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European Journal of Prosthodontics and Restorative Dentistry

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https://www.readbyqxmd.com/read/30406976/shade-stability-of-polymer-infiltrated-and-resin-nano-ceramic-crowns-after-dynamic-chewing-simulation
#1
M Schürmann, C Olms
OBJECTIVE: Investigation of the shade stability of polymer-infiltrated and resin nano ceramic crowns before and after artificial aging. METHOD: 40 identical crowns of each of the materials VITA Enamic (VE) and Lava Ultimate (LU) were manufactured. Half of the crowns went through a dynamic chewing simulation (CS) with thermocycling. Material subgroups: 1. VE, 2. VE/CS, 3. LU, 4. LU/CS (each n=20). These were divided into 4 groups (n=5) and distributed in usual stain solutions...
November 6, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30398816/clinical-evaluation-of-all-ceramic-zirconia-framework-resin-bonded-bridges
#2
S Shahdad, M J Cattell, J Cano-Ruiz, E Gamble, A Gambôa
OBJECTIVE: To evaluate the clinical longevity of 58 adhesively bonded single unit yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramic Resin Bonded Bridges (RBB). MATERIALS AND METHODS: Twenty six consecutive patients with at least one congenitally missing tooth in the maxilla or mandible were provided with 58 single unit Y-TZP RBBs. The cantilever RBBs were designed and milled using a CAD-CAM system to produce frameworks which were veneered using a glass-ceramic material and cemented with a self-etching dual-cure resin cement...
November 6, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30398317/accidental-ingestion-of-an-implant-screwdriver-a-case-report-and-literature-review
#3
B El Wazani, P Nixon, C J Butterworth
Head and neck oncology patients are high risk for ingestion or aspiration of dental instruments during treatment, due to altered anatomy and sensation. This article describes a case report of accidental ingestion of an implant screwdriver during the prosthetic phase of oral rehabilitation of a 79 year old oncology patient. The management protocol is described which included referral to the medical Accident and Emergency department, where the object was safely removed from the stomach via endoscopy. A review of similar cases of ingestion/inhalation in the literature suggests implant screwdrivers should be retrieved as safe passage through the gastrointestinal system is not assured...
November 6, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30398316/prevalence-and-factors-associated-with-the-use-of-denture-adhesives-by-older-complete-denture-wearers
#4
A E Kossioni
This study investigated the prevalence and the factors affecting the use of denture adhesives (DA) by older complete denture wearers. One hundred patients were interviewed and clinically examined for dentures' retention, stability and occlusion. A total of 31% used DA on a regular basis or sometimes; 14% used DA on both dentures, 19% on the maxillary denture and 26% on the mandibular one. DA use on the maxillary denture was significantly associated with younger age (p=0.026) and lower frequency of dentures' use (p⟨0...
November 6, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30307720/mini-dental-implants-in-the-management-of-the-atrophic-maxilla-and-mandible-a-new-implant-design-and-preliminary-results
#5
C W Barclay, S Jawad, E Foster
Although the edentulous population in the UK is falling, those that are rendered edentulous are becoming edentate later in life and with significantly resorbed ridges. This creates a challenge because the management of such patients and their ability to adapt to new dentures is impaired later in life. Despite widespread endorsement of two implants to retain lower complete dentures, the inability to comply has resulted in elderly patients with compromised ability to function and unable to eat a healthy diet...
October 11, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30152958/the-effect-of-try-in-paste-and-resin-cement-shade-on-colour-properties-of-dental-veneers
#6
N Alghazali, M Moaleem, S Alamri, A A Aldosari, A Preston, P Smith, F Jarad
OBJECTIVES: The purpose of this study was to investigate how different shades of try-in pastes, uncured and cured resin cements affect the overall colour of porcelain veneer restorations. METHODS: A total of 90 porcelain veneers of shade Vita 1M1 VM7 and 0.6 mm thick were applied to bovine teeth using 3 shades of resin cement and their try-in paste produced by 3 manufacturers. RESULTS: Colour differences produced between the try-in pastes and the corresponding shades of cured resin cements ranged from (ΔE* 1...
August 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30152957/comparative-evaluation-of-surface-defects-in-single-file-rotary-systems-before-and-after-instrumentation-in-curved-root-canals
#7
COMPARATIVE STUDY
T P Purayil, N V Ballal, K Ginjupalli
This study aims to evaluate the surface defects and efficiency of two single file rotary systems with different surface treatments in curved root canal instrumentation. A total of 160 root canals were randomly divided into two groups and were subjected to root canal instrumentation with electropolished surface rotary file (Group 1) and with EDM surface treated rotary file (Group 2). All the files were then subjected to SEM analysis to evaluate the surface defects prior to the root canal instrumentation,after 5 uses and 8 uses inside the root canal...
August 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30085483/effect-of-zirconia-pigmentation-on-translucency
#8
I Gomes, L P Lopes, M Fonseca, J Portugal
PURPOSE: the aim of this study was to investigate the effect of shading on translucency and mean grain size of three Zirconia systems (Lava Frame, Ice Zirkon Translucent and Prettau Zirkon). MATERIALS AND METHODS: specimens pigmented in A1, A4 and a non-pigmented specimen was evaluated with Scanning Electron Microscopy and spectrophotometery. RESULTS: the transmittance ranged between 0.18 and 0.52, in Ice Zirkon Translucent A4 and Prettau Zircon non-pigmented, respectively...
August 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30063306/effect-of-bioactive-composites-on-microhardness-of-enamel-exposed-to-carious-challenge
#9
M F C Pinto, Y Alania, L C Natale, A C Magalhães, R R Braga
This study verified if experimental composites containing calcium phosphate nanoparticles exert a protective effect against enamel demineralization. Three experimental resin-based composites containing 60 vol% of fillers were manipulated. Filler phase was constituted by silanized barium glass and 0%, 10% or 20% (by volume) of dicalcium phosphate dihydrate (DPCD) nanoparticles functionalized with the monomer triethylene glycol dimethacrylate (TEGDMA). Cavities (10 x 2 x 2 mm) were prepared in bovine enamel and restored using one of the experimental materials (n=10)...
August 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30063305/clinical-evaluation-of-sonic-activated-high-viscosity-bulk-fill-nanohybrid-resin-composite-restorations-in-class-ii-cavities-a-prospective-clinical-study-up-to-2-years
#10
T T Akalιn, F O Bozkurt, M Kusdemir, A Özsoy, M Özcan
This study evaluated the clinical performance of a bulk-fill resin composite in class II cavities for up to 2 years. Class II restorations (N=111) were made using a nanohybrid bulk-fill resin composite (SonicFill, Kerr Corp.) and evaluated following 1 week after placement, at 6 months, and thereafter annually up to 2 years using the United States Public Health Service (USPHS) criteria. The changes were analyzed using the McNemar test and the Kaplan-Meier method. No secondary caries was observed until the final recall...
August 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29989757/accuracy-of-intraoral-scanners-a-systematic-review-of-influencing-factors
#11
REVIEW
J Abduo, M Elseyoufi
Digital impressions by intraoral scanning (IOS) have become an increasingly popular alternative to conventional impressions. This systematic review aimed to evaluate the accuracy of the available IOS systems for dental impression, and identify the influencing factors on accuracy. The literature search was completed to retrieve all the studies that investigated the IOS accuracy when used to scan teeth. A total of 2305 studies were initially obtained. After applying the inclusion criteria, 32 studies were suitable for the analysis...
August 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/30130003/the-effects-of-different-spectrophotometric-modes-on-colour-measurement-of-resin-composite-and-porcelain-materials
#12
N Alghazali, A Preston, M Moaleem, F Jarad, A A Aldosary, P Smith
OBJECTIVES: To investigate the influence of a number of controlled modes on the spectrophotometric analysis of the colour of resin composite and porcelain materials. METHODS: A total of 20 samples of commercially available resin composite, and 20 samples of commercially available porcelain materials in four different shades were produced (five samples for each shade). Colour was measured using a spectrophotometer (CM2600-d, Minolta Konica) set with different colour measuring modes namely, small aperture size (SAV) or large aperture size (MAV); specular component included (SCI), or excluded (SCE); 0% (UV-) or 100% UV illumination (UV+)...
August 20, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29797848/prosthetic-rehabilitation-with-implant-supported-mandibular-overdenture-after-partial-glossectomy-and-radiation-therapy-a-case-report
#13
E Rissa, T Kurki, J Laine, T Närhi
Implant-supported overdenture is a well-established treatment option for many patients who have functional problems with conventional dentures. It may be primary choice for patients with altered jaw anatomy, neuromuscular disorders, pronounced gag reflex, severe residual ridge resorption and oral tissue defects. In this article we describe a case report, where tongue cancer patients occlusion was rehabilitated with an implantretained overdenture. In 2001 patient was operated for squamous cell carcinoma on the left side of the tongue...
May 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29797847/a-review-on-translucent-zirconia
#14
REVIEW
S Ghodsi, Z Jafarian
INTRODUCTION: Zirconia is suggested in many clinical situations due to acceptable biocompatibility, lower price compared with gold restorations, and better appearance than traditional metal ceramic restorations. New translucent monolithic zirconia has been developed to merge strength with improved tooth-colour matching. This work aims to review relevant articles on new translucent zirconia restorative materials. METHODS: The published articles on translucent zirconia were searched through PubMed, Medline, Google scholar, and indexed journals using the following keywords: translucent zirconia, transparent zirconia, and tooth colored zirconia...
May 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29722937/a-novel-methodology-to-validate-the-accuracy-of-extraoral-dental-scanners-and-digital-articulation-systems
#15
A Ellakwa, S Elnajar, D Littlefair, G Sara
PURPOSE: The aim of the current study is to develop a novel method to investigate the accuracy of 3D scanners and digital articulation systems. MATERIALS AND METHODS: An upper and a lower poured stone model were created by taking impression of fully dentate male (fifty years old) participant. Titanium spheres were added to the models to allow for an easily recognisable geometric shape for measurement after scanning and digital articulation. Measurements were obtained using a Coordinate Measuring Machine to record volumetric error, articulation error and clinical effect error...
May 30, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29517876/surveys-of-current-teaching-and-practice-for-impressions-for-complete-dentures
#16
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...
May 30, 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
#17
REVIEW
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...
May 30, 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
#18
REVIEW
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/29469998/the-effect-of-complete-denture-occlusion-on-function-and-patient-quality-of-life-systematic-review
#19
REVIEW
J Patel, C Granger, L Morrow
Edentulism presents an ongoing challenge for prosthodontic dentistry. Many aspects of complete denture construction lack contemporary evidence. One such aspect is denture occlusion. Balanced occlusion (BO) has become the prevailing occlusal scheme. It has been suggested that canine guidance (CG) is unsuitable for complete denture occlusion due to an increased risk for tipping of the prostheses. However it may be indicated in patients with minimal alveolus resorption. There has been limited evidence suggesting the superiority of either occlusal scheme over another...
March 1, 2018: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/29469997/the-influence-of-nitrile-gloves-on-the-setting-behavior-of-polyvinyl-siloxane-putty-impression-materials
#20
COMPARATIVE STUDY
A J Delgado, S P Amaya-Pajares, Y Su, L Behar-Horenstein, T E Donovan
OBJECTIVE: The purpose of this study was to assess the gelation and polymerization time of three polyvinyl siloxane (PVS) putty materials and to determine if those times were affected by nitrile gloves under different conditions. MATERIALS AND METHODS: Ten specimens (n=10) were obtained for each PVS putty material (Express STD, 3M ESPE; Extrude Xtra, Kerr and Exafast, GC) and tested under different conditions (gloves washed, gloves unwashed and hands contaminated)...
March 1, 2018: European Journal of Prosthodontics and Restorative Dentistry
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