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European Journal of Prosthodontics and Restorative Dentistry

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https://www.readbyqxmd.com/read/29517876/surveys-of-current-teaching-and-practice-for-impressions-for-complete-dentures
#1
N Hussain, H Jabbar, M Hayati, J Wu, T P Hyde
OBJECTIVES: The 3 objectives are to assess current preferences for impressions for complete dentures, audit practice and compare practice to current UK teaching. METHODS: Three surveys where undertaken; a survey of GDPs preferences, an audit of practice and a survey of teaching in UK dental schools. RESULTS: UK Universities advocate border moulded custom trays. In stated preferences, 99% of practitioners used custom trays for private practice; 67% for NHS work...
March 8, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29517875/survival-rates-and-complications-for-zirconia-based-fixed-dental-prostheses-in-a-period-up-to-10-years-a-systematic-review
#2
C Stefanescu, C Ionita, V Nechita, S Drafta, L Oancea, A Petre
AIMS: The purpose of this study was to methodically review the literature concerning the success and survival rates of zirconia fixed dental prostheses (FDPs). METHODS: A systematic search was conducted of MEDLINE, Elsevier and the Cochrane Library to identify relevant articles about zirconia FDPs. In order to obtain suitable articles, rigorous criteria were applied. The minimum follow-up period was five years. RESULTS: From a total of 986 articles identified in the first electronic search, only 10 matched the inclusion criteria...
March 8, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29469999/a-systematic-review-and-meta-analysis-of-baseline-ohip-edent-scores
#3
J M J Duale, Y A Patel, J Wu, T P Hyde
BACKGROUND: OHIP-EDENT is widely used in the literature to assess Oral-Health-Related-Quality-of-Life (OHRQoL) for edentulous patients. However the normal variance and mean of the baseline OHIP scores has not been reported. It would facilitate critical appraisal of studies if we had knowledge of the normal variation and mean of baseline OHIP-EDENT scores. An established figure for baseline OHIP-EDENT, obtained from a meta-analysis, would simplify comparisons of studies and quantify variations in initial OHRQoL of the trial participants...
March 1, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29469996/a-survey-exploring-the-experiences-attitudes-of-dental-implant-clinicians-in-the-management-of-peri-implantitis-within-the-united-kingdom
#4
G Kane, V Fang, S Simon, J Girdler, O Adeyinka, A Alhilou
Peri-implantitis remains one of the most challenging complications that could threaten the long-term survival of implants. The aim of this survey is to explore the experiences, attitudes and challenges that face clinicians in the management of peri-implantitis. A validated online questionnaire was emailed to implant clinicians in the United Kingdom. 72 clinicians responded to the questionnaire, all of whom face many challenges during the treatment of peri-implantitis, with 79% finding difficulties due to lack of treatment consensus and 78% finding treatment outcomes unpredictable...
March 1, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29182217/the-effect-of-surface-preparation-of-acrylic-teeth
#5
M Pispili, A Pissiotis, K Michalakis
PURPOSE: To investigate whether the chemical bond between acrylic teeth and heat polymerized PMMA can be altered by chemical and/or mechanical treatment. MATERIALS AND METHODS: One hundred fifty acrylic teeth were divided in groups of 10. Their ridge lap surface underwent mechanical and/or chemical treatments: 1) no treatment, 2) air-abrasion with Al₂O₃ particles, 3) acid etching with phosphoric acid, 4) application of composite resin bonding agent, 5) application of MMA and ethylmethylketone bonding agent, 6) PMMA monomer application...
December 1, 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29182216/adhesion-and-early-colonization-of-s-mutans-on-lithium-disilicate-reinforced-glass-ceramics-monolithic-zirconia-and-dual-cure-resin-cement
#6
L Viitaniemi, A Abdulmajeed, T Sulaiman, E Söderling, T Närhi
OBJECTIVE: Monolithic zirconia and glass ceramics are increasingly used in implant crowns. Limited data is available on bacterial adhesion and early biofilm formation on these materials. METHODS: Four different materials were investigated: (1) Lithium disilicate glass-ceramics (LDS), (2) Fully stabilized zirconia (FSZ), (3) Partially stabilized zirconia (PSZ), and (4) Dual curing cement (DCC). The materials' surfaces were characterized with spinning disc confocal microscopy and by water contact angle and surface free energy (SFE) measurements...
December 1, 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29182215/a-measurement-protocol-for-the-marginal-and-internal-fit-of-all-ceramic-crowns
#7
N Abdulhameed, J-F Roulet, C Chen, H Hussein
AIMS: To evaluate in vitro the influence of firing on marginal and internal fit of all-ceramic milled and pressed lithium-disilicate crowns. MATERIALS AND METHODS: One Standardized model with 1.6mm occlusal and 1.4mm axial reduction was used to fabricate 64 crowns. Using a factorial design, eight groups of lithium disilicate ceramics (n=8) using P=press, C=CAD/CAM, M=monolithic, O=coping, V=veneered, R=as produced: PMR, PMG, POR, PVG, CMR, CMG, COR, CVG. Crowns were produced and cemented on stone dies, then embedded in clear epoxy resin and sectioned into two plains...
December 1, 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29182214/an-investigation-into-the-trueness-and-precision-of-copy-denture-templates-produced-by-rapid-prototyping-and-conventional-means
#8
K Davda, C Osnes, S Dillon, J Wu, P Hyde, A Keeling
OBJECTIVE: To assess the trueness and precision of copy denture templates produced using traditional methods and 3D printing. MATERIAL AND METHODS: Six copies of a denture were made using: 1. Conventional technique with silicone putty in an impression tray (CT). 2. Conventional technique with no impression tray (CNT). 3. 3D scanning and printing (3D). Scan trueness and precision was investigated by scanning a denture six times and comparing five scans to the sixth...
December 1, 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29182213/the-effect-of-core-and-veneering-design-on-the-optical-properties-of-polyether-ether-ketone
#9
S Zeighami, S Mirmohammadrezaei, M Safi, S M Falahchai
This study aimed to evaluate the effect of core shade and core and veneering thickness on color parameters and translucency of polyether ether ketone (PEEK). Sixty PEEK discs (0.5 and 1 mm in thickness) with white and dentine shades were veneered with A2 shade indirect composite resin with 0.5, 1 and 1.5 mm thickness (n=5). Cores without the veneering material served as controls for translucency evaluation. Color parameters were measured by a spectroradiometer. Color difference (ΔE₀₀) and translucency parameters (TP) were computed...
December 1, 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29182212/a-randomised-controlled-trial-of-a-universal-bonding-agent-at-three-years-self-etch-vs-total-etch
#10
F J T Burke, R J Crisp, A J Cowan, L Raybould, P Redfearn, P Sands, O Thompson, V Ravaghi
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 64 nanofilled resin composite (Filtek Supreme XTE) restorations placed principally in loadbearing cavities using a Universal dentine bonding agent (Scotchbond Universal), in five UK dental practices by members of the UK-based practice-based research group, the PREP Panel. A split mouth design was used, comprising patients who required two restorations, with one of the restorations receiving a total etch approach using phosphoric acid and the other being placed using a self-etch approach...
December 1, 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28869368/3d-metal-printing-additive-manufacturing-technologies-for-frameworks-of-implant-borne-fixed-dental-prosthesis
#11
M Revilla León, I M Klemm, J García-Arranz, M Özcan
An edentulous patient was rehabilitated with maxillary metal-ceramic and mandibular metal-resin implant-supported fixed dental prosthesis (FDP). Metal frameworks of the FDPs were fabricated using 3D additive manufacturing technologies utilizing selective laser melting (SLM) and electron beam melting (EBM) processes. Both SLM and EBM technologies were employed in combination with computer numerical control (CNC) post-machining at the implant interface. This report highlights the technical and clinical protocol for fabrication of FDPs using SLM and EBM additive technologies...
September 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28869367/survival-of-direct-posterior-composites-with-and-without-a-bulk-fill-base
#12
C McGuirk, F Hussain, B J Millar
OBJECTIVES: Direct composite restorations are increasingly popular and a flowable bulk-fill base material (SDR, Dentsply) claims to minimise stress through a more flexible polymerisation process. This retrospective audit of restorations placed in general practice compares SDR based restorations with conventional composite restorations. METHODS: Restorations were all placed by one operator using a similar clinical technique and were audited as Group G, placed with a conventional layering composite (G-aenial, GC) and Group S which had a bulk-fill base of SDR (Dentsply) and then were covered with G-aenial (GC)...
September 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28869366/effect-of-distance-on-light-transmission-through-polymerized-resin-composite
#13
M K Aromaa, L V J Lassila, P K Vallittu
OBJECTIVE: Light transmittance of dental composites varies between products and shades, but also light curing units differ to each other in their irradiance and fiber optic structure of curing tip. The aim of this study was to investigate whether there is linear relationship between the distance of the curing tip to the resin composite and irradiance at lower surface of the resin composite. MATERIALS AND METHODS: Disks of 1 mm thickness (6mm diameter) were fabricated...
September 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28869365/influence-of-different-ceramic-systems-on-marginal-misfit
#14
S P Vargas, A C C Neves, R Vitti, M Amaral, M N Henrique, L R Silva-Concílio
OBJECTIVE: the aim of this study was to evaluate the marginal misfit at the interface between a ceramic coping and its abutment. METHODS: Twenty-four specimens were made with solid abutments. The specimens were divided into 3 groups according to the ceramic system (n = 8): Lava (zirconia), IPS e.max Press (lithium disilicate), and IPS Empress Esthetic (leucite). All copings were cemented with resin luting agent (RelyX U200) and the marginal misfit were evaluated at 3 different times: initial, after cementation, and after mechanical cycling using a linear measuring microscope (Measuring Microscope STM-Olympus) at a magnification of 40x...
September 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28869364/nanocryl-coating-of-pmma-complete-denture-base-materials-to-prevent-scratching
#15
Hawa M Fathi, Hajer A Benonn, Anthony Johnson
The surface of polymethylmethacrylate (PMMA) is vulnerable to indentation by hard objects that may contribute to abrade the material surface and subject it to wear. This phenomenon promotes an increase in the surface roughness leading to microbial colonisation which can endanger the general health of wearers and damage the intra-oral prosthesis. The aim of this study is to investigate the effect of three different nanocryl coating agents (Easy Glaze, G-Coat Plus and Formulation XP) on surface roughness and thickness of PMMA material after a simulating cleaning process utilizing an electric toothbrush and three different dentifrices (pastes and immersion)...
September 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28590097/five-year-clinical-evaluation-of-restorations-placed-in-a-low-shrinkage-stress-composite-in-uk-general-dental-practices
#16
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
#17
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
#18
COMPARATIVE STUDY
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
#19
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
#20
COMPARATIVE STUDY
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
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