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Bleaching teeth

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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
#1
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
#2
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
https://www.readbyqxmd.com/read/28712152/teeth-bleaching-with-low-concentrations-of-hydrogen-peroxide-6-and-catalyzed-by-led-blue-450%C3%A2-%C3%A2-%C3%A2-10-nm-and-laser-infrared-808%C3%A2-%C3%A2-%C3%A2-10-nm-light-for-in-office-treatment-randomized-clinical-trial-1-year-follow-up
#3
Patricio Vildósola, Jessica Bottner, Francisca Avalos, Isidora Godoy, Javier Martín, Eduardo Fernández
OBJECTIVES: The aim of this study was to evaluate color longevity after a year of in-office bleaching with gel (6% hydrogen peroxide HP, LED blue/laser infrared activation system) compared to a 35% control concentration in a split-mouth study model. MATERIALS AND METHODS: Thirty-one patients were initially treated. The bleaching procedure with 6% or 35% gel HP was performed randomly in the upper half arcade of each patient. The color was measured at baseline and at 1 week, 1 month, and 1 year using the spectrophotometer Vita Easyshade, Vita Bleached, and Vita classical Shade guide organized by value...
July 16, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28689366/micro-ct-and-fe-sem-enamel-analyses-of-calcium-based-agent-application-after-bleaching
#4
Mauricio Neves Gomes, Flávia Pires Rodrigues, Nick Silikas, Carlos Eduardo Francci
OBJECTIVES: The objective of the present study is to evaluate the effects of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) on bleached enamel. MATERIALS AND METHODS: A bleaching agent (35% hydrogen peroxide) was applied, 4 × 8 min on premolar teeth (n = 8). A CPP-ACP paste was applied for 7 days. Prior and post-treatment, microtomography images were obtained and 3D regions of interest (ROIs) were selected, from outer enamel, extending to 110...
July 8, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28685202/spectrophotometric-analysis-of-the-effectiveness-of-a-novel-in-office-laser-assisted-tooth-bleaching-method-using-er-cr-ysgg-laser
#5
Dimitrios Dionysopoulos, Dimitrios Strakas, Kosmas Tolidis, Effrosyni Tsitrou, Effimia Koumpia, Eugenia Koliniotou-Koumpia
The purpose of this in vitro study was to compare the effectiveness of a novel Er,Cr:YSGG laser-assisted in-office tooth bleaching method with a conventional method by spectrophotometric analysis of the tooth color change. Furthermore, the influence of the application time of the bleaching gel on the effectiveness of the methods and the maintenance of the results 7 days and 1 month after the treatments were also evaluated. Twenty-four bovine incisors were stained and randomly distributed into four groups...
July 7, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28682289/color-assessment-after-bleaching-with-hydrogen-peroxide-versus-ozone-a-randomized-controlled-clinical-trial
#6
Arzu Aykut-Yetkiner, Fahinur Ertuğrul, Ece Eden, Akin Aladağ, Ecem Ergin, Mutlu Özcan
This randomized controlled clinical trial evaluated the color change of teeth bleached with either hydrogen peroxide (HP) or ozone (OZ). A total of 26 patients with a mean age of 36.2 years (SD, 8.7 years) who met the inclusion criteria were enrolled in the study. The subjects were randomly assigned to receive chairside bleaching using 40% HP or gaseous OZ. Maxillary dental arch vacuum trays were constructed with circumferential openings in the middle portion of the maxillary incisors at their labial surfaces...
July 2017: General Dentistry
https://www.readbyqxmd.com/read/28656924/comparison-of-intracoronal-bleaching-methods-on-teeth-discolored-by-different-antibiotic-pastes
#7
E Iriboz, B A Öztürk, S Körklü, B Tarcin, Y G Berker, H S Öveçoğlu
AIM: To compare the bleaching efficacy of sodium perborate with different activation methods on crowns discolored by two different antibiotic pastes. MATERIALS AND METHODS: Eighty-five extracted human incisors were prepared to size #30 using ProTaper rotary instruments. After chemomechanical preparation and irrigation procedures, the specimens received triple antibiotic paste (TAP, n = 40), minocycline paste (MP, n = 40), or calcium hydroxide (n = 5, control group) and coronally sealed with temporary filling material...
June 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28642912/influence-of-10-sodium-ascorbate-gel-application-time-on-composite-bond-strength-to-bleached-enamel
#8
Cintia Gaio Murad, Suellen Nunes de Andrade, Lucio Ramos Disconzi, Eliseu Aldrighi Munchow, Evandro Piva, Renata Correa Pascotto, Sandra Kiss Moura
Objective To analyze bond strength to bleached enamel following application of 10% sodium ascorbate gel. Material and methods Forty third molars were allocated into five groups (n = 8): GP - unbleached specimens restored with composite resin; GN - specimens restored immediately after bleaching; and G15; G30 and G60 (test groups) - bleached specimens treated with 10% sodium ascorbate gel for 15, 30 and 60 min before restoration. The teeth were sectioned and the buccal and lingual faces were restored. After storage in distilled water (37 °C/24 h), sticks of ±0...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28621833/multiple-external-cervical-root-resorptions-after-home-bleaching-treatment-with-22-carbamide-peroxide
#9
Glauco Rodrigues Velloso, Marcos Motta de Freitas, Adriana Terezinha Neves Novellino Alves, Alan Roger Santos Silva, Eliane Dos Santos Porto Barboza, Vittorio Moraschini
Invasive multiple cervical root resorptions after vital tooth bleaching is a rare condition. The aim of this article is to present a case of multiple external cervical root resorptions (ECRR) after a misguided home whitening treatment. A 34-year-old male patient presented with slight sensitivity and mobility in several teeth. Despite the manufacturer's recommendations, the patient used a 22% carbamide peroxide-based tooth bleaching gel at home for 4 consecutive days, at night, on the upper and lower arches...
June 16, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28580541/decalcification-prevention-around-orthodontic-brackets-bonded-to-bleached-enamel-using-different-topical-agents
#10
Ferial Ahmed Msallam, Mohammed El-Awady Grawish, Ahmad Mohammed Hafez, Yasser Lotfy Abdelnaby
BACKGROUND: The present study was conducted to evaluate the effect of different topical agents utilized for prevention of enamel decalcification around orthodontic brackets bonded to bleached and non-bleached enamel. METHODS: Human maxillary premolars (n = 120) were divided into two equal groups. Teeth in group I were left without bleaching while those in group II were bleached with Vivastyle gel. Metal brackets were bonded to all the teeth using light-cured adhesive...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28566845/prevention-and-treatment-of-white-spot-lesions-in-orthodontic-patients
#11
REVIEW
Maryam Khoroushi, Marzie Kachuie
Decalcification of enamel, appearing as white spot lesions (WSLs), around fixed orthodontic appliances is a major challenge during and after fixed orthodontic treatment by considering the fact that the goal of orthodontic treatment is to enhance facial and dental esthetic appearance. Banded or bonded teeth exhibit a significantly higher rate of WSLs compared to the controls with no braces as fixed appliances and the bonding materials promote retention of biofilms. These lesions are managed in the first step by establishing good oral hygiene habits and prophylaxis with topical fluorides, including high-fluoride toothpastes, fluoride mouthwashes, gels, varnishes, fluoride-containing bonding materials, and elastic ligatures...
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28512604/traditional-dentistry-knowledge-among-serbs-in-several-balkan-countries
#12
Dragan V Ilic, Biljana Andjelski Radicevic, Anely Nedelcheva, Ivana Djurovic, Dejan Ostojic
BACKGROUND/AIM: There are still unrevealed treasures of traditional dental medicine, that is, the reason to investigate and present various ways in treatment of oral and orofacial tissues, as well as magic and religious elements involved in representative areas among Serbs. MATERIALS AND METHODS: Information was collected from the elderly non-professional folk dentists and herbalists with the additional help of local physicians and dentists that was done through questionnaire and personal interviews...
April 2017: Journal of Intercultural Ethnopharmacology
https://www.readbyqxmd.com/read/28512546/evaluation-of-the-effect-of-different-enamel-surface-treatments-and-waiting-times-on-the-staining-prevention-after-bleaching
#13
Débora Monteiro, Allyson Moreira, Tulimar Cornacchia, Cláudia Magalhães
BACKGROUND: Bleached dental enamel can be more susceptible to staining than the enamel that has never been bleached, especially right after tooth bleaching. The aim of this study is to evaluate the effect of surface treatments and waiting time prior to contact with dye on bleached enamel staining susceptibility. MATERIAL AND METHODS: One hundred teeth were bleached with 35% hydrogen peroxide (Whiteness HP, FGM) and randomly assigned to G1 artificial saliva, G2 2% sodium fluoride (Flugel, Nova DFL), G3 casein phosphopeptide-amorphous calcium phosphate fluoride paste (CPP-ACPF, MI Paste Plus, GC America), G4 rinse for color maintenance after bleaching (Keep White Rinse, DMC) and G5 polishing with aluminum oxide-impregnated disks (Super Buff Disk, Shofu)...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28512492/in-vitro-sealing-properties-of-calcium-enriched-mixture-and-mineral-trioxide-aggregate-orifice-barriers-during-intra-coronal-bleaching
#14
Negar Moghadam, Amir Ardalan Abdollahi, Hoda Aghabalayi Fakhim, Zahra Borna
INTRODUCTION: This study aimed at evaluating the sealing properties of calcium-enriched mixture (CEM) compared to mineral trioxide aggregate (MTA) as a cervical barriers in intra-coronal bleaching. METHODS AND MATERIALS: In this in vitro study, endodontic treatment was performed on 60 extracted human incisors and canines without canal calcification, caries, restorations, resorption or cracks. The teeth were then randomly divided into two experimental groups and two control groups (n=15)...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28478984/randomized-clinical-trial-of-2-nonvital-tooth-bleaching-techniques-a-1-year-follow-up
#15
Diogo Pedrollo Lise, Gustavo Siedschlag, Jussara Karina Bernardon, Luiz Narciso Baratieri
STATEMENT OF PROBLEM: Controlled clinical trials comparing the effectiveness of the walking bleaching (WB) technique and the inside-outside (I-O) technique used in a short daily regimen are lacking. PURPOSE: The purpose of this randomized clinical trial was to investigate the effectiveness of WB with that of the I-O technique conducted over 4 weeks and to compare color changes after 1 year. MATERIAL AND METHODS: Discolored and endodontically treated anterior teeth received a cervical seal and were randomly divided into groups according to the technique...
May 5, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28467262/comparison-of-effectiveness-and-sensitivity-using-two-in-office-bleaching-protocols-for-a-6-hydrogen-peroxide-gel-in-a-randomized-clinical-trial
#16
P Vildósola, F Vera, J Ramírez, J Rencoret, H Pretel, O B Oliveira, M Tonetto, J Martín, E Fernández
OBJECTIVE: The aim of this blinded and randomized clinical trial was to compare two application protocols (one 36-minute application vs three 12-minute applications). We then assessed the effectiveness of the bleaching and any increase in sensitivity that was induced by bleaching via a split-mouth design. METHODS AND MATERIALS: Thirty patients were treated. One group had a half arch of teeth treated with a traditional application protocol (group A: 3 × 12 minutes for two sessions)...
May 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28400596/the-effect-of-the-teeth-bleaching-with-35-hydrogen-peroxide-on-the-tensile-bond-strength-of-metal-brackets
#17
Giedre Trakiniene, Simona Daukontiene, Vytautas Jurenas, Vilma Svalkauskiene, Dalia Smailiene, Kristina Lopatiene, Tomas Trakinis
The objective of this study was to determine the effects of teeth bleaching on the tensile bond strength of metal brackets bonded with light-curing adhesive system to the human enamel. 40 recently extracted human permanent molars were used for the study. The mesial buccal surface of each tooth was used as a control group and the distal buccal surface was used as an experimental group. Control group surfaces were not submitted to bleaching, while experimental group surfaces were bleached with in-office bleaching material containing 35% hydrogen peroxide...
April 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28387186/efficacy-of-10-percent-carbamide-peroxide-as-an-intracoronal-bleaching-agent-in-nonvital-discolored-primary-teeth-an-in-vitro-study
#18
Miram Abd El Magied Shaheen, Mona Abdallah Elkateb, Niveen Samir Bakry, Omar Abd El Sadek El Meligy
PURPOSE: The purpose of this study was to evaluate, in vitro, the efficacy of 10 percent carbamide peroxide used as an intracoronal bleaching agent in blood-stained primary teeth. METHODS: Thirty extracted primary canines were stained using rabbit blood and randomly divided into two groups of 15 teeth each. Stained teeth in the test group were bleached intracoronally using 10 percent carbamide peroxide for 21 days. The bleaching agent was replaced at days seven and 14...
January 15, 2017: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/28355362/controlled-clinical-trial-addressing-teeth-whitening-with-hydrogen-peroxide-in-adolescents-a-12-month-follow-up
#19
Marcelo Mendes Pinto, Marcela Leticia Leal Gonçalves, Ana Carolina Costa da Mota, Alessandro Melo Deana, Silvia Regina Olivan, Carolina Bortoletto, Camila Haddad Leal de Godoy, Katia Lumi Tanikawa Vergilio, Olga Maria Altavista, Lara J Motta, Sandra Kalil Bussadori
OBJECTIVES: To evaluate the colorimetric change in incisors and canines of adolescents aged 12 to 20 years submitted to at-home whitening and to evaluate satisfaction, sensitivity and discomfort during the procedures through a questionnaire. METHOD: Thirty adolescents were randomly assigned to the following groups: 1) 6.0% hydrogen peroxide (White Class with calcium - FGM); 2) 7.5% hydrogen peroxide (White Class with calcium - FGM); 3) 10% hydrogen peroxide (Oral B 3D White - Oral-B); 4) Control group - placebo...
March 2017: Clinics
https://www.readbyqxmd.com/read/28322603/bond-strength-of-abraded-and-non-abraded-bleached-enamel-to-resin-after-er-cr-ysgg-laser-irradiation
#20
Pedro H C Oliveira, Alessandra Cassoni, Aldo Brugnera, Ilana P Tenório, José A Rodrigues
OBJECTIVE: The objective of the study was to evaluate the microtensile bond strength (μTBS) of a composite resin to abraded or non-abraded bleached enamel after Er,Cr:YSGG laser irradiation and to observe the fracture patterns of the tested interfaces. MATERIALS AND METHODS: Two hundred twenty-eight bovine incisors were sectioned, resulting in 228 enamel blocks (7 × 4 × 4 mm(3)) that were divided into 12 groups (n = 19) according to the factors "adhesion" after bleaching (immediate adhesion; after 14 days; and a control group with adhesion on unbleached teeth); enamel "abrasion" (with or without abrasion simulating cavity preparation); and "laser" (with or without Er,Cr:YSGG laser irradiation)...
March 16, 2017: Photomedicine and Laser Surgery
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