Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2023

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 72631 - 72660 of 73500

Full-Text Articles in Entire DC Network

A Kansas City Founder "Proud Of His Position:" Race, Exploitation, And The Rise Of William Gilliss, Diane M. Euston Jan 2023

A Kansas City Founder "Proud Of His Position:" Race, Exploitation, And The Rise Of William Gilliss, Diane M. Euston

Graduate Theses/Dissertations

Americans are largely accustomed to the history of western expansion and enslavement by slaveholders. Questionable government policies led to the removal of Native American tribes further west. In Missouri, French Canadian traders moved to continue their business with them, and eventually, white settlement along the invisible border between Indian Territory and Missouri replaced indigenous peoples. William Gilliss, born in Maryland about 1797, is a prime example of an enterprising trader who, because of his reliance upon Native American tribes, followed his source of income west. His relationships with multiple Native American women resulted in at least three children. His relocation …

Go to article

A Hollow Victory And Unending Problem: The Undying Anti-Russian Insurgency In Ukraine, Abraham Ashley Jan 2023

A Hollow Victory And Unending Problem: The Undying Anti-Russian Insurgency In Ukraine, Abraham Ashley

Graduate Theses/Dissertations

This thesis uses quantitative and qualitative research methods to: (1) explore the base causes of insurgency in Ukraine, (2) examine the historical basis for Ukrainian insurgency, (3) provide historical examples of successful and unsuccessful insurgencies to contrast against Ukraine, and (4) provide recommendations for NATO and Ukrainian policy. Collectively, this project demonstrates that current Russian counterinsurgency tactics will not be successful without significant adjustment. This Ukrainian insurgency may also derail the possibility of peace in the region.

Go to article

Understanding And Advancing College Students' Mathematical Reasoning Using Collaborative Argumentation, Rachel Kay Heili Jan 2023

Understanding And Advancing College Students' Mathematical Reasoning Using Collaborative Argumentation, Rachel Kay Heili

Graduate Theses/Dissertations

This study explored students’ mathematical reasoning skills and offered supports to advance them through a collaborative argumentation framework in a college intermediate algebra class. The goals of this study were to make observations about student reasoning, identify specific actions to address those observations, and document student growth in reasoning as a result of those actions. An iterative analysis, mixed method study was conducted in which the researcher engaged students in responding to questions that required conceptual understandings using a collaborative argumentation framework as a tool to identify and code components of their responses—claim, evidence, and reasoning. After coding and analyzing …

Go to article

Grit, Efficacy, Commitment And Career Planning, Mary Clare Newsham Jan 2023

Grit, Efficacy, Commitment And Career Planning, Mary Clare Newsham

Graduate Theses/Dissertations

This current study advanced understanding of the career goal-setting and relevant goal-related attitudes to the career planning process. Specifically, this study evaluated how career goal commitment, career goal self-efficacy and grit affect career goal structures and effort. A multidimensional career goal commitment scale was developed to differentiate intrinsic (affective) from rational types of commitments. Findings supported affective career goal commitment as consequential to the completeness of career goal structures and in career-relevant effort. Also, career goal self-efficacy was found to predict career planners’ self-efficacy for shorter term performance.

Go to article

Measuring Microaggressions In The Advisor Advisee Relationship: Preliminary Scale Development, Samantha Lynn Bumgardaner Jan 2023

Measuring Microaggressions In The Advisor Advisee Relationship: Preliminary Scale Development, Samantha Lynn Bumgardaner

Graduate Theses/Dissertations

A number of survey instruments exist to measure microaggressions across various contexts and across numerous historically underrepresented groups. However, no such scale exists to assess microaggressions within the advisor-advisee relationship. The academic advisor-advisee relationship can make—or break—a student’s experience at a university, both personally and academically. Thus, microaggressions in the advisor-advisee relationship could impose numerous negative implications, both psychologically and academically. The goal of the present study aimed to develop a psychometrically sound scale to measure microaggressions in this association. Overall, findings from the present study offer preliminary support of a two-factor measure to assess microaggressions within the advisor-advisee relationship …

Go to article

Dynamics And Timescales Of Magmatic Processes At Cerro Uturuncu, Bolivia, Sarah Jane Rasor Jan 2023

Dynamics And Timescales Of Magmatic Processes At Cerro Uturuncu, Bolivia, Sarah Jane Rasor

Graduate Theses/Dissertations

Between 12-25°S latitude there is prolific volcanism fueled by the Altiplano-Puna Magmatic Body (APMB), a mid-crustal magma body above the 30° angle subduction of the Nazca plate and within 60-70 km thick South American crust. Cerro Uturuncu, a stratovolcano constructed above the center of the APMB, can provide insight to the evolution of the APMB over time. Previous research suggests that the APMB is more homogenous near its center as opposed to its edges. However, the processes that led to greater homogenization as well as the structure of the magma body below Cerro Uturuncu remain unknown. This research contributes greater …

Go to article

In Between Lines: An Investigation Of The Ghanaian Migration Experience, Teddy Osei Jan 2023

In Between Lines: An Investigation Of The Ghanaian Migration Experience, Teddy Osei

Graduate Theses/Dissertations

As my socio-cultural experiences continue to evolve, so does my interest in contemporary border discourses. The question of ''who qualifies to be where and how,'' lingers in my mind daily as I reflect on my migration experience as a Ghanaian living in the United States of America. Another area of interest is the social and physical challenges endured by individuals transitioning from one geographic location to another.In replicating these experiences, I make ceramic sculptural vessels associated with sojourning. In my ceramic sculptures, I use specific elements, such as ropes and Ghana must-go bags, which honor Africa's past and its people …

Go to article

Riverine Fish Population Dynamics, Aaron P. Muehler Jan 2023

Riverine Fish Population Dynamics, Aaron P. Muehler

Graduate Theses/Dissertations

Dynamic rate functions (i.e., recruitment, growth, mortality) structure fish populations and are subject to latitudinal differences. These latitudinal differences are likely reflective of climatic variation and may result in spatially distinct populations that must be managed independently, especially in large systems such as the Upper Mississippi River system (UMRS). In order to successfully manage this system, an understanding of what drives these populations is required. The UMRS is useful for this investigation as it crosses 10° temperate latitude with widespread fish species found throughout. In this study, I investigated the synergistic relationship between latitude, vital rates, and abundance. Species were …

Go to article

Quantitative Song Variety In Relation To Genotype In A Hybridizing Chickadee Population, Shelby Madison Palmer Jan 2023

Quantitative Song Variety In Relation To Genotype In A Hybridizing Chickadee Population, Shelby Madison Palmer

Graduate Theses/Dissertations

The Black-capped chickadee (Poecile atricapillus) and Carolina chickadee (P. carolinensis) are North American songbird species that hybridize in a narrow contact zone stretching latitudinally from New Jersey to Kansas, USA. The association between genetic ancestry and song type in this hybrid zone has been studied independently several times and found to be minimal or absent, likely due to the influence of cultural transmission on learned song in the oscine passerine clade to which the chickadees belong. Despite this, the song of both species remains remarkably distinct in allopatry, suggesting a genetic constraint on certain qualities of …

Go to article

The Role Of Interspecific Competition In The Range Collapse Of A Songbird After Rapid Range Expansion, Zachary H. Vickers Jan 2023

The Role Of Interspecific Competition In The Range Collapse Of A Songbird After Rapid Range Expansion, Zachary H. Vickers

Graduate Theses/Dissertations

There is a wealth of evidence demonstrating interspecific competition in birds, but often this evidence is localized and may or may not entirely explain range dynamics over large geographic extents. Bewick’s Wrens (Thrymanes bewickii) and House Wrens (Troglodytes aedon) are small passerine birds of the family Troglodytidae. Previous experimental evidence has demonstrated that Bewick’s Wrens suffer from asymmetric interference competition from House Wrens in Kansas, and this evidence has been cited as the likely reason for the historically recent range collapse of the Bewick’s Wren. However, I argue that localized experimental evidence is insufficient to explain abundance trends over large …

Go to article

A Component Analysis Of Behavior Skills Training To Train School Staff To Implement Noncontingent Attention, Joshua E. Parrish Jan 2023

A Component Analysis Of Behavior Skills Training To Train School Staff To Implement Noncontingent Attention, Joshua E. Parrish

Graduate Theses/Dissertations

As the field of Applied Behavior Analysis expands into multiple disciplines, efficient and effective training becomes an increasingly important aspect of implementing behavior analytic methods and procedures in these additional disciplines. Specifically, as behavior analysis in schools increases, the need for an efficient method of training in implementing behavioral interventions increases due to multiple responsibilities held by school professionals and an occasional high student to teacher ratio. Behavior Skills Training (BST) is among the most researched forms of training for multiple levels of participants in increasing new skills. In evaluating the individual components of BST, effectiveness and efficiency may increase …

Go to article

Growth And Characterization Of Sm3hfbi5, Patrick Lambdin Jan 2023

Growth And Characterization Of Sm3hfbi5, Patrick Lambdin

Graduate Theses/Dissertations

First found experimentally in 2015, topological Weyl materials are desirable compounds that have garnered much interest due to their ability to conduct electricity via their surface states even though the bulk material is a semimetal. Such a candidate, Sm3HfBi5, was discovered with a flux crystal growth method, following an extensive amount of reaction syntheses. This thesis reports on the discovery, growth, structural characterization via x-ray diffraction, and magnetization measurements on Sm3HfBi5.

Go to article

An Action Research Study Exploring Beginning Percussion Students' Music Reading Abilities, Spenser James Cullumber Jan 2023

An Action Research Study Exploring Beginning Percussion Students' Music Reading Abilities, Spenser James Cullumber

Graduate Theses/Dissertations

This action research study explored the effects of rhythmic training, understanding of musical styles, and accompanying as a means to improve the reading and performance accuracies of my sixth-grade percussion students. I designed this study as an adapted modification of Zhukov’s (2006) exploration of how these three teaching methods enhanced college piano players' music reading skills and to improve my own teaching. Participants participated in a week of beginning percussion lessons that focused on these three teaching strategies. Pre-test and post-test results were used to compare the effect of the teaching strategies. Analysis of the results focused on participants ability …

Go to article

Continuity And Contrast In The Strategic Theories Of Four Classic Strategic Thinkers: Sun Tzu, Thucydides, Machiavelli, And Clausewitz, Morteza Safari Jan 2023

Continuity And Contrast In The Strategic Theories Of Four Classic Strategic Thinkers: Sun Tzu, Thucydides, Machiavelli, And Clausewitz, Morteza Safari

Graduate Theses/Dissertations

The purpose of this research paper is to examine the thinking of four classic strategic theorists, namely Sun Tzu, Thucydides, Niccolò Machiavelli, and Carl von Clausewitz, and explore continuity and contrast in their strategic theories. In doing so, this author has structured the paper based on the fundamental architecture of strategy, that is, ends, ways and means. Since the paper specifically addresses military strategy, it first investigates what the ideas of the four theorists are on war as the military means. Then, the paper will explore the theorists’ thoughts on different strategic approaches as ways. Then, the essay will delve …

Go to article

Pulsed Laser Deposition Approach To Metal Organic Thin Film Growth With Thin Film Developments And Applications In Electrochemical Sensing Of Heavy Metal, Jacob A. Berry Jan 2023

Pulsed Laser Deposition Approach To Metal Organic Thin Film Growth With Thin Film Developments And Applications In Electrochemical Sensing Of Heavy Metal, Jacob A. Berry

Graduate Theses/Dissertations

In recent years metal organic frameworks (MOFs), have drawn a lot of attention for their vast and tunable properties. This work is an approach to solve device application issues at the interface of the crystals by introducing a thin-film approach to the self-assembly of the metal organic. The growth using Pulsed Laser Deposition to solve this issue is a novel approach to device and film development. Films have been characterized using Raman spectroscopy, Fourier-Transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray Diffraction, Ellipsometry, laser scanning confocal microscope (LSCM), electrical measurement. Studying the properties of the grown film to compare …

Go to article

A Music Teacher’S Use Of Informances With Primary Level Classes And Study Of Family Attitudes For Music Education: An Action Research Study, Joseph Cooke Emerson Jan 2023

A Music Teacher’S Use Of Informances With Primary Level Classes And Study Of Family Attitudes For Music Education: An Action Research Study, Joseph Cooke Emerson

Graduate Theses/Dissertations

Concerts are often the summative project for the elementary music room. However, the emphasis on concerts creates challenges for music instruction. The preparation for a traditional concert often takes away from instructional time, which is already limited for music instruction. Second, the use of concerts conceals many aspects of the instructional process from students’ families. This results in a limited view and understanding of their child’s formal musical education. By designing opportunities for parents and other stakeholders to see students beyond a traditional concert, I thought that I could help to deepen families understanding of music education in my elementary …

Go to article

Exploration And Synthesis Of Half-Heusler And Disordered Ternary Intermetallic Single Crystals, Md Fahel Bin Noor Jan 2023

Exploration And Synthesis Of Half-Heusler And Disordered Ternary Intermetallic Single Crystals, Md Fahel Bin Noor

Graduate Theses/Dissertations

Due to their distinct physical and chemical characteristics, half-Heusler compounds are intermetallic materials that have undergone substantial research. The general formula for these compounds is XYZ, where X and Y are transition metals and Z is a p-block element. Thermoelectricity is among the half-Heusler compounds' most exciting potential uses, but additional possible applications include spintronics, magnetic refrigeration, and superconductivity, among others. Recently, half-Heuslers (and Heuslers) have emerged as candidates for catalysts for hydrogenation. The CoNbSn half-Heusler compound, as well as another unique intermetallic ternary compound, the disordered Mn4-xCrxAl11, were successfully grown as single crystals …

Go to article

Dnp Final Report: Implementation Of A Prenatal Electronic Education Program To Improve Exclusive Breastfeeding Initiation Rates In New Mothers, Karen Bledsoe Jan 2023

Dnp Final Report: Implementation Of A Prenatal Electronic Education Program To Improve Exclusive Breastfeeding Initiation Rates In New Mothers, Karen Bledsoe

DNP Final Reports

Breastfeeding is accepted as the best source of infant nutrition exclusively for the first six months of life. Because it is important to both mother and infant for long-term health benefits, exclusive breastfeeding at discharge has been a CMS Perinatal Core Measure since 2015. It is essential that hospitals have personnel and programs in place to support breastfeeding mothers to support the Healthy People 2030 goal of exclusive breastfeeding for the first six months of life. COVID-19 changed how the world interacted and medical staff had to use innovative techniques to engage and educate patients virtually since social distancing prohibited …

Go to article

Dnp Final Report: Vascular Access In Burn Patients: An Evidence-Based Practice Project, Amanda Venable Jan 2023

Dnp Final Report: Vascular Access In Burn Patients: An Evidence-Based Practice Project, Amanda Venable

DNP Final Reports

Vascular access in burn patients is a challenging aspect of care that affects the healthcare team and patients daily. The goal in this evidence-based practice project at a southern United States burn center was to improve the quality of the vascular access process by reducing the use of Central Venous Lines (CVL) and unsuccessful venipuncture attempts. The following practice question was formed: In hospitalized burn patients (P), how does a vascular access team with ultrasound-guided peripheral IV capability (I) compared with no vascular access team and standard IV insertion (C) affect central line days (O1) or patient experience (O2) during …

Go to article

Effect Of Proximal Caries-Driven Access On The Biomechanical Behavior Of Endodontically Treated Maxillary Premolars, Engy M. Kataia Jan 2023

Effect Of Proximal Caries-Driven Access On The Biomechanical Behavior Of Endodontically Treated Maxillary Premolars, Engy M. Kataia

Dentistry

Introduction: This study investigated the effects from the carious cavity and access from it on the fracture resistance of endodontically treated maxillary premolars using finite element analysis (FEA). Methods: A maxillary premolar was used to compare three types of access cavity related to having a proximal carious defect: Caries-driven access (CDA), Conservative access that has a mesial component (MCA) as well as traditional access with the same mesial component (MTA). Cyclic loading was simulated on the occlusal surface and number of cycles till failure (NCF) was compared to the intact tooth model (IT). Mathematical analysis was done to evaluate the …

Go to article

Comorbidity Of Hypertension And Chronic Renal Failure And Their Impact On Oral Complications: A Cross-Sectional Study., Dalia Ghalwash, Sara Abdelwahed, Asmaa Abobakr Jan 2023

Comorbidity Of Hypertension And Chronic Renal Failure And Their Impact On Oral Complications: A Cross-Sectional Study., Dalia Ghalwash, Sara Abdelwahed, Asmaa Abobakr

Dentistry

The present study aimed to investigate the influence of both end-stage renal diseases (ESRD) and hypertension (HTN) on the various oral manifestations and periodontal condition, to evaluate and compare the oral manifestations and periodontal health status in hypertensive patients with ESRD versus control, and to explore any possible correlation of the oral findings with systemic disease status. This was a cross-sectional study which included two equal groups of patients, Group I were hypertensive patients with ESRD and Group II were hypertensive patients only. All patients were hypertensive and were on antihypertensive medications. Regarding the incidence of oral lesions in both …

Go to article

Effect Of Overlay Material Type And Design On Fracture Resistance Of Mod Cavities In Molars. (In-Vitro Study), Sara Adel Botros, Mohamed Fouad Haridy, Shaimaa Gad Jan 2023

Effect Of Overlay Material Type And Design On Fracture Resistance Of Mod Cavities In Molars. (In-Vitro Study), Sara Adel Botros, Mohamed Fouad Haridy, Shaimaa Gad

Dentistry

Objective: To evaluate the influence of restoration material type (CAD/CAM lithium disilicate blocks and reinforced composite blocks) and restoration design on fracture resistance of molars with MOD cavities. Methods and Materials: A total of 54 sound human molars were divided into 2 groups (n=9) according to: 1) material type: lithium disilicate CAD/CAM blocks and reinforced composite CAD/CAM blocks; 2) restoration design: overlay with intra-coronal extension or without intra-coronal extension. Additional 18 samples were assigned to positive control group (sound molars, n=9) and negative control group (unrestored MOD cavities, n=9). Standardized MOD cavities were prepared with occlusal width 3 mm, cavity …

Go to article

Implementing The Circular Economy Concept In Construction Supply Chain Management Of Modular Steel Projects, Thet Htar San Jan 2023

Implementing The Circular Economy Concept In Construction Supply Chain Management Of Modular Steel Projects, Thet Htar San

Chulalongkorn University Theses and Dissertations (Chula ETD)

The circular economy is a modern economic model where the value of products, materials, and resources is maintained in the economy as long as possible, whereas the generation of waste is minimized. The current linear take-make-dispose model prevalent in construction supply chain management is increasingly unsustainable, marked by significant resource wastage and environmental impacts. The conventional linear supply chain models in modular steel construction contribute to unsustainable resource utilization and environmental impacts. This research explores the transition from linear to circular supply chain models. We identify key actors, potential barriers, and opportunities for implementing circular economy practices in modular steel …

Go to article

Ultrasound-Assisted Extraction Of Cannabis Sativa And Biological Activities Assessments For Dermatological Application, Pannita Kongtananeti Jan 2023

Ultrasound-Assisted Extraction Of Cannabis Sativa And Biological Activities Assessments For Dermatological Application, Pannita Kongtananeti

Chulalongkorn University Theses and Dissertations (Chula ETD)

Cannabis sativa L. is a medicinal plant that has long been used in Thai traditional medicine and is still widely used today, with many uses in pharmaceuticals, including the treatment of skin infections. It contains a complex mixture of secondary metabolites, including cannabinoids and non-cannabinoid-type constituents, especially detla-9-tetrahydrocannabinol (THC), cannabidiol (CBD), and terpenes. However, fewer studies of cannabis have been reported regarding its anti-aging potential by investigating tyrosinase inhibition activity. In this study, ultrasound-assisted extraction (UAE) of 5 different parts of Cannabis sativa L., the determination of bioactive compounds using GC–MS/MS and the assessment of their biological properties related to …

Go to article

Value-Added Natural Fiber As A Biocompatible Substrate For Chemical Sensor Applications, Wisarttra Phamonpon Jan 2023

Value-Added Natural Fiber As A Biocompatible Substrate For Chemical Sensor Applications, Wisarttra Phamonpon

Chulalongkorn University Theses and Dissertations (Chula ETD)

This dissertation focuses on the improvement and value added of natural fiber extracted from the UHT milk carton waste, and raw silk cocoon to fabricate the biocompatible substrate for chemical sensors, principally in colorimetric and electrochemical sensors, which is allocated in 3 main parts. Initially, the background studying of the surface modification and the function of natural fiber based chemical sensor for food quality control and clinical diagnosis will be explained in a review article. Subsequently, the development of recycled cellulose from UHT milk carton waste as a novel substrate of dual lactate sensor for milk spoilage indication will be …

Go to article

National Survey Of Human Epigenetic Study In Healthy Aged Population In Four Different Regions Of Thailand, Siwaporn Nilyai Jan 2023

National Survey Of Human Epigenetic Study In Healthy Aged Population In Four Different Regions Of Thailand, Siwaporn Nilyai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Healthy ageing has become a goal to help older people maintain good-quality longevity. Researchers have found that epigenetic, environmental, and behavioural lifestyle factors influence the variation of lifespan and healthspan. This study aims to evaluate the age-associated epigenetic biomarkers among older people living in four major regions of Thailand, along with their association with lifestyle and sociodemographic characteristics. 214 participants passed the criteria and enrolled from the southern, northeastern, central, and northern areas of Thailand. Sociodemographic characteristics were recorded through interviews, and blood samples were collected to evaluate blood chemistry and epigenetic markers. SIRT1 and HMGB1 proteins in plasma were …

Go to article

A Comprehensive Study Of African Horse Sickness Outbreak In The Northeastern Region Of Thailand: Outbreak Investigation, Genetic Characterization, And Longitudinal Serological Monitoring, Napawan Bunpapong Jan 2023

A Comprehensive Study Of African Horse Sickness Outbreak In The Northeastern Region Of Thailand: Outbreak Investigation, Genetic Characterization, And Longitudinal Serological Monitoring, Napawan Bunpapong

Chulalongkorn University Theses and Dissertations (Chula ETD)

African horse sickness (AHS) results from infection with the African horse sickness virus (AHSV). The AHSV is a non-contagious and belongs to genus Orbivirus, family Reoviridae and primarily by Culicoides midges. AHS caused the devastating infection in equine population, including horses, ponies, European donkeys, and mules. AHS maintains its occurrence in southern African countries, it may possess threatening impact to the naïve regions such as Asia or Southeast Asia. The objectives of this study are 1) To investigate the emerging AHS outbreak in the Northeastern region of Thailand, 2) To characterize emerged AHSV in Thailand and 3) To monitor serological …

Go to article

The Effect Of Surface Treatment And Types Of Translucent Monolithic Zirconia On The Shear Bond Strength Of Porcelain Repaired To Zirconia, Karnkanith Hansomwong Jan 2023

The Effect Of Surface Treatment And Types Of Translucent Monolithic Zirconia On The Shear Bond Strength Of Porcelain Repaired To Zirconia, Karnkanith Hansomwong

Chulalongkorn University Theses and Dissertations (Chula ETD)

In the event of proximal contact loss in a zirconia crown on an implant, the zirconia crown can be modified by adding porcelain to recreate the proximal contact. This study investigated the shear bond strength between translucent zirconia (4Y-PSZ) and veneering porcelain compared to conventional zirconia (3Y-TZP). Zirconia substructures were treated with airborne-particle abrasion with Al2O3. The results of the shear bond strength test were analyzed by One-way ANOVA and post-hoc comparisons with Tukey’s honest significant difference (HSD) test. The shear bond strengthranged from 21.87 and 27.79 MPa. The failure mode was mixed failure in all groups. From the results, …

Go to article

A Comparison Of Fracture Load After Mechanical Cyclic Loading Between 3 Different Materials And 2 Designs On Implant-Supported Crown : An In Vitro Study, Thanus Liwwattanakorn Jan 2023

A Comparison Of Fracture Load After Mechanical Cyclic Loading Between 3 Different Materials And 2 Designs On Implant-Supported Crown : An In Vitro Study, Thanus Liwwattanakorn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: To compare the fracture resistance among ultra-translucent zirconia, lithium disilicate, and composite resin implant-supported maxillary premolar crowns with cement-retained or combined cement- and screw-retained designs after cyclic loading simulation. Materials and Methods: Forty-eight maxillary first premolar crowns and their abutments were attached on dental implants (ø4.0 x 10 mm) embedded in epoxy resin blocks. All specimens were equally divided into 6 groups (n=8) based on monolithic crown material (ultra-translucent zirconia (Z), lithium disilicate (L), and composite resin (C)) and restoration design (cement-retained and combined cement- and screw-retained). Each specimen was subjected to 500,000 cycles of cyclic loading. Subsequently, a …

Go to article

Effect Of Variations In Translucency Of Cad/Cam Lithium-Disilicate Ceramic And Abutment Color On Optical Color Of Veneer Restoration, Wichaya Likitnuruk Jan 2023

Effect Of Variations In Translucency Of Cad/Cam Lithium-Disilicate Ceramic And Abutment Color On Optical Color Of Veneer Restoration, Wichaya Likitnuruk

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to evaluate the optical color of different translucencies of CAD/CAM lithium-disilicate ceramics on backgrounds with different values. Low translucency (LT) and medium translucency (MT) rectangular-shaped specimens (0.6 mm thickness, shade A1) were fabricated from IPS e.max CAD (EMC; Ivoclar Vivadent) and Amber Mill (AM; HASS). Six specimens of EMC-MT, EMC-LT, AM-MT, and AM-LT were fabricated, resulting in 24 specimens in total. The specimens were placed on six background colors (1M1(reference), 1M2, 2M2, 3M2, 4M2, and 5M2) made of light-cured resin composite (Vita VM LC Base Dentine, Vita Zahnfabrik) using glycerine as a medium. The CIE L*a*b* coordinates …

Go to article

First Prev Next Last