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Journal of Dentistry

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https://www.readbyqxmd.com/read/28212978/a-systematic-review-of-the-survival-and-complication-rates-of-inlay-retained-fixed-dental-prostheses
#1
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
#2
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 60 s after acid etching and before the adhesive application...
February 22, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28232082/repair-vs-replacement-of-direct-composite-restorations-a-survey-of-teaching-and-operative-techniques-in-oceania
#3
Paul A Brunton, Amna Ghazali, Zahidah H Tarif, Carolina Loch, Christopher Lynch, Nairn Wilson, Igor R Blum
OBJECTIVES: To evaluate the teaching and operative techniques for the repair and/or replacement of direct resin-based composite restorations (DCRs) in dental schools in Oceania. METHODS: A 14-item questionnaire was mailed to the heads of operative dentistry in 16 dental schools in Oceania (Australia, New Zealand, Fiji and Papua New Guinea). The survey asked whether the repair of DCRs was taught within the curriculum; the rationale behind the teaching; how techniques were taught, indications for repair, operative techniques, materials used, patient acceptability, expected longevity and recall systems...
February 20, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28232081/a-novel-approach-to-study-in-situ-enamel-erosion-and-abrasion-lesions
#4
M A Ablal, A Milosevic, A J Preston, S M Higham
OBJECTIVES: This study investigated previous hypotheses that the tongue can abrade acid softened/eroded enamel surfaces. METHODS: Twelve upper removable appliances each retaining 2 anterior and 2 posterior human enamel specimens were constructed. Each specimen was exposed to acid on both surfaces, but only one surface was allowed contact with the tongue. Therefore, 96 surfaces were assessed. Appliances were worn from 9.30 to 17.00 Monday to Friday for 22 days. Acid eroded lesions were created by immersing the specimens for 5min in 50ml orange juice three times daily...
February 20, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28223199/poly-methyl-methacrylate-with-tio2-nanoparticles-inclusion-for-stereolitographic-complete-denture-manufacturing-the-fututre-in-dental-care-for-elderly-edentulous-patients
#5
Eugenia Eftimie Totu, Aurelia Cristina Nechifor, Gheorghe Nechifor, Hassan Y Aboul-Enein, Corina Marilena Cristache
OBJECTIVES: The aim of this study was to obtain a Poly(methylmethacrylate) (PMMA)-TiO2 nanocomposite material with improved antibacterial characteristics, suitable for manufacturing 3D printed dental prosthesis. METHODS: 0.2, 0.4, 0.6, 1, 2.5 by weight% of TiO2 nanoparticles have been added to the commercially available stereolithographic PMMA material and the obtained nanocomposites have been analyzed using FTIR, SEM and also tested for antimicrobial efficacy against bacterial cultures from Candida species (C...
February 18, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28223198/novel-bioactive-root-canal-sealer-to-inhibit-endodontic-multispecies-biofilms-with-remineralizing-calcium-phosphate-ions
#6
Lin Wang, Xianju Xie, Chunyan Li, Huaibing Liu, Ke Zhang, Yanmin Zhou, Xiaofeng Chang, Hockin H K Xu
OBJECTIVE: The objectives of this study were to: (1) develop a bioactive endodontic sealer via dimethylaminohexadecyl methacrylate (DMAHDM), 2-methacryloyloxyethyl phosphorylcholine (MPC) and nanoparticles of amorphous calcium phosphate (NACP) for the first time; and (2) evaluate inhibition of early-stage and mature multispecies endodontic biofilm, bond strength to root canal dentin, and calcium (Ca) and phosphate (P) ion release. METHODS: A series of bioactive endodontic sealers were formulated with DMAHDM, MPC, and NACP...
February 18, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28219674/exploratory-randomised-controlled-clinical-study-to-evaluate-the-comparative-efficacy-of-two-occluding-toothpastes-a-5-calcium-sodium-phosphosilicate-toothpaste-and-an-8-arginine-calcium-carbonate-toothpaste-for-the-longer-term-relief-of-dentine-hypersensitivity
#7
Claire Hall, Stephen Mason, Jonathan Cooke
OBJECTIVE: To compare the longer-term clinical efficacy of two occlusion-technology toothpastes - a 5% calcium sodium phosphosilicate (CSPS) toothpaste and a commercially available 8% arginine/calcium carbonate toothpaste - in relieving dentine hypersensitivity (DH). Efficacy was also compared with that of a regular fluoride toothpaste control. METHODS: This was an exploratory, randomised, examiner-blind, parallel-group, 11-week, controlled study in healthy adults with self-reported and clinically diagnosed DH...
February 17, 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
#8
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 16, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28214537/biomechanical-behavior-of-endodontically-treated-premolars-using-different-preparation-designs-and-cad-cam-materials
#9
Diogo Pedrollo Lise, Annelies Van Ende, Jan De Munck, Thaís Yumi Umeda Suzuki, Luiz Clovis Cardoso Vieira, Bart Van Meerbeek
OBJECTIVES: To evaluate the effect of restoration design ('2.5-mm deep endocrown', '5-mm deep endocrown' or '5-mm deep post&crown') and CAD/CAM material type (composite or lithium disilicate glass-ceramic) on the load-to-failure of endodontically treated premolars in absence of any ferrule. METHODS: The crowns of 48 single-rooted premolars were cut and the roots were endodontically treated. Teeth were randomly divided into six groups (n=8); teeth in each group were restored using one of the two tested materials with standardized CAD/CAM fabricated endocrowns (with either 2...
February 15, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28212980/biofilm-formation-and-release-of-fluoride-from-dental-restorative-materials-in-relation-to-their-surface-properties
#10
Sebastian Hahnel, Andrei C Ionescu, Gloria Cazzaniga, Marco Ottobelli, Eugenio Brambilla
OBJECTIVES: To elucidate the impact of surface properties and the release of fluoride from different glass ionomer cements on biofilm formation. METHODS: Standardized specimens manufactured from various classes of glass ionomer cements (GICs), a resin-based composite (RBC), and human enamel were subjected to surface analyses. Subsequent to simulation of salivary pellicle formation, Streptococcus mutans biofilm formation was initiated using a drip flow reactor for 48h and 96h...
February 14, 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
#11
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 14, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28189719/is-a-basic-erosive-wear-examination-bewe-reliable-for-recording-erosive-tooth-wear-on-3d-models
#12
Viivi Alaraudanjoki, Henna Saarela, Reetta Pesonen, Marja-Liisa Laitala, Heikki Kiviahde, Leo Tjäderhane, Adrian Lussi, Paula Pesonen, Vuokko Anttonen
OBJECTIVES: To assess the reliability of the BEWE index on 3D models and to compare 3D-assessed erosive tooth wear scores with clinically detected scores. METHODS: In total, 1964 members of the Northern Finland Birth Cohort 1966 participated in a standardized clinical dental examination including the Basic Erosive Wear Examination (BEWE) and dental 3D modelling at the age of 45-46 years. Of those examined, 586 were randomly selected for this study. 3D models were assessed using the same BEWE criteria as in the clinical examination...
February 9, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28189718/confounding-factors-affecting-the-marginal-quality-of-an-intra-oral-scan
#13
Andrew Keeling, Jinhua Wu, Marco Ferrari
OBJECTIVES: To assess the effect of clinical factors on the quality of intra-oral scans of crown margins. These factors are; presence of adjacent teeth, proximity to gingivae, encumbrance of wand positioning within oral cavity. METHODS: A typodont lower molar (Frasaco, Germany) was prepared for an all-ceramic crown with 1.5mm supragingival (lingual) and equigingival (buccal) margins. The tooth was scanned in a model scanner, creating a master scan. An intra-oral scanner (IOS) (Omnicam, Sirona Dental) was used to acquire sets of 5 scans each, under varying conditions; (1) the presence/absence of adjacent teeth, (2) model mounted in manikin head/hand-held, (3) with/without a 1mm shim to elevate the margin...
February 9, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28179193/light-curing-procedures-performance-knowledge-level-and-safety-awareness-among-dentists
#14
S E Kopperud, H V Rukke, H M Kopperud, E M Bruzell
OBJECTIVES: This study aimed to investigate dentists' exposure to curing light and to obtain information about the dentists' knowledge on practical use and technical features of their curing lights as well as their safety awareness. METHODS: A pre-coded questionnaire was sent electronically to all dentists (n=1313) in the Public Dental Service (PDS) in Norway in 2015. RESULTS: The Response rate was 55.8%. The dentists spent on average 57.5% of their working days placing restorations, ranging from 1 to 30 (mean 7...
February 6, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28174053/effect-of-different-surface-treatment-techniques-on-the-repair-strength-of-indirect-composites
#15
B A C Loomans, M E Mesko, R R Moraes, J Ruben, E M Bronkhorst, T Pereira-Cenci, M C D N J M Huysmans
OBJECTIVES: Composite resin restorations present high survival rates and when a failure occurs repair is often possible. The aim of this study was to assess the effect of various repair techniques on indirect restorations. METHODS: LAVA Ultimate (3M), and Clearfil Estenia blocks (Kuraray) were repaired with our without surface roughness treatments, silane application and artificial ageing. Micro-shear bond stress tests were performed, while cohesive strength served as positive control...
February 4, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28161365/a-randomised-clinical-trial-to-determine-the-abrasive-effect-of-the-tongue-on-human-enamel-loss-with-and-without-a-prior-erosive-challenge
#16
J Seong, N Claydon, E Macdonald, S Garner, R G Newcombe, N West
OBJECTIVES: To investigate the abrasive effect of the tongue on human enamel loss with and without a prior dietary acid challenge in an in situ model. METHODS: A single centre, single blind, randomly allocated, split mouth, four treatment regimen, in situ study in healthy adult volunteers was undertaken. Twenty four subjects wore two lower intra-oral appliances each fitted with 4 human enamel samples 6h/day for 15 days. The samples were treated with either 50ml orange juice or water for 5min ex vivo 4x/day; prior to being licked or not licked with the subject's tongue for 60s...
February 1, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28159508/mechanical-performance-of-polymer-infiltrated-zirconia-ceramics
#17
Jing Li, Xue-Hui Zhang, Ben-Cang Cui, Yuan-Hua Lin, Xu-Liang Deng, Ming Li, Ce-Wen Nan
OBJECTIVE: The aim of this study was to evaluate the microstructure and mechanical behavior of polymer-infiltrated zirconia ceramics as a function of pre-sintering temperature (1000-1150°C). METHODS: Polymer-infiltrated zirconia ceramics were prepared by combining the porous zirconia networks and polymer through infiltration and polymerization. XRD was employed to determine phase structure. The microstructure and fracture mechanism were observed by SEM. Flexural strength and fracture toughness were measured by three-point bending method and single-edge-notched beam method, respectively...
January 31, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28159507/impact-of-the-consort-statement-endorsement-in-the-completeness-of-reporting-of-randomized-clinical-trials-in-restorative-dentistry
#18
Rafael Sarkis-Onofre, Victório Poletto-Neto, Maximiliano Sérgio Cenci, Tatiana Pereira-Cenci, David Moher
OBJECTIVES: The aim of this study was to assess if journal endorsement of the CONSORT Statement is associated with improved completeness of reporting of randomized controlled trials (RCTs) in restorative dentistry. MATERIALS AND METHODS: RCTs in restorative dentistry published in two journals that have (Journal of Dentistry and Clinical Oral Investigations) and have not (Operative Dentistry and Journal of Prosthetic Dentistry) endorsed the CONSORT Statement were selected...
January 31, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28122255/synthesis-and-characterization-of-a-novel-resin-monomer-with-low-viscosity
#19
Lihua Hong, Yu Wang, Lin Wang, Hong Zhang, Hui Na, Zhimin Zhang
OBJECTIVE: In this study, we designed and synthesized a novel macromolecule (tetramethyl bisphenol F acrylate, TMBPF-Ac) with low viscosity, excellent mechanical properties and biocompatibility. It could be used as a monomer for dental resin composites, which could reduce the risk of human exposure to BPA derivatives in the oral environment. In addition, the monomer could be used without diluent, so as to avoid the negative effect of diluent. METHODS: TMBPF-Ac was synthesized by multistep condensation reaction...
January 22, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28115186/red-fluorescence-of-dental-plaque-in-children-a-cross-sectional-study
#20
Catherine M C Volgenant, Egija Zaura, Bernd W Brandt, Mark J Buijs, Marisol Tellez, Gayatri Malik, Amid I Ismail, Jacob M Ten Cate, Monique H van der Veen
OBJECTIVES: The relation between the presence of red fluorescent plaque and the caries status in children was studied. In addition, the microbial composition of dental plaque from sites with red fluorescent plaque (RFP) and from sites with no red fluorescent plaque (NFP) was assessed. METHODS: Fluorescence photographs were taken from fifty children (6-14 years old) with overnight plaque. Full-mouth caries scores (ICDAS II) were obtained. The composition of a saliva sample and two plaque samples (RFP and NFP) was assessed using 16S rDNA sequencing...
January 20, 2017: Journal of Dentistry
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