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Whitening teeth

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
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
E Arat Maden, C Altun, G Guven Polat, F Basak
Aim: The aim of this study was to evaluate the effect of fluoride, Xylitol, Probiotic, and Whitening toothpastes on the permanent teeth enamel roughness and microhardness. Materials and Methods: One hundred and twenty teeth were randomly divided into 2 groups, each group having 60 samples. G1: The group in which enamel roughness was examined (n = 60). G2: The group in which enamel microhardness was examined (n = 60). Then, these groups were randomly divided into 4 groups among themselves (n = 15)...
March 2018: Nigerian Journal of Clinical Practice
Flàvia Pardo Salata Nahsan, Maria Janete Oliveira Reis, Luciana Fàvaro Francisconi-Dos-Rios, Luciana Vasconcelos Leão, Luiz Renato Paranhos
Products for tooth whitening (or tooth color maintenance) that improve smile esthetics have become increasingly popular due to their easy accessibility and low cost. This in vitro study assessed the effect of whitening mouthwash on bovine tooth color. Forty-eight bovine teeth were divided into 3 immersion groups: SL, artificial saliva (control); CLW, Colgate Luminous White; and OBW, Oral-B 3D White. After prophylaxis with pumice, the initial color was measured using the CIE L*a*b* system. Teeth were immersed in the solutions for 2 minutes, 3 times per day, for 30 days...
March 2018: General Dentistry
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...
February 10, 2018: Journal of the American Dental Association
Vlatka Lajnert, Daniela Kovacevic Pavicic, Andrej Pavlic, Alessandra Pokrajac-Bulian, Stjepan Spalj
OBJECTIVE: To create and validate a brief questionnaire designed for the assessment of satisfaction with smile aesthetics and to test its efficiency as a patient-centred outcome measure of aesthetic interventions in dentistry. MATERIALS AND METHODS: A team of three specialists - two from prosthodontics and one psychologist - used a self-evaluation scale consisting of five elements in order to rate self-perceived smile aesthetics. A total of 671 subjects (63% female), 18-86 years of age, were included in the investigation...
February 7, 2018: International Dental Journal
Eduardo Moreira da Silva, Juliana Nunes da Silva Meirelles Dória Maia, Carine Gnatiuk Mitraud, Juliana do Espírito Santo Russo, Laiza Tatiana Poskus, José Guilherme Antunes Guimarães
Besides the effects on the health of individuals, cigarette smoking can also interfere with the appearance of their teeth. To evaluate the effect of cigarette smoking-toothbrushing-cycling (CSTC) with whitening toothpastes on the roughness and optical behavior of bovine enamel for eight weeks. Thirty bovine dentin/enamel discs, 8.0 mm in diameter and 2.0 mm thick, were randomly divided into three groups according to the toothpastes: whitening (Colgate Luminous White - CW and Oral B 3D White - OW), and a non-whitening (Colgate - C)...
February 1, 2018: Journal of Applied Oral Science: Revista FOB
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
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
AmirHossein Mirhashemi, Sahar Jahangiri, MohammadJavad Kharrazifard
BACKGROUND: Corrosion resistance is an important requirement for orthodontic appliances. Nickel and chromium may be released from orthodontic wires and can cause allergic reactions and cytotoxicity when patients use various mouthwashes to whiten their teeth. Our study aimed to assess the release of nickel and chromium ions from nickel titanium (NiTi) and stainless steel (SS) orthodontic wires following the use of four common mouthwashes available on the market. METHODS: This in vitro, experimental study was conducted on 120 orthodontic appliances for one maxillary quadrant including five brackets, one band and half of the required length of SS, and NiTi wires...
February 5, 2018: Progress in Orthodontics
Tahereh Hosseinzadeh Nik, Tabassom Hooshmand, Homa Farhadifard
Objectives: The purpose of this study was to investigate the effect of different types of toothpaste on the frictional resistance between stainless steel brackets and archwires. Materials and Methods: Ninety stainless steel orthodontic brackets with stainless steel wires were bonded to bovine teeth and were divided into 6 groups for application of the following toothpastes: Colgate® Total® Advanced Whitening, Colgate® Total® Pro Gum Health, Colgate® Anticavity, Ortho...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
Vania Bergesch, Flávio Henrique Baggio Aguiar, Cecilia Pedroso Turssi, Fabiana Mantovani Gomes França, Roberta Tarkany Basting, Flávia Lucisano Botelho Amaral
Objective: This study evaluated the effectiveness of toothbrushing with whitening toothpaste in altering the shade of stained human enamel. Materials and Methods: Thirty fragments of human enamel, stained with chlorhexidine/black tea underwent 1000 and 5000 brushing cycles (BC) with (n = 10): PLS (Gel Dental Day, Bitufo), Close Up White Now, Unilever (COVB) and regular (Gel Dental Night, Bitufo) toothpaste. Images were taken before staining (baseline), after staining (STN) and following 1000 and 5000 BC and were analyzed using the CIELAB parameters (ΔE, Δb and ΔL)...
October 2017: European Journal of Dentistry
Danying Tao, Richard N Smith, Qiong Zhang, Jianing N Sun, Carole J Philpotts, Stephen R Ricketts, Mojgan Naeeni, Andrew Joiner
OBJECTIVES: To measure the tooth whitening effects delivered immediately after brushing with silica-based toothpastes containing blue covarine in vitro and in vivo. METHODS: Salivary pellicle coated human extracted teeth were brushed with either a slurry of a toothpaste containing blue covarine (BC), a formulation containing an increased level of blue covarine (BC+) or a negative control toothpaste containing no blue covarine. The colour of the specimens were measured in vitro using either a Minolta chromameter or a VITA Easyshade spectrophotometer, before and after brushing and changes in CIELAB values and tooth Whiteness Index (WIO) values calculated...
December 2017: Journal of Dentistry
Stephen Westland, Wen Luo, Yuan Li, Qianqian Pan, Andrew Joiner
OBJECTIVE: To investigate the tooth whiteness perceptibility thresholds of the average observer to changes in the CIELAB values and an optimised whiteness Index for dentistry (WIO) based on psychophysical studies. METHODS: A psychophysical experiment based on visual assessments of digital images of teeth on a calibrated display with a group of observers (n=32) has been conducted to determine the perceptual thresholds in tooth whiteness. Digital simulations of a tooth that is identical in shape to the left incisor in the image of teeth were superimposed on to images...
December 2017: Journal of Dentistry
Sarah Young, Stephen Mason, Jeffery L Milleman, Kimberly R Milleman
PURPOSE: To investigate the stain-removal efficacy of an experimental ultra-low abrasivity anti-sensitivity dentifrice containing sodium tripolyphosphate (STP) and a cocamidopropyl betaine/sodium methyl cocoyl taurate detergent system. METHODS: This was a single-center, examiner-blind, randomized, parallel-group study. Extrinsic dental stain was assessed on the facial surfaces of the six maxillary and six mandibular anterior teeth and the lingual surfaces of the six mandibular anterior teeth using the Macpherson modification of the Lobene Stain Index (MLSI)...
October 2017: American Journal of Dentistry
Siobhán Mary McMorrow, Declan T Millett
OBJECTIVES: To report the opinions of specialist orthodontists regarding the profile, characteristics and treatment of adults currently undergoing orthodontic treatment in the Republic of Ireland (ROI) Design/setting: A national cross-sectional questionnaire study in the ROI. METHOD: A pilot-tested questionnaire was distributed to 122 specialist orthodontists in the ROI. Questions addressed general and treatment information for current adult orthodontic patients...
December 2017: Journal of Orthodontics
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
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
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
Mohammad Asnaashari, Hengameh Ashraf, Amir Houshang Daghayeghi, Seyed Masoud Mojahedi, Saranaz Azari-Marhabi
Introduction: Pharmacotherapy with analgesics and non-steroidal anti-inflammatory drugs has been traditionally used to relief post-operative pain of endodontic treatments. However, due to the side effects reported for these drugs, some efforts have been made to decrease the post-operative pain of the endodontic treatments through laser irradiation. The present study aimed to evaluate the effects of low level laser therapy (LLLT) on the reduction of pain after root canal retreatment. Methods: In this clinical trial, 61 patients requiring endodontic retreatments in posterior teeth were selected...
2017: Journal of Lasers in Medical Sciences
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