments were obtained from third molars included (3 mm × 3 mm × 3 mm) and the specimens were divided into three groups (n = 20): Gas chromatography (CG) (negative control group) = no bleaching; HP35% (positive control group) = HP35% whitening (whiteness HP35%); nano-HAP = application for 10 minutes before bleaching treatment + HP35%...
November 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29099376/interdental-papilla-formation-after-diastema-closure
#10
Leticia Ferreira de Freitas Brianezzi, Bárbara Margarido Brondino, Giuliana Campo Chaves, Sérgio Kiyoshi Ishikiriama, Adilson Yoshio Furuse
Due to improvements in esthetic dentistry, the number of patients seeking to obtain a more harmonious smile has increased. A 40-year-old woman was referred for treatment because she was dissatisfied with the effect that diastemas and a conoid tooth had on her smile. Her maxillary anterior teeth were relatively short, resulting in a compromised esthetic relationship between height and width. Orthodontic treatment for better distribution of her teeth was recommended to the patient, but she refused, wanting faster and less expensive treatment...
November 2017: General Dentistry
https://www.readbyqxmd.com/read/29072222/effects-of-at-home-and-in-office-bleaching-agents-on-the-shear-bond-strength-of-metal-ceramic-and-composite-brackets-to-enamel
#11
M Rahul, P Anil Kumar, Amal S Nair, Shino Mathew, Antony Shijoy Amaladas, Anna Ommen
AIMS AND OBJECTIVES: This study aimed to evaluate the effects of at-home and in-office bleaching on the shear bond strength (SBS) of metal, ceramic, and composite orthodontic brackets and to compare their SBSs. SUBJECTS AND METHODS: A total of 96 human lower premolar teeth were used for this study. Six teeth were used for scanning electron microscopic study while the remaining ninety were divided into three equal groups. Each group was further subdivided into three subgroups with ten samples each...
September 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/29071038/evaluation-of-the-effect-of-different-laser-activated-bleaching-methods-on-enamel-susceptibility-to-caries-an-in-vitro-mode
#12
Sajjad Ashnagar, Abbas Monzavi, Mehdi Abbasi, Mahdi Aghajani, Nasim Chiniforush
Introduction: Today, bleaching is a routine noninvasive alternative for treatment of discolored teeth. The aim of this study was to determine whether conventional or laser activated bleaching predispose teeth to develop caries or not. Methods: Sixty human molars were mounted on acrylic cylinders and their Knoop microhardness (KHN) as well as DIAGNOdent (DD) values were recorded. They were divided into 4 experimental groups; G1) conventional bleaching with 40% hydrogen peroxide gel, G2) Diode laser assisted bleaching with same gel, G3) Nd:YAG laser assisted bleaching with the same gel, G4) control group...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29069156/effectiveness-of-a-new-non-hydrogen-peroxide-bleaching-agent-after-single-use-a-double-blind-placebo-controlled-short-term-study
#13
Mozhgan Bizhang, Julia Domin, Gholamreza Danesh, Stefan Zimmer
INTRODUCTION: Tooth whitening represents perhaps the most common aesthetic procedure in dentistry worldwide. The efficacy of bleaching depends on three aspects: bleaching agent, bleaching method, and tooth color. OBJECTIVE: This in vivo study aimed to examine whitening effects on frontal teeth of the upper and lower jaws using an over-the-counter (OTC) non-hydrogen peroxide bleaching agent in comparison to a placebo after one single use. MATERIAL AND METHODS: Forty subjects (25 female; 15 male) participated in this double-blind randomized placebo-controlled trial...
September 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29042734/influence-of-bleaching-regimen-and-time-elapsed-on-microtensile-bond-strength-of-resin-composite-to-enamel
#14
Fulya Toksoy Topcu, Ugur Erdemir, Emre Ozel, Murat Tiryaki, Elif Aybala Oktay, Esra Yildiz
OBJECTIVES: The aim of this study was to evaluate the effects of time elapsed since bleaching and different bleaching regimens on the microtensile bond strength of resin composite to enamel. METHODOLOGY: Forty flattened buccal enamel surfaces were divided into four groups: An unbleached (control) group and three bleaching groups. Control group specimens were not subjected to a bleaching regimen (Group 1), while those in the bleaching groups were bleached as follows: opalescence 10% (Group 2), whiteness perfect 16% (Group 3), and whiteness hydrogen peroxide 35% (Group 4)...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28989123/effect-of-two-minute-application-of-35-sodium-ascorbate-on-composite-bond-strength-following-bleaching
#15
Eman H Ismail, Evren Kilinc, Patrick C Hardigan, James K Rothrock, Jeffrey Y Thompson, Cristina Garcia-Godoy
AIM: The aim of this study is to assess the effect of 35% sodium ascorbate on microtensile bond strength of dentin immediately after bleaching with 35% hydrogen peroxide. MATERIALS AND METHODS: A total of 25 sound human 3(rd) molars were collected. Teeth were randomly divided into five groups for different treatments: Group I [bleaching + immediate bonding (i.e., restoration)], group II (bleaching + delayed bonding), group III (bleaching + sodium ascorbate + immediate bonding), group IV (bleaching + sodium ascorbate + delayed bonding), and group V (bonding only)...
October 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28944380/bleaching-efficacy-of-ozone-hydrogen-peroxide-versus-hydrogen-peroxide-ozone-application
#16
Mahmoud K Al-Omiri, Ra'ed S Abul Hassan, Andrej M Kielbassa, Edward Lynch
OBJECTIVE: To compare the efficacy of tooth bleaching after using ozone, before and after application of hydrogen peroxide (H2O2). METHOD AND MATERIALS: In total, 120 extracted teeth were assigned to three groups (n = 40 in each group). Teeth were bleached using 38% H2O2 application for 20 minutes followed by use of the ozone (delivered by means of the healOzone X4 device) for 60 seconds in group 1, via ozone for 60 seconds then 38% H2O2 for 20 minutes in group 2, and via 38% H2O2 for 20 minutes (plus normal air, delivered by the healOzone X4 device for 60 seconds) in group 3 (control)...
September 22, 2017: Quintessence International
https://www.readbyqxmd.com/read/28940976/fracture-resistance-of-simulated-immature-teeth-after-internal-bleaching-procedures
#17
Emel Uzunoglu, Ayhan Eymirli, Mehmet Özgür Uyanik, Emre Nagas, Zafer Cavit Çehreli
The aim of this study was to evaluate the fracture resistance of simulated immature teeth after internal bleaching. The teeth were assigned as follows (n = 12/group); Group-1: The pulp chamber was filled with ProRootMTA and bleached intracoronally with sodium perborate mixed with 37% carbamide peroxide gel; Group-2: The pulp chamber was filled with ProRootMTA without bleaching; Group-3: The pulp chamber was filled with Biodentine and bleached intracoronally as Group-1; Group-4: The pulp chamber was filled with Biodentine without bleaching; and Group-5: Teeth received no intervention (control)...
September 21, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28932242/analysis-of-the-chemical-modification-of-dental-enamel-submitted-to-35-hydrogen-peroxide-in-office-whitening-with-or-without-calcium
#18
Rudá França Moreira, Fábio Pinheiro Santos, Estevão Antero Santos, Ramon Silva Dos Santos, Marcelino José Dos Anjos, Mauro Sayão de Miranda
PURPOSE: The purpose of this study was to evaluate changes in calcium and phosphorus content in dental enamel when subjected to "in-office" whitening for an extended time by using a 35% hydrogen peroxide solution, with and without calcium. MATERIALS AND METHODS: 10 human teeth, from which the roots had been removed, were embedded in epoxy resin, and their surfaces were smoothed. The specimens were divided into two groups; in group 1, a whitening solution without calcium was used, while in group 2, the solution included calcium...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28898421/tooth-bleaching-with-low-temperature-plasma-lowers-surface-roughness-and-streptococcus-mutans-adhesion
#19
S-H Nam, S-M Ok, G-C Kim
AIM: To evaluate the structural-morphological changes in enamel surface roughness and Streptococcus mutans adhesion after tooth bleaching using plasma in combination with a low concentration of 15% carbamide peroxide (CP). METHODOLOGY: Sixty pairs of premolars were randomly assigned to the treatment groups (n = 30; buccal surface, groups 1A/2A) or controls (n = 30; palatal surface, Groups 1B/2B). Group 1A received a low concentration of 15% CP and low-temperature plasma...
September 12, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28893130/clinical-and-patient-reported-outcomes-of-bleaching-effectiveness
#20
Eva Klaric Sever, Zrinka Budimir, Matea Cerovac, Mario Stambuk, Matej Par, Dubravka Negovetic Vranic, Zrinka Tarle
OBJECTIVE: The objective of this study is to evaluate clinical and patient reported outcomes of different bleaching products. MATERIALS AND METHODS: Thirty participants were randomly divided into three bleaching groups (n = 10). Bleaching was performed with high concentrations of hydrogen peroxide (HP) - Boost (40%) and Dash (30%), and with prefabricated splints Bite&White (6% HP). Tooth colour was measured before, immediately after, and 1 and 6 months after the bleaching by using classical shade guide and spectrophotometer...
September 11, 2017: Acta Odontologica Scandinavica
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