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https://www.readbyqxmd.com/read/29763497/additively-manufactured-titanium-and-cobalt-chromium-implant-frameworks-fit-and-effect-of-ceramic-veneering
#1
Per Svanborg, Alf Eliasson, Victoria Stenport
PURPOSE: The purpose of this study was to evaluate the fit of additively manufactured cobalt-chromium and titanium and CNC-milled titanium frameworks before and after ceramic veneering. MATERIALS AND METHODS: Ten stone casts simulating an edentulous maxilla provided with six abutment analogs were produced. For each stone cast, one additively manufactured cobalt-chromium framework (AM CoCr) and one titanium framework (AM Ti) were fabricated. The fit was analyzed with a coordinate measuring machine in three dimensions (x, y, and z axes) using best-fit virtual matching of center point coordinates, before and after ceramic veneering...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29754090/hazard-potential-of-widespread-but-hidden-historic-offshore-heavy-metal-pb-zn-contamination-gulf-of-cadiz-spain
#2
Till J J Hanebuth, Mary Lee King, Isabel Mendes, Susana Lebreiro, Francisco J Lobo, Ferdinand K Oberle, Laura Antón, Paulo Alves Ferreira, Maria Isabel Reguera
Natural and human-induced seabed sediment disturbances affect wide areas of the global coastal ocean. These recurrent to chronic disturbances mobilize significant amounts of material, including substances that have the potential to significantly harm the environment once re-released. This very challenging issue is difficult to deal with if sub-surface contaminant concentrations are unknown. Based on the analysis of 11 new, up to 5-m long sediment cores taken offshore in the Gulf of Cadiz, the contamination history (using the trace elements lead and zinc) is well documented over major parts of the gulf...
May 10, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29750104/agenesis-of-all-permanent-maxillary-incisors-a-rare-clinical-case-with-an-interdisciplinary-solution
#3
Fernando-Cesar Torres, Claudio-Fróes de Freitas, Diego-Vianez Pereira, Tarcila Triviño, Acácio Fuziy, Fernando-Akio Maeda
Background: Clinical cases involving agenesis of all four maxillary incisors are rare, with no previous reports in the literature. Case report: The present case report describes an orthodontic treatment combined with esthetic dentistry in a 10-year-old girl with agenesis of all four permanent maxillary incisors, anterior crossbite, permanence of deciduous maxillary canines and transmigration of permanent maxillary canines into the region of the maxillary central incisors...
April 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29744210/a-strain-gauge-analysis-comparing-4-unit-veneered-zirconium-dioxide-implant-borne-fixed-dental-prosthesis-on-engaging-and-non-engaging-abutments-before-and-after-torque-application
#4
Alyssa Epprecht, Marco Zeltner, Goran Benic, Mutlu Özcan
This study quantified the strain development after inserting implant-borne fixed dental prosthesis (FDP) to various implant-abutment joints. Two bone-level implants (∅ = 4.1 mm, RC, SLA 10 mm, Ti, Straumann) were inserted in polyurethane models (N = 3) in the area of tooth nos 44 and 47. Four-unit veneered zirconium dioxide FDPs (n = 2) were fabricated, one of which was fixed on engaging (E; RC Variobase, ∅ = 4.5 mm, H = 3.5 mm) and the other on non-engaging (NE) abutments (RC Variobase, ∅ = 4...
February 2018: Clinical and Experimental Dental Research
https://www.readbyqxmd.com/read/29723313/a-five-year-retrospective-assay-of-implant-treatments-and-complications-in-private-practice-restorative-treatment-profiles-of-long-span-implant-supported-fixed-and-removable-dental-prostheses
#5
Vahed Parzham, Roy B Judge, Denise Bailey
PURPOSE: To describe the restorative treatment profiles of long-span (> three units), implant-supported dental prostheses (LIDPs) prescribed in 27 private practices in the state of Victoria, Australia, during the period from January 1, 2005, to December 31, 2009. The restorative treatment profiles of these prostheses refer to the framework/veneering materials, number of prosthetic units/supporting implants, location in the oral cavity, retention methods, and cantilever designs. LIDPs refer to implant-supported prostheses of fixed or removable design; namely, fixed partial dentures (IFPDs), fixed complete dentures (IFCDs), removable partial dentures (IRPDs), and complete overdentures (IODs)...
May 2018: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29721230/role-of-coefficient-of-thermal-expansion-on-bond-strength-of-ceramic-veneered-yttrium-stabilized-zirconia
#6
Niwut Juntavee, Chollada Dangsuwan
Background: Incompatible coefficient of thermal expansion (CTE) is supposed to be a reason for chipping of ceramic veneered zirconia. This study evaluates the effect of veneering ceramic at varied CTE on bond strength to zirconia. Material and Methods: Zirconia disks (Z, Ø 10 mm, 1.0 mm thickness) were prepared from Y-TZP (Cercon®) and sintered at 1350°C for 6 hours. All zirconia disks were veneered with ceramics ((Ø 7.0 mm, 1.5 mm thickness) with varied CTE including VITADur® alpha (VDα), VITAVM®7 (VM7), VITAVM®9 (VM9), Cercon® ceramkiss (CCK), IPSe...
March 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29714706/conservative-approach-for-molar-incisor-hypomineralization-a-case-report-and-7-year-follow-up
#7
Camila Porto Pessôa, Luciana Pion, Alessandra Reyes, Ronilza Matos, Cássio Fornazari Alencar, Tatiane Fernandes Novaes, Mariana Minatel Braga
Molar-incisor hypomineralization (MIH) can result in minor injuries or major structural loss, especially in incisors and molars. Patients with MIH seek dental treatment early, usually in childhood. Choosing the best treatment option during this stage can be a challenge. Because these patients still present a mixed dentition, the use of prosthetic appliances is not usually the best option. This case report with a 7-year follow-up presents an overview of a conservative approach for the restoration of teeth affected by MIH...
May 2018: General Dentistry
https://www.readbyqxmd.com/read/29713430/repair-bond-strength-of-resin-composite-to-bilayer-dental-ceramics
#8
Ayse Seda Ataol, Gulfem Ergun
PURPOSE: The purpose of this study was to investigate the effect of various surface treatments (ST) on the shear bond strength of resin composite to three bilayer dental ceramics made by CAD/CAM and two veneering ceramics. MATERIALS AND METHODS: Three different bilayer dental ceramics and two different veneering ceramics were used (Group A: IPS e.max CAD+IPS e.max Ceram; Group B: IPS e.max ZirCAD+IPS e.max Ceram, Group C: Vita Suprinity+Vita VM11; Group D: IPS e...
April 2018: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29705528/influence-of-ageing-on-glass-and-resin-bonding-of-dental-glass-ceramic-veneer-adhesion-to-zirconia-a-fracture-mechanics-analysis-and-interpretation
#9
M V Swain, C Gee, K-C Li
Adhesion plays a major role in the bonding of dental materials. In this study the adhesion of two glass-ceramic systems (IPS e.max and VITABLOCS) to a zirconia sintered substrate using a glass (for IPS e.max) and resin (VITABLOCS) before and after exposure to ageing for 14 days in distilled water at 37°C are compared using two interfacial fracture mechanics tests, the 3 point bend Schwickerath (1,2) and 4 point bend [3] approaches. Both tests result in stable crack extension from which the strain energy release rate (G, N/m or J/m2 ) can be determined...
April 26, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29700452/diy-dentistry-clip-on-veneer
#10
S Jadun, L Monaghan, J Darcey
No abstract text is available yet for this article.
April 27, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29691567/-effects-of-ultra-thin-porcelain-veneers-in-repair-of-anterior-teeth-gaps
#11
Yu-Rui Hong, Xiao-Ling Xie, Wei-Yan Luo
PURPOSE: To evaluate the clinical effect of ultra thin porcelain veneers in the repair of the anterior teeth gaps. METHODS: The anterior teeth gaps in 42 patients were repaired from 2013 to 2014 with ultra thin porcelain veneers ,the clinical results of 145 porcelain veneers were evaluated at 6,12,24 and 36 months after repair. RESULTS: Thirty six months after repair, 145 ultra thin porcelain veneers were successful retained, 99.3% veneers were found to be intact...
December 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29678585/fracture-load-of-metal-ceramic-monolithic-and-bi-layered-zirconia-based-posterior-fixed-dental-prostheses-after-thermo-mechanical-cycling
#12
Carlos López-Suárez, Raquel Castillo-Oyagüe, Verónica Rodríguez-Alonso, Christopher D Lynch, María-Jesús Suárez-García
OBJECTIVES: This study aims to evaluate the fracture load of differently fabricated 3-unit posterior fixed dental prostheses (FDPs) with an intermediate pontic. METHODS: Fifty sets of two stainless-steel abutments were randomly assigned to five groups (n = 10 each) depending on the material and technique used for manufacturing the FDPs: (1) Metal-ceramic (MC, control); (2) Lava Zirconia (LZ, bi-layered); (3) Lava Plus (LM, monolithic); (4) VITA In-Ceram YZ (YZ, bi-layered); and (5) IPS e-max ZirCAD (ZZ, bi-layered)...
April 17, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29674734/convergence-angles-for-full-veneer-crown-preparation-completed-by-undergraduate-students-in-a-dental-teaching-hospital
#13
S S Virdee, L D Addy, P J Milward, C D Lynch
No abstract text is available yet for this article.
April 20, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29673708/fractographic-analyses-of-failed-one-piece-zirconia-implant-restorations
#14
Marit Øilo, Dwayne Arola
BACKGROUND: Promising results of initial clinical trials with yttria-stabilized zirconia have led to more extensive use of zirconia in dental implant superstructures. The applications have extended to abutments and complex individually designed crown-abutment one-piece structures. Little is known about their clinical success and the primary cause of failures. PURPOSE: The aim of this study was to identify the cause of fracture of retrieved implant-retained one-piece prostheses that failed during clinical use...
April 16, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29670735/microleakage-of-porcelain-laminate-veneers-cemented-with-different-bonding-techniques
#15
Satheesh B Haralur
Background: Porcelain laminate veneers (PLV) are continued to be popular in modern dental practice due to its high aesthetic outcome and conservative tooth preparation. The composite resins are commonly used as luting agents for cementation of PLV. Polymerisation shrinkage induced marginal gap and interfacial leakage is the persistent limitation with the resin luting cements. The objective of the study was to assess the effect of various dentin bonding techniques on the microleakage after accelerated ageing in porcelain laminate veneres...
February 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29670713/shear-bond-strength-of-ceramic-fused-to-cad-cam-milled-alloys
#16
Niwut Juntavee, San-Eak Oeng
Background: This study evaluated the metal ceramic bond strength of cast Ni-Cr, cast Co-Cr, sintered Co-Cr and milled Co-Cr alloys to ceramic through two application procedures including the ceramic layering technique and ceramic pressed-on technique. Material and Methods: Ceramic materials (Ø 8 mm, 1.5 mm thickness) were veneered by either the layering or pressed-on technique to cast Ni-Cr, cast Co-Cr, sintered Co-Cr and hard milled Co-Cr alloy disc (12 × 12 × 0...
January 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29665177/prosthodontic-complications-of-metal-ceramic-and-all-ceramic-complete-arch-fixed-implant-prostheses-with-minimum-5-years-mean-follow-up-period-a-systematic-review-and-meta-analysis
#17
REVIEW
Chi Kin Kenneth Wong, Unnati Narvekar, Haralampos Petridis
PURPOSE: The purpose of this systematic review and meta-analysis was to review and analyze the prosthodontic complications, survival, and success of metal-ceramic (MC) and all-ceramic (AC) complete-arch fixed implant dental prostheses (CFIDPs) with a minimum mean follow-up period of 5 years. METHODS: A structured literature search was conducted using 3 electronic databases (MEDLINE, the Cochrane Library, Web of Science) for clinical studies reporting on prosthodontic complications of metal-ceramic and/or all-ceramic CFIDPs published between 2000 and 2016...
April 17, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29657518/influence-of-light-activation-of-simplified-adhesives-on-the-shear-bond-strength-of-resin-cements-to-a-leucite-reinforced-ceramic
#18
Adilson Yoshio Furuse, Cassiana Koch Scotti, Alfredo Llerena-Icochea, Juliana Fraga Soares Bombonatti, Gisele Aihara Haragushiku, Carla Castiglia Gonzaga
Objective: This study aims to evaluate the influence of the light activation of simplified adhesives on the shear bond strength of resin cements to a glass-ceramic. Three factors were evaluated: (1) cement in two levels (light cured and dual cured); (2) adhesive in two levels (Single Bond 2 and Single Bond Universal), and (3) light activation in two levels (yes or no). Materials and Methods: Thirty-two 1-mm thick slices of a leucite-reinforced glass-ceramic (IPS Empress CAD) were divided into eight groups according to adhesive (Single Bond 2 or Single Bond Universal), cement (AllCem Veneer or AllCem), and light activation of the adhesive before application of the cement (yes or no)...
January 2018: European Journal of Dentistry
https://www.readbyqxmd.com/read/29652016/effect-of-inadequate-ferrule-segment-location-on-fracture-resistance-of-endodontically-treated-teeth
#19
Satheesh B Haralur, Ahmed Fatis Alalyani, Mohammad Ali Almutiq, Abdulrahman Ahmed Alfaifi, Amer Abdullah Al-Shehri
Introduction: The circumferential 2 mm ferrule during the fabrication of the crown is strongly advocated for the long-term clinical success. During the routine clinical practice, the dentist encounters the endodontically treated tooth (ETT) with inadequacy of the ferrule in some segment due to caries, abrasion, and erosions. The aim of this in vitro study was to investigate the consequence of inadequate segmental ferrule location on fracture strength of the root canal-treated anterior and posterior teeth...
March 2018: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/29628778/effect-of-different-semimonolithic-designs-on-fracture-resistance-and-fracture-mode-of-translucent-and-high-translucent-zirconia-crowns
#20
Fahad Bakitian, Przemek Seweryniak, Evaggelia Papia, Christel Larsson, Per Vult von Steyern
Purpose: The aim of this study was to describe different designs of semimonolithic crowns made of translucent and high-translucent zirconia materials and to evaluate the effect on fracture resistance and fracture mode. Methods: One hundred crowns with different designs were produced and divided into five groups (n=20): monolithic (M), partially veneered monolithic (semimonolithic) with 0.3 mm buccal veneer (SM0.3), semimonolithic with 0.5 mm buccal veneer (SM0.5), semimonolithic with 0...
2018: Clinical, Cosmetic and Investigational Dentistry
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