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Porcelain veneer

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https://www.readbyqxmd.com/read/28629657/single-unit-implant-supported-restoration-adjacent-to-multiple-lithium-disilicate-restorations-an-approach-to-an-esthetic-challenge-a-clinical-report
#1
Gelareh Ronaghi, Winston Chee, Stephanie Yeung
This clinical report describes a method for predictably shade matching a highly opaque yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP) implant restoration adjacent to relatively translucent lithium disilicate veneers in the maxillary anterior region. To achieve a satisfactory outcome, the milled Y-TZP abutment was layered with low-fusing feldspathic porcelain to match the stump shade of the adjacent prepared teeth; this layer subsequently facilitated adhesive bonding of a veneer to the abutment before insertion...
June 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28621271/effect-of-sandblasting-angle-and-distance-on-biaxial-flexural-strength-of-zirconia-based-ceramics
#2
Somayeh Zeighami, Ali Gheidari, Hoseinali Mahgoli, Ahmad Rohanian, Safoura Ghodsi
AIM: Surface treatment is necessarily required for bonding of zirconia to the veneering porcelain and luting cements. Sandblasting is the most common and probably the most efficient surface treatment method. Sandblasting roughens the surface and may affect the flexural strength of zirconia. Different sandblasting protocols may yield variable results. This study sought to assess the effect of sandblasting angle and distance on the biaxial flexural strength of zirconia-based ceramics. MATERIALS AND METHODS: This in vitro experimental study was conducted on 50 zirconia discs measuring 1...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28609504/combining-esthetic-layering-and-lithium-disilicate-sintering-technique-on-zirconia-frameworks-a-veneering-option-to-prevent-ceramic-chipping
#3
Reza Saeidi Pour, Daniel Edelhoff, Caroline Freitas Rafael, Otto Prandtner, Stefan Frei, Claudia Angela Maziero Volpato, Anja Liebermann
Major and minor chipping of veneering porcelain are two of the most frequent complications in all-ceramic restorations with zirconia frameworks. In cases of major chipping, replacement of the affected restoration may be necessary. High-strength lithium disilicate ceramic offers new options to serve as veneering material in a sintering technique or as repair material for chipping in combination with the adhesive technique. The purpose of three case presentations here was to describe the use of lithium disilicate ceramic on zirconia frameworks for reliable and esthetic veneering in the posterior region and to repair extended chipping in conventional veneering materials...
July 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28595102/a-comparative-study-of-progressive-wear-of-four-dental-monolithic-veneered-glass-ceramics
#4
Zhenzhen Zhang, Yuanping Yi, Xuesong Wang, Jiawen Guo, Ding Li, Lin He, Shaofeng Zhang
OBJECTIVES: This study evaluated the wear performance and wear mechanisms of four dental glass-ceramics, based on the microstructure and mechanical properties in the progressive wear process. METHODS: Bar (N = 40, n = 10) and disk (N = 32, n = 8) specimens were prepared from (A) lithium disilicate glass-ceramic (LD), (B) leucite reinforced glass-ceramic (LEU), (C) feldspathic glass-ceramic (FEL), and (D) fluorapatite glass-ceramic (FLU). The bar specimens were tested for three-point flexural strength, hardness, fracture toughness and elastic modulus...
May 30, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28590838/comparative-evaluation-of-effects-of-laser-modalities-on-shear-bond-strengths-of-veneering-porcelains-to-laser-sintered-substructures-an-in-vitro-study
#5
Oguzhan Gorler, Aysegul Goze Saygin
OBJECTIVE: Laser modalities and direct metal laser sintering (DMLS) have a potential to enhance micromechanical bonding between dental super- and infrastructures. However, the effect of different manufacturing methods on the metal-ceramic bond strength needs further evaluation. We investigated the effect of surface treatment with Er:YAG, Nd:YAG, and Ho:YAG lasers on the shear bond strength (SBS) of high-fusion dental porcelains (Vita and G-Ceram) to infrastructures prepared with DMLS in vitro settings...
June 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28571263/the-effect-of-accelerated-aging-on-the-colour-stability-of-composite-resin-luting-cements-using-different-bonding-techniques
#6
Satheesh B Haralur, Mohammed Alfaifi, Abdulmajeed Almuaddi, Mazen Al-Yazeedi, Abdulmajeed Al-Ahmari
INTRODUCTION: The main criterion of successful aesthetic restoration is to match the colour of the adjacent teeth. Porcelain laminate veneer is widely practiced indirect restoration in the contemporary aesthetic dentistry. The underlying luting cement colour influences the final outcome of the thin, translucent veneer shade. Hence, colour stability of luting cement is important criteria during their selection. AIM: The objective of the study was to assess the colour stability of the different dentin bonding techniques in composite resin luting cements...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28509504/marginal-adaptation-gap-width-and-fracture-strength-of-teeth-restored-with-different-all-ceramic-vs-metal-ceramic-crown-systems-an-in-vitro-study
#7
Carlo Monaco, Martin Rosentritt, Altin Llukacej, Paolo Baldissara, Roberto Scotti
This study evaluated marginal adaptation before and after thermomechanical (TCML) loading, gap width and fracture strength of all-ceramic single crowns, as compared to porcelain-fused-to-metal (PFM). Thirty extracted premolars were prepared with a round shoulder of 1.0 mm depth. Specimens were restored with zirconia-ceramic (Group 1), lithium disilicate (Group 2) and metal-ceramic single crowns (Group 3). The replica of each sample was observed with a scanning electron microscope (SEM) to evaluate the crown-cement (c-c) and tooth-cement interface (t-c)...
September 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28506654/effect-of-number-of-firings-on-the-color-and-translucency-of-ceramic-core-materials-with-veneer-ceramic-of-different-thicknesses
#8
Funda Bayindir, Ozlem Ozbayram
STATEMENT OF PROBLEM: Whether masking or translucency should be the goal for achieving an esthetic restoration with ceramic materials is unknown. PURPOSE: The purpose of this in vitro study was to examine the effect of the number of firings on the color and translucency of ceramic core material with different thicknesses of veneer ceramic. MATERIAL AND METHODS: Three different ceramic systems were used: IPS Empress (IE), IPS e.max Press (IEP), and Turkom Cera (TC)...
May 12, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28474062/-evaluation-of-the-effect-of-modified-wet-particle-erosion-on-bond-strength-between-3y-tzp-zirconia-framework-and-veneering-porcelain
#9
Jing Guo, Jia Zhu, Hon-Guang Liu, Hong-Shui Zhu
PURPOSE: To evaluate the effect of bond strength between 3mol% yttrium-stabilized tetragonal zirconium polycrystal (3Y-TZP) zirconia framework after modified wet particle erosion and veneering porcelain. METHODS: A total of 174 [8 mm× 8 mm× 3 mm (±0.02)] specimens were prepared and then randomly divided into different groups according to different particle size, sandblasting pressure, sandblasting time through conventional sandblasting (experimental groups); specimens in the control group were not sandblasted...
February 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28459247/conservative-functional-and-esthetic-rehabilitation-of-severe-palatal-erosion-class-iv-using-modified-dahl-approach
#10
Aliasger Tunkiwala, Rajeev Chitguppi
This article demonstrates the clinical application of biomechanical and occlusal principles to conservatively provide optimal clinical outcomes in restoring an eroded anterior dentition. The authors manage a challenging case involving limited palatal clearance (ie, deep bite) coupled with palatal erosion and wear by combining the centric relation (CR) and Dahl principles to create anterior interocclusal space to reduce the need for more invasive palatal reduction. The combined use of adhesive restorations-resin composites on the palatal surface and indirect porcelain veneers on the facial/incisal surfaces-through enamel and dentin bonding helped optimize esthetic and functional/biomechanical aspects...
May 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28386488/esthetic-reconstruction-of-diastema-with-adhesive-tooth-colored-restorations-and-hyaluronic-acid-fillers
#11
Supawadee Naorungroj
Objective. This report presents a comprehensive esthetic treatment with adhesive tooth-colored restorations in a combination with hyaluronic acid (HA) fillers of diastema in an orthodontic patient with relapse. Case Report. A 36-year-old female patient consulted about 1.5-2 mm midline diastema after an orthodontic relapse of replacing missing central incisors with lateral incisors and dark-colored gingival tissue as a result of a metal post and core with porcelain fused to a metal (PFM) crown at the left lateral incisor...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28383305/a-digital-image-correlation-analysis-of-strain-generated-by-3-unit-implant-supported-fixed-dental-prosthesis-an-in-vitro-study
#12
Raniel F Peixoto, Ana P Macedo, Janisse Martinelli, Adriana C Lapria Faria, Rodrigo Tiossi, Ricardo F Ribeiro, Maria da G C de Mattos
OBJECTIVE: To evaluate the influence of different veneering materials (porcelain and resin) and implants (short and conventional) in the strain distribution of implant-supported splinted fixed partial dentures (FPDs) using digital image correlation (DIC). MATERIAL AND METHODS: Four polyurethane models were fabricated with resin replicas (first premolar) and short and/or conventional implants replacing the second premolar and first and second molars, according to the following configurations: G1, 2 conventional (second premolar and first molar) and 1 short (second molar) implant; G2, 1 conventional (second premolar) and 2 short (first and second molar) implants; G3, 3 short implants; G4, 3 conventional implants...
April 5, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28337003/shade-of-resin-based-luting-agents-and-final-color-of-porcelain-veneers
#13
(no author information available yet)
All that is required is three shades of luting cement.
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28280760/the-shear-bond-strength-of-porcelain-laminate-to-prepared-and-unprepared-anterior-teeth
#14
Ali Asghar Alavi, Zeinab Behroozi, Farid Nik Eghbal
STATEMENT OF THE PROBLEM: Porcelain laminate veneer is an esthetic restoration used as an alternative to full veneer crowns and requires minimal tooth preparation. In restoration with porcelain laminate veneers, both the longevity of the laminate and conservation of the sound tooth structure are imperative. PURPOSE: The present study aimed to investigate the shear bond strength of porcelain laminates to prepared- and unprepared- anterior teeth in order to compare their longevity and success rate...
March 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28280757/evaluation-of-the-effect-of-porcelain-laminate-thickness-on-degree-of-conversion-of-light-cure-and-dual-cure-resin-cements-using-ftir
#15
Maryam Hoorizad Ganjkar, Haleh Heshmat, Reza Hassan Ahangari
STATEMENT OF THE PROBLEM: Increasing the thickness of the veneering porcelain may affect the polymerization of resin cements. Incomplete polymerization of resin cements can lead to compromised quality of restoration and decrease the longevity of indirect restorations. PURPOSE: This study sought to assess the effect of IPS Empress porcelain thickness on the degree of conversion of light-cure and dual-cure resin cements using Fourier transform infrared spectroscopy...
March 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28262271/the-impact-of-resin-coating-on-sub-critical-crack-extension-in-a-porcelain-laminate-veneer-material
#16
Xu Cao, Garry J P Fleming, Owen Addison
OBJECTIVES: Characterisation of the interaction between crack extension, crack stabilisation and stress/strain relaxation in the polymeric matrix, the interplay between stress corrosion cracking and the mechanical response of a resin-based luting adhesive within a surface defect population could extend PLV restoration longevity by optimising cementation protocols. The aim was to investigate the influence of stress corrosion cracking and the viscoelastic behaviour of a resin-based luting adhesive independently by controlling the environmental conditions operative during test specimen fabrication...
March 2, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28258266/effect-of-newly-developed-resin-cements-and-thermocycling-on-the-strength-of-porcelain-laminate-veneers
#17
Fawaz I Alqahtani
AIM: The aim of this study was to determine the effect of different luting cements and accelerated artificial aging (AAA) in the fracture resistance of porcelain laminate veneers (PLVs). MATERIALS AND METHODS: A total of 80 disc-shaped specimens were prepared using computer-aided design/computer-aided milling technology from lithium disilicate glass-ceramic blocks. Specimens (0.5 mm thick, 10 mm diameter) were divided into eight groups of 10 specimens per group...
March 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28257219/management-of-a-malpositioned-implant-in-the-anterior-maxilla
#18
Catherine DeFuria, Hans-Peter Weber, Yukio Kudara, Panos Papaspyridakos
The surgical and prosthodontic management of patients with multiple missing teeth in the anterior maxilla can be challenging. The purpose of this clinical report is to illustrate the 2-year outcome after immediate implant placement in unintentional close proximity with the adjacent root. Following uneventful healing, the definitive implant rehabilitation was done with a modified monolithic zirconia framework and porcelain veneers bonded to the framework. The patient's satisfaction with the functional and esthetic outcomes remained high throughout the observation time, with no symptoms or biologic and technical complications...
March 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28216846/three-dimensional-finite-element-analysis-of-the-stress-distribution-pattern-in-a-mandibular-first-molar-tooth-restored-with-five-different-restorative-materials
#19
Kathleen Manuela D'souza, Meena Ajay Aras
INTRODUCTION: Badly broken or structurally compromised posterior teeth are frequently associated with crown/root fracture. Numerous restorative materials have been used to fabricate indirect full-coverage restorations for such teeth. This study aims to evaluate and compare the effect of restorative materials on the stress distribution pattern in a mandibular first molar tooth, under varying loading conditions and to compare the stress distribution pattern in five commonly used indirect restorative materials...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28196165/effect-of-cervical-collar-removal-on-the-fracture-load-of-anterior-zirconia-crowns
#20
Fernanda Campos, Mayra Cardoso, Renata Marques de Melo, Marco Antonio Bottino, Rodrigo Oa Souza
The objective of this study was to assess the influence of the extension of collar and fatigue cycling on the fracture load of anterior zirconia crowns. A total of 60 anterior full-crown preparations (central incisor) were machined in glass fiber-filled epoxy resin. Zirconia copings were designed and milled using computer-aided design/computer-assisted manufacture (thickness: buccal = 0.62 mm, lingual = 0.65 mm, incisal = 0.72 mm). The cervical collars (occlusogingival height = 0.8 mm, buccolingual width = 1...
March 2017: International Journal of Periodontics & Restorative Dentistry
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