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Bleaching teeth

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https://www.readbyqxmd.com/read/29679230/dental-bleaching-on-teeth-submitted-to-enamel-microabrasion-30-years-ago-a-case-report-of-patients-compliance-during-bleaching-treatment
#1
Daniel Sundfeld, Caio Cesar Pavani, Timm Cornelius Schott, Lucas Silveira Machado, Núbia Inocêncya Pavesi Pini, André Pinheiro de Magalhães Bertoz, Renato Herman Sundfeld
OBJECTIVES: The present dental bleaching case report describes a new method that precisely quantifies the daily wearing-times of the bleaching product by inserting a microsensor in the acetate custom tray. The bleaching efficacy was also discussed since the patient was previously submitted to enamel microabrasion. METHODS: The patient was submitted to enamel microabrasion in 1987, and bleaching treatment was performed in 2005. In 2017, re-bleaching was executed using 10% peroxide carbamide...
April 20, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29676980/effect-of-bleaching-gel-viscosity-on-tooth-whitening-efficacy-and-pulp-chamber-penetration-an-in-vitro-study
#2
S R Kwon, Fnu Pallavi, Y Shi, U Oyoyo, A Mohraz, Y Li
OBJECTIVES: Whitening efficacy has been related to hydrogen peroxide (HP) diffusion into tooth structure. However, little information is available relating rheological properties to whitening efficacy. The purpose was to evaluate the whitening efficacy and HP penetration level of a 10% HP gel at three different viscosities and to compare them to a strip delivery system. METHODS AND MATERIALS: Extracted molars (n=120) were randomly assigned into five groups (n=24/ group): NC_MED (negative control; median): medium viscosity gel without HP; LOW: 10% HP gel (low viscosity experimental gel, Ultradent Products Inc); MED: 10% HP gel (medium viscosity experimental gel, Ultradent); HIGH: 10% HP gel (high viscosity gel, Ultradent); and CWS: Crest 3D Whitestrips 1-Hour Express (Procter & Gamble)...
May 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29628643/protocols-for-sodium-ascorbate-application-on-intracoronary-dentin-bleached-with-high-concentrated-agent
#3
Thiago Vinicius Cortez, Isabella Rodrigues Ziotti, Renata Siqueira Scatolin, Silmara Aparecida Milori Corona, Aline Evangelista Souza-Gabriel
Purpose: Composite resin restorations are normally replaced after the internal bleaching of endodontically treated-teeth because the bleaching agent does not alter the color of the restorative material. This study evaluated the effect of 10% sodium ascorbate (SA) applied at different protocols on bleached dentin. Materials and Methods: One-hundred slabs of intracoronary bovine dentin were divided into 5 groups: 2 controls-GI without bleaching (positive), GII bleached with 35% hydrogen peroxide (HP) (negative); and 3 experimentals - GIII...
January 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29625696/walking-bleach-technique-for-endodontically-treated-teeth-with-35-hydrogen-peroxide-and-37-carbamide-peroxide-may-result-in-similar-improvements-in-tooth-color-and-patient-satisfaction
#4
https://www.readbyqxmd.com/read/29603692/effect-of-at-home-and-in-office-bleaching-on-marginal-microleakage-in-composite-resin-restorations-using-two-adhesive-systems
#5
Celso A Klein, Douglas da Silva, Eduardo G Reston, Diana Lb Borghetti, Roberto Zimmer
AIM: The aim of this study is to assess marginal microleakage of cervical cavities restored with composite resins and two different adhesive techniques subjected to at-home and in-office bleaching. MATERIALS AND METHODS: In this randomized, blind laboratory experiment, 60 bovine teeth recently extracted were collected and divided into six groups (n = 10 each group). The teeth received cervical cavity preparations (2 mm × 3 mm × 1 mm) with enamel margins. Two different adhesive systems were used (Single Bond 2 and Clearfil SE Bond), in addition to composite resin (Z250)...
March 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29594826/sodium-hypochlorite-penetration-into-dentinal-tubules-after-manual-dynamic-agitation-and-ultrasonic-activation-a-histochemical-evaluation
#6
Luigi Generali, Erica Campolongo, Ugo Consolo, Carlo Bertoldi, Luciano Giardino, Francesco Cavani
The aim of this study was to compare the effects of Manual Dynamic Agitation and Passive Ultrasonic Irrigation on sodium hypochlorite (NaOCl) penetration into dentinal tubules using its bleaching ability. Thirty-four single-rooted teeth with round-shaped root canals were distributed in two homogeneous groups and one control group, characterized by different NaOCl activation systems: Manual Dynamic Agitation and Passive Ultrasonic Irrigation. After instrumentation, all root canals were stained with 10% copper sulphate solution followed by 1% rubeanic acid alcohol solution under vacuum...
March 28, 2018: Odontology
https://www.readbyqxmd.com/read/29570018/preventive-use-of-a-resin-based-desensitizer-containing-glutaraldehyde-on-tooth-sensitivity-caused-by-in-office-bleaching-a-randomized-single-blind-clinical-trial
#7
Acs Diniz, Snl Lima, RRdJ Tavarez, A H Borges, Scs Pinto, M R Tonetto, A D Loguercio, M C Bandéca
OBJECTIVE: To evaluate the risk and intensity of bleaching-induced tooth sensitivity (TS) after in-office bleaching following topical application of a resin-based glutaraldehyde desensitizer. METHODS: Thirty-three patients were randomly assigned to the experimental (Gluma Desensitizer Liquid, Heraeus Kulzer, Hanau, Germany) and placebo groups. The placebo or Gluma Desensitizer Liquid was applied for one minute prior to application of an in-office bleaching gel. Bleaching was performed with 35% hydrogen peroxide gel (three applications × 15 minutes each) over two sessions, one week apart...
March 23, 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29550020/effect-of-topical-application-of-dipyrone-on-dental-sensitivity-reduction-after-in-office-dental-bleaching-a-randomized-triple-blind-multicenter-clinical-trial
#8
Márcia Rezende, Kaprice Chemin, Savil Costa Vaez, Aline Carvalho Peixoto, Jéssica de Freitas Rabelo, Stella Sueli Lourenço Braga, André Luis Faria-E-Silva, Gisele Rodrigues da Silva, Carlos José Soares, Alessandro D Loguercio, Alessandra Reis
BACKGROUND: Tooth sensitivity commonly occurs during and immediately after dental bleaching. The authors conducted a trial to compare tooth sensitivity after in-office bleaching after the use of either a topical dipyrone or placebo gel. METHODS: A split-mouth, triple-blind, randomized, multicenter clinical trial was conducted among 120 healthy adults having teeth that were shade A2 or darker. The facial tooth surfaces of the right or left sides of the maxillary arch of each patient were randomly assigned to receive either topical dipyrone or placebo gel before 2 in-office bleaching sessions (35% hydrogen peroxide) separated by 2 weeks...
March 14, 2018: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29533717/does-the-use-of-a-walking-bleaching-technique-increase-bone-resorption-markers
#9
C Bersezio, P Vildósola, M Sáez, F Sánchez, R Vernal, O B Oliveira, G Jorquera, J Basualdo, A Loguercio, E Fernández
OBJECTIVE: This randomized clinical trial evaluated the effect of 35% hydrogen peroxide in comparison with 37% carbamide peroxide in a nonvital bleaching technique of "walking bleaching" (four sessions of treatment) on periodontal markers: nuclear factor kappa B-ligand (RANK-L-process of root resorption marker) and interleukin 1β (IL-1β-inflammatory response marker). METHODS AND MATERIALS: Fifty volunteers presenting with discoloration of nonvital teeth and endodontic treatment in good condition participated...
May 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29522885/effects-of-in-office-bleaching-on-human-enamel-and-dentin-morphological-and-mineral-changes
#10
Carmen Llena, Irene Esteve, Leopoldo Forner
BACKGROUND: The effects of HP-based products upon dental enamel and dentin are inconclusive. AIM: To evaluate changes in micromorphology and composition of calcium (Ca) and phosphate (P) in enamel and dentin after the application of 37.5% hydrogen peroxide (HP) and 35% carbamide peroxide (CP) METHODS: Crowns of 20 human teeth were divided in two halves. One half was used as control specimen and the other as experimental specimen. The control specimens were kept in artificial saliva, and the experimental specimens were divided into four groups (n=5 each): group 1 (enamel HP for 45min); group 2 (dentin HP for 45min); group 3 (enamel CP for 90min); and group 4 (dentin CP for 90min)...
May 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29520944/novel-treatment-of-in-office-tooth-bleaching-sensitivity-a-randomized-placebo-controlled-clinical-study
#11
Deepak Mehta, S Jyothi, Prashant Moogi, Werner J Finger, Keiichi Sasaki
OBJECTIVES: Aim of this clinical trial was to investigate the effect of a calcium phosphate based desensitizer paste applied prior to in-office tooth whitening on bleaching sensitivity (BS). METHODS: This crossover study was designed as randomized double-blinded, placebo-controlled trial. The desensitizer paste Teethmate AP (TAP) contains tetracalcium phosphate and dicalcium phosphate anhydrous in glycerol and polyethylene glycol, whereas placebo (PLA) is a calcium phosphate free analog...
March 9, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29485695/a-colorimetric-evaluation-of-the-effect-of-bacterial-contamination-on-teeth-stained-with-blood-in-vitro-evaluation-of-the-efficacy-of-two-different-bleaching-regimes
#12
Suzy Wang, Peter Cathro, Geoffrey Heithersay, Nancy Briggs, Jithendra Ratnayake, Peter Zilm
BACKGROUND: Tooth discolouration could occur due to bacterial contamination in traumatised teeth. Hydrogen peroxide is the commonly used bleaching agent. However, due to concerns over safety, alternative-bleaching regimes such as sodium perborate (S) and thiourea-hydrogen peroxide (T) have been investigated. METHODOLOGY: Apices resected and pulp extirpated 99 premolars were divided into two groups. Group 1 and 2 was injected with blood and blood/bacteria, stored anaerobically for 35 days...
February 27, 2018: Australian Dental Journal
https://www.readbyqxmd.com/read/29468599/determination-of-nicotine-content-in-teeth-submitted-to-prophylaxis-and-in-office-bleaching-by-gas-chromatography-mass-spectrometry-gc-ms
#13
Juliana L de Geus, Flávio L Beltrame, Mei Wang, Bharathi Avula, Ikhlas A Khan, Alessandro D Loguercio, Stella Kossatz, Alessandra Reis
OBJECTIVES: The objective of this study was to evaluate the dental color exposed to acute cigarette smoke treatment and quantify the amount of nicotine in samples exposed to cigarette smoke, after dental prophylaxis and after in-office bleaching. MATERIALS AND METHODS: Sixty-nine healthy human molars were subjected to cigarette smoke in a cigarette machine. The teeth were divided into three groups: positive control, prophylaxis, and bleaching. Forty cycles of smoke exposition with duration of 15 min each were performed using 10 cigarettes (positive control)...
February 21, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29455372/effectiveness-and-effect-of-non-vital-bleaching-on-the-quality-of-life-of-patients-up-to-6-months-post-treatment-a-randomized-clinical-trial
#14
Cristian Bersezio, Paulina Ledezma, Carla Mayer, Oriana Rivera, Osmir Batista Oliveira Junior, Eduardo Fernández
OBJECTIVES: The aim of this study was to evaluate the esthetic perception of patients at 6 months after bleaching of non-vital teeth with 35% of hydrogen peroxide and 37% of carbamide peroxide using a walking bleach technique. We also assessed psychosocial impacts as well as the clinical effectiveness and stability of the color change. MATERIALS AND METHODS: The teeth bleaching treatment was randomly assigned to two groups according to the bleaching agent used: G1 HP = 35% of hydrogen peroxide (n = 25) and G2 CP = 37% of carbamide peroxide (n = 25)...
February 17, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29439773/effect-of-an-experimental-desensitizing-agent-on-reduction-of-bleaching-induced-tooth-sensitivity-a-triple-blind-randomized-clinical-trial
#15
Sibelli Olivieri Parreiras, Anna Luiza Szesz, Fabiana Madalozzo Coppla, Eveline Claudia Martini, Paulo Vitor Farago, Alessandro D Loguercio, Alessandra Reis
BACKGROUND: In this randomized study, split-mouth, triple-blind clinical trial, the authors evaluated the efficacy of a desensitizing gel that contained 5% potassium nitrate and 5% glutaraldehyde applied before in-office bleaching with 35% hydrogen peroxide (HP). METHODS: Treatment with the desensitizing or placebo control gels was randomly assigned to one-half of the maxillary teeth of 42 patients in a split-mouth design. The desensitizing gels were applied and maintained in contact with the tooth enamel for 10 minutes, followed by 2 HP bleaching sessions separated by 1 week...
April 2018: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29410753/the-effects-of-fractional-co2-laser-nano-hydroxyapatite-and-mi-paste-on-mechanical-properties-of-bovine-enamel-after-bleaching
#16
Horieh Moosavi, Narjes Hakimi
Background: This study investigated the effect of post bleaching treatments to the change of enamel elastic modulus and microhardness after dental bleaching in- vitro. Material and Methods: Fifty bovine incisor slab were randomly assigned into five groups (n=10). The samples were bleached for three times; 20 minutes each time, by 40% hydrogen peroxide. Next it was applied fractional CO2 laser for two minutes, Nano- hydroxy apatite (N-HA) and MI-paste for 7 days and 2 minutes per day...
December 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29402954/randomized-controlled-clinical-trial-on-bleaching-sensitivity-and-whitening-efficacy-of-hydrogen-peroxide-versus-combinations-of-hydrogen-peroxide-and-ozone
#17
Mahmoud K Al-Omiri, Abdullah A Al Nazeh, Andrej M Kielbassa, Edward Lynch
The clinical efficacy regarding bleaching sensitivity and tooth shade lightening using a standard hydrogen peroxide (H2O2) bleaching gel was compared with the additional use of ozone either before or after application of H2O2. Using computer-generated tables, 45 participants were randomly allocated into three groups (n = 15 each) in this investigator-driven, single-centre trial. In Group 1, upper anterior teeth were bleached using ozone (produced via a healOzone X4 device) for 60 seconds, then 38% H2O2 for 20 minutes; in Group 2, 38% H2O2 application (20 min) was followed by ozone (60 s); air produced by the healOzone machine (60 s) followed by 38% H2O2 (20 min) was used in Group 3 (control)...
February 5, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29399313/effects-of-erbium-family-laser-on-shear-bond-strength-of-composite-to-dentin-after-internal-bleaching
#18
Nazanin Kiomarsi, Yasaman Arjmand, Mohammad Javad Kharrazi Fard, Nasim Chiniforush
Introduction: The aim of this study was to assess the effect of surface treatment with erbium: yttrium-aluminum-garnet (Er:YAG) and erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) lasers on shear bond strength of composite resin to recently bleached dentin. Methods: In this study, 40 extracted human premolars were selected. The teeth were cut 4 mm apical to the cusp tip and were randomly divided into four groups (n=10 in each group) for shear bond strength testing. For bleaching, 35% hydrogen peroxide (H2 o2 ) gel (Opalescence Endo, Ultradent, South Jordan, UT, USA) was applied to dentin surfaces of all specimens for 10 days...
2018: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29399308/comparison-of-tooth-color-change-after-bleaching-with-conventional-and-different-light-activated-methods
#19
Sima Shahabi, Hadi Assadian, Alireza Mahmoudi Nahavandi, Hanieh Nokhbatolfoghahaei
Introduction: The demand for esthetic dental treatments is increasing in recent years mainly due to improved oral hygiene and better maintenance of oral health and teeth in older individuals. Bleaching of discolored anterior teeth is the most popular among esthetic dental treatments. Even individuals with sound teeth and adequate esthetics seek to have whiter teeth in the anterior region. The aim of this study was to evaluate tooth color changes following conventional in-office bleaching techniques compared to light-activated methods using different light sources...
2018: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29386788/a-novel-technique-of-sculpting-biodentine-in-the-restoration-of-iatrogenic-dentin-loss
#20
Mayuri Mohan Naik, Ida de Noronha de Ataide, Marina Fernandes, Rajan Lambor
Excessive tooth structure loss is a common iatrogenic error encountered during endodontic practice. Conservative treatment planning is essential to maintain the structural integrity in such teeth. This case report elucidates a novel approach in sculpting Biodentine as a dentin substitute followed by internal bleaching and restoration with fiber-reinforced composite.
September 2017: Journal of Conservative Dentistry: JCD
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