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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
#1
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
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
#2
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
#3
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
#4
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
#5
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
#6
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
https://www.readbyqxmd.com/read/29386782/effect-of-vital-bleaching-with-solutions-containing-different-concentrations-of-hydrogen-peroxide-and-pineapple-extract-as-an-additive-on-human-enamel-using-reflectance-spectrophotometer-an-in-vitro-study
#7
Chitra Janardhanan Vejai Vekaash, Tripuravaram Vinay Kumar Reddy, Kondas Vijay Venkatesh
Aim: This study aims to evaluate the color change in human enamel bleached with three different concentrations of hydrogen peroxide, containing pineapple extract as an additive in two different timings, using reflectance spectrophotometer. Background: The study aimed to investigate the bleaching efficacy on natural teeth using natural enzymes. Materials and Methods: Baseline color values of 10 randomly selected artificially stained incisors were obtained...
September 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29364338/influence-of-skin-cold-sensation-threshold-in-the-occurrence-of-dental-sensitivity-during-dental-bleaching-a-placebo-controlled-clinical-trial
#8
Vanessa Rahal, Marjorie de Oliveira Gallinari, Juliana Stuginski Barbosa, Reynaldo Leite Martins-Junior, Paulo Henrique Dos Santos, Luciano Tavares Angelo Cintra, André Luiz Fraga Briso
This study verified the occurrence of dental sensitivity in patients submitted to a 35% hydrogen peroxide based product (Whiteness HP Maxx 35% - FGM), skin cold sensation threshold (SCST) and its influence on dental sensitivity. Sixty volunteers were divided into 4 groups (n = 15), according to SCST (low: GI and GIII, and high: GII and IV) and bleaching treatment (hydrogen peroxide: GI and GII, and placebo: GIII and GIV). SCST was determined in the inner forearm for 6 different times using a neurosensory analyzer, the TSA II (Medoc Advanced Medical Systems, Ramat Yishai, Northern District, Israel)...
January 18, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29326505/influence-of-intracanal-irrigants-on-coronal-fracture-resistance-of-endodontically-treated-and-bleached-teeth-an-in-vitro-study
#9
Maryam Khoroushi, Fatemeh Tavakol, Farinaz Shirban, Sanaz Ziaei
Background: Irrigation has a key role in the success of endodontic treatment. Intracanal irrigant solutions have adverse effects on the physical properties of dentin. Aim: The present study aimed to evaluate the effect of different irrigation protocols on coronal fracture resistance of endodontically treated teeth undergoing bleaching treatment. Design and Materials and Methods: Access cavities were prepared in 120 maxillary premolars which were divided into two groups (n = 60) - Group A: nonbleached, Group B: bleached (B)...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29303753/the-effect-of-home-bleaching-carbamide-peroxide-concentration-on-the-microhardness-of-dental-composite-resins
#10
Behnaz Esmaeili, Faezeh Abolghasemzadeh, Atefeh Gholampor, Ghazaleh Daryakenari
Bleaching is a conservative treatment for discolored teeth, but the effect of this treatment on newer, silorane-based composite resins is unclear. This study evaluated the effect of at-home bleaching on the microhardness of methacrylate- and silorane-based composites. Forty blocks each of a methacrylate-based composite and a silorane-based composite were prepared. The 80 specimens were tested in 8 groups (n = 10): 2 composites, each exposed to 3 different carbamide peroxide concentrations (10%, 16%, or 22%) as well as distilled water (control)...
January 2018: General Dentistry
https://www.readbyqxmd.com/read/29289946/different-applicabilities-of-the-etch-bleach-seal-technique-for-treating-opacities-on-permanent-incisor-damage-by-molar-incisor-hypomineralisation-in-three-young-patients
#11
Tony Prud'homme, Isabelle Hyon, Sylvie Dajean Trutaud, Serena Lopez Cazaux
Enamel opacity on anterior teeth can be prejudicial for the aesthetic appearance of affected patients. Patients with molar incisor hypomineralisation, for example, present opacities that can range from discrete white mottling to extensive yellow-brown discolourations. They can request a treatment to improve their aesthetic conditions. Many techniques have been considered to manage this condition. Wright developed a technique called etch-bleach-seal, which showed promising results for the management of anterior enamel opacities...
December 29, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29260760/-gender-related-preferences-in-the-choice-of-methods-for-aesthetic-and-functional-rehabilitation-in-dentistry
#12
E G Margaryan, Yu O Paramonov
The aim of the study was to assess gender-related preferences in the choice of oral rehabilitation methods. The study involved 225 patients aged 16-75. The analysis included patients survey and the assessment of actual procedures received during one year follow-up. The study revealed women to be more attentive to oral health issues resulting in more regular appointments and better compliance. Dental treatment before planned pregnancy was, however, completed in only half of the patients. When choosing materials and constructions for oral rehabilitation the leading criteria for men were 'quality' and 'safety', while women chose 'esthetics' and 'quality'...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/29215687/impact-of-microabrasion-on-the-effectiveness-of-tooth-bleaching
#13
Camila Evelyn Perete-de-Freitas, Paula Damasceno Silva, André Luis Faria-E-Silva
The aim of the present study was to evaluate the effect of prior microabrasion on the teeth color change and tooth bleaching effectiveness. Eight sound molars were mesio-distally sectioned and the halves were randomly allocated to receive enamel microabrasion or non-abrasion (control) in one of surfaces (buccal or lingual), while the remaining surface received the other treatment. The tooth color on baseline was evaluated by spectrophotometer (CieL*a*b system). After the microabrasion procedure, the tooth color was measured again...
September 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29211128/in-office-tooth-bleaching-for-adolescents-using-hydrogen-peroxide-based-gels-clinical-trial
#14
Marcela Leticia Leal Gonçalves, Antonio Carlos da Silva Tavares, Ana Carolina Costa da Mota, Luiz Alberto Plácido Penna, Alessandro Melo Deana, Sandra Kalil Bussadori
The aim of the present study was to evaluate colorimetric changes and tooth sensitivity in adolescents and young patients submitted to tooth bleaching with 20% and 35% hydrogen peroxide. A randomized, controlled, clinical trial was conducted with 53 patients aged 11 to 24 years who were allocated to groups based on the use of the following commercial products: Whiteness HP - FGM® (35% hydrogen peroxide); Whiteness HP Blue Calcium - FGM® (35% hydrogen peroxide); and Whiteness HP Blue Calcium - FGM® (20% hydrogen peroxide)...
November 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29208795/in-vitro-assessment-of-influence-of-various-bleaching-protocols-on-the-strength-of-ceramic-orthodontic-brackets-bonded-to-bleached-tooth-surface-a-comparative-study
#15
Divya Iska, Raghu Devanna, Madhvi Singh, Rajkiran Chitumalla, Sai C Bala Balasubramanian, Manish Goutam
INTRODUCTION: Esthetics is one of the common issues because of which patients consult dental orthodontic treatment. Two ways of tooth bleaching are available these days, which includes in-office bleach and home bleach. Various bleaching protocols are available these days for treating the tooth surfaces. Hence, we planned the present study for investigating the impact of various intracoronal bleaching protocols on shear bond strength of ceramic brackets bonded to tooth surface after bleaching...
December 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29151458/comparison-of-efficacy-and-outcome-satisfaction-between-in-office-and-home-teeth-bleaching-in-chinese-patients
#16
Jie Nie, Fu-Cong Tian, Zu-Hua Wang, Adrian U Yap, Xiao-Yan Wang
This in vivo study aimed to evaluate the efficacy of in-office and home teeth bleaching in Asian patients. Moreover, the correlation between tooth color change and patient's outcome satisfaction was investigated. Overall, 40 Chinese patients were randomly divided into two groups and prescribed in-office (OB) or take-home bleaching (HB). The color of the maxillary central incisor and canine were recorded at baseline, immediately after first treatment, 1 week, and 3 months after treatment by using a spectrophotometer...
November 17, 2017: Journal of Oral Science
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
#17
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
#18
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
#19
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/29109320/effects-of-the-ratio-between-pigment-and-bleaching-gel-on-the-fracture-resistance-and-dentin-microhardness-of-endodontically-treated-teeth
#20
Marina Og Galloza, Keren Cf Jordão-Basso, Matheus C Bandeca, Samuel O Costa, Alvaro H Borges, Mateus R Tonetto, Fabio C Tirintan, Kátia C Keine, Milton C Kuga
INTRODUCTION: The aim of this study was to evaluate the effects of bleaching gel using 35% hydrogen peroxide (HP), associated with red carmine pigment (RC), in the 3:1 or 1:1 ratio, on fracture resistance and dentin microhardness of endodontically treated teeth. MATERIALS AND METHODS: A total of 40 lower incisors were endodontically treated and divided into four groups (n = 10), according to the bleaching protocol: G1 (HP3), 35% HP + RC (3:1); G2 (HP1), 35% HP + RC (1:1); G3 (positive), 38% HP; and G4 (negative), unbleached...
November 1, 2017: Journal of Contemporary Dental Practice
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