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Journal of Dentistry

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https://www.readbyqxmd.com/read/28928097/tooth-colour-and-whiteness-a-review
#1
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
https://www.readbyqxmd.com/read/28918101/silver-diamine-fluoride-remineralized-artificial-incipient-caries-in-permanent-teeth-after-bacterial-ph-cycling-in-vitro
#2
Kulnipa Punyanirun, Thanida Yospiboonwong, Thansinee Kunapinun, Panida Thanyasrisung, Chutima Trairatvorakul
OBJECTIVES: To investigate the remineralizing effect of 38% silver diamine fluoride (SDF) application on enamel artificial caries in adjunct to 1000ppm fluoride toothpaste compared with fluoride toothpaste alone by analyzing the mineral density, depth of remineralization, and remineralization percentage of the lesions. METHODS: Eighteen artificial caries slabs were created from the proximal surfaces of nine chemically demineralized premolars. The slabs were scanned by Micro-Computed Tomography (Micro-CT) to determine the baseline mineral density of the initial lesions and randomly allocated into 2 groups...
September 13, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28916163/effects-of-small-grit-grinding-and-glazing-on-mechanical-behaviors-and-ageing-resistance-of-a-super-translucent-dental-zirconia
#3
Xuan Lai, Wenjie Si, Danyu Jiang, Ting Sun, Longquan Shao, Bin Deng
OBJECTIVES: The purpose of this study is to elucidate the effects of small-grit grinding on the mechanical behaviors and ageing resistance of a super-translucent dental zirconia and to investigate the necessity of glazing for the small-grit ground zirconia. METHODS: Small-grit grinding was performed using two kinds of silicon carbide abrasive papers. The control group received no grinding. The unground surfaces and the ground surfaces were glazed by an experienced dental technician...
September 12, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28916162/fluoride-concentration-and-amount-of-dentifrice-influence-enamel-demineralization-in-situ
#4
M F Paiva, A C B Delbem, M Danelona, M E Nagata, F R N Moraes, G E G Coclete, R F Cunha, M A R Buzalaf, J P Pessan
OBJECTIVES: This study evaluated the effect of conventional (CD, 1100ppm F) and low-fluoride (LFD, 550ppm F) dentifrices, applied in different quantities, on enamel demineralization, and on fluoride (F) concentrations in the dental biofilm formed in situ. METHODS: Five combinations of dentifrices and quantities were tested: placebo (P-F-free) applied on all brush bristles; LFD applied by the transversal technique (0.3g-T1) or on all bristles (0.6g-T2); and CD applied in a pea-sized amount (0...
September 12, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28893627/guest-editorial
#5
EDITORIAL
Nicola X West
No abstract text is available yet for this article.
September 8, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28886983/organic-degradation-potential-of-a-tio2-h2o2-uv-vis-system-for-dental-applications
#6
Oscar Janson, Erik Unosson, Maria Strømme, Håkan Engqvist, Ken Welch
OBJECTIVES: The combination of TiO2 and H2O2 under light activation constitutes a promising method for disinfection of dental prosthetics and implants, due to production of reactive oxygen species (ROS). The aim of this work was to investigate the organic degradation ability of TiO2 particles in combination with H2O2 and under light activation utilizing the organic dye rhodamine B (RhB). METHODS: Five different types of TiO2 particles, consisting of anatase, rutile, or a mixture of these crystalline phases, were combined with H2O2 and RhB, and subsequently exposed to UV (365nm) or visible (405nm) light at an irradiance of 2...
September 5, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28867660/effects-of-smear-layer-removal-agents-on-the-physical-properties-and-microstructure-of-mineral-trioxide-aggregate-cement
#7
Nidambur Vasudev Ballal, Mrunali Sona, Franklin R Tay
OBJECTIVE: To compare the effect of QMix (Dentsply Sirona), 7% maleic acid (MA), and 17% ethylenediaminetetraacetic acid (EDTA) on the microhardness, flexural strength and microstructure of mineral trioxide aggregate (MTA; ProRoot MTA, Dentsply Sirona). METHODS: Forty MTA specimens were divided into four groups: [I] QMix [II] 7% MA [III] 17% EDTA and [IV] distilled water (control). After treatment with 5mL of the respective solution for 1min, the specimens were tested for microhardness using a Knoop hardness tester...
September 1, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28867661/influence-of-specimens-geometry-and-materials-on-the-thermal-stresses-in-dental-restorative-materials-during-thermal-cycling
#8
Douglas Fabris, Júlio C M Souza, Filipe S Silva, Márcio Fredel, Michael Gasik, Bruno Henriques
OBJECTIVES: Thermal cycling is widely used to simulate the aging of restorative materials corresponding to the changes of temperature in the oral cavity. However, test parameters present in literature vary considerably, which prevents comparison between different reports. The aim of this work is to assess the influence of the specimens' geometry and materials on the thermal stresses developed during thermal cycling tests. MATERIALS AND METHODS: Finite elements method was used to simulate the conditions of thermal cycling tests for three different sample geometries: a three-points bending test sample, a cylinder rod and more complex shape of a restoration crown...
August 31, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28863963/a-qualitative-study-of-patients-views-of-techniques-to-reduce-dental-anxiety
#9
Min-Ching Wang, Karen Vinall-Collier, Julia Csikar, Gail Douglas
OBJECTIVES: To explore the fear/anxiety inducing triggers associated with dental treatment, and what dentally anxious adults would like from their dental encounter. METHODS: Two focus-groups and three interviews with fourteen dentally-anxious people were conducted in this qualitative study. All discussions were tape-recorded and transcribed verbatim. Content was categorised by common characteristics to identify underlying themes using thematic analysis. RESULTS: Four themes were identified to bring general meaning within the content: 1...
August 31, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28866468/topical-silver-diamine-fluoride-for-dental-caries-arrest-in-preschool-children-a-randomized-controlled-trial-and-microbiological-analysis-of-caries-associated-microbes-and-resistance-gene-expression
#10
Peter Milgrom, Jeremy A Horst, Sharity Ludwig, Marilynn Rothen, Benjamin W Chaffee, Svetlana Lyalina, Katherine S Pollard, Joseph L DeRisi, Lloyd Mancl
OBJECTIVES: The Stopping Cavities Trial investigated effectiveness and safety of 38% silver diamine fluoride in arresting caries lesions. MATERIALS AND METHODS: The study was a double-blind randomized placebo-controlled superiority trial with 2 parallel groups. The sites were Oregon preschools. Sixty-six preschool children with ≥1 lesion were enrolled. Silver diamine fluoride (38%) or placebo (blue-tinted water), applied topically to the lesion. The primary endpoint was caries arrest (lesion inactivity, Nyvad criteria) 14-21days post intervention...
August 30, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28863962/in-vitro-efficacy-of-essential-oil-mouthrinse-versus-dentifrices
#11
Benjamin Serbiak, Tara Fourre, Anthony R Geonnotti, Robert J Gambogi
OBJECTIVES: To compare the antimicrobial efficacy and kill penetration of essential oils (EO) mouthrinse versus stannous fluoride, and triclosan dentifrice slurries on saliva-derived biofilms using confocal laser scanning microscopy (CLSM). METHODS: Saliva-derived biofilms were grown for 48hours on hydroxyapatite discs using pooled, homogenized saliva from 8 healthy volunteers as the inoculum. The mean thickness of these biofilms was 84μm (range, 23-241μm). CLSM with viability mapping was used to visualize the antimicrobial kill penetration of each treatment regime within a biofilm...
August 29, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28859965/comparison-of-the-newer-preventive-therapies-on-remineralisation-of-enamel-in-vitro
#12
M Bataineh, M Malinowski, M S Duggal, J F Tahmassebi
OBJECTIVES: To investigate in vitro the effect of MI Paste, MI Paste Plus and 2800ppm fluoride (F) toothpaste (TP) on the remineralisation of enamel subsurface lesions and to compare these to the effect of 1450ppm and 0ppm F toothpastes. METHODS: Enamel subsurface lesions were created in bovine enamel slabs (n=120) which were assigned randomly to five groups; (1) 0ppm F TP, (2) 1450ppm F TP, (3) 2800ppm F TP, (4) 1450ppm F TP+MI Paste (Tooth Mousse-TM,10% w/v CPP-ACP) and (5) 1450ppm F TP+MI Paste Plus (Tooth Mousse Plus,10% w/v CPP-ACP, 900ppm F as 0...
August 28, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28859964/in-vitro-and-clinical-evaluation-of-optical-tooth-whitening-toothpastes
#13
Danying Tao, Jianing N Sun, Xiaojie Wang, Qiong Zhang, Mojgan A Naeeni, Carole J Philpotts, Andrew Joiner
OBJECTIVES: To measure tooth whitening effects delivered immediately after brushing with silica-based toothpastes containing either blue covarine or a combination of blue covarine and FD&C Blue No. 1 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) or a formulation containing a matched level of blue covarine and FD&C Blue No.1 (BC+D). The colour of the specimens were measured in vitro using a colorimeter, before and after brushing and changes in CIELAB and tooth Whiteness Index (WIO) values calculated...
August 28, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28855141/the-effect-of-local-and-systemic-statin-use-as-an-adjunct-to-non-surgical-and-surgical-periodontal-therapy-a-systematic-review-and-meta-analysis
#14
REVIEW
Kristina Bertl, Arlinda Parllaku, Nikolaos Pandis, Kåre Buhlin, Björn Klinge, Andreas Stavropoulos
OBJECTIVES: To evaluate the effect of local and/or systemic statin use as an adjunct to non-surgical and/or surgical periodontal therapy. DATA: Literature search according to PRISMA guidelines with the following eligibility criteria: (a) English or German language; (b) interventional studies; (c) statins as monotherapy or as an adjunct to non-surgical and/or surgical treatment of periodontitis; (d) clinical and/or radiographic treatment effect size of statin intake reported...
August 27, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28844892/susceptibility-of-contemporary-single-bottle-self-etch-dentine-adhesives-to-intrinsic-water-permeation
#15
Cesar R Pucci, Li-Sha Gu, Chang Zeng, Ya-Ping Gou, Franklin R Tay, Li-Na Niu
OBJECTIVES: To evaluate the effect of intrinsic water permeation on the microtensile bond strengths of different adhesive systems to dentine and the quality of resin-dentine interfaces. METHODS: Ninety-six non-carious human third molars were divided into 4 groups: Clearfil S(3) Bond Plus (CSBP; Kuraray); Clearfil S(3) Bond (C3S; Kuraray); iBond Self-Etch (IB; Heraeus-Kulzer) and Prime&Bond NT (PB, control etch-and-rinse adhesive, Dentply-Sirona). For each adhesive, specimens from one subgroup (N=10) were bonded using zero pulpal pressure, while specimens from the other subgroup (N=10) were bonded using 15cm water pressure (PP)...
August 24, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28843960/interfacial-degradation-of-adhesive-composite-restorations-mediated-by-oral-biofilms-and-mechanical-challenge-in-an-extracted-tooth-model-of-secondary-caries
#16
Carola A Carrera, Yuping Li, Ruoquiong Chen, Conrado Aparicio, Alex Fok, Joel Rudney
Objective To study the combined effect of simulated occlusal loading and plaque-derived biofilm on the interfacial integrity of dental composite restorations, and to explore whether the effects are modulated by the incorporation of sucrose. Methods MOD-class-II restorations were prepared in third molars. Half of the specimens (n = 27) were subjected to 200,000 cycles of mechanical loading using an artificial oral environment (ART). Then, both groups of specimens (fatigued and non-fatigued) were divided into three subgroups for testing in CDC-reactors under the following conditions: no biofilm (Control), biofilm with no sucrose (BNS) and biofilm pulsed with sucrose (BWS)...
August 23, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28838679/polyols-and-remineralisation-of-enamel-subsurface-lesions
#17
Peiyan Shen, Glenn D Walker, Yi Yuan, Coralie Reynolds, Eric C Reynolds
Sugar-free chewing gum containing polyols has been demonstrated to reduce caries experience in randomised controlled clinical trials. A range of polyols (mannitol, sorbitol, xylitol and maltitol) can be found in sugar-free gums and it has been claimed that they can facilitate calcium uptake into enamel subsurface lesions promoting remineralisation. OBJECTIVES: The aim of this study was to compare the effect of polyols on remineralisation of enamel subsurface lesions in vitro by artificial saliva (AS) and by AS containing the salivary biomimetic casein phosphopeptide amorphous calcium phosphate (CPP-ACP)...
August 21, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28826985/novel-self-healing-dental-luting-cements-with-microcapsules-for-indirect-restorations
#18
Junling Wu, Qiang Zhang, Michael D Weir, Thomas W Oates, Chuanjian Zhou, Xiaofeng Chang, Hockin H K Xu
OBJECTIVES: Dental luting cements are widely used to bond indirect restorations to teeth. Microcracks often lead to cement failures. The objectives of this study were to develop the first self-healing luting cement, and investigate dentin bond strength, mechanical properties, crack-healing, and self-healing durability in water-aging for 6 months. METHODS: Microcapsules of poly(urea-formaldehyde) (PUF) shells with triethylene glycol dimethacrylate (TEGDMA) as healing liquid were synthesized...
August 18, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28826984/in-vitro-evaluation-of-a-silica-whitening-toothpaste-containing-blue-covarine-on-the-colour-of-teeth-containing-anterior-restoration-materials
#19
Carole J Philpotts, Eufemia Cariddi, Paul S Spradbery, Andrew Joiner
OBJECTIVES: To investigate the effects of a silica-based whitening toothpaste containing blue covarine on the colour of restorations in extracted human teeth. METHODS: Human extracted teeth were mounted in acrylic resin. A cavity was cut into the enamel surface and the specimen restored with either glass ionomer or composite dental materials. Following 4 weeks storage in water, specimens were treated with either water, red wine or a toothpaste containing blue covarine (n=10) for 24h followed by brushing with a silica-based toothpaste...
August 18, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28807776/sleep-behaviors-in-children-with-different-frequencies-of-parental-reported-sleep-bruxism
#20
Claudia Restrepo, Daniele Manfredini, Frank Lobbezoo
OBJECTIVE: Knowledge on the relationship between sleep bruxism (SB) and sleep behaviors in children is still fragmental, especially when socioeconomic factors are concerned. To assess sleep behaviors in children with different frequencies of proxy-reported SB. METHODS: Parents of 1475 Colombian children, aged 9.8±1.6years, belonging to 3 different social layers, filled out a questionnaire on their childreńs sleep (Childreńs Sleep Habits Questionnaire [CSHQ])...
August 12, 2017: Journal of Dentistry
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