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Direct veneer

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https://www.readbyqxmd.com/read/29628647/evaluation-of-degree-of-conversion-and-the-effect-of-thermal-aging-on-the-color-stability-of-resin-cements-and-flowable-composite
#1
Lúcia Trazzi Prieto, Cíntia Tereza Pimenta de Araújo, Josué Junior Araujo Pierote, Dayane Carvalho Ramos Salles de Oliveira, Erick Kamiya Coppini, Luís Alexandre Maffei Sartini Paulillo
Purpose: The aim of this in vitro study was to evaluate the color stability and degree of conversion (DC) of dual-cure and light-cure cements and flowable composites after thermal aging. Materials and Methods: A total of 50 human incisors were prepared and divided into six groups ( n = 10). Veneers were fabricated using IPS Empress Direct composite resin were bonded with three types of luting agents: Light-cured, conventional dual, and flowable composite according to the manufacturer's instructions...
January 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29584553/ultrathin-cad-cam-ceramic-occlusal-veneers-and-anterior-bilaminar-veneers-for-the-treatment-of-moderate-dental-biocorrosion-a-1-5-year-follow-up
#2
T H Resende, K R Reis, L H Schlichting, P Magne
Dental biocorrosion can produce a devastating impact on oral health. The restorative phase of the treatment should not cause additional damage of the remaining sound tooth structure. Ultrathin occlusal veneers are a conservative alternative to traditional onlays and complete crowns for the treatment of severe biocorrosive lesions. This strategy is explained in the present case report through a full-mouth rehabilitation of a patient with moderate biocorrosion. Maxillary anterior teeth were restored using the bilaminar technique (lingual direct composite veneers with labial ceramic veneers) and posterior teeth using ultrathin CAD-CAM ceramic occlusal veneers...
March 27, 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29487843/management-of-dental-erosion-induced-by-gastro-esophageal-reflux-disorder-with-direct-composite-veneering-aided-by-a-flexible-splint-matrix
#3
Sherin Jose Chockattu, Byathnal Suryakant Deepak, Anubhav Sood, Nandini T Niranjan, Arun Jayasheel, Mallikarjun K Goud
Dental erosion is frequently overlooked in clinical practice. The management of erosion-induced damage to the dentition is often delayed, such that extensive occlusal rehabilitation is required. These cases can be diagnosed by a careful clinical examination and a thorough review of the patient's medical history and/or lifestyle habits. This case report presents the diagnosis, categorization, and management of a case of gastro-esophageal reflux disease-induced palatal erosion of the maxillary teeth. The early management of such cases is of utmost importance to delay or prevent the progression of damage both to the dentition and to occlusal stability...
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29422471/evaluation-of-the-flexural-strength-of-submicron-hybrid-composite-using-different-fabrication-methods-an-in-vitro-study
#4
Achla Sethi, Sameer Makkar, Kanwar Sidharth, Taranjit Kaur, Sukhpash Singh Sandhu, Amit K Joseph
AIM: The aim of this study is to perform three-point bend test on submicron hybrid composite fabricated with direct and indirect veneer technique. MATERIALS AND METHODS: A total of 20 maxillary anterior teeth were selected, and labial reduction of 0.5 to 0.75 mm with a chamfered finish line for veneer preparation was done. Teeth were divided into two groups depending on fabrication technique being used: group I-veneers fabricated with light and group II-veneers fabricated with light and heat (PHOTOPOL)...
February 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29379903/cad-cam-based-chairside-restorative-technique-with-composite-resin-for-full-mouth-adhesive-rehabilitation-of-excessively-worn-dentition
#5
Filippo Del Curto, Carlo Massimo Saratti, Ivo Krejci
Since the first introduction of the Cerec system (Sirona) in the early 1980s, the use of computer-aided design/computer-aided manufacture (CAD/CAM) technology has spread widely in modern adhesive dentistry. Thanks to this innovative technology, it has been possible to carry out chairside restorations fully managed by the clinician, with the advantages of lower costs for the patient, more rapid execution of the restorations, and the exclusion of the provisional phase. With further improvements in chairside technologies and materials, specifically in the field of composite resin blocks, it is now possible to fabricate multiple ultrathin, minimally invasive or even noninvasive restorations in one single appointment...
2018: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/29243683/the-comparison-of-cement-and-screw-retained-crowns-from-technical-and-biological-points-of-view
#6
Aira Ragauskaitė, Gediminas Žekonis, Juozas Žilinskas, Alvydas Gleiznys, Eglė Ivanauskienė, Darius Gleiznys
OBJECTIVE: The aim of this review was to evaluate the most common complications in implant prosthodontics with porcelain-fused-to-metal crowns, to evaluate the influence of biomechanical properties on fractures and cracks of veneered porcelain, and to compare the effects of crowns with different connections on soft tissues. MATERIAL AND METHODS: A search of literature in the English language between 2009 and 2015 was conducted using the following databases: Medline via PubMed, Science Direct, Wiley online library, Taylor& Francis, and Cochrane library...
2017: Stomatologija
https://www.readbyqxmd.com/read/29079354/effect-of-luting-agent-on-the-load-to-failure-and-accelerated-fatigue-resistance-of-lithium-disilicate-laminate-veneers
#7
Marco M M Gresnigt, Mutlu Özcan, Marco Carvalho, Priscilla Lazari, Marco S Cune, Peywand Razavi, Pascal Magne
OBJECTIVE: The aim of this study was to investigate the influence of the luting agent on the application of laminate veneers (LVs) in an accelerated fatigue and load-to-failure test after thermo-cyclic aging. METHODS: Sound maxillary central incisors (N=40) were randomly divided into four groups to receive LVs (Li2 Si2 O5 ) that were adhesively bonded: Group CEMF: Adhesive cement (Variolink Esthetic LC), fatigue test; Group CEMLF: Adhesive cement, load-to-failure test; Group COMF: Resin composite (Enamel HFO), fatigue test; Group COMLF: Resin composite, load-to-failure test...
December 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29042725/the-effect-of-polymerization-and-preparation-techniques-on-the-microleakage-of-composite-laminate-veneers
#8
Neslihan Celik, Merve Iscan Yapar, Numan Taşpınar, Nilgun Seven
BACKGROUND: Marginal leakage is the important factor influencing the maintenance of dental esthetic. AIM: The purpose of this study was to evaluate the relationship between the preparation techniques and type of polymerization techniques on microleakage of composite laminate veneers. MATERIALS AND METHODS: Ninety-one same sized, caries-free human maxillary central incisors were randomly assigned to 13 groups ( n = 7) and were designed with four different preparation techniques (window type, feather type, bevel type, and incisal overlap type)...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28969282/influence-of-post-angulation-between-coronal-and-radicular-segment-on-the-fracture-resistance-of-endodontically-treated-teeth
#9
Satheesh B Haralur, Anas Abdullah Lahig, Yahya Ahmed Al Hudiry, Abdullah Hassan Al-Shehri, Ahmed Abdullah Al-Malwi
INTRODUCTION: The objectives of coronal restoration in the Endodontically Treated Teeth (ETT) include rehabilitation of aesthetics, function and prevention of coronal leakage. The long axis of root and the coronal segment in the maxillary anterior teeth varies according to the occlusal scheme. The restorative dentist is required to fabricate the post angulation in compatibility to contour of the adjacent teeth. AIM: To evaluate the influence of the angle between the long axes of core facial surface and the radicular segment of the post on fracture resistance of ETT...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28955597/treatment-approaches-for-traumatized-anterior-teeth-with-excessive-tissue-loss-three-case-reports
#10
Zuhal Yildirim, Omer Yavuz Gomec
Use of direct composite and indirect laminate veneers has been an alternative to metal- and all-ceramic crowns for anterior teeth restorations. Dental traumas are the most common reasons for excessive tissue loss. Treatment options depend on the amount of remaining tissue, the extent of the damage to dental pulp and periapical tissues and the time elapsed before dental treatment. The aim of this case report was to evaluate the direct and indirect techniques used in the treatments of traumatically fractured anterior teeth...
2017: Journal of Istanbul University Faculty of Dentistry
https://www.readbyqxmd.com/read/28862587/modified-peek-as-an-alternative-crown-framework-material-for-weak-abutment-teeth-a-case-report
#11
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/28750231/settlement-patterns-of-the-coral-acropora-millepora-on-sediment-laden-surfaces
#12
Gerard F Ricardo, Ross J Jones, Mikaela Nordborg, Andrew P Negri
Successful recruitment in corals is important for the sustenance of coral reefs, and is considered a demographic bottleneck in the recovery of reef populations following disturbance events. Yet several factors influence larval settlement behaviour, and here we quantified thresholds associated with light attenuation and accumulated sediments on settlement substrates. Sediments deposited on calcareous red algae (CRA) directly and indirectly impacted coral settlement patterns. Although not avoiding direct contact, Acropora millepora larvae were very reluctant to settle on surfaces layered with sediments, progressively shifting their settlement preference from upward to downward facing (sediment-free) surfaces under increasing levels of deposited sediment...
December 31, 2017: Science of the Total Environment
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
#13
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/28653047/noninvasive-bilaminar-cad-cam-composite-resin-veneers-%C3%A2-a-semi-in-direct-approach
#14
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
#15
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/28590838/comparative-evaluation-of-effects-of-laser-modalities-on-shear-bond-strengths-of-veneering-porcelains-to-laser-sintered-substructures-an-in-vitro-study
#16
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/28586234/the-direct-indirect-technique-for-composite-restorations-revisited
#17
André V Ritter, Newton Fahl, Marcos Vargas, Rodrigo R Maia
In the direct-indirect composite technique, composite is applied to a nonretentive tooth preparation (eg, a noncarious cervical lesion or a veneer/inlay/onlay preparation) without any bonding agent, sculpted to a primary anatomic form, and light-cured. The partially polymerized restoration is then removed from the preparation and finished and tempered extraorally chairside. The finished inlay is bonded to the preparation using a resin-based luting agent. Advantages of this technique include enhanced physical and mechanical properties afforded by the extraoral chairside tempering process because of increased monomer conversion, and greater operator control over the final marginal adaptation, surface finishing and polishing, and anatomy of the restoration, given that these elements are defined outside of the patient's mouth...
June 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28509509/fracture-of-zirconia-abutment-with-metallic-insertion-on-anterior-single-titanium-implant-with-internal-hexagon-retrieval-analysis-of-a-failure
#18
Marco Antonio Bottino, Regina Furbino Villefort Rocha, Lilian Costa Anami, Mutlu Özcan, Renata Marques de Melo
This case report presents a retrieval analysis of a screw-retained one-piece restoration with the veneering ceramic fired directly onto the zirconia abutment that fractured during insertion. A patient who experienced root fracture of a maxillary left central incisor received a titanium implant on the same day as extraction. After delayed implant loading, a two-piece zirconia abutment with metallic insertion was customized. Upon installation, a horizontal fracture of the crown just above the metallic portion was detected...
September 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28484652/esthetic-rehabilitation-with-direct-composite-veneering-a-report-of-2-cases
#19
Kyatham Sowmya, K S Dwijendra, V Pranitha, Konda Karthik Roy
Esthetic or cosmetic dentistry is one of the main areas of dental practice. Increasing demand of patients for esthetics has resulted in the development of several techniques for restoring the anterior teeth. Composite resin restorations have become an integral part of contemporary restorative dentistry and can be called "star of minimal invasion" due to its conservative concepts. The direct composite veneering allows restoring the tooth in a natural way and preservation of sound tooth structure when compared to indirect restorations...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28440007/spectrophotometric-analysis-of-fluorescent-zirconia-abutments-compared-to-conventional-zirconia-abutments-a-within-subject-controlled-clinical-trial
#20
Daniel S Thoma, Felix B Gamper, Vítor M Sapata, Giuseppe Voce, Christoph H F Hämmerle, Irena Sailer
BACKGROUND: Zirconia abutments are frequently used for implant-supported single crowns. Even though demonstrating esthetic benefits compared to metal abutments, zirconia abutments lead to an increased brightness of the peri-implant mucosa compared to natural teeth and are not ideal from an esthetic point of view. PURPOSE: To test whether or not a fluorescent hybrid zirconia abutment offers superior esthetics compared to a non-fluorescent one-piece zirconia abutment based on spectrophotometric analysis...
April 24, 2017: Clinical Implant Dentistry and related Research
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