Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 103 for “"crowns"”.
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Esthetic Posterior Stainless Steel Crowns and their Relative Shear Strengths
… to evaluate esthetic posterior stainless steel crowns (EP-SSC) and compare their relative shear strengths.Methods: Sixty EP-SSC were compared. 15 crowns from NuSmile® Primary Crowns, Kinder Krowns, and Dental Innovators 1UP and EC Crowns were studied. The crowns were cemented to a typodont tooth …
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Retrospective Study on the Influence of Splinted Crowns of Multiple Adjacent Implants
… evaluate the effects of splinting implant crowns against nonsplinted crowns on the failures and complications of multiple adjacent implants.Material and Methods: A retrospective chart review was conducted of all registered implant patients treated at the University of Minnesota School of …
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Modeling the diameter and locational distributions of branches within the crowns of loblolly pine trees
Crown structure for 9- to 30-year-old loblolly pine was quantified via analysis of branch diameters and location, both along and around the bole, using observational data from 68 trees. The trees analyzed ranged in size from 11.1 to 31.6 cm in DBH and from 8.30 to 25.67 m in height, and were …
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Evaluation of survival and complication rates of monolithic lithium disilicate implant-supported single crowns. A systematic review and meta-analysis.
Σκοπός: Η παρούσα συστηματική ανασκόπηση και μετα-ανάλυση είχε ως στόχο την αξιολόγηση της μακροχρόνιας κλινικής απόδοσης, και συγκεκριμένα των ποσοστών επιβίωσης και επιπλοκών, των μονολιθικών επιμφυτευματικών μονήρων στεφανών από διπυριτικό λίθιο. Υλικά και Μέθοδοι: Πραγματοποιήθηκε αναζήτηση …
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On the Space Filling Nature of Trees: Clarifying and Validating a Model of Plant Architecture With Laser Scans of Tree Crowns
… complexity of branching architecture in tree crowns, and infer the physiological functioning of individuals using allometric theory for the scaling of size and performance. This dissertation is focused on clarifying and validating the West, Brown and Enquist (WBE) model in order to …
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THE EFFECT OF BUILD ANGLES AND POSITIONS IN BUILD PLATFORM ON ACCURACY OF 3D PRINTED SINGLE MOLAR CROWNS USING A DIGITAL LIGHT PROCESSING PRINTER
Digital light processing (DLP) printers are increasingly used in dentistry. However, there is a lack of consensus on the recommended build angle and the effect of varying positions in the build platform has yet to be determined.
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ACCURACY OF SURVEYED CROWN DESIGN DUPLICATION WITH CAD/CAM TECHNOLOGY COMPARED WITH CONVENTIONAL METHODS IN PARTIALLY EDENTULOUS KENNEDY CLASS III ARCH FORM
… PFM crown was replaced by the surveyed study crowns for comparison. 10 PFM crowns were fabricated using a conventional method and 10 Zirconia crowns were fabricated using CAD/CAM method. The vertical position of HOC and crown thicknesses were measured in six spots (MB, B, DB, MP, P , DP) on …
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Application of Preformed Metal Crowns on Class II Carious Lesions on Primary Molars /// Приложение на преформирани метални коронки при втори клас кариозни лезии на временни молари
… treatment and restoration with preformed metal crowns. According to the clinical study the intensity of the caries in Varna is significantly high. The relative share of the aproximal caries in the age of 5-7 years significantly prevails the occlusal caries. The average distribution of the …
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Physiological responses of sun and shade foliage in thinned and unthinned ten-year-old loblolly pine stands
… differ significantly between the upper and lower crowns, even though light levels in the lower crowns of unthinned stands were nearly a third of that in the upper crowns. This had an effect on in situ photosynthetic rates, which were similar in the upper and lower crowns of thinned trees. In situ …
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Evaluation of implant restoration retention on various custom abutment materials and surfaces
Purpose: Clinical use of cement-retained implant crowns requires selecting the appropriate abutment materials, surface characteristics, and cement type, based on finding the right balance between the desired level of retention form and the potential need for retrievability for each patient case. …
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The influence of epiphytes on arthropods in the tropical forest canopy
… abundance and diversity in tropical tree crowns? and (2) what might be the driving forces behind this potential influence? I studied the arthropod fauna of 25 tree crowns bearing different epiphyte assemblages, and the resident fauna of 90 individual epiphytes. I also quantified the …
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Mapping individual trees from airborne multi-sensor imagery
… their application in mapping individual tree crowns is limited by two major technical issues: (a) Multi-sensor imaging requires all images taken from different sensors to be co-aligned, but different sensor characteristics result in scale, rotation or translation mismatches between the images, …
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The comparison of tensile strength of polycarboxylate cement among different surfaces of implant custom abutments
… manufactured lithium disilicate crowns and implant abutments cemented with polycarboxylate cement. Material & Methods A master cast of a maxillary right central incisor single implant restoration from a clinical case was utilized to fabricate five samples of each of five unique …
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Comparative study of the vocalizations and singing behavior of four Aimophila sparrows
… calls were present in the repertoires of Rufous-crowns, Rufous-wings, Cassin's, and Five-stripes, respectively. Songs were sung from the ground, or from a variety of perch heights. Only Cassin's and Rufous-crowns regularly sang flight songs. Cassin's Sparrows sang a higher percentage of flight …
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Mechanical Behavior of Posterior Implant Supported Restorations
… and using two crown designs, hybrid-abutment-crowns and hybrid-abutments with separate crowns. Thirty-two implants were embedded perpendicularly in an auto-polymerizing resin. Thirty-two implant-supported restorations simulating a maxillary first premolar were designed and milled using a …
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Fusion Approaches to Individual Tree Species Classification Using Multi-Source Remotely Sensed Data
… contributed more to tree species with broad crowns, such as honey locust and Austrian pine, whereas textural features were more effective in differentiating trees in narrow crowns, such as spruce. Among all the possible classification schemes based on multi-source features in combinations, …
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Understanding tropical forest dynamics through remote sensing and deep learning
… ranging from the phenology of individual tree crowns to large-scale deforestation. Chapter 1 introduces tropical forests, explores their ecological and societal value, and discusses the technological challenges and opportunities of studying them, with a focus on deep learning as applied to …
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High elastic modulus nanopowder reinforced resin composites for dental applications
… on the market. Among them, all-ceramic dental crowns draw more and more attention and their popularity has risen because of their superior aesthetics and biocompatibility. However, their relatively high failure rate and labor-intensive fabrication procedure still limit their application. In …
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