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Journal of Dentistry

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https://www.readbyqxmd.com/read/28438560/longitudinal-investigation-of-salivary-proteomic-profiles-in-the-development-of-early-childhood-caries
#1
Shuang Ao, Xiangyu Sun, Xiangru Shi, Xin Huang, Feng Chen, Shuguo Zheng
OBJECTIVES: To investigate differentially expressed salivary peptides in the development of early childhood caries (ECC) in 3-4 year-old children. MATERIALS AND METHODS: Eighty-two caries-free children at baseline were followed-up for 1year, during which period 15 of them had developed ECC (GroupC), whilst another 15 cases out of the 31 individuals who remained healthy were marked as Group H. Stimulated whole saliva samples were collected at 0, 6 and 12 months, and analyzed using weak cation exchange magnetic beads combined with matrix assisted laser desorption/ionization time-of-flight mass spectrometry...
April 21, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28438559/the-role-of-copper-nanoparticles-in-an-etch-and-rinse-adhesive-on-antimicrobial-activity-mechanical-properties-and-the-durability-of-resin-dentine-interfaces
#2
Mario F Gutiérrez, Pamela Malaquias, Viviane Hass, Thalita P Matos, Lucas Lourenço, Alessandra Reis, Alessandro D Loguercio, Paulo Vitor Farago
OBJECTIVES: To evaluate the effect of addition of copper nanoparticles at different concentrations into an etch-and-rinse adhesive (ER) on antimicrobial activity, Knoop microhardness (KHN), in vitro and in situ degree of conversion (DC), as well as the immediate (IM) and 2-year (2Y) resin-dentine bond strength (μTBS) and nanoleakage (NL). METHODS: Seven experimental ER adhesives were formulated according to the amount of copper nanoparticles incorporated into the adhesives (0 [control], 0...
April 21, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28433536/assessment-of-enamel-cracks-at-adhesive-cavosurface-margin-using-three-dimensional-swept-source-optical-coherence-tomography
#3
Tomoko Tabata, Yasushi Shimada, Alireza Sadr, Junji Tagami, Yasunori Sumi
OBJECTIVES: Swept-source optical coherence tomography (SS-OCT) can construct cross-sectional images of internal biological structures. The aim of this study was to evaluate enamel cracks at the cavosurface margin of composite restorations using SS-OCT. METHODS: Bowl-shaped cavities were prepared at two locations (mid-coronal and cervical regions) on the enamel surface of 60 bovine teeth. Half of the cavities (30) were treated with phosphoric acid gel. A two-step self-etch adhesive (Clearfil SE Bond) was applied to all cavities and a flowable composite was placed in bulk...
April 19, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28414171/the-effects-of-water-on-degradation-of-the-zirconia-resin-bond
#4
C Chen, Y Chen, Z Lu, M Qian, H Xie, F R Tay
OBJECTIVES: 10-methacryloyloxydecyldihydrogenphosphate (MDP) containing primers improve bonding of yttria-stabilised tetragonal zirconia (Y-TZP) to methacrylate resins. The present study investigated the role played by water in the deterioration of MDP-mediated zirconia-resin bonds. METHODS: Grit-blasted Y-TZP plates were conditioned with two MDP primers and bonded with resin for shear bond strength (SBS) testing. Additional bonded plates were aged hydrothermally and compared with unaged Y-TZP after 24hours of water-storage or 6 months of water/acid/alkali-storage...
April 13, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28392215/a-randomized-clinical-trial-of-oral-hygiene-care-programmes-during-stroke-rehabilitation
#5
Ruoxi Dai, Otto L T Lam, Edward C M Lo, Leonard S W Li, Colman McGrath
OBJECTIVES: The objectives of this study were to evaluate and compare the effectiveness of an advanced oral hygiene care programme (AOHCP) and a conventional oral hygiene care programme (COHCP) in improving oral hygiene, and reducing gingival bleeding among patients with stroke during outpatient rehabilitation. METHODS: Subjects were randomized to receive (i) the COHCP comprising a manual toothbrush, toothpaste, and oral hygiene instruction, or (ii) the AOHCP comprising a powered toothbrush, 0...
April 6, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28392214/the-role-of-social-comparison-in-social-judgments-of-dental-appearance-an-experimental-study
#6
Ghada H Al-Kharboush, Koula Asimakopoulou, AlJazi H AlJabaa, J Tim Newton
OBJECTIVE: The objective of this study was to examine the influence of social comparison on social judgments of dental malalignment in a sample of females. METHOD: In a Repeated measures design, N=218 female participants of which N=128 were orthodontic patients (mean age 31.4) and N=90 controls (mean age 26.1) rated their satisfaction with their facial appearance after viewing stereotypically beautiful images of faces (experimental condition) or houses (neutral condition)...
April 6, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28380347/oral-health-care-behavior-and-frailty-related-factors-in-a-care-dependent-older-population
#7
Dominique Niesten, Dick Witter, Ewald Bronkhorst, Nico Creugers
OBJECTIVES: To assess, in older people with different levels of care-dependency 1) which frailty- and non-frailty related predisposing, enabling and need factors are associated with a) dental service use (DSU) frequency, b) changed DSU after the onset of care-dependency, c) brushing frequency, and d) changed brushing frequency since the onset of care-dependency; and 2) if unfavorable oral health care behavior is related to unfavorable oral health outcomes. METHODS: Bivariate analyses and multivariable logistic regression analyses were performed to evaluate data from 126 Dutch care-dependent people aged≥65 on oral and general health, psychological and social issues...
April 2, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28359700/the-effect-of-first-and-second-premolar-extractions-on-third-molars-a-retrospective-longitudinal-study
#8
A Miclotte, B Grommen, M Cadenas de Llano-Pérula, A Verdonck, R Jacobs, G Willems
OBJECTIVES: To analyse the effect of first and second premolar extractions on eruption space for upper and lower third molars and on third molar position and angulation during orthodontic treatment. METHODS: The sample consisted of 296 patients of which 218 patients were orthodontically treated without extraction and 78 patients with extraction of first or second premolars. The eruption space for third molars was measured on pre- and posttreatment lateral cephalograms, whereas the angulation, vertical position, the relation with the mandibular canal and the mineralization status of third molars were evaluated using pre- and posttreatment panoramic radiographs...
March 27, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28347809/developmental-defects-of-enamel-and-dental-caries-in-the-primary-dentition-a-systematic-review-and-meta-analysis
#9
REVIEW
Francine S Costa, Ethieli R Silveira, Gabriela S Pinto, Gustavo G Nascimento, William Murray Thomson, Flávio F Demarco
OBJECTIVES: This systematic review and meta-analysis evaluated the association between developmental defects of enamel and dental caries in the primary dentition. SOURCES: Electronic searches were performed in PubMed, Web of Knowledge, Scopus and Scielo for the identification of relevant studies. STUDY SELECTION: Observational studies that examined the association between developmental defects of enamel and dental caries in the deciduous dentition were included...
March 24, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28322885/fluoride-concentration-in-saliva-and-biofilm-fluid-following-the-application-of-three-fluoride-varnishes
#10
L Al Dehailan, F Lippert, C González-Cabezas, G J Eckert, E A Martinez-Mier
OBJECTIVE: Most of the commercially available fluoride varnishes (FV) have not been evaluated for their cariostatic properties. Consequently, the aim of this in vivo study was to investigate intra-oral fluoride retention and clearance patterns from three different FV. METHODS: Eighteen subjects (7-11 years) participated in a laboratory analyst-blinded, randomized, crossover study comparing the ability of 5% sodium fluoride varnishes (CavityShield-CS, Enamel Pro-EP, Vanish-V) to enhance fluoride concentrations in biofilm fluid, centrifuged and whole saliva over a period of 48h after a single FV application...
March 18, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28315376/effect-of-a-novel-quaternary-ammonium-silane-cavity-disinfectant-on-durability-of-resin-dentine-bond
#11
D Umer, C K Y Yiu, M F Burrow, L-N Niu, F R Tay
OBJECTIVE: The present study examined the effect of a quaternary ammonium silane (QAS) cavity disinfectant on the viability of human dental pulp cells, dentine bond durability and nanoleakage of simplified etch-and-rinse adhesives. METHODS: Etched dentine surface of third molars were randomly divided into two adhesive groups, Adper™ Single Bond 2 and Prime & Bond(®) NT™. For each adhesive, the teeth were randomly assigned to five cavity disinfectant groups (N=6): Group 1: deionised water (control); Group 2: 2% chlorhexidine (CHX); Group 3: 2% QAS; Group 4: 5% QAS and Group 5: 10% QAS...
March 14, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28286174/imaging-resin-infiltration-into-non-cavitated-carious-lesions-by-optical-coherence-tomography
#12
Hartmut Schneider, Kyung-Jin Park, Claudia Rueger, Dirk Ziebolz, Felix Krause, Rainer Haak
OBJECTIVES: Visualisation of the etching process and resin penetration at white spot carious lesions by spectral domain optical coherence tomography (SD-OCT). MATERIALS AND METHODS: The non-cavitated carious lesions (ICDAS code 2) of four visually preselected extracted human molars and premolars were verified as enamel lesions by micro computed tomography (μCT). One region of interest (ROI) per tooth was marked by two drill-holes in occlusal-cervical direction...
March 10, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28274651/translucent-zirconia-in-the-ceramic-scenario-for-monolithic-restorations-a-flexural-strength-and-translucency-comparison-test
#13
Michele Carrabba, Andrew J Keeling, Aziz Aziz, Alessandro Vichi, Riccardo Fabian Fonzar, David Wood, Marco Ferrari
OBJECTIVE: To compare three different compositions of Yttria-Tetragonal Zirconia Polycrystal (Y-TZP) ceramic and a lithium disilicate ceramic in terms of flexural strength and translucency. METHODS: Three zirconia materials of different composition and translucency, Aadva ST [ST], Aadva EI [EI] and Aadva NT [NT](GC Tech, Leuven, Belgium) were cut with a slow speed diamond saw into beams and tabs in order to obtain, after sintering, dimensions of 1.2×4.0×15.0mm and 15...
March 6, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28267581/comparison-of-in-vitro-dentinal-tubule-occluding-efficacy-of-two-different-methods-using-a-nano-scaled-bioactive-glass-containing-desensitising-agent
#14
Qian Ma, Tianda Wang, Qingfei Meng, Xiao Xu, Huaying Wu, Dongjing Xu, Yaming Chen
OBJECTIVE: This study aimed to compare the in vitro dentinal tubule occluding efficacy of two different methods using a nano-scaled bioactive glass (BG)-containing desensitising agent. METHODS: Citric acid treated dentine discs were randomly divided into 7 groups (n=8). Group A1, A2 and A3: dentine discs coated with BG desensitising paste; Group B1, B2 and B3: dentine discs coated with BG desensitising paste and covered with matched transparent trays; and control group (GroupC): dentine discs treated with deionised water...
March 4, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28257993/release-of-monomers-from-composite-dust
#15
S M Cokic, R C Duca, L Godderis, P H Hoet, J W Seo, B Van Meerbeek, K L Van Landuyt
OBJECTIVES: Dental personnel are more at risk to develop asthmatic disease, but the exact reason is so far unknown. During abrasive procedures, dental personnel are exposed to nano-sized dust particles released from dental composite. The aim of this study was to investigate whether respirable composite dust may also release monomers. METHODS: Respirable (<5μm) composite dust was collected and the release of methacrylate monomers and Bisphenol A (BPA) in water and ethanol was evaluated by liquid chromatography/mass spectroscopy (LC-MS/MS)...
March 1, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28249744/effects-of-tooth-brushing-force-with-a-desensitising-dentifrice-on-dentine-tubule-patency-and-surface-roughness
#16
F Mullan, S Paraskar, D W Bartlett, R C Olley
OBJECTIVES: To investigate the effects of a 5% NovaMin containing dentifrice on dentine tubule patency and surface roughness at 100g and 400g tooth brush abrasion forces. METHODS: 75 polished human dentine samples were prepared and randomly allocated into one of five groups; control (1), Na2PFO3 100g abrasion force (2), NovaMin 100g (3), Na2PFO3 400g (4) and NovaMin 400g (5). The control group underwent two 2-min cycles of artificial saliva (AS), one 2-min erosion cycle; the rest underwent two toothbrush abrasion cycles in an AS/dentifrice slurry and one 2-min erosion cycle...
February 27, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28215957/an-approach-to-understanding-tribological-behaviour-of-dental-composites-through-volumetric-wear-loss-and-wear-mechanism-determination-beyond-material-ranking
#17
Asmaa Altaie, Nigel L Bubb, Paul Franklin, Adam H Dowling, Garry J P Fleming, David J Wood
OBJECTIVE: To investigate the fundamental wear mechanisms of six resin-based composite (RBC) formulations during short-term in vitro wear testing. MATERIALS: RBC materials were condensed into rectangular bar-shaped specimens and light irradiated using the ISO 4049 specimen manufacture and irradiation protocol. Wear testing (n=10 specimens for each RBC) was performed on a modified pin-on-plate wear test apparatus and wear facets were analysed for wear volume loss using a white light profilometer...
February 25, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28212979/degradation-of-optical-and-surface-properties-of-resin-based-composites-with-distinct-nanoparticle-sizes-but-equivalent-surface-area
#18
Vinícius Esteves Salgado, Larissa Maria Cavalcante, Rafael R Moraes, Harry B Davis, Jack L Ferracane, Luis Felipe Schneider
OBJECTIVE: To determine the optical and surface properties of model resin-based composites made with distinct nanoparticle sizes but equalized surface area, among them, before and after ageing. METHODS: Model resin-based composites based on BisGMA/TEGDMA (50:50mol%) were loaded with three different fumed silica filler content (7nm/examethyldisilazane, 12nm/octylsilane, and 16nm/dimethylchlorosilane), but with equivalent surface area (BET method). The optical and surface properties of the disk-shaped specimens were measured in 24h after photoactivation (baseline) and repeated after water storage (90days at 37°C), and after abrasion (20,000 cycles of brushing)...
February 25, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28212978/a-systematic-review-of-the-survival-and-complication-rates-of-inlay-retained-fixed-dental-prostheses
#19
REVIEW
Junyu Chen, He Cai, Lai Suo, Yiyuan Xue, Jian Wang, Qianbing Wan
OBJECTIVES: The aim of this systematic review was to investigate the survival and complication rates of inlay-retainer fixed dental prostheses (IRFDPs). DATA/SOURCES: A systematic search was conducted in the PubMed, EMBASE, and Cochrane Library databases in English and time filters (articles published from 1960) were used. STUDY SELECTION: Randomized controlled trails (RCTs), controlled clinical trials (CCTs) and prospective cohort studies on IRFDPs with a mean follow-up period of at least 2 years were included...
February 23, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28237629/effectiveness-of-pre-treatment-with-chlorhexidine-in-restoration-retention-a-36-month-follow-up-randomized-clinical-trial
#20
Morgana Favetti, Thaiane Schroeder, Anelise Fernandes Montagner, Marcos Britto Correa, Tatiana Pereira-Cenci, Maximiliano Sergio Cenci
OBJECTIVES: This study evaluated the effect of the pre-treatment with 2% chlorhexidine digluconate (CHX) as coadjutant in restoration retention of noncarious cervical lesions (NCCL), after 36 months of follow-up. METHODS: A randomized controlled split-mouth and triple-blind (operators, patients and evaluator) trial was carried out. Patients (n=42) with at least two non-carious cervical lesions were included. The teeth with NCCL were randomly assigned to two treatment groups: application of 2% CHX (experimental group) or a placebo solution (control group) for 60s after acid etching and before the adhesive application...
February 22, 2017: Journal of Dentistry
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