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https://www.readbyqxmd.com/read/28343670/comparison-of-porcelain-bond-strength-of-different-metal-frameworks-prepared-by-using-conventional-and-recently-introduced-fabrication-methods
#1
Necati Kaleli, Duygu Saraç
STATEMENT OF PROBLEM: Most studies evaluating dental laser sintering systems have focused on the marginal accuracy of the restorations. However, the bond strength at the metal-ceramic interface is another important factor that affects the survival of restorations, and currently, few studies focus on this aspect. PURPOSE: The purpose of this in vitro study was to compare the porcelain bond strength of cobalt-chromium (Co-Cr) metal frameworks prepared by using the conventional lost-wax technique, milling, direct metal laser sintering (DMLS), and laser cusing, a direct process powder-bed system...
March 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28337003/shade-of-resin-based-luting-agents-and-final-color-of-porcelain-veneers
#2
(no author information available yet)
All that is required is three shades of luting cement.
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28334055/the-effect-of-coded-healing-abutments-on-treatment-duration-and-clinical-outcome-a-randomized-controlled-clinical-trial-comparing-encode-and-conventional-impression-protocols
#3
Jaafar Abduo, Chen Chen, Eugene Le Breton, Alexandra Radu, Josephine Szeto, Roy Judge, Ivan Darby
PURPOSE: To compare the Encode impression protocol (Biomet 3i) with the conventional impression protocol in terms of treatment duration, clinical accuracy, and outcome up to the first postplacement review of single-implant crowns. MATERIALS AND METHODS: A total of 45 implants were included in this study. The implants were randomly allocated to the Encode group (23 implants) or the conventional group (22 implants). At the time of surgery, all implants received two-piece Encode healing abutments...
March 23, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28325569/transcatheter-aortic-valve-implantation-in-patients-with-advanced-chronic-kidney-disease
#4
Federico Conrotto, Stefano Salizzoni, Alessandro Andreis, Fabrizio D'Ascenzo, Augusto D'Onofrio, Marco Agrifoglio, Alaide Chieffo, Antonio Colombo, Filippo Rapetto, Francesco Santini, Giuseppe Tarantini, Davide Gabbieri, Carlo Savini, Sebastiano Immè, Flavio Ribichini, Orazio Valsecchi, Marco Aiello, Giovanni Lixi, Alessandro Iadanza, Esmeralda Pompei, Miroslava Stolcova, Diego Ornaghi, Alessandro Minati, Mauro Cassese, Gian Luca Martinelli, Pierluigi Sbarra, Andrea Agostinelli, Andrea Audo, Andrea Pieroni, Rosario Fiorilli, Gino Gerosa, Mauro Rinaldi, Fiorenzo Gaita
Advanced chronic kidney disease (CKD) is associated with poor outcomes in patients who underwent surgical aortic valve replacement, whereas its prognostic role in transcatheter aortic valve implantation (TAVI) remains unclear. This study aimed to investigate outcomes in patients with advanced CKD who underwent TAVI. A total of 1,904 consecutive patients who underwent balloon-expandable TAVI in 33 centers between 2007 and 2012 were enrolled in the Italian Transcatheter Balloon-Expandable Valve Implantation Registry...
February 10, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28322680/porcelain-heart-in-a-uremic-patient
#5
Hsiu-Chien Yang, Chang-Han Lo, Chun-Chi Chen, Chia-Chao Wu
No abstract text is available yet for this article.
March 2017: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/28319213/comparison-of-the-marginal-fit-of-cobalt-chromium-metal-ceramic-crowns-fabricated-by-cad-cam-techniques-and-conventional-methods-at-three-production-stages
#6
Francisco Real-Voltas, Elisabeth Romano-Cardozo, Oscar Figueras-Alvarez, Magi Brufau-de Barbera, Josep Cabratosa-Termes
PURPOSE: The aim of this study was to compare the marginal fit of cobalt-chromium crowns fabricated using conventional casts and computer-aided design/computer-assisted manufacturing (CAD/CAM) techniques at three stages of production: metal coping, after porcelain firing, and after cementation. MATERIALS AND METHODS: A total of 80 metal-ceramic crowns were fabricated using four different techniques: lost wax casting, milling, laser sintering, and milling of a presintered metal block...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28318645/comparison-of-survivability-of-staphylococcus-aureus-and-spores-of-aspergillus-niger-on-commonly-used-floor-materials
#7
Mridula Gupta, Michael Bisesi, Jiyoung Lee
BACKGROUND: The survivability of Staphylococcus aureus and spores of Aspergillus niger was compared on 5 common floor materials. METHODS: Floor materials were inoculated with a known concentration of S aureus and spores of A niger on day 0. Their survivability was measured on days, 2, 7, 14, and 28 by bulk rinsate method and enumerated using culture-based method. RESULTS: The difference in change of S aureus levels was statistically significant for all tested days (P < ...
March 17, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28280760/the-shear-bond-strength-of-porcelain-laminate-to-prepared-and-unprepared-anterior-teeth
#8
Ali Asghar Alavi, Zeinab Behroozi, Farid Nik Eghbal
STATEMENT OF THE PROBLEM: Porcelain laminate veneer is an esthetic restoration used as an alternative to full veneer crowns and requires minimal tooth preparation. In restoration with porcelain laminate veneers, both the longevity of the laminate and conservation of the sound tooth structure are imperative. PURPOSE: The present study aimed to investigate the shear bond strength of porcelain laminates to prepared- and unprepared- anterior teeth in order to compare their longevity and success rate...
March 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28280757/evaluation-of-the-effect-of-porcelain-laminate-thickness-on-degree-of-conversion-of-light-cure-and-dual-cure-resin-cements-using-ftir
#9
Maryam Hoorizad Ganjkar, Haleh Heshmat, Reza Hassan Ahangari
STATEMENT OF THE PROBLEM: Increasing the thickness of the veneering porcelain may affect the polymerization of resin cements. Incomplete polymerization of resin cements can lead to compromised quality of restoration and decrease the longevity of indirect restorations. PURPOSE: This study sought to assess the effect of IPS Empress porcelain thickness on the degree of conversion of light-cure and dual-cure resin cements using Fourier transform infrared spectroscopy...
March 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28279436/characterisation-of-nanovoiding-in-dental-porcelain-using-small-angle-neutron-scattering-and-transmission-electron-microscopy
#10
Alexander Lunt, Ann Terry, Siqi Ying, Nikolaos Baimpas, Tan Sui, Saurabh Kabra, Joe Kelleher, Stephen King, Neo Tee Khin, Alexander M Korsunsky
OBJECTIVES: Recent studies of the yttria partially stabilised zirconia-porcelain interface have revealed the presence of near-interface porcelain nanovoiding which reduces toughness and leads to component failure. One potential explanation for these nanoscale features is thermal creep which is induced by the combination of the residual stresses at the interface and sintering temperatures applied during manufacture. The present study provides improved understanding of this important phenomenon...
March 6, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28274033/an-in-vitro-comparative-stereomicroscopic-analysis-and-evaluation-of-marginal-accuracy-in-porcelain-fused-to-metal-copings-fabricated-in-two-different-finish-lines-using-variant-die-materials
#11
Priya L Vaswani, Pronob K Sanyal, Siddharth Y Gosavi, Abhijeet R Kore
INTRODUCTION: Limited published information is available about the influence of preparatory designs and die materials on marginal accuracy of porcelain fused to metal copings using recently developed die materials. AIM: To detect the influence of margin geometries and dimensional accuracy of contemporary die materials on vertical marginal gaps in Porcelain fused to metal coping using a Stereomicroscope (three dimensional analysis). MATERIALS AND METHOD: Two chrome cobalt alloy models of mandibular first molars prepared to have shoulder and deep chamfer finish lines were CAD-CAM milled...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28262271/the-impact-of-resin-coating-on-sub-critical-crack-extension-in-a-porcelain-laminate-veneer-material
#12
Xu Cao, Garry J P Fleming, Owen Addison
OBJECTIVES: Characterisation of the interaction between crack extension, crack stabilisation and stress/strain relaxation in the polymeric matrix, the interplay between stress corrosion cracking and the mechanical response of a resin-based luting adhesive within a surface defect population could extend PLV restoration longevity by optimising cementation protocols. The aim was to investigate the influence of stress corrosion cracking and the viscoelastic behaviour of a resin-based luting adhesive independently by controlling the environmental conditions operative during test specimen fabrication...
March 2, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28258661/polymerization-mode-of-self-adhesive-dual-cured-dental-resin-cements-light-cured-through-various-restorative-materials
#13
Ji Suk Shim, Jeong Kyung Kang, Nayansi Jha, Jae Jun Ryu
OBJECTIVE: The aim of this study was to investigate the polymerization mode of self-adhesive, dual-cured resin cements light-cured through overlying materials with different degree of translucency by measuring the degree of conversion (DC). MATERIALS AND METHODS: Three kinds of self-adhesive, dual-cured resin cements (G-CEM LinkAce(TM) , Maxcem Elite(TM) , and BisCem(®) ) were light-cured through three different restorative materials that included porcelain-fused metal (PFM), zirconia, and lithium disilicate...
March 4, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28258266/effect-of-newly-developed-resin-cements-and-thermocycling-on-the-strength-of-porcelain-laminate-veneers
#14
Fawaz I Alqahtani
AIM: The aim of this study was to determine the effect of different luting cements and accelerated artificial aging (AAA) in the fracture resistance of porcelain laminate veneers (PLVs). MATERIALS AND METHODS: A total of 80 disc-shaped specimens were prepared using computer-aided design/computer-aided milling technology from lithium disilicate glass-ceramic blocks. Specimens (0.5 mm thick, 10 mm diameter) were divided into eight groups of 10 specimens per group...
March 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28258265/comparison-of-different-post-systems-for-fracture-resistance-an-in-vitro-study
#15
Suneel V Vadavadagi, Kiran M Dhananjaya, Rashmi P Yadahalli, M Lahari, Shilpa R Shetty, B L Bhavana
INTRODUCTION: Endodontic restoration becomes a challenging task for the clinician because of severe loss of coronal tooth structure owing to trauma, caries, restorative, and endodontic procedures. The restoration of these teeth requires the use of a post and core as individual units or as abutment supports for fixed or removable restorations in a predictable long-term manner. AIM: To compare and assess the compressive bond strength of glass, quartz, and carbon fiber posts restored with porcelain-fused-to-metal (PFM) crown...
March 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28257219/management-of-a-malpositioned-implant-in-the-anterior-maxilla
#16
Catherine DeFuria, Hans-Peter Weber, Yukio Kudara, Panos Papaspyridakos
The surgical and prosthodontic management of patients with multiple missing teeth in the anterior maxilla can be challenging. The purpose of this clinical report is to illustrate the 2-year outcome after immediate implant placement in unintentional close proximity with the adjacent root. Following uneventful healing, the definitive implant rehabilitation was done with a modified monolithic zirconia framework and porcelain veneers bonded to the framework. The patient's satisfaction with the functional and esthetic outcomes remained high throughout the observation time, with no symptoms or biologic and technical complications...
March 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28243392/comparison-of-the-bond-strength-of-ceramics-to-co-cr-alloys-made-by-casting-and-selective-laser-melting
#17
Shirin Lawaf, Shahbaz Nasermostofi, Mahtasadat Afradeh, Arash Azizi
PURPOSE: Considering the importance of metal-ceramic bond, the present study aimed to compare the bond strength of ceramics to cobalt-chrome (Co-Cr) alloys made by casting and selective laser melting (SLM). MATERIALS AND METHODS: In this in-vitro experimental study, two sample groups were prepared, with one group comprising of 10 Co-Cr metal frameworks fabricated by SLM method and the other of 10 Co-Cr metal frameworks fabricated by lost wax cast method with the dimensions of 0...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28217840/a-comparison-of-us-and-japanese-dental-restorative-care-present-on-service-members-recovered-from-the-wwii-era
#18
Calvin Y Shiroma
The documentation of dental materials used in the USA during the WWII era is readily available, while references for the Japanese are minimal. It was therefore important to build a photographic database of Japanese restorative care which could be utilized as a comparison tool for the deployed odontologist. The dental restorative care of approximately 400 US and 100 Japanese sets of remains was evaluated. Both countries share many similar restorative techniques to include collared crowns, full-coverage restorations, cantilever bridge/pontics to close spaces; restorative materials such as amalgam, gold, and zinc phosphate (temporary) restorations; and removable prostheses...
February 20, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28216846/three-dimensional-finite-element-analysis-of-the-stress-distribution-pattern-in-a-mandibular-first-molar-tooth-restored-with-five-different-restorative-materials
#19
Kathleen Manuela D'souza, Meena Ajay Aras
INTRODUCTION: Badly broken or structurally compromised posterior teeth are frequently associated with crown/root fracture. Numerous restorative materials have been used to fabricate indirect full-coverage restorations for such teeth. This study aims to evaluate and compare the effect of restorative materials on the stress distribution pattern in a mandibular first molar tooth, under varying loading conditions and to compare the stress distribution pattern in five commonly used indirect restorative materials...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28216839/a-study-on-the-wear-of-enamel-caused-by-monolithic-zirconia-and-the-subsequent-phase-transformation-compared-to-two-other-ceramic-systems
#20
Amreen Rupawala, Smita I Musani, Pallavi Madanshetty, Ramandeep Dugal, Umang D Shah, Ektaa J Sheth
PURPOSE: The purpose of this in vitro research project was to evaluate and compare the wear behavior of human tooth enamel opposing monolithic zirconia and other different ceramic restorative materials and also to observe the tetragonal to monoclinic phase transformation in zirconia-based ceramics that may occur while simulating wear occurring at room temperature in a wet environment. MATERIALS AND METHODS: A total of sixty samples were prepared for this study. Fifteen discs of glazed zirconia, 15 discs of polished zirconia without glaze, 15 discs of metal ceramic, and 15 discs of lithium disilicate were fabricated...
January 2017: Journal of Indian Prosthodontic Society
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