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ceramic veneer

Federico Tirone, Stefano Salzano, Erik Rolando
BACKGROUND: Microdontia of the maxillary anterior teeth occurs quite frequently but is poorly documented. The literature describes several treatment choices, which are often focused on an orthodontic approach rather than a restorative one. The latest trends in restorative dentistry and the new ceramic materials, such as lithium disilicate, allow clinicians to perform esthetic rehabilitations based on microinvasive approaches that are most appropriate for younger patients. SUMMARY: Four patients, all employed in the field of dentistry, presented at our dental practice complaining of diastemata between their maxillary anterior teeth...
2016: International Journal of Esthetic Dentistry
Mario Imburgia, Angelo Canale, Davide Cortellini, Marco Maneschi, Claudio Martucci, Marco Valenti
The esthetic treatment of anterior teeth has always presented a challenge in clinical practice. With the improvement of dental materials, many restorative options such as composite resins, all-ceramic crowns, and ceramic veneers have become available. The current challenge in reconstructive dentistry is to obtain excellent esthetic results while preserving the biological structures involved as much as possible. Thanks to the introduction of high-strength etchable dental ceramics, clinicians and technicians have materials and procedures at their disposal that allow them to restore esthetics and function through a minimally invasive approach...
2016: International Journal of Esthetic Dentistry
Márcia Borba, Maico D de Araújo, Karen A Fukushima, Humberto N Yoshimura, Jason A Griggs, Álvaro Della Bona, Paulo F Cesar
OBJECTIVE: To evaluate the effect of two aging methods (mechanical cycling and autoclave) on the mechanical behavior of veneer and framework ceramic specimens with different configurations (monolithic, two and three-layers). METHODS: Three ceramics used as framework for fixed dental prostheses (YZ-Vita In-Ceram YZ; IZ-Vita In-Ceram Zirconia; AL-Vita In-Ceram AL) and two veneering porcelains (VM7 and VM9) were studied. Bar-shaped specimens were produced in three different designs: monolithic, two layers (porcelain-framework) and three layers (porcelain-framework-porcelain)...
October 7, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Murat Alkurt, Zeynep Yeşil Duymus, Mustafa Gundogdu
The aim of study was to evaluate the effects of multiple firings on the microstructures of zirconia and two ceramics. Vita VM9 (VMZ) and Cerabien ZR (C-Z) ceramics on a zirconia framework and zirconia without veneering ceramic (WO-Z) were evaluated. Firing methods included firing two, five, and ten times (n=10). The effects of multiple firings on the surface hardness of the materials were evaluated using a Vickers hardness (HV) tester. Data were analyzed by two-way ANOVA and Tukey's test (α=0.05). After firing five and ten times, the hardness of VM-Z and C-Z increased significantly (p<0...
2016: Dental Materials Journal
Hee-Kyung Kim, Sung-Hun Kim
OBJECTIVES: The purposes of this study were to evaluate the optical properties of recently marketed pre-colored monolithic zirconia ceramics and to compare with those of veneered zirconia and lithium disilicate glass ceramics. METHODS: Various shades of pre-colored monolithic zirconia, veneered zirconia, and lithium disilicate glass ceramic specimens were tested (17.0×17.0×1.5mm, n=5). CIELab color coordinates were obtained against white, black, and grey backgrounds with a spectrophotometer...
October 4, 2016: Journal of Dentistry
Markus B Blatz, Marcela Alvarez, Kimiyo Sawyer, Marco Brindis
Zirconia has become one of the most popular materials in dentistry. New high-translucent zirconia ceramics have favorable optical properties and can be applied as monolithic full-contour restorations in various clinical indications for posterior and anterior teeth. However, having reliable cementation protocols is fundamental for clinical success of indirect ceramic dental restorations, including those made from zirconia materials. Resin bonding supports ceramic restorations and is necessary for onlays, laminate veneers, and resinbonded fixed dental prostheses...
October 2016: Compendium of Continuing Education in Dentistry
Vinicius P Fardin, Vitor Guarconi de Paula, Estevam A Bonfante, Paulo G Coelho, Gerson Bonfante
OBJECTIVE: To evaluate the fatigue life of zirconia-veneered and metal-ceramic crowns comprised by an even thickness or a modified framework design when loaded on marginal ridges. METHODS: Eighty marginal ridges were present after fabrication of forty molar crowns cemented onto composite-resin replicas and divided (n=20/each), in the following groups: metal-ceramic with even thickness (MCev) or with a modified framework design (MCm, lingual collar with proximal struts); porcelain-fused to zirconia with even thickness (PFZev) or with the modified framework design (PFZm)...
September 30, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Yu-Tao Jian, Tian-Yu Tang, Michael V Swain, Xiao-Dong Wang, Ke Zhao
OBJECTIVE: The aim of this in vitro study was to evaluate the effect of core ceramic grinding on the fracture behaviour of bilayered zirconia under two loading schemes. METHODS: Interfacial surfaces of sandblasted zirconia disks (A) were ground with 80 (B), 120 (C) and 220 (D) grit diamond discs, respectively. Surface roughness and topographic analysis were performed using a confocal scanning laser microscope (CSLM) and a scanning electron microscopy (SEM). Relative monoclinic content was evaluated using X-ray diffraction analysis (XRD) then reevaluated after simulated veneer firing...
September 29, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Panagiotis Zoidis, Eleonora Bakiri, Gregory Polyzois
A modified polyetheretherketone (PEEK) framework material veneered with indirect light-polymerized composite resin was used as an alternative material for the fabrication of an endocrown restoration for an extensively damaged molar. The elastic modulus of the polyetheretherketone framework (4 GPa) veneered with indirect composite resin could dampen the occlusal forces protecting tooth structures better than ceramic materials. This is important in the restoration of extensively damaged molars with weak roots...
September 28, 2016: Journal of Prosthetic Dentistry
C L Leal, Apv Queiroz, R M Foxton, S Argolo, P Mathias, A N Cavalcanti
PURPOSE: The aim of this study was to evaluate the effect of low-thickness ceramic laminate translucency on water sorption and solubility in resin luting agents. METHODS AND MATERIALS: Ceramic slides (15×0.7 mm) were generated using lithium disilicate (IPS e.max Press, Ivoclar-Vivadent, Schaan, Liechtenstein) that were A1 in color and had decreasing degrees of translucency (high, medium, and low). A slide of transparent glass of similar size was used as the control...
September 2016: Operative Dentistry
G T Rocca, P Sedlakova, C M Saratti, R Sedlacek, L Gregor, N Rizcalla, A J Feilzer, I Krejci
OBJECTIVE: To evaluate the influence of different types of modifications with resin on fatigue resistance and failure behavior of CAD-CAM resin nano ceramic (RNC) restorations for maxillary first premolars. METHODS: Sixty standardized resin composite root dies received CAD-CAM RNC endocrowns (n=30) and crowns (n=30) (Lava Ultimate, 3M Espe). Restorations were divided into six groups: full anatomic endocrowns (group A) and crowns (group D), buccal resin veneered endocrowns (group B) and crowns (group E) and buccal resin veneered endocrowns (group C) and crowns (group F) with a central groove resin filling...
September 23, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Anders Ekfeldt, Björn Fürst, Gunnar E Carlsson
OBJECTIVES: To evaluate the clinical outcome of custom-made zirconia abutments for implant-supported single-tooth restorations 10-11 years after insertion. MATERIAL AND METHODS: The study comprises a clinical examination of 23 patients with 30 restorations placed 10-11 years ago. Oral surgeons placed the implants. The prosthodontic treatment was provided at a prosthodontic specialist clinic. The restoration was either an all-ceramic crown for cementation or a screw-retained one-piece restoration with the veneering porcelain baked directly to the zirconia abutment...
September 24, 2016: Clinical Oral Implants Research
Maria Carlos Real Dias, Jorge N R Martins, André Chen, Sérgio André Quaresma, Henrique Luís, João Caramês
PURPOSE: This prospective clinical study evaluated the success rate of indirect composite resin cuspal coverage on endodontically treated molars and premolars and the survival rate of the restored teeth. MATERIALS AND METHODS: One hundred fifty endodontically treated teeth were restored with total resin cuspal coverage and randomly selected for the study. Patients were recalled after 2 to 5 years for clinical evaluation. Data were subjected to standard tests of statistical correlations using Spearman test...
September 23, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
Maria André, Wen Kou, Göran Sjögren, Anders Sundh
OBJECTIVES: To evaluate the effect of specimen thickness, pretreatment and hydrothermal aging on the biaxial flexural strength (BFS) of lithium di-silicate glass (e.max Cad) and magnesia-stabilized zirconia (ZirMagnum) ceramic discs. METHODS: The e.max Cad discs was studied: i) crystallized, ii) crystallized and glazed and iii) crystallized, glazed and unglazed side etched with hydrofluoric acid. The ZirMagnum discs were studied: i) as delivered, ii) after sandblasting and iii) after heat treatment similar to veneering...
September 13, 2016: Journal of Dentistry
Hee-Kyung Kim, Sung-Hun Kim, Jai-Bong Lee, Jung-Suk Han, In-Sung Yeo
Monolithic zirconia restorations increasingly have been used in dental practice in recent years and demonstrate superior mechanical performance compared with porcelain-veneered zirconia restorations. Recent advances in manufacturing technology have made possible the fabrication of translucent monolithic zirconia ceramics. This case report describes three clinical examples of monolithic zirconia fixed dental prostheses being used in the anterior and posterior regions and exhibiting acceptable esthetic results...
September 2016: International Journal of Prosthodontics
Maj H Nicolaisen, Golnosh Bahrami, Lars Schropp, Flemming Isidor
PURPOSE: The aim of this study was to assess functional and esthetic satisfaction plus evaluate changes in oral health-related quality of life (OHRQoL) using the Oral Health Impact Profile (OHIP-14) after insertion of a metal-ceramic (MC-FDP) or a veneered zirconia all-ceramic (AC-FDP) posterior three-unit fixed dental prosthesis (FDP). Additionally, patients' and professionals' esthetic evaluations were compared. MATERIALS AND METHODS: A convenience sample of 34 patients was randomized to receive a MC-FDP (n = 17) or an AC-FDP (n = 17)...
September 2016: International Journal of Prosthodontics
Hamid Jalali, Zeinab Bahrani, Somayeh Zeighami
AIM: To achieve acceptable contour, color, esthetics, and occlusal relations, the porcelain may be subjected to several firing cycles. This study sought to assess the effect of multiple firing cycles on the microtensile bond strength (MTBS) of lithium disilicate-based ceramics (e.max Press, e.max CAD). MATERIALS AND METHODS: IPS e.max computer aided design (CAD) cores were fabricated using CAD/(Computer Aided Manufacturing (CAM)) technology, and IPS e.max Press cores were fabricated using the heat-pressing technique (12 × 12 × 4 mm(3))...
2016: Journal of Contemporary Dental Practice
Fernando Rojas Vizcaya
PURPOSE: To measure the extension of cantilever lengths, thicknesses, and heights of zirconia prostheses in the lingual and facial areas of the distal screw access openings, and to evaluate the clinical performance regarding chipping or fracture of the distal cantilevered sections of double full-arch CAD/CAM screw-retained, stained, monolithic zirconia, gingival-colored ceramic implant-supported fixed prostheses (MZ-FPs). MATERIALS AND METHODS: Ten edentulous patients were provided with a total of 20 CAD/CAM double full-arch MZ-FPs...
August 29, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
Wolfgang Bömicke, Stefan Rues, Verena Hlavacek, Peter Rammelsberg, Marc Schmitter
OBJECTIVES: To compare ultimate fracture load (Fu ), load at first damage (F1d ), and fracture pattern for posterior fixed dental prostheses (FDPs) manufactured from translucent, yttria-stabilized zirconia polycrystal. METHODS: Premolar-size FDPs in 4 test groups (n = 16/group) were constructed as veneered complete crown-retained (group 1), monolithic complete crown-retained (group 2), monolithic partial veneer crown-retained (group 3), or monolithic resin-bonded (group 4) prostheses with minimum zirconia wall thickness (0...
August 26, 2016: Journal of Esthetic and Restorative Dentistry
Hamid Jalali, Leyla Sadighpour, Ali Miri, Ahmad Reza Shamshiri
OBJECTIVES: The purpose of this in vitro study was to compare the marginal adaptation and fracture resistance of a zirconia-based all-ceramic restoration with two preparation designs. MATERIALS AND METHODS: Twenty-four mandibular premolars were randomly divided into two groups (n=12); the conventional group received a peripheral shoulder preparation and the modified group received a buccal shoulder and proximal/lingual chamfer preparation. The marginal fit of the zirconia crowns (Cercon) was evaluated using a stereomicroscope...
December 2015: Journal of Dentistry of Tehran University of Medical Sciences
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