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Journal of Prosthetic Dentistry

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https://www.readbyqxmd.com/read/29100605/academy-of-prosthodontics-centennial-the-educational-roots-of-our-specialty
#1
EDITORIAL
Stephen D Campbell, Clark M Stanford, Cortino Sukotjo, John R Agar, Charles Goodacre
No abstract text is available yet for this article.
October 31, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29042117/restoring-masticatory-function-in-a-patient-with-severe-microstomia-using-rapid-prototyped-mesh-and-a-custom-made-hinge-and-swing-lock-prosthesis
#2
Ibrahim Tulunoglu, Meng Huan Lee, Mohammed Louay Taifur, Ozlem Tulunoglu
This clinical report describes the use of rapid prototyped mesh in a complete swing-lock prosthesis to restore masticatory function in an edentulous patient with severe microstomia and perioral scar tissue after an industrial hot tar accident.
October 14, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29042116/marginal-discrepancy-dimensions-of-single-unit-metal-crowns-fabricated-by-using-cad-cam-milled-acrylate-resin-polymer-blocks-or-a-conventional-waxing-technique
#3
David Lalande, Jeffrey A Hodd, John S Brousseau, Van Ramos, Daniel Dunham, Frederick Rueggeberg
STATEMENT OF PROBLEM: Because crowns with open margins are a well-known problem and can lead to complications, it is important to assess the accuracy of margins resulting from the use of a new technique. Currently, data regarding the marginal fit of computer-aided design and computer-aided manufacturing (CAD-CAM) technology to fabricate a complete gold crown (CGC) from a castable acrylate resin polymer block are lacking. PURPOSE: The purpose of this in vitro study was to compare marginal discrepancy widths of CGCs fabricated by using either conventional hand waxing or acrylate resin polymer blocks generated by using CAD-CAM technology...
October 14, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29042115/effect-of-thickness-and-surface-modifications-on-flexural-strength-of-monolithic-zirconia
#4
Fusun Ozer, Andrew Naden, Volkan Turp, Francis Mante, Deniz Sen, Markus B Blatz
STATEMENT OF PROBLEM: A recommended minimum thickness for monolithic zirconia restorations has not been reported. Assessing a proper thickness that has the necessary load-bearing capacity but also conserves dental hard tissues is essential. PURPOSE: The purpose of this in vitro study was to evaluate the effect of thickness and surface modifications on monolithic zirconia after simulated masticatory stresses. MATERIAL AND METHODS: Monolithic zirconia disks (10 mm in diameter) were fabricated with 1...
October 14, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29042114/extending-the-service-life-of-existing-dental-restorations-with-esthetic-and-functional-limitations
#5
Malin Strasding, Vincent Fehmer, Bjarni E Pjetursson, Irena Sailer
Adhesive cementation is a useful procedure not only for cementing restorations onto teeth but also for attaching new ceramic restorations to existing restorations to improve their esthetics and/or function. This clinical report presents a technique for modifying an existing nonsatisfactory implant-supported fixed dental prosthesis by means of adhesively cemented veneers and onlays bonded to the pre-existing metal-ceramic surface with resin cement. This modification may avoid the replacement of the fixed dental prosthesis, reducing both treatment costs and time while fulfilling the patient's demands...
October 14, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969920/evaluating-ceramic-crown-margins-with-digital-radiography
#6
William Maxwell Wahle, Radi Masri, Carl Driscoll, Elaine Romberg
STATEMENT OF PROBLEM: Radiographs aid in clinically determining crown fit, specifically interproximal margins where tactile and visual methods may be limited. However, investigations of the utility of digital radiographs as a tool for evaluating the marginal openings of ceramic crowns are lacking. PURPOSE: The purpose of this in vitro study was to assess whether marginal adaptation for ceramic crowns and for metal-ceramic crowns with a metal collar can be identified with digital radiographs...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969919/a-clinical-technique-for-virtual-articulator-mounting-with-natural-head-position-by-using-calibrated-stereophotogrammetry
#7
Walter Y H Lam, Richard T C Hsung, Winnie W S Choi, Henry W K Luk, Leo Y Y Cheng, Edmond H N Pow
Accurate articulator-mounted casts are essential for occlusion analysis and for fabrication of dental prostheses. Although the axis orbital plane has been commonly used as the reference horizontal plane, some clinicians prefer to register the horizontal plane with a spirit level when the patient is in the natural head position (NHP) to avoid anatomic landmark variations. This article presents a digital workflow for registering the patient's horizontal plane in NHP on a virtual articulator. An orientation reference board is used to calibrate a stereophotogrammetry device and a 3-dimensional facial photograph with the patient in NHP...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969918/marginal-and-internal-fit-of-pressed-lithium-disilicate-inlays-fabricated-with-milling-3d-printing-and-conventional-technologies
#8
Foudda R Homsy, Mutlu Özcan, Marwan Khoury, Zeina A K Majzoub
STATEMENT OF PROBLEM: The subtractive and additive computer-aided design and computer-aided manufacturing (CAD-CAM) of lithium disilicate partial coverage restorations is poorly documented. PURPOSE: The purpose of this in vitro study was to compare the marginal and internal fit accuracy of lithium disilicate glass-ceramic inlays fabricated with conventional, milled, and 3-dimensional (3D) printed wax patterns. MATERIAL AND METHODS: A dentoform mandibular first molar was prepared for a mesio-occlusal ceramic inlay...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969917/influence-of-spark-erosion-on-the-fit-of-screw-retained-co-cr-fixed-complete-denture-frameworks-veneered-with-different-materials
#9
Anna Gabriella Camacho Presotto, Luciana Valadares Oliveira, Marina Xavier Pisani, Valentim Adelino Ricardo Barão, Marcelo Ferraz Mesquita
STATEMENT OF PROBLEM: Spark erosion is a fit corrective technology that can be used even after the veneering material has been applied. The framework does not require sectioning, thus preserving its mechanical resistance. However, the spark erosion effect on veneered Co-Cr fixed complete denture (FCD) frameworks has not been investigated. PURPOSE: The purpose of this in vitro study was to evaluate whether spark erosion is effective in improving marginal fit on screw-retained Co-Cr FCD frameworks veneered with different materials...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969916/clinical-assessment-of-fractured-implant-abutment-screws-the-bernese-silicone-replica-technique
#10
Kensuke Igarashi, Kelvin I Afrashtehfar
Fractured implant abutment screws can be retrieved with repair or rescue devices. However, whether the screw was completely retrieved or the inner implant body was damaged may be uncertain. A silicone replica technique was recently implemented in Bern and may be the most predictable method available at the moment for clinically assessing the internal implant body. This technique is straightforward and precise and may help dentists determine the internal implant condition when managing a fractured screw.
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969915/accuracy-of-digitally-fabricated-trial-dentures
#11
Timea Wimmer, Marlis Eichberger, Nina Lümkemann, Bogna Stawarczyk
STATEMENT OF PROBLEM: Information about the accuracy of digital computer-aided design and computer-aided manufacturing (CAD-CAM) complete dentures is scarce. PURPOSE: The purpose of this in vitro study was to assess the reproducibility of the occlusion of wax dentures fabricated with digital steps and the contraction behavior of wax trial dentures processed with combined conventional-digital steps. These were compared with those fabricated completely conventionally in terms of storage duration...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969914/an-up-to-50-year-follow-up-of-crown-and-veneer-survival-in-a-dental-practice
#12
Ryan C Olley, Manoharan Andiappan, Peter Frost
STATEMENT OF PROBLEM: Indirect restorations are an important treatment in dental practice, but long-term survival studies are lacking. PURPOSE: The purpose of this retrospective study was to report on the outcome of indirect restorations, which were followed up annually for up to 50 years in a dental practice. MATERIAL AND METHODS: A retrospective survival study was undertaken at a mixed National Health Service (NHS)/private dental practice in London, UK...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965682/effect-of-brushing-and-thermocycling-on-the-shade-and-surface-roughness-of-cad-cam-ceramic-restorations
#13
Judy Chia-Chun Yuan, Valentim Adelino Ricardo Barão, Alvin G Wee, Maria F Alfaro, Fatemeh S Afshari, Cortino Sukotjo
STATEMENT OF PROBLEM: The effects of toothbrushing (B) and thermocycling (TC) on the surface texture of different materials with various fabrication processes have been investigated. However, studies of computer-aided design and computer-aided manufacturing (CAD-CAM) ceramic restorations are limited. PURPOSE: The purpose of this in vitro study was to evaluate the effect of B and TC on the color stability and surface roughness of extrinsically characterized and glazed CAD-CAM ceramic restorations...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965679/integrating-hinge-axis-approximation-and-the-virtual-facial-simulation-of-prosthetic-outcomes-for-treatment-with-cad-cam-immediate-dentures-a-clinical-report-of-a-patient-with-microstomia
#14
Katelyn M Kuric, Bryan T Harris, Dean Morton, Bruno Azevedo, Wei-Shao Lin
This clinical report describes a digital workflow using extraoral digital photographs and volumetric datasets from cone beam computed tomography (CBCT) imaging to create a 3-dimensional (3D), virtual patient with photorealistic appearance. In a patient with microstomia, hinge axis approximation, diagnostic casts simulating postextraction alveolar ridge profile, and facial simulation of prosthetic treatment outcome were completed in a 3D, virtual environment. The approach facilitated the diagnosis, communication, and patient acceptance of the treatment of maxillary and mandibular computer-aided design and computer-aided manufacturing (CAD-CAM) of immediate dentures at increased occlusal vertical dimension...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965678/evaluation-of-fracture-resistance-of-inlay-retained-fixed-partial-dentures-fabricated-with-different-monolithic-zirconia-materials
#15
Hilal Siriner Gumus, Nilufer Tulin Polat, Guler Yildirim
STATEMENT OF PROBLEM: Data are lacking on the fracture resistance of monolithic zirconia inlay-retained fixed partial dentures as a conservative treatment for a single missing tooth. PURPOSE: The purpose of this in vitro study was to evaluate the fracture resistance of inlay-retained fixed partial dentures produced from 3 different monolithic zirconia materials and based on 2 preparation types and applications with and without thermocycling. MATERIAL AND METHODS: A model with missing right and left mandibular first molars was used for different cavity preparations...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965681/removable-complete-digital-dentures-a-workflow-that-integrates-open-technologies
#16
Lucio Lo Russo, Angelo Salamini
Digitalization of the design and manufacture of removable complete dentures has numerous advantages. The workflow as presented integrates current open digital technologies into a functional protocol, enabling complete dentures to be designed and fabricated without system-specific trays or instruments. This is done by using a conventional technique to acquire anatomic information.
September 28, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965680/in%C3%A2-vitro-evaluation-of-the-polishing-effect-and-optical-properties-of-monolithic-zirconia
#17
Yoon-Hyuk Huh, Eul-Chang Yang, Chan-Jin Park, Lee-Ra Cho
STATEMENT OF PROBLEM: The relationship between surface roughness and the optical characteristics of zirconia prostheses may be affected by the type of shaded block. PURPOSE: The purpose of this in vitro study was to investigate changes in surface roughness and brightness of monolithic zirconia blocks of different shades after polishing. MATERIAL AND METHODS: The surface roughness averages of 3 different kinds of shaded zirconia blocks (Zenostarof T0 [T0], Zenostar sun [Ts], and Zenostar sun chroma [Tsc]) were compared after surface polishing...
September 28, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965677/effect-of-polymerization-temperature-on-the-properties-of-autopolymerizing-resin
#18
Koji Morita, Hiroki Tsuka, Kan Kato, Kazuhiro Tsuga
STATEMENT OF PROBLEM: The polymerization conditions of an autopolymerizing resin affect its physical properties, and at chairside, 3 different methods are commonly used: cooling in cold water, warming in warm water, and heating in hot water. However, the effects of polymerization temperature on the physicomechanical properties of autopolymerizing resin are unclear. PURPOSE: The purpose of this in vitro study was to determine the effect of polymerization temperature on the physicomechanical properties of autopolymerizing resin, including shrinkage, water absorption, surface roughness, amount of residual monomer, and flexural strength...
September 28, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965676/potentiodynamic-polarization-study-of-the-corrosion-behavior-of-palladium-silver-dental-alloys
#19
Desheng Sun, William A Brantley, Gerald S Frankel, Reza H Heshmati, William M Johnston
STATEMENT OF PROBLEM: Although palladium-silver alloys have been marketed for over 3 decades for metal-ceramic restorations, understanding of the corrosion behavior of current alloys is incomplete; this understanding is critical for evaluating biocompatibility and clinical performance. PURPOSE: The purpose of this in vitro study was to characterize the corrosion behavior of 3 representative Pd-Ag alloys in simulated body fluid and oral environments and to compare them with a high-noble Au-Pd alloy...
September 28, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965675/oral-health-related-quality-of-life-and-masticatory-function-after-conventional-prosthetic-treatment-a-cohort-follow-up-study
#20
Teresa Palomares, Javier Montero, Eva M Rosel, Ramón Del-Castillo, Juan I Rosales
STATEMENT OF PROBLEM: The impact of conventional prosthetic treatment on both the objective and subjective assessments of mastication as well as on well-being is unclear. PURPOSE: The purpose of this clinical study was to compare the impact on oral health-related quality of life and masticatory function in participants treated with conventional dental prostheses. MATERIAL AND METHODS: A total of 72 patients requiring prosthetic rehabilitation were enrolled by referral from the Faculty of Dentistry at the University of Granada, Spain...
September 28, 2017: Journal of Prosthetic Dentistry
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