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https://www.readbyqxmd.com/read/28927921/fabrication-of-removable-palatal-augmentation-prosthesis-on-a-complete-denture-to-reduce-weight-and-maintain-hygiene
#1
Osamu Shimodaira, Yuji Sato, Chie Oonishi, Chihiro Nishioka
A removable veneer-type palatal augmentation prosthesis (PAP) was attached to a complete denture to reduce weight and maintain good hygiene. As a result, the weight of the PAP was reduced from 27.1 g at the time of palatal augmentation, by using the tissue conditioner, to 16.6 g, with the definitive removable veneer-type prosthesis. This method can also be applied to removable partial dentures when the impression of the palatal augmentation is properly positioned on the definitive cast after the removal of the tissue conditioner...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28927393/the-complete-digital-workflow-in-fixed-prosthodontics-a-systematic-review
#2
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/28920187/sub-ablative-er-cr-ysgg-laser-irradiation-under-all-ceramic-restorations-effects-on-demineralization-and-shear-bond-strength
#3
Serdar Bağlar
This study evaluated the caries resistant effects of sub-ablative Er,Cr:YSGG laser irradiation alone and combined with fluoride in comparison with fluoride application alone on enamel prepared for veneer restorations. And also, evaluated these treatments' effects on the shear bond strength of all-ceramic veneer restorations. One hundred and thirty-five human maxillary central teeth were assigned to groups of 1a-control, 1b-laser treated, 1c-fluoride treated, 1d-laser + fluoride treated for shear bond testing and to groups of 2a-positive control(non-demineralised), 2b-laser treated, 2c-fluoride treated, 2d-laser + fluoride treated, 2e-negative control (demineralised) for microhardness testing (n = 15, N = 135)...
September 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28886769/dental-ceramics-for-restoration-and-metal-veneering
#4
REVIEW
Yu Zhang, J Robert Kelly
A survey of the development of dental ceramics is presented to provide a better understanding of the rationale behind the development and clinical indications of each class of ceramic material. Knowledge of the composition, microstructure, and properties of a material is critical for selecting the right material for specific applications. The key to successful ceramic restorations rests on material selection, manufacturing technique, and restoration design, including the balancing of several factors such as residual stresses, tooth contact conditions, tooth size and shape, elastic modulus of the adhesives and tooth structure, and surface state...
October 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/28884029/a-step-by-step-conservative-approach-for-cad-cam-laminate-veneers
#5
Gerardo Durán Ojeda, Ismael Henríquez Gutiérrez, Álvaro Guzmán Marusic, Abelardo Báez Rosales, José Pablo Tisi Lanchares
The use of CAD/CAM technology has allowed the fabrication of ceramic restorations efficiently and with predictable results. Lithium disilicate is a type of glass ceramic material that can be used for the elaboration of laminate veneers, being monolithic restorations which require characterization through a covering ceramic in order to achieve acceptable esthetic results. The next case report shows a predictable clinical protocol for the rehabilitation of the anterior teeth through the preparation of CAD/CAM veneers (e...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28876966/the-effect-of-resin-bonding-on-long-term-success-of-high-strength-ceramics
#6
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/28874990/in-vitro-study-of-the-fracture-resistance-of-monolithic-lithium-disilicate-monolithic-zirconia-and-lithium-disilicate-pressed-on-zirconia-for-three-unit-fixed-dental-prostheses
#7
Jae-Won Choi, So-Yeun Kim, Ji-Hyeon Bae, Eun-Bin Bae, Jung-Bo Huh
PURPOSE: The purpose of this study was to determine fracture resistance and failure modes of three-unit fixed dental prostheses (FDPs) made of lithium disilicate pressed on zirconia (LZ), monolithic lithium disilicate (ML), and monolithic zirconia (MZ). MATERIALS AND METHODS: Co-Cr alloy three-unit metal FDPs model with maxillary first premolar and first molar abutments was fabricated. Three different FDPs groups, LZ, ML, and MZ, were prepared (n = 5 per group)...
August 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28869512/the-application-of-a-novel-ceramic-liner-improves-bonding-between-zirconia-and-veneering-porcelain
#8
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/28862587/modified-peek-as-an-alternative-crown-framework-material-for-weak-abutment-teeth-a-case-report
#9
Panagiotis Zoidis, Eleonora Bakiri, Ioannis Papathanasiou, Anastasia Zappi
This case report describes the fabrication of 3 single crowns for a patient with weakened abutment teeth. The patient exhibited nocturnal bruxism and clenching but refused to use an occlusal appliance. The abutment teeth were endodontically treated and presented with loss of tooth structure and thin axial walls. The patient was seeking a metal-free restoration, and all-ceramic restorations were contraindicated because of the potential for abrasion of the opposing teeth and direct force transmission to the weak abutment teeth...
September 2017: General Dentistry
https://www.readbyqxmd.com/read/28853505/-effect-of-repeated-sintering-and-variations-in-thickness-on-the-color-and-microstructure-of-dental-lithium-disilicate-based-glass-ceramic-veneers
#10
Huang Cui, Yu Jia, Meng Shaofeng, Gao Biyun
Objective The aim of this study is to evaluate the effect of repeated sintering and variation in thickness on the color and microstructure of dental lithium disilicate-based glass ceramic veneers. Methods A total of 24 computer aided design and computer aided manufacturing (CAD/CAM) veneers was fabricated using the IPS e.max-CAD LS2 and then randomly divided into four groups (S0, S1, S2, S3; n=6). Each group was sintered 0, 1, 2, 3 times individually according to the manufacturer's recommendation. The color parameters (L, C, H, a, b values) of all the specimens were measured by a Vita easyshade dental colorimeter...
August 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28852743/load-bearing-capacity-fracture-mode-and-wear-performance-of-digitally-veneered-full-ceramic-single-crowns
#11
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/28845539/long-term-outcomes-of-narrow-diameter-implants-in-posterior-jaws-a-retrospective-study-with-at-least-8-year-follow-up
#12
Jun-Yu Shi, Feng-Yuan Xu, Long-Fei Zhuang, Ying-Xin Gu, Shi-Chong Qiao, Hong-Chang Lai
OBJECTIVE: The aim of this study was to evaluate the long-term survival, complications, peri-implant conditions, marginal bone loss, and patient satisfaction of fixed dental prostheses supported by narrow diameter implants (NDIs) in the posterior jaws. MATERIALS AND METHODS: This study was designed as a retrospective cohort study with a mean follow-up time of 10.1 years (SD: 2.5 years). Patients receiving NDIs in posterior jaw were reviewed. Implant survival, hardware complication, modified plaque index (mPI), peri-implant probing depth (PPD), percentage of bleeding on probing (BOP%), marginal bone loss (MBL), and patient satisfaction were evaluated...
August 28, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28845035/comparative-fracture-behavior-of-monolithic-and-veneered-zirconia-posterior-fixed-dental-prostheses
#13
Carlos Lopez-Suarez, Veronica Rodriguez, Jesus Pelaez, Ruben Agustin-Panadero, Maria J Suarez
The purpose of this study was to evaluate and to compare the fracture load and the fracture pattern of monolithic and veneered zirconia posterior fixed dental prostheses (FDPs). Twenty standardized steel dies were prepared to receive posterior 3-unit FDPs. Specimens were randomly divided into 2 groups (n=10): (1) Lava Zirconia, and (2) Lava Plus. All FDPs were cemented using glass ionomer cement and subjected to thermal and mechanical cycling at 5-55ºC with a 30-s dwell time for 120,000 masticatory cycles...
August 25, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28843882/influence-of-various-bonding-techniques-on-the-fracture-strength-of-thin-cad-cam-fabricated-occlusal-glass-ceramic-veneers
#14
Christine Yazigi, Matthias Kern, Mohamed Sad Chaar
OBJECTIVES: To evaluate the efficiency of immediate dentin sealing and the effects of different bonding protocols on the fracture strength of CAD/CAM occlusal veneers bonded to exposed dentin. METHODS: Ninety-six extracted maxillary premolars were initially divided into three main groups with 32 specimens each: without immediate dentin sealing, immediate dentin sealing/total etching and immediate dentin sealing/selective etching. Teeth were identically prepared in the dentin to receive occlusal veneers of 0...
August 15, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28839415/cervical-and-incisal-marginal-discrepancy-in-ceramic-laminate-veneering-materials-a-sem-analysis
#15
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/28829937/using-cad-cam-modified-correlation-mode-to-produce-laminate-veneers-a-six-month-case-report
#16
Fsf de Siqueira, Afm Cardenas, Y L Gruber, C Kose, Y M Pupo, G M Gomes, Omm Gomes, J C Gomes
The expectation of an esthetically harmonious smile increases the level of difficulty when treating patients. Laminate veneers stand out as a treatment option for cosmetic rehabilitation in clinical practice, as they are a more conservative procedure and mimic dental structures. These laminate veneers are generally made with different techniques; the most common requires an impression of the prepared tooth, an impression antagonist, fabrication models, and extensive laboratory time. The computer-aided design/computer-aided manufacturing (CAD/CAM) system optimizes the fabrication of prosthetic structures, reducing chairside time and promoting good esthetic results...
September 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28829932/amelogenesis-imperfecta-case-study
#17
C Leevailoj, S Lawanrattanakul, K Mahatumarat
Amelogenesis imperfecta (AI) refers to a group of rare genetic disorders that involve tooth development and that are passed down through families as a dominant trait. This condition is characterized by abnormal enamel formation caused by gene mutations that alter the quality and/or quantity of enamel. This dental problem can impact both primary and permanent dentition, varies among affected individuals, and results in esthetic and functional problems. This condition caused the patient in the current case report to have a lack of confidence when speaking...
September 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28806427/fixed-dental-prostheses-and-single-tooth-crowns-based-on-ceria-stabilized-tetragonal-zirconia-alumina-nanocomposite-frameworks-outcome-after-2-years-in-a-clinical-trial
#18
Fabian Hüttig, Jan P Keitel, Andreas Prutscher, Sebastian Spintzyk, Andrea Klink
PURPOSE: This clinical trial tested bilayered restorations based on ceria-stabilized tetragonal zirconia/alumina frameworks veneered with feldspathic ceramic. MATERIALS AND METHODS: A total of 67 crowns and 40 fixed dental prostheses (FDPs) were luted in 57 patients with self-etching/self-adhesive composite resin cement. Dental status and integrity of restorations were evaluated at 2 weeks, 6 months, and then annually. RESULTS: A total of 66 crowns and 36 FDPs (88% posterior) survived for success rates of 93...
August 14, 2017: International Journal of Prosthodontics
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
#19
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
#20
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
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