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Bleaching teeth

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https://www.readbyqxmd.com/read/29042734/influence-of-bleaching-regimen-and-time-elapsed-on-microtensile-bond-strength-of-resin-composite-to-enamel
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/28891537/clinical-performance-of-a-combined-approach-for-the-esthetic-management-of-fluorosed-teeth-three-year-results
#8
E U Celik, B Yazkan, G Yildiz, A T Tunac
OBJECTIVE: The long-term clinical performance of combined therapy including enamel microabrasion and vital bleaching is debatable due to the abrasion of outer enamel surface. The aim of this longitudinal cohort study was to evaluate the 3-year clinical performance of enamel microabrasion in combination with vital tooth bleaching for the esthetic management of fluorosed teeth. MATERIALS AND METHODS: Fifteen patients with 176 fluorosed incisors and canines were included in this study...
August 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28858418/effect-of-access-design-on-intracoronal-bleaching-of-endodontically-treated-teeth-an-ex-vivo-study
#9
Melissa Andreia Marchesan, Christopher Michael James, Adam Lloyd, Brian Ray Morrow, Franklin García-Godoy
OBJECTIVES: To determine the effect of access design on intracoronal bleaching with 35% carbamide peroxide on discolored teeth. MATERIALS AND METHODS: Forty-two intact maxillary central incisors were selected, sectioned and artificially stained using whole blood. Color measurements were performed with a spectrophotometer: before staining (T1), after staining (T2), at 7 (T3), and 14 (T4) days postbleaching. After T1, specimens were stratified and divided randomly into two groups according to access design (N = 20): G1: contracted endodontic cavity (CEC) access performed with a #848-010M bur and G2: traditional endodontic cavity (TEC) access done with a #1157 bur...
August 31, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28857196/the-effect-of-dental-bleaching-on-pulpal-tissue-response-in-a-diabetic-animal-model-a-study-of-immunoregulatory-cytokines
#10
L L Ferreira, J E Gomes-Filho, F Benetti, M Carminatti, E Ervolino, A L F Briso, L T A Cintra
AIM: To evaluate the influence of tooth bleaching on immunoregulatory cytokines production (IL-6, Tumour necrosis factor (TNF)-α and IL-17) in the pulp tissue of normoglycaemic and diabetic rats. METHODOLOGY: Twenty-eight rats were divided into normoglycaemic and diabetic rats (n = 14). Diabetes mellitus (DM) was induced with a single dose of alloxan diluted in citrate buffer via intramuscular injection. After DM confirmation, all rats were sedated and tooth bleaching was performed using 35% hydrogen peroxide on the right maxillary molars for 30 min...
August 30, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28842116/no-evidence-of-differences-in-color-changes-between-walking-bleach-technique-and-inside-out-technique-in-patients-with-nonvital-discolored-teeth
#11
Romina Brignardello-Petersen
No abstract text is available yet for this article.
August 19, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28840044/cosmetic-remodeling-of-the-smile-combining-composite-resin-and-ceramics-over-teeth-and-implants
#12
Leonardo Fernandes da Cunha, Ubiracy Gaião, Rafael Coutinho Silva, Carla Castiglia Gonzaga, Gisele Maria Correr
The aim of this paper is to describe a restorative approach to the cosmetic remodeling of the teeth of a young adult patient with right maxillary lateral hypodontia and left lateral microdontia. A conservative restorative management was proposed to improve smile esthetics by combining direct composite resins and ceramics. Initially, periodontal therapy and dental bleaching were performed. Subsequently, direct composite resins were applied to the central incisors and canines to reestablish the sizes and shapes of these teeth...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28829933/effect-of-a-new-bleaching-gel-on-tooth-whitening
#13
T N Barry, C W Bailey, D Ashcraft-Olmscheid, K S Vandewalle
The purpose of this study was to compare the whitening efficacy of a novel bleaching agent containing a unique tribarrel hydremide-peroxide gel (KöR) with a traditional bleaching system of hydrogen peroxide or carbamide peroxide (Opalescence). Bovine incisors were mounted into a custom resin, arch-shaped mounting device. Four groups of 10 teeth were created using mounting devices containing five teeth each. The in-office and home bleaching gels of KöR and Opalescence were applied to the teeth alone and in trays to simulate a combination of in-office and home bleaching or home bleaching only...
September 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28808454/concurrent-effects-of-bleaching-materials-and-the-size-of-root-canal-preparation-on-cervical-dentin-microhardness
#14
Maryam Kazemipoor, Shaghayegh Azad, Farnaz Farahat
INTRODUCTION: The aim of the present study was to evaluate the concurrent effect of root canal preparation size and intra coronal bleaching on dentin microhardness. METHODS AND MATERIALS: Seventy-two intact anterior teeth were root canal treated and randomly divided into two groups (n=36) according to the size of coronal root canal preparation. The coronal portions of the canals were then enlarged with #2 and 4 Peeso reamers, respectively. Following root canal obturation, teeth were assigned into three groups (n=12) to be treated with bleaching agents containing 35% hydrogen peroxide (HP), sodium perborate (SP) and distilled water as control group...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28765671/evaluation-of-the-diode-laser-810nm-980-nm-on-color-change-of-teeth-after-external-bleaching
#15
Nazanin Kiomars, Pouneh Azarpour, Mansooreh Mirzaei, Sedighe Sadat Hashemi Kamangar, Mohammad Javad Kharazifard, Nasim Chiniforush
Subject and aim: The aim of this study was to evaluate the efficiency of diode laser-activated bleaching systems for color change of teeth. Materials & Methods: 40 premolars with intact enamel surfaces were selected for five external bleaching protocols (n=8). Two different wavelengths of diode laser (810 and 980 nm) with two different hydrogen peroxide concentrations (30% and 46%) were selected for laser bleaching. Group 1 received bleaching (Heydent- Germany) with a 810 nm diode laser; Group 2 received bleaching (Heydent- Germany) with a 980 nm diode laser; Group 3 received bleaching (laser white*20- Biolase) with a 810 nm diode laser; Group 4 received bleaching (laser white*20- Biolase) with a 980 nm diode laser, with an output power of 1...
December 30, 2016: Laser Therapy
https://www.readbyqxmd.com/read/28762354/a-comparison-of-various-minimally-invasive-techniques-for-the-removal-of-dental-fluorosis-stains-in-children
#16
Aarushi Gupta, Renuka Dhingra, Payal Chaudhuri, Anil Gupta
CONTEXT: Dental fluorosis is caused by successive exposure to high concentrations of fluoride during tooth development leading to enamel with lower mineral content and increased porosity. AIMS: The aim of the study was to evaluate and compare the effectiveness of minimally invasive techniques for the removal of dental fluorosis stains in children in vivo. DESIGN: Ninety children in the age group of 10-17 years were selected. MATERIALS AND METHODS: The study sample was equally and randomly divided into three groups; Group 1: In-office bleaching with 35% hydrogen peroxide (HP) activated by light-emitting diode (LED) bleaching unit (35% HP), Group 2: Enamel microabrasion (EM) followed by in-office bleaching with 44% carbamide peroxide gel (EM), Group 3: In-office bleaching with 5% sodium hypochlorite (5% NaOCl)...
July 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28740741/ten-year-follow-up-of-a-fragment-reattachment-to-an-anterior-tooth-a-conservative-approach
#17
Luiz Mendes, Laisa Laxe, Leandro Passos
This report describes the 10-year follow-up data of a patient who underwent fragment reattachment to the maxillary central incisor after coronal fracture with pulp exposure as well as the procedures followed for functional and esthetic adjustments. A 9-year-old female patient presented at the clinic of dentistry at the State University of Rio de Janeiro with a coronal fracture and pulp exposure of the right maxillary central incisor that had occurred immediately after an accident. The intact tooth fragment was recovered at the accident site and stored in milk...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28734081/whitening-dependent-changes-of-fluorescence-of-extracted-human-teeth
#18
Natalie Pereira Sanchez, Aleksandar Aleksic, Miroslav Dramicanin, Rade D Paravina
OBJECTIVE: To evaluate in vitro the fluorescence properties of extracted human teeth whitened with 40% hydrogen peroxide. MATERIALS AND METHODS: A total of 28 extracted human teeth were pumiced for 1 minute using a low-speed dental handpiece and a disposable rubber cup. Pre-whitening fluorescence measurements (T0), maximum excitation (Exmax ), maximum emission (Emmax ), and maximum intensity (Imax 10(8) ), were performed using a spectrofluorometer. After T0 measurements, the teeth were whitened using the in-office method with 40% hydrogen peroxide, three times for 20 minutes...
July 22, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28717632/effect-of-different-intracoronal-bleaching-methods-on-shear-bond-strength-of-ceramic-brackets-bonded-to-bleached-enamel-an-in-vitro-study
#19
Vikas Chauhan, Piush Kumar, Payal Sharma, Divya Shetty
OBJECTIVE: To investigate the effect of different intracoronal bleaching methods on the shear bond strength and site of failure of ceramic brackets. MATERIALS AND METHODS: Sixty freshly extracted human maxillary incisors were randomly divided into four groups (n = 15). Endodontic access cavity was prepared and root canals were filled, root fillings were removed 2mm apical to the cementoenamel junction, and a 2-mmthick layer of glass ionomer cement base was applied...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28713111/effect-of-hydrogen-and-carbamide-peroxide-in-bleaching-enamel-morphology-and-mineral-composition-in-vitro-study
#20
Carmen Llena, Irene Esteve, Leopoldo Forner
AIM: The aim of the study was to evaluate the bleaching effect, morphological changes, and variations in calcium (Ca) and phosphate (P) in the enamel with hydrogen peroxide (HP) and carbamide peroxide (CP) after the use of different application regimens. MATERIALS AND METHODS: Four groups of five teeth were randomly assigned, according to the treatment protocol: HP 37.5% applied for 30 or 60 minutes (HP30, HP60), CP 16% applied for 14 or 28 hours (CP14, CP28). Changes in dental color were evaluated, according to the following formula: ΔE = [(La-Lb)(2)+(aa-ab)(2) + (ba-bb)(2)](1/2)...
July 1, 2017: Journal of Contemporary Dental Practice
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