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European Journal of Prosthodontics and Restorative Dentistry

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https://www.readbyqxmd.com/read/28590097/five-year-clinical-evaluation-of-restorations-placed-in-a-low-shrinkage-stress-composite-in-uk-general-dental-practices
#1
F J Trevor Burke, Russell J Crisp, Ali James, Louis Mackenzie, Owen Thompson, A Pal, Peter Sands, William M Palin
This paper evaluates the five year clinical evaluation of restorations formed in a low shrinkage stress resin composite material (3M ESPE Filtek Silorane, Seefeld, Germany) and placed in the general dental practices of five members of the PREP Panel, a group of UK practice-based researchers. Results indicated satisfactory performance of the material under evaluation, other than for marginal staining, which affected 60% of the restorations evaluated after five years, albeit with less than 10% of the circumference of the restorations being affected...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28590096/efficacy-of-removable-partial-denture-treatment-a-retrospective-oral-health-related-quality-of-life-evaluation
#2
Zaid Ali, Sarah Baker, Poyan Barabari, Nicolas Martin
Successful removable partial dentures (RPDs) use may be influenced by patient and denture variables including age, denture experience and number or position of teeth being replaced. Influence of patient and denture variables on OHRQoL with RPDs was investigated using ordinal logistic regression analysis. METHODS: Participants provided with RPDs were invited to complete OHIP-20 at least 4 weeks after dentures were fitted. Clinical records were retrieved to identify a number of independent variables...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28590095/the-early-erosive-and-abrasive-challenge-a-profilometric-electron-microscopic-and-microhardness-study-using-human-bovine-and-ovine-enamel
#3
James Clark Field, Paula Jane Waterhouse, Matthew John German
AIM: This study aimed to test the null hypothesis that there are no significant differences in surface characteristics of eroded and abraded human, ovine and bovine enamel. DESIGN: Twenty enamel slabs were prepared from bovine, human and ovine incisor crowns, and randomly assigned to one of 4 treatments: 30 second/4 minute immersion at 1%/6% w/v citric acid. Post-erosion, an oscillatory brush was used for 20 seconds. Roughness parameters, height change and scanning electron microscopy were measured at each stage...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28590094/optical-properties-and-failure-load-of-thin-cad-cam-ceramic-veneers
#4
Henriika Maunula, Jenni Hjerppe, Lippo L V Lassila, Timo O Närhi
This study aimed to compare optical properties and failure load of leucite (IPS Empress CAD LT) and lithium disilicate glass ceramic (IPS e.max CAD LT) materials in incisor veneers. Four groups of veneers were made on 36 bovine incisors with Cerec 3D milling unit (n=9/group): 0.5 and 0.3 mm thick leucite glass and 0.5 and 0.3 mm lithium disilicate glass veneers. The optical features were measured with CM-700d spectrophotometer using white and yellow try-in pastes. Differences were determined by means of ΔE value and luminance...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28590093/marginal-adaptation-and-internal-fit-of-posterior-3-unit-zirconia-fpds-fabricated-with-different-cad-cam-systems
#5
Maryam Memarian, Leyla Sadighpour, Rojman Nosratpour, Mohammad J K Fard
The purpose of this study was to compare the accuracy of zirconia FPDs fabricated by different laboratory CAD/CAM system. Thirty-six FPD zirconia frameworks were fabricated on corresponding epoxy resin models that were duplicated from a master model of mandibular second premolar and second molar mounted in an acrylic block to simulate missing first mandibular tooth. Frameworks were divided into groups (n = 12) of three laboratory CAD/CAM systems: Cercon, Amann Girrbach, and Zirkonzahn. For the two factors, system and abutment type, the absolute marginal discrepancy (AMD) was measured before cementation...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28590092/additive-manufacturing-a-novel-method-for-fabricating-cobalt-chromium-removable-partial-denture-frameworks
#6
Frank Alifui-Segbaya, Robert John Williams, Roy George
Additive manufacturing (AM) often referred to as 3D printing (3DP) has shown promise of being significantly viable in the construction of cobalt-chromium removable partial denture (RPD) frameworks. The current paper seeks to discuss AM technologies (photopolymerization processes and selective laser melting) and review their scope. The review also discusses the clinical relevance of cobalt-chromium RPD frameworks. All relevant publications in English over the last 10 years, when the first 3D-printed RPD framework was reported, are examined...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28590091/an-update-on-the-protocols-and-biologic-actions-of-platelet-rich-fibrin-in-dentistry
#7
Rucha Shah, Triveni M G, Raison Thomas, Dhoom Singh Mehta
Platelet rich fibrin (PRF) is a surgical biologic additive that is prepared by manipulation of autologous blood. It has now evolved to become one of the most widely used platelet concentrate in dentistry. It has almost replaced Platelet rich plasma (PRP) for usage owing to its advantages such as being 100% autogenous, easy technique, time and cost effectiveness, superior & prolonged growth factor release. It finds varied applications in dentistry including management of gingival recession, for guided bone regeneration in periodontal, peri-implant and endodontic bone defects...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569452/zirconia-reinforced-lithium-silicate-ceramic-a-2-year-follow-up-of-a-clinical-experience-with-anterior-crowns
#8
Guilherme de Siqueira Ferreira Anzaloni Saavedra, Flávia Pires Rodrigues, Marco Antonio Bottino
The aim of this manuscript is to describe 2-year follow-up of a clinical experience with a zirconia-reinforced lithium silicate ceramic for an anterior rehabilitation with single metal-free crowns. The maxillary-central incisor teeth crowns were made by zirconium-reinforced lithium silicate and covered with porcelain were obtained with a digital impression with the intra-oral scanner of the CEREC system as a basis for virtual design, as well as a laminate for the left lateral maxillary incisor, based on a "double scanning" technique...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569451/treatment-outcomes-and-assessment-of-oral-health-related-quality-of-life-in-treated-hypodontia-patients
#9
Motasum Abu-Awwad, Kenneth Hemmings, Saja Mannaa, Daljit Gill, Akil Gulamali, Aviva Petrie
OBJECTIVES: 1. Assess treatment outcomes and oral health related quality of lifeM (OHRQoL) of hypodontia patients after completing dental treatment at the Eastman Dental Hospital and compare it with British public norms. 2. Assess factors which have an association with patients' reported OHRQoL. METHODS: Hypodontia patients who finished their treatment completed a 16-item questionnaire (UK oral health related quality-of-life measure), a list of four questions about their satisfaction with treatment received and a clinical assessment using modified USPHS criteria...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569450/a-cross-sectional-survey-on-reasons-for-initial-placement-and-replacement-of-single-crowns
#10
Recep Uzgur, Zeynep Uzgur, Hakan Colak, Ertugrul Ercan, Mehmet Dalli, Mutlu Özcan
This cross-sectional survey investigated the reasons for placement and replacement of single crowns, the type of materials selected for initial placement and evaluated their longevity. Information was collected over 19 months period using a questionnaire focusing on the principal reasons for the placement and replacement of crowns, selected material type and the age of the crowns at the time of replacement. A total of 842 single crowns were evaluated in 476 patients. Of the 842 crowns, 472 (56%) were initial placements and 370 (44%) replacements...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569449/a-randomised-controlled-trial-of-a-nanofilled-composite-at-three-years-did-selective-enamel-etching-have-an-effect
#11
F J T Burke, Russell J Crisp, William M Palin, Peter Sands, O Thompson, Jonathan Jones, Ali James, Kerry Osborne-Smith
General dental practice is increasingly being recognised as the ideal situation for the conduct of clinical trials into the longevity of restorations. The aim of this study was to investigate the survival of 75 nanofilled resin composite restorations placed in an assortment of cavities using a self-etch dentine bonding agent, in five UK dental practices by members of the UK-based practice-based research group, the PREP Panel, with half of the restorations receiving a selective enamel etch and the other half being placed using a self-etching approach...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569448/outcomes-of-immediate-function-implant-prosthetic-restorations-with-mechanical-complications-a-retrospective-clinical-study-with-5-years-of-follow-up
#12
Paulo Maló, Miguel Alexandre de Araujo Nobre, Carlos Moura Guedes, Ricardo Almeida
Mechanical complications may have a significant impact on the outcome of implant-supported restorations; however, few studies address the topic. This study investigated the outcomes of implant supported restorations with mechanical complications. A total of 378 patients with 378 restorations supported by 1283 implants were included. Results demonstrated a prosthetic and implant cumulative survival rate at 5 years of 99.7% and 95.7%, respectively. Maxillary implants were a determinant for implant failure (hazard ratio= 6...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569447/marginal-accuracy-and-internal-fit-of-dental-copings-fabricated-by-modern-additive-and-subtractive-digital-technologies
#13
Neha Nelson, Jyothi K S, Kiran Sunny
The margins of copings for crowns and retainers of fixed partial dentures affect the progress of microleakage and dental caries. Failures occur due to altered fit which is also influenced by the method of fabrication. An in-vitro study was conducted to determine among the cast base metal, copy milled zirconia, computer aided designing computer aided machining/manufacturing zirconia and direct metal laser sintered copings which showed best marginal accuracy and internal fit. Forty extracted maxillary premolars were mounted on an acrylic model and reduced occlusally using a milling machine up to a final tooth height of 4 mm from the cementoenamel junction...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569446/the-effect-of-lithium-disilicate-opacity-on-polymerization-of-a-dual-cured-resin-cement
#14
Dylton da Costa Neto, Jefferson Pereira, Saulo Pamato, Accácio do Valle
The aim of this study was to evaluate the influence of different levels of opacity of the lithium disilicate framework upon polymerization of dual-cured resin cement. Four ceramic discs were used, one for each opacity framework covered by their respective ceramic veneering, and a cement group without a ceramic cover. The degree of conversion for each resin cement was estimated using the Knoop microhardness test. The group with the highest opacity showed the lowest hardness score at baseline. The study concluded that the opacity level of lithium disilicate framework could influence the degree of polymerization of a dual-cured resin cement...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569445/can-cleansing-regimens-effectively-eliminate-saliva-contamination-from-lithium-disilicate-ceramic-surface
#15
Alexandre L S Borges, Sumana Posritong, Mutlu Özcan, Fernanda Campos, Renata Melo, Marco C Bottino
This study evaluated the effect of cleaning protocols on the bond strength of resin cement to glass-ceramic. Ceramic specimens (N=120, n=12 per group) were etched with hydrofluoric acid and rinsed with water. After saliva contamination, specimens were cleaned as follows: water, 37% H3PO4, cleaning-paste (Ivoclean), or isopropanol. Non-contaminated specimens acted as the control. Resin cement was bonded to the specimens, and tested either after 24 h or x5000 thermocycling. Both the cleaning method (p=0.001) and the storage conditions (p=0...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569444/multiple-adhesive-layering-influence-on-dentin-bonding-and-permeability
#16
Edilausson Moreno Carvalho, Rodrigo Stanislawczuk, Thays Costa, Sandra Kiss Moura, Alessandro Loguercio, Jose Bauer
The aim was to evaluate the effect of the number of layers on the microtensile bond strength (μTBS), permeability and nanoleakage of an etch-and-rinse adhesive (Adper Single Bond 2). Different numbers of layers (1, 2 and 4) were applied on dentin susbstrate. Specimens were obtained and tested for μTBS. Stick-shaped samples were analysed by scanning electron microscope, to observe silver nitrate penetration. One-way ANOVA and Tukey tests were applied (α=0.05) for μTBS values. The fracture mode was evaluated under a stereomicroscope and a scanning electron microscope (SEM)...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28510377/retrospective-study-of-the-survival-and-patient-satisfaction-with-composite-dahl-restorations-in-the-management-of-localised-anterior-tooth-wear
#17
Ayman Aljawad, Jeremy Simon Rees
OBJECTIVE: This retrospective study was undertaken to evaluate the clinical performance of direct composite restorations placed at an increased vertical dimension to manage localised anterior tooth wear using the Dahl approach. SUBJECTS AND METHODS: Two hundred and ninety six restorations were placed at an increased OVD in 41 subjects with localized anterior Tooth Surface Loss (TSL) were included. Survival analysis was carried out at three levels, major failure only, minor failure only and all types of failure...
December 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28510376/one-piece-implant-retained-mandibular-overdentures-by-pre-fabricated-titanium-telescopic-attachments-and-frictional-varnish-a-two-year-prospective-study
#18
Shahram Namjoy Nik, Touraj Nejatian
Clinical efficiency of one-piece screw-type implants with telescopic were attachments evaluated in this study. Twenty-four patients received a mandibular implant-supported overdenture and maxillary complete denture. Ninety-six one-piece implants were inserted in the inter-foraminal area. Implants were immediately loaded with an implant-retained overdenture and telescopic attachments which had frictional retention elements. There was 0.25±0.24 mm, 0.32±0.25 mm, 0.43±0.30 mm, 0.61±0.30 mm and of bone resorption after 3, 6, 12 and 24 months, respectively...
December 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28510375/the-effect-of-irradiation-distance-on-light-transmittance-and-vickers-hardness-ratio-of-two-bulk-fill-resin-based-composites
#19
Zahra Almuallem, Sinead McDonnell, Antoniella Busuttil-Naudi, Ario Santini
The aims of this study were to assess the light energy transmission and Vickers hardness (VH) ratio of two bulk-fill resin-based composites (RBCs) (Tetric EvoCeram and Filtek) cured at different distances between the light curing unit's (LCU) tip and the surface of the restoration (T-S) using either a Bluephase G2, Bluephase® 'turbo tip' or Bluephase Style LCU. Samples were cured from the top at T-S distances of 2mm, 6mm and 10mm for 20 seconds. A MARC-Resin-Calibrator™ recorded the transmitted irradiance reaching the bottom of the sample, in real time...
December 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28510374/qualitative-beam-profiling-of-light-curing-units-for-resin-based-composites
#20
Thomas Haenel, Berenika Hausnerová, Johannes Steinhaus, Ing Bernhard Moeginger
This study investigates two technically simple methods to determine the irradiance distribution of light curing units that governs the performance of a visible-light curing resin-based composites. Insufficient light irradiation leads to under-cured composites with poor mechanical properties and elution of residual monomers. The unknown irradiance distribution and its effect on the final restoration are the main critical issues requiring highly sophisticated experimental equipment. The study shows that irradiance distributions of LCUs can easily be determined qualitatively with generally available equipment...
December 2016: European Journal of Prosthodontics and Restorative Dentistry
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