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Tooth whitening

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https://www.readbyqxmd.com/read/29304422/bleaching-and-enamel-surface-interactions-resulting-from-the-use-of-highly-concentrated-bleaching-gels
#1
Guillermo Grazioli, Lisia Lorea Valente, Cristina Pereira Isolan, Helena Alves Pinheiro, Camila Gonçalves Duarte, Eliseu Aldrighi Münchow
Tooth bleaching is considered a non-invasive treatment, although the use of highly-concentrated products may provoke increased surface roughness and enamel demineralization, as well as postoperative sensitivity. Thus, the aim of this study was to investigate whether hydrogen peroxide (H2O2) concentration would affect tooth bleaching effectiveness and the enamel surface properties. Enamel/dentin bovine specimens (6 × 4 mm) were immersed in coffee solution for 7 days and evaluated with a spectrophotometer (Easyshade; baseline), using the CIEL*a*b* color parameters...
December 28, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29289725/in-office-dental-bleaching-with-light-vs-without-light-a-systematic-review-and-meta-analysis
#2
REVIEW
Bianca Medeiros Maran, Adrieli Burey, Thalita de Paris Matos, Alessandro D Loguercio, Alessandra Reis
OBJECTIVE: A systematic review and meta-analysis were performed to answer the following research question: Does light-activated in-office vital bleaching have a greater whitening efficacy and higher tooth sensitivity (TS) in comparison with in-office vital bleaching without light when used in adults? DATA AND SOURCE: Only randomized clinical trials (RCTs) involving adults who had in-office bleaching with and without light activation were included. Controlled vocabulary and keywords were used in a comprehensive search for titles and abstracts in PubMed, and this search was adapted for Scopus, Web of Science, LILACS, BBO, EMBASE, Cochrane Library, and SIGLE without restrictions in May 2016 and was updated in August 2017...
December 28, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29285853/development-and-validation-of-a-new-condition-specific-instrument-for-evaluation-of-smile-esthetics-related-quality-of-life
#3
Ema Saltovic, Vlatka Lajnert, Sabina Saltovic, Daniela Kovacevic Pavicic, Andrej Pavlic, Stjepan Spalj
OBJECTIVE: Orofacial esthetics raises psychosocial issues. The purpose was to create and validate new short instrument for psychosocial impacts of altered smile esthetics. MATERIALS AND METHODS: A team of an orthodontist, two prosthodontists, psychologist, and a dental student generated items that could draw up specific hypothetical psychosocial dimensions (69 items initially, 39 in final analysis). The sample consisted of 261 Caucasian subjects attending local high schools and university (26% male) aged 14 to 28 years that have self-administrated the designed questionnaire...
December 29, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29251453/an-induced-extrinsic-tooth-stain-prevention-model-to-investigate-whitening-potential-of-sugar-free-chewing-gums
#4
Michael Wj Dodds, Minmin Tian, Lilian Ramirez, Jeffery L Milleman, Kimberly R Milleman, Howard M Proskin
PURPOSE: To establish an accelerated clinical test method to evaluate the effectiveness of sugar-free gums in prevention of the formation of extrinsic stains when chewed over a 2-week period in conjunction with daily tooth brushing. A secondary objective was to compare three methods for measuring extrinsic stain. METHODS: 25 healthy adult volunteers were enrolled in a single center, examiner blind, randomized 4-way crossover clinical study. Starting with a stain-free baseline, subjects rinsed five times daily with freshly brewed black tea, followed either by chewing one of three different gums for 12 minutes or not chewing (negative control)...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29233260/tooth-whitening-evaluation-of-blue-covarine-containing-toothpastes
#5
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
https://www.readbyqxmd.com/read/29233258/investigation-of-the-perceptual-thresholds-of-tooth-whiteness
#6
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
https://www.readbyqxmd.com/read/29226023/evaluating-the-whitening-and-microstructural-effects-of-a-novel-whitening-strip-on-porcelain-and-composite-dental-materials
#7
Thair Takesh, Anik Sargsyan, Matthew Lee, Afarin Anbarani, Jessica Ho, Petra Wilder-Smith
Aims: The aim of this project was to evaluate the effects of 2 different whitening strips on color, microstructure and roughness of tea stained porcelain and composite surfaces. Methods: 54 porcelain and 72 composite chips served as samples for timed application of over-the-counter (OTC) test or control dental whitening strips. Chips were divided randomly into three groups of 18 porcelain and 24 composite chips each. Of these groups, 1 porcelain and 1 composite set served as controls...
August 2017: Dentistry: Current Research
https://www.readbyqxmd.com/read/29178759/the-abrasive-effect-of-commercial-whitening-toothpastes-on-eroded-enamel
#8
Victor Mosquim, Beatriz Martines Souza, Gerson Aparecido Foratori Junior, Linda Wang, Ana Carolina Magalhães
PURPOSE: To evaluate the in vitro abrasive effect of commercial whitening toothpastes on eroded bovine enamel samples in respect to erosive tooth wear. METHODS: 72 bovine crowns were embedded, polished and subjected to the baseline profile analysis. The samples were then protected in 2/3 of the enamel surface and were randomly assigned to six groups (n= 12/group): G1: Oral-B 3D White, G2: Close-up Diamond Attraction Power White, G3: Sorriso Xtreme White 4D, G4: Colgate Luminous White, G5: Crest (conventional toothpaste), G6:erosion only (control)...
June 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29172313/frequently-asked-questions-about-vital-tooth-whitening
#9
Emilie Mchantaf, Hicham Mansour, Joseph Sabbagh, Mireille Feghali, Robbie J McConnell
Improving patients’ aesthetics is an important request in daily practice. Tooth whitening is a treatment option available for improving aesthetics. This paper will pose questions asked by our patients on bleaching techniques and outcomes and offer appropriate up-to-date answers. Clinical relevance: This paper addresses the most important questions raised by patients and colleagues concerning vital tooth whitening (VTW).
January 2017: Dental Update
https://www.readbyqxmd.com/read/29169307/adult-orthodontics-in-the-republic-of-ireland-specialist-orthodontists-opinions
#10
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...
November 24, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/29159178/zinc-containing-hydroxyapatite-enhances-cold-light-activated-tooth-bleaching-treatment-in-vitro
#11
Yi Li, Xinchang Shi, Wei Li
Cold-light bleaching treatment has grown to be a popular tooth whitening procedure in recent years, but its side effect of dental enamel demineralization is a widespread problem. The aim of this study was to synthesize zinc-substituted hydroxyapatite as an effective biomaterial to inhibit demineralization or increase remineralization. We synthesized zinc-substituted hydroxyapatite containing different zinc concentrations and analysed the product using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and energy dispersive spectrometer (EDS)...
2017: BioMed Research International
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
#12
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
#13
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
#14
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/29123632/management-of-post-endodontic-retreatment-pain-with-low-level-laser-therapy
#15
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
https://www.readbyqxmd.com/read/29123306/book-review-tooth-whitening-an-evidence-based-perspective
#16
G Fenton
No abstract text is available yet for this article.
November 10, 2017: British Dental Journal
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
#17
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/29056186/stain-removal-and-whitening-by-baking-soda-dentifrice-a-review-of-literature
#18
Yiming Li
BACKGROUND: Tooth discoloration may be caused by intrinsic or extrinsic stains or a combination of both. There are 2 major approaches to removing the stains, including the chemical mechanism using peroxides for tooth bleaching and the mechanical mechanism using abrasives in prophylactic pastes and dentifrices to remove stains, resulting in a whitening effect. Attempts have also been made to add a low concentration of peroxides to dentifrices to enhance their abrasive cleaning to remove tooth stains...
November 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29036235/-medicaments-and-oral-healthcare-5-adverse-effects-of-medications-and-over-the-counter-drugs-on-teeth
#19
C de Baat, P G M A Zweers, C van Loveren, A Vissink
Intrinsic tooth discoloration may occur as an adverse effect of fluoride and tetracyclines. Extrinsic tooth discoloration may occur as superficial staining or as discoloration of the superficial pellicle and/or biofilm due to chlorhexidine, liquid iron salts, essential oils, some antibiotics and stannous fluoride. Inhibition of orthodontic tooth movement has been reported due to the use of prostaglandin synthetase inhibitors. If medications or over-the-counter drugs induce hyposalivation or contain much sucrose, caries may develop...
October 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/28928097/tooth-colour-and-whiteness-a-review
#20
Andrew Joiner, Wen Luo
OBJECTIVES: To review current knowledge concerning the application of colour science on tooth colour and whiteness description, measurement, distribution and its psychological impact. DATA SOURCES: "Scopus" databases were searched electronically with the principal keywords tooth, teeth, colour, white, whiteness. Language was restricted to English and original studies and reviews were included. Conference papers and abstracts were excluded. CONCLUSIONS: The appearance and colour of teeth is a common concern for patients across many populations and is associated with an increased desire for treatments that improve dental aesthetics, including tooth whitening...
September 16, 2017: Journal of Dentistry
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