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Journal of Prosthetic Dentistry

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https://www.readbyqxmd.com/read/29724562/impact-of-crestal-bone-resorption-on-quality-of-life-and-professional-maintenance-with-conventional-dentures-or-locator-retained-mandibular-implant-overdentures
#1
Carine Matthys, Stijn Vervaeke, Wolfgang Jacquet, Hugo De Bruyn
STATEMENT OF PROBLEM: The influence of the mandibular resorption profile on clinical outcome after converting a conventional complete denture into a Locator-retained implant overdenture is unknown. PURPOSE: The purpose of this prospective study was to assess the oral health-related quality of life (OHRQoL) and prosthetic maintenance of mandibular overdentures on 2 Locator abutments in relation to the resorption degree of the edentulous mandible. MATERIAL AND METHODS: Twenty-five participants were treated and classified according to the Cawood and Howell (CAW-H) resorption classification for the resorption profile of the mandible, CAW-H group III-IV (n=14) and CAW-H group V (n=11)...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724561/loss-of-tooth-structure-associated-with-preparation-for-two-monolithic-cad-cam-complete-coverage-restorations
#2
Ramtin Sadid-Zadeh, Adrian Farsaii, Athena Goodarzi, Elaine L Davis
STATEMENT OF PROBLEM: Different techniques are used to fabricate complete coverage restorations. Each fabrication technique requires a specific preparation design that may violate a principle of tooth preparation, that is, conservation of tooth structure. PURPOSE: The purpose of this in vitro study was to compare the volume of loss of mandibular first molar structure associated with a preparation for computer-aided design and computer-aided manufacturing (CAD-CAM) versus conventionally fabricated complete coverage restorations...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724560/parafunctional-loading-and-occlusal-device-on-stress-distribution-around-implants-a-3d-finite-element-analysis
#3
Manuel Tomás Borges Radaelli, Henrique Takashi Idogava, Aloisio Oro Spazzin, Pedro Yoshito Noritomi, Noéli Boscato
STATEMENT OF PROBLEM: An occlusal device is frequently recommended for patients with bruxism to protect implant-supported restorations and prevent marginal bone loss. Scientific evidence to support this treatment is lacking. PURPOSE: The purpose of this 3-dimensional (3D) finite element study was to evaluate the influence of an acrylic resin occlusal device, implant length, and insertion depth on stress distribution with functional and parafunctional loadings. MATERIAL AND METHODS: Computer-aided design software was used to construct 8 models...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724559/fabrication-of-an-interim-complete-removable-dental-prosthesis-with-an-in-office-digital-light-processing-three-dimensional-printer-a-proof-of-concept-technique
#4
Wei-Shao Lin, Bryan T Harris, John Pellerito, Dean Morton
This report describes a proof of concept for fabricating an interim complete removable dental prosthesis with a digital light processing 3-dimensional (3D) printer. Although an in-office 3D printer can reduce the overall production cost for an interim complete removable dental prosthesis, the process has not been validated with clinical studies. This report provided a preliminary proof of concept in developing a digital workflow for the in-office additively manufactured interim complete removable dental prosthesis...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724558/marginal-and-internal-fit-of-pre-sintered-co-cr-and-zirconia-3-unit-fixed-dental-prostheses-as-measured-using-microcomputed-tomography
#5
Elie E Daou, Hani Ounsi, Mutlu Özcan, Nadin Al-Haj Husain, Ziad Salameh
STATEMENT OF PROBLEM: Limited information is available on the precision of new metal processing technologies. PURPOSE: The purpose of this in vitro study was to evaluate the marginal and internal fit of pre-sintered cobalt-chromium (Co-Cr) and zirconia 3-unit fixed dental prostheses using x-ray microcomputed tomography. MATERIAL AND METHODS: Three-unit fixed dental prostheses were prepared on metal dies (N=12) using a typodont model from the maxillary first premolar to the first molar...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724557/analysis-of-flexural-strength-and-contact-pressure-after-simulated-chairside-adjustment-of-pressed-lithium-disilicate-glass-ceramic
#6
Ali Ramadhan, Geoffrey A Thompson, Georgios Maroulakos, David Berzins
STATEMENT OF PROBLEM: Research evaluating load-to-failure of pressed lithium disilicate glass-ceramic (LDGC) with a clinically validated test after adjustment and repair procedures is scarce. PURPOSE: The purpose of this in vitro study was to investigate the effect of the simulated chairside adjustment of the intaglio surface of monolithic pressed LDGC and procedures intended to repair damage. MATERIAL AND METHODS: A total of 423 IPS e.max Press (Ivoclar Vivadent AG) disks (15 mm diameter, 1 mm height) were used in the study...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724556/cytotoxic-potential-of-denture-base-and-reline-acrylic-resins-after-immersion-in-disinfectant-solutions
#7
Paula Masetti, Maria Isabel Amaya Arbeláez, Ana Claudia Pavarina, Paula Volpato Sanitá, Janaina Habib Jorge
STATEMENT OF PROBLEM: The daily immersion of dentures in disinfectant solutions can cause the incorporation of toxic substances in the acrylic resins, and studies evaluating the cumulative effect of disinfectant solutions on cell culture are lacking. PURPOSE: The purpose of this in vitro study was to evaluate the cytotoxic potential of cell cultures of denture base and reline acrylic resins after immersion in disinfectant solutions. MATERIAL AND METHODS: Disk-shaped specimens (14×1...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724555/understanding-and-communicating-radiation-dose-and-risk-from-cone-beam-computed-tomography-in-dentistry
#8
REVIEW
Jill Weber Aanenson, John E Till, Helen A Grogan
With the increased use of 3-dimensional dental imaging and cone beam computed tomography in dentistry, dental practitioners should understand and effectively communicate the associated radiation doses and risks to patients. This article will explain dose and risk of cone beam computed tomography technology, drawing on 3 decades of experience in communicating human health risk to the public from radiation exposure in the environment. This report provides examples of dose and risk metrics and comparisons to help providers understand the risk to their patients and to effectively communicate that risk...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724554/complete-arch-accuracy-of-intraoral-scanners
#9
Joshua C Treesh, Peter C Liacouras, Robert M Taft, Daniel I Brooks, Sorana Raiciulescu, Daniel O Ellert, Gerald T Grant, Ling Ye
STATEMENT OF PROBLEM: Intraoral scanners have shown varied results in complete-arch applications. PURPOSE: The purpose of this in vitro study was to evaluate the complete-arch accuracy of 4 intraoral scanners based on trueness and precision measurements compared with a known reference (trueness) and with each other (precision). MATERIAL AND METHODS: Four intraoral scanners were evaluated: CEREC Bluecam, CEREC Omnicam, TRIOS Color, and Carestream CS 3500...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724553/effect-of-metal-opaquer-on-the-final-color-of-3-ceramic-crown-types-on-3-abutment-configurations
#10
Rabia Arif, Burak Yilmaz, Aras Mortazavi, Tuncer B Ozcelik, William M Johnston
STATEMENT OF PROBLEM: The effect of a recently introduced metal opaquer when used to mask the color of a titanium abutment under ceramic crown systems is unknown. PURPOSE: The purpose of this study was to compare the color coordinates of 3 ceramic crown types-characterized monolithic lithium disilicate (LDC) (IPS e.max; Ivoclar Vivadent AG), layered lithium disilicate (LDL) (IPS e.max; Ivoclar Vivadent AG), and layered zirconia (ZL) (H.C. Starck)-on 3 abutment configurations, nonopaqued titanium (Ti), resin opaqued titanium (Op), and zirconia (Zir)...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724552/minimally-invasive-esthetic-improvement-in-a-patient-with-dental-fluorosis-by-using-microabrasion-and-bleaching-a-clinical-report
#11
Mario F Romero, Courtney S Babb, Jacqueline Delash, William W Brackett
Dental fluorosis is a condition that produces unesthetic coloration of enamel because of excessive fluoride ingestion during enamel formation. Its appearance can range in severity from mildly white and opaque to dark brown and can lead a patient to seek dental treatment. Historically, these lesions have been masked, either with direct or indirect restorations, but more conservative treatment options are now available, including the combination of microabrasion and bleaching. This clinical report describes the use of these treatment options to address a young patient's dental fluorosis...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724551/influence-of-low-temperature-degradation-on-the-wear-characteristics-of-zirconia-against-polymer-infiltrated-ceramic-network-material
#12
Zhichao Hao, Yuanyuan Ma, Wenjia Liu, Yukun Meng, Keisuke Nakamura, Jiefei Shen, Hang Wang
STATEMENT OF PROBLEM: Low-temperature degradation may affect zirconia restorations during their clinical service. Concerns have been raised about the effect of low-temperature degradation on the wear behavior of zirconia. Moreover, the wear resistance of this novel polymer-infiltrated ceramic-network material needs to be better evaluated. PURPOSE: The purpose of this in vitro study was to investigate the influence of aging on the wear resistance of zirconia opposing polymer-infiltrated ceramic-network material...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724550/effect-of-different-resin-cements-and-surface-treatments-on-the-shear-bond-strength-of-ceramic-glass-polymer-materials
#13
Gülce Alp, Meryem Gülce Subaşı, William M Johnston, Burak Yilmaz
STATEMENT OF PROBLEM: The effect of different surface treatment techniques on the bond strength of different types of ceramic-glass polymer computer-assisted design and computer-assisted manufacturing (CAD-CAM) materials and resin cements after aging is unknown. PURPOSE: The purpose of this in vitro study was to evaluate the surface roughness of different ceramic-glass polymer CAD-CAM materials after 2 different surface treatments and the effect of material, surface treatment, resin cement, and aging on bond strength...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724549/the-antibacterial-cytotoxic-and-flexural-properties-of-a-composite-resin-containing-a-quaternary-ammonium-monomer
#14
Qiting Huang, Shuheng Huang, Xiaoxu Liang, Wei Qin, Fang Liu, Zhengmei Lin, Jingwei He
STATEMENT OF PROBLEM: The use of composite resin to restore teeth has increased substantially during the last decades. However, secondary caries and the fracture of restorations are the leading reasons for clinical restoration failure. Mechanically strong composite resins with caries-inhibition capabilities are needed. Although antibacterial dimethacrylate quaternary ammonium monomers have been synthesized, composite resin containing dimethacrylate quaternary ammonium monomers and glass fillers has rarely been reported...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724548/risk-of-bias-assessment-of-systematic-reviews-regarding-dental-implant-placement-in-smokers-an-umbrella-systematic-review
#15
REVIEW
Olavo B de Oliveira-Neto, Fabiano Timbo Barbosa, Celio Fernando de Sousa-Rodrigues, Fernando Jose Camello de Lima
STATEMENT OF PROBLEM: Although dental implant treatment has a high success rate, patient-related factors may cause implant failure. In this context, smoking is associated with adverse effects on implant osseointegration. In spite of systematic reviews addressing this topic, the risk of bias in these reviews must be assessed to inform readers whether the studies were conducted with methodological rigor and whether their recommendations are viable in daily clinical practice. PURPOSE: The purpose of this umbrella systematic review was to assess the risk of bias of systematic reviews regarding dental implant placement in smokers...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724547/an-investigation-of-the-esthetic-indicators-of-maxillary-anterior-teeth-in-young-turkish-people
#16
Hatice Özdemir, Merve Köseoğlu, Funda Bayindir
STATEMENT OF PROBLEM: Comprehensive studies evaluating the dimensions of anterior maxillary teeth in the Turkish population with respect to different esthetic parameters are lacking. PURPOSE: The purpose of this clinical study was to evaluate different proportions of teeth and compare them with current esthetic parameters such as the golden proportion, recurring esthetic dental proportion, and width-to-height ratio of central incisors and to evaluate whether the apparent contact dimension of maxillary anterior teeth follows the "50:40:30" rule...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724546/postmortem-evaluation-of-mandibular-implant-supported-fixed-complete-denture-after-30-years-of-service
#17
WookJin Seong, James Lee, Luis Delima, Hari S Prasad, Heather J Conrad, Dennis Tarnow
A postmortem evaluation of a 5-implant-supported mandibular fixed complete denture that had successfully opposed a maxillary conventional complete denture for 30 years was undertaken. Before embalming, radiographs, implant stability measurements, push-in failure load tests, and histomorphometric analyses were performed on the implants and the mandible. Evaluation of this cadaver suggests that an edentulous mandible restored with an implant-supported fixed prosthesis can function successfully for over 30 years with few complications...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29724545/an-impression-technique-for-patients-with-fixed-orthodontic-appliances
#18
Victor E de Souza Batista, Aljomar J Vechiato-Filho, Fellippo R Verri
No abstract text is available yet for this article.
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29705672/mechanical-properties-of-cobalt-chromium-3-unit-fixed-dental-prostheses-fabricated-by-casting-milling-and-additive-manufacturing
#19
Marit Øilo, Harald Nesse, Odd Johan Lundberg, Nils Roar Gjerdet
STATEMENT OF PROBLEM: New additive manufacturing techniques for nonprecious alloys have made the fabrication of metal-ceramic fixed partial dentures (FPDs) less expensive and less time-consuming. However, whether the mechanical properties produced by these techniques are comparable is unclear. PURPOSE: The purpose of this in vitro study was to evaluate the mechanical properties of cobalt-chromium frameworks for FPDs fabricated by 3 different techniques. MATERIAL AND METHODS: Thirty frameworks for 3-unit FPDs were fabricated by traditional casting, computer-aided design and computer-aided manufacturing (CAD-CAM) milling, and selective laser melting (SLM), with n=10 in each group...
April 25, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29703675/accuracy-and-reproducibility-of-virtual-edentulous-casts-created-by-laboratory-impression-scan-protocols
#20
Lingyan Peng, Li Chen, Bryan T Harris, Bikash Bhandari, Dean Morton, Wei-Shao Lin
STATEMENT OF PROBLEM: Although computer-aided design and computer-aided manufacturing (CAD-CAM) complete removable dental prostheses (CRDPs) have gained popularity, conventional impressions are still common for CAD-CAM CRDP treatment. These need to be digitized and converted into virtual edentulous casts with a laboratory impression scan protocol during prosthesis fabrication. How this can best be accomplished is unclear. PURPOSE: The purpose of this in vitro study was to compare the accuracy and reproducibility of virtual edentulous casts created by a dental laboratory laser scanner and a cone-beam computed tomography (CBCT) scanner with a digitized master cast...
April 24, 2018: Journal of Prosthetic Dentistry
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