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Porcelain veneer

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https://www.readbyqxmd.com/read/28959767/shear-bond-strength-of-porcelain-to-a-base-metal-compared-to-zirconia-core
#1
S M Abrisham, A Fallah Tafti, S Kheirkhah, M A Tavakkoli
STATEMENT OF PROBLEM: Recent clinical results for Zirconia all-ceramic restorations have revealed that the fracture rate 6-15% of the Zirconia framework is so low and the core of Zirconia has high stability. However, chipping-off fractures of porcelain are the most common reason for failures of Zirconia in the fixed partial dentures. OBJECTIVES: The purpose of this study was to compare the shear bond strength (SBS) of porcelain in the porcelain fused to metal and all-ceramic crowns with Zirconia core...
March 2017: J Dent Biomater
https://www.readbyqxmd.com/read/28944367/clinical-outcomes-of-full-arch-fixed-implant-supported-zirconia-prostheses-a-systematic-review
#2
Avinash Bidra, Patchanee Rungruanganunt, Marissa Gauthier
AIM: The primary aim of this systematic review was to study the clinical outcomes of one-piece fixed complete dentures (complete arch fixed implant-supported prostheses) made of zirconia for edentulous patients. The secondary aim was to compare the clinical outcomes of monolithic zirconia vs zirconia veneered with porcelain (conventional, minimal or gingival) for fixed complete dentures. MATERIALS AND METHODS: Two investigators conducted an independent electronic search of the literature, using PubMed and Scopus search engines from January 1, 2000, to August 31, 2016...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28936283/influence-of-thermal-and-mechanical-fatigue-on-the-shear-bond-strength-of-different-all-ceramic-systems
#3
Hugo-Alberto Vidotti, Jefferson-Ricardo Pereira, Elizeu Insaurralde, Luiz F Plaça, José R Delben, Accácio-Lins do Valle
BACKGROUND: To evaluate the influence of thermal and mechanical fatigue on the shear bond strength of different all-ceramic cores and veneering porcelain interfaces. MATERIAL AND METHODS: All-ceramic systems tested were lithium disilicate and zirconia veneered by layering technique. Sixty specimens (n=20) were subjected to shear bond strength. Ten of them were thermal and mechanical cycled. Fracture analysis was performed with stereomicroscopy and scanning electron microscopy...
August 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28927393/the-complete-digital-workflow-in-fixed-prosthodontics-a-systematic-review
#4
Tim Joda, Fernando Zarone, Marco Ferrari
BACKGROUND: The continuous development in dental processing ensures new opportunities in the field of fixed prosthodontics in a complete virtual environment without any physical model situations. The aim was to compare fully digitalized workflows to conventional and/or mixed analog-digital workflows for the treatment with tooth-borne or implant-supported fixed reconstructions. METHODS: A PICO strategy was executed using an electronic (MEDLINE, EMBASE, Google Scholar) plus manual search up to 2016-09-16 focusing on RCTs investigating complete digital workflows in fixed prosthodontics with regard to economics or esthetics or patient-centered outcomes with or without follow-up or survival/success rate analysis as well as complication assessment of at least 1 year under function...
September 19, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28876966/the-effect-of-resin-bonding-on-long-term-success-of-high-strength-ceramics
#5
M B Blatz, M Vonderheide, J Conejo
Digital manufacturing, all-ceramics, and adhesive dentistry are currently the trendiest topics in clinical restorative dentistry. Tooth- and implant-supported fixed restorations from computer-aided design (CAD)/computer-aided manufacturing (CAM)-fabricated high-strength ceramics-namely, alumina and zirconia-are widely accepted as reliable alternatives to traditional metal-ceramic restorations. Most recent developments have focused on high-translucent monolithic full-contour zirconia restorations, which have become extremely popular in a short period of time, due to physical strength, CAD/CAM fabrication, and low cost...
September 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28869512/the-application-of-a-novel-ceramic-liner-improves-bonding-between-zirconia-and-veneering-porcelain
#6
Hee-Sung Lee, Tae-Yub Kwon
The adhesion of porcelain to zirconia is a key factor in the success of bilayered restorations. In this study, the efficacy of a novel experimental liner (EL) containing zirconia for improved bonding between zirconia and veneering porcelain was tested. Four ELs containing various concentrations (0, 3.0, 6.0, and 9.0 wt %) of zirconia were prepared. Testing determined the most effective EL (EL3 containing 3.0 wt % zirconia) in terms of shear bond strength value (n = 15). Three different bar-shaped zirconia/porcelain bilayer specimens were prepared for a three-point flexural strength (TPFS) test (n = 15): no-liner (NL), commercial liner (CL), and EL3...
September 2, 2017: Materials
https://www.readbyqxmd.com/read/28852743/load-bearing-capacity-fracture-mode-and-wear-performance-of-digitally-veneered-full-ceramic-single-crowns
#7
Oliver Schubert, Ephraim Nold, Matthias Obermeier, Kurt Erdelt, Michael Stimmelmayr, Florian Beuer
OBJECTIVES: Computer-aided technologies can help to minimize clinical complications of zirconia-based restorations such as veneering porcelain fractures. The aim of this study was to evaluate different veneering approaches for zirconia single crowns regarding contact wear, fracture strength, and failure mode. METHODS: Six different types of computer-aided design (CAD) crowns were manufactured and conventionally cemented on 10 metal dies each: three groups with a zirconia framework and a CAD/CAM-fabricated veneering cap ("digital veneering system": DVS, CAD-on, Infix CAD), zirconia-based crowns with pressed veneering caps (Infix Press), zirconia framework containing the dentin layer with only the incisal enamel material added (dentin-core), and conventional substructure with powder buildup veneering porcelain (layering technique)...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28839415/cervical-and-incisal-marginal-discrepancy-in-ceramic-laminate-veneering-materials-a-sem-analysis
#8
Hemalatha Ranganathan, Dhanraj M Ganapathy, Ashish R Jain
CONTEXT: Marginal discrepancy influenced by the choice of processing material used for the ceramic laminate veneers needs to be explored further for better clinical application. AIMS: This study aimed to evaluate the amount of cervical and incisal marginal discrepancy associated with different ceramic laminate veneering materials. SETTINGS AND DESIGN: This was an experimental, single-blinded, in vitro trial. SUBJECTS AND METHODS: Ten central incisors were prepared for laminate veneers with 2 mm uniform reduction and heavy chamfer finish line...
April 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28792115/digital-workflow-in-full-arch-implant-rehabilitation-with-segmented-minimally-veneered-monolithic-zirconia-fixed-dental-prostheses-2-year-clinical-follow-up
#9
Panos Papaspyridakos, Kiho Kang, Catherine DeFuria, Sarah Amin, Yukio Kudara, Hans-Peter Weber
OBJECTIVE: To illustrate a digital workflow in full-arch implant rehabilitation with minimally veneered monolithic zirconia and to report the outcomes including technical complications. CLINICAL CONSIDERATIONS: Three patients (5 edentulous arches) received full-arch fixed implant rehabilitation with monolithic zirconia and mild facial porcelain veneering involving a digital workflow. The incisal edges and occluding surface areas were milled out of monolithic zirconia to reduce the possibility of chipping...
August 9, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28773885/influence-of-the-conditioning-method-for-pre-sintered-zirconia-on-the-shear-bond-strength-of-bilayered-porcelain-zirconia
#10
Sebastian Spintzyk, Kikue Yamaguchi, Tomofumi Sawada, Christine Schille, Ernst Schweizer, Masahiko Ozeki, Jürgen Geis-Gerstorfer
This study evaluated the bond strength of veneering porcelain with an experimental conditioner-coated zirconia. Pre-sintered Y-TZP specimens (n = 44) were divided in two groups based on conditioning type. After sintering, all sample surfaces were sandblasted and layered with veneering porcelain. Additionally, half of the specimens in each group underwent thermal cycling (10,000 cycles, 5-55 °C), and all shear bond strengths were measured. After testing, the failure mode of each fractured specimen was determined...
September 8, 2016: Materials
https://www.readbyqxmd.com/read/28736293/zirconia-based-versus-metal-based-single-crowns-veneered-with-overpressing-ceramic-for-restoration-of-posterior-endodontically-treated-teeth-5-year-results-of-a-randomized-controlled-clinical-study
#11
Carlo Monaco, Altin Llukacej, Paolo Baldissara, Antonio Arena, Roberto Scotti
OBJECTIVES: The aim of this 5-year randomized controlled trial was to compare the longevity and clinical behavior of single posterior crowns made with pressable ceramic on zirconia and on metal frameworks, and if failures occur, to delineate the contributing factors. METHODS: 72 patients, who needed the covering of at least a molar and/or premolar, were included in the study. All teeth were endodontically treated, with absence of periapical lesion or active periodontitis...
July 21, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28727466/ceramic-veneers-with-gingiva-shaded-porcelain-to-replace-lost-interdental-papillae-a-case-report
#12
Stephen J Chu, Adam J Mieleszko
With implant-supported reconstructions, gingiva-shaded pink-colored restorative materials serve as an option for replacing both hard and soft tissues cosmetically. This article presents a case report describing restorative treatment for a patient who requested individual crowns and veneers after she had had multiple surgical interventions to replace a failing implant tooth No. 9. In addition to replacement of the implant prosthesis, this case involved restorative papillae reconstruction that was performed to treat interdental recession that had occurred after the surgeries...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28708920/complications-and-clinical-considerations-of-the-implant-retained-zirconia-complete-arch-prosthesis-with-various-opposing-dentitions
#13
Jorge Gonzalez, Robert G Triplett
PURPOSE: To evaluate the performance of the implant-retained zirconia complete-arch prosthesis with various opposing dentitions. MATERIALS AND METHODS: The 40 patients included in this retrospective case series study were treated with one or two implant-retained zirconia complete-arch prostheses (ZIRCAP) using the Zirkonzahn protocol. Prettau zirconia frames were created with strategic cutbacks in the structure to extend zirconia incisal coverage of the esthetic anterior sextants and complete monolithic zirconia in the molar areas; subsequent layers of porcelain were applied to nonfunctional and esthetic areas...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28689903/survival-of-2039-complete-arch-fixed-implant-supported-zirconia-prostheses-a-retrospective-study
#14
Avinash S Bidra, Michael Tischler, Claudia Patch
STATEMENT OF PROBLEM: Presently, data for the survival of 1-piece complete arch fixed implant-supported zirconia prostheses are limited. PURPOSE: The purpose of this retrospective study was to evaluate the survival outcomes of 1-piece complete arch fixed implant-supported zirconia prostheses fabricated by a single dental laboratory supporting several clinicians. MATERIAL AND METHODS: Outcome data were collected over a 5-year period from a large commercial dental laboratory that fabricated 2039 1-piece complete arch fixed implant-supported monolithic zirconia prostheses...
July 6, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28688487/development-of-an-expert-system-for-the-simulation-model-for-casting-metal-substructure-of-a-metal-ceramic-crown-design
#15
Ivan Matin, Miodrag Hadzistevic, Djordje Vukelic, Michal Potran, Tomaz Brajlih
BACKGROUND AND OBJECTIVES: Nowadays, the integrated CAD/CAE systems are favored solutions for the design of simulation models for casting metal substructures of metal-ceramic crowns. The worldwide authors have used different approaches to solve the problems using an expert system. Despite substantial research progress in the design of experts systems for the simulation model design and manufacturing have insufficiently considered the specifics of casting in dentistry, especially the need for further CAD, RE, CAE for the estimation of casting parameters and the control of the casting machine...
July 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28675043/effect-of-round-curvature-of-anterior-implant-supported-zirconia-frameworks-finite-element-analysis-and-in-vitro-study-using-digital-image-correlation
#16
Ana Messias, Maria Augusta Neto, Ana Martins Amaro, Pedro Nicolau, Luis Manuel Roseiro
Two groups of 4-unit zirconia frameworks were produced by CAD/CAM to simulate the restoration of an anterior edentulous gap supported by 2 implant-abutment assemblies. Group 1 comprised straight configuration frameworks and group 2 consisted of arched frameworks. Specimens were made with the same connector cross-section area and were cemented and submitted to static loads. Displacements were captured with two high-speed photographic cameras and analysed with video correlation system. Frameworks and the implant-abutment assembly were scanned and converted to 3DCAD objects by reverse engineering process...
July 4, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28653048/porcelain-veneer-post-bonding-crack-repair-by-resin-infiltration
#17
Marco Gresnigt, Michel Magne, Pascal Magne
Ceramic laminate veneer restorations are indicated in several clinical situations. Indirect restorations are usually chosen if the less-invasive options - bleaching, resin infiltration, or composite resin restorations - are not possible, or when it is too difficult to achieve an esthetically pleasing result in the long term. Bonded indirect partial restorations are highly dependent on their adhesive interface, as these thin restorations have a relatively low cohesive strength. Therefore, preservation of sound enamel, conditioning of the restorations and of the substrate, and luting procedures are of paramount importance for a successful outcome...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28653047/noninvasive-bilaminar-cad-cam-composite-resin-veneers-%C3%A2-a-semi-in-direct-approach
#18
Pascal Magne
Direct composite resin restorations have been recognized for their valuable clinical service and respect of intact hard tissue. The cost-effectiveness and inherent minimally invasive approach of resin-based materials means that they are also gaining popularity for use in computer-aided design/computer-aided manufacture (CAD/CAM) procedures. Several cases from the student clinics at the Herman Ostrow School of Dentistry of USC are presented that could have been resolved either with direct composite resin restorations or with indirect porcelain veneers...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28642927/the-effect-of-grinding-and-or-airborne-particle-abrasion-on-the-bond-strength-between-zirconia-and-veneering-porcelain-a-systematic-review
#19
REVIEW
Karin Lundberg, Lindsey Wu, Evaggelia Papia
Objective: The aim of the study was to make an inventory of current literature on the bond strength between zirconia and veneering porcelain after surface treatment of zirconia by grinding with diamond bur and/or with airborne-particle abrasion. Material and methods: The literature search for the present review was made following recommended guidelines using acknowledged methodology on how to do a systematic review. The electronic databases PubMed, Cochrane Library, and Science Direct were used in the present study...
January 2017: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28637992/ten-year-clinical-observation-of-a-porcelain-laminate-veneer-seated-with-biological-tissue-adaptation-bta-technique
#20
Kenji Tsubota
This clinical report describes the use of biological tissue adaptation technique for placement of a porcelain laminate veneer in a 50-year-old woman. The author developed this prosthetic technique to facilitate alignment of gingival levels for esthetic purposes. The laminate veneer was seated on the maxillary central incisor with an adhesive system. Although the margin of the restoration overhangs, no gingival inflammation or recession has been observed during a follow-up period of 10 years and 9 months.
2017: Journal of Oral Science
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