2 edition of Factors affecting the performance of composite luting cements within the oral cavity. found in the catalog.
Factors affecting the performance of composite luting cements within the oral cavity.
Mohamed Abd El-Mageed Awad
Thesis (Ph.D.), - University of Manchester, Dental School.
|Contributions||University of Manchester. Dental School.|
|The Physical Object|
|Number of Pages||276|
Objectives. To evaluate the surface hardness of two light-cured resin cements polymerized under different ceramic discs. Methods. 40 experimental groups of 2 light-cured resin cement specimens (Variolink Veneer and NX3) were prepared and polymerized under 5 different ceramic discs (IPS Press HT, LT, MO, HO, and Cercon) of 4 thicknesses (, , , and mm), Those Clinical Performance of Posterior Microhybrid Resin Composite Restorations Applied Using Regular and High-Power Mode Polymerization Protocols According to USPHS and SQUACE Criteria: Year Randomized Controlled Split-Mouth Trial Cerutti, Antonio / Barabanti, Nicola / Özcan, Mutlu?doc=toc&year=&issue=4.
The manifold uses of dental cements-as (a) luting agents, (b) cavity linings and bases, and (c) restorations for teeth—make them perhaps the most important materials in clinical dentistry. The research of the last 10 years has resulted in four main types, classified by matrix-forming species: (1) phosphate, (2) phenolate, (3) polycarboxylate The stages of fitting and cementation of crowns are considered including: Crowns and extra-coronal restorations: Having successfully negotiated the planning, preparation, impression and
In the oral cavity, composite resin restorations are continuously exposed to chemical agents present in saliva, food, and drinks, which can contribute to degradation of the organic matrix. 27 Several factors influence the absorption of oral fluids by composites, for example, hydrophilicity of the polymer matrix, density of the composite filler 1. Introduction. Effective restoration of endodontically treated teeth (ETT) is a constant challenge to clinicians. ETT restoration is complex due to multiple factors involved, like remaining coronal tooth structure, apical seal, radicular dentin thickness and the deleterious effect of root canal irrigants .The iatrogenic root canal perforations are the main cause of treatment failure and
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In the retentive ability of two dental luting cements. J Oral. Rehabil – 8. Kay GW, Jablonski DA, Dogon IL () Factors affecting the Factors affecting the ﬁlm thickness of zinc The aim of this study was to evaluate the effect of different factors on the push-out bond strength of glass-fiber posts luted in simulated (standard) root canals using different composite cements.
The hypotheses tested were that (1) the type of fiber post, (2) the type of composite cement, (3) the type of post-surface pre-treatment, and (4 The Effect of Accelerated Aging on the Colour Stability of Composite Resin Luting Cements using Different Bonding Journal of Clinical and Diagnostic Research.
Apr, V ol(4 Awad MA (): Factors affecting the performance of composite luting cements within the oral cavity. PhD thesis, University of Manchester, UK. Mahrous MA and Awad MA (): Shear bond strength of cobalt chromium casted restorations to gallium and amalgam core materials using different luting cements.
Egyptian Dental Journal 47 (3): Web view. Resin composite cements are used in dentistry to bond ceramic restorations to the tooth structure.
In the oral cavity these cements are subjected to aging induced by masticatory and thermal stresses. Thermal cycling between 5 and 55 °C simulates the effect of varying temperatures in vitro.
Purpose of this study was to compare indirect tensile to compressive strength of different cements A laboratory and clinical evaluation of three dental luting cements The loss of material from specimens of three luting cements was measured after continuous erosion cycling in the laboratory.
The glass ionomer luting cement showed significantly less material loss than the zinc polycarboxylate and zinc phosphate luting cements. :// Permanent cements are luting agents that are used for the long-term cementation of cast restorations such as inlays, crowns, bridges, laminate veneers, and orthodontic fixed appliances.
As discussed in Chap permanent indirect restorations, such as those produced from gold and ceramic, are designed and cast by a dental laboratory :// A principal determinate in the long-term success of these restorations is the strength and durability of the interface.
11 This adhesive joint consists of a complex bond, which includes three interfaces:tooth-resin interface, resin-luting resin interface, and the luting resin-composite interface.
Several factors that influence this adhesive Factors affecting retention that should be taken into consideration while preparation. The completed reduction of the incisal edge on an anterior tooth should allow 2mm of adequate material thickness to permit translucency in the completed ://?id= Most Class I amalgams will last years, and class II will last years.
We always want to remember the patient's diet and oral hygiene play an important role of the life expectancy of any restoration. If they have good oral hygiene it will last longer, poor oral hygiene equals shorter :// Review.
According to the conclusions of a recent review by Dietschi et al., 4 in the restoration of endodontically treated teeth the approach has evolved from a totally empirical level to the current application of biomechanical concepts to guide the decision‐making process.
Primarily, preservation of tooth tissue, presence of a ferrule effect, and adhesion are regarded as the most effective Factors Affecting Depth of Cure Ernst et al. (), showed that in Class II cavities with deep proximal boxes reaching into the dentin, the first increment of composite at the gingival floor must be irradiated with a device providing mW/cm2 for at least 40 s.
If a unit emitting mW/cm2 is used, 20 s of polymerization suffices to Emel Karaman, Busra Keskin, Ugur Inan, Three-year clinical evaluation of class II posterior composite restorations placed with different techniques and flowable composite linings in endodontically treated teeth, Clinical Oral Investigations, /sy, 21, 2, (), ().
Objective: The aim of this in-vitro study was to investigate the effects of frequently consumed beverages on the color stability and microhardness of various restorative als and Methods: Twenty-four samples were prepared in each group to examine the effect of different beverages on coloration and surface hardness of two direct composite resins (Filtek Z, Filtek Z); one ?issn=;year=;volume=23;issue=3;spage=.
Dowel space preparation and cementation was done one week after obturation. Luting cements used were Pana ketac-cem glass ionomer cement, zinc phosphate and parapost composite. Results showed that Panavia 21 cement demonstrated significantly greater retention than zinc phosphate and parapost composite Web view.
Resin matrix dental materials undergo contraction and expansion changes due to polymerization and water absorption.
Both phenomena deform resin-dentin bonding and influence the stress state in restored tooth structure in two opposite directions.
The study tested three composite resin cements (Cement-It, NX3, Variolink Esthetic DC), three adhesive resin cements (Estecem, Multilink Automix The aim of this in vitro study was to evaluate the adhesion strength of two new fiber post systems (FiberSite™ Post and Cytec™ Blanco Post) cemented with two different adhesive resin cements (Panavia™ SA and Maxcem™ Elite).
Root canals of sixty extracted human mandibular premolars were prepared using ProTaper Universal™ rotary files (Dentsply Sirona Endodontics, York, PA, USA). The aim of this study was to review and summarize the in vitro and clinical data on the use of glass-fiber posts concerning recent changes in the philosophy, materials, and technology that have impacted significantly the art and science of endodontic post placement.
Original scientific papers or reviews listed in the Medline or ISI Web of Science databases from to were searched both physical and chemical factors. Physical factors, such as occlusal chewing forces and repetitive expansion and contraction stresses caused by temperature changes within the oral cavity have been proposed as affecting the inter-facestability,17 Acidic chemical agents in dentinal ﬂuid, saliva, food, beverages, and bacterial products However, the indirect composite restorations luted with Maxcem Elite exhibited 86% pre-test failures.
A relatively poor bonding ability to dentin had been reported for Maxcem, the previous version of Maxcem Elite, when it was used for luting composite, ceramic or zirconia, as well as the occurrence of many pre-test failures (13,22).
The causative factors that lead to microfracture and, hence, failure of the luting agents are the stresses acting inside the oral cavity. Therefore, the present study was designed to develop an understanding of the relationship between stresses in the tooth and the failure potential of the luting Largely used for highly esthetic restorations, these posts typically are bonded with resin luting cements and utilize composite cores.
In vitro studies have indicated that these posts are not as strong as conventional posts3 and manufacturers caution that they should not be used where remaining tooth structure is less than ideal or where high occlusal forces are › 百度文库 › 语言/资格考试.Longitudinal results of a clinical investigation have shown that the performance of ceramic inlays luted with a light-curing composite was comparable to inlays luted with dual-cure resin cements after eight years of observation Four years later, a significant difference was detected between luting techniques in which a significantly higher //Degree-of-Conversion-of-Luting-Resins-Around.