Medicine and Health Sciences Commons^™

Comparison Of Three Different Nickel-Titanium Endodontic Rotary Systems In Shaping Simulated S-Shaped Canals, Elineida Perez

Master's Theses (2009 -)

Introduction: Preparation error may result during mechanical instrumentation because of the complex anatomy of the root canal. Thus, flexibility and resistance to fracture are ideal properties that endodontic instruments should have. The aim of the study was to compare the shaping ability of three different nickel-titanium rotary instruments in simulated S-shape root canals by measuring transportation and canal volume change CVC. Materials and Methods: A total of 60 S-shaped canals in resin blocks were randomly allocated into 3 groups (n=20): Vortex Blue (Dentsply-Tulsa Dental Specialties), HyFlex CM (Coltène/Whaledent) and EndoSequence (Brasseler USA). Canals were filled with dye and secured in …

Genetic And Molecular Analysis Of Dec-11 In C. Elegans' Intestinal Pacemaker Activity, Adele Joan Gordon

Master's Theses (2009 -)

Rhythmic behaviors are ubiquitous phenomena in plant and animal phyla. Ultradian rhythmic behaviors occur with a period of less than 24 hours and include such rhythmic behaviors as the beating of the heart and peristalsis in the gut. The nematode C. elegans exhibits three well-characterized ultradian rhythmic behaviors: ovulation, pharyngeal pumping, and the defecation motor program (DMP). The DMP occurs every ~45 seconds in wild-type worms and comprises three distinct muscle contractions: a posterior body contraction (pBoc), an anterior body contraction (aBoc), and an enteric muscle contraction (Emc), which is coupled to expulsion (Exp). The rhythmicity of the DMP is …

Effect Of Toothbrushing On Surface Roughness And Shade Of Extrinsically Stained Pressable Ceramic Restorations, Lessly Arlette Garza

Master's Theses (2009 -)

The purpose of this study was to investigate the effects of toothbrushing on surface roughness and shade change of extrinsically stained pressable ceramic restorations. Materials and Methods: Two materials, IPS Empress Esthetic and IPS e.max Press, were studied. For each material, 24 disc-shaped specimens, 10mm (diameter) x 3mm (height) were fabricated. Three different methods (n=8) of applying extrinsic stain was performed on each material: Glazed (G): glazed only (control); Stain then Glaze (SG): stained and fired, then glazed and fired. Stained and Glazed (T): glazed and stained together. Samples where brushed using a multi-station brushing machine. Each specimen was brushed …

Effect Of Autoclaving On Flexibility Of Four Different Nickel Titanium Files, Anushree Mehrotra

Master's Theses (2009 -)

Introduction: Nickel-titanium (NiTi) files, introduced over 2 decades ago, have the unique property of superelasticity, are more resistant to fracture and are more flexible than stainless steel files. Recent developments in NiTi include M wire and Controlled/Thermal Memory Technology resulting in files with claimed superior properties to conventional NiTi files. Manufacturers recommend sterilization of files prior to usage. These files may be subjected to further autoclaving if reused. The purpose of this study was to test the effect of multiple cycles of autoclaving on the flexibility of four brands of NiTi files and to evaluate differences between brands. Materials and …

Differential Scanning Calorimetric (Dsc) Study Of New And Sterilized Nickel-Titanium Rotary Endodontic Instruments, Michael Dyriw

Master's Theses (2009 -)

Introduction: Nickel-Titanium (NiTi) files have become popular in endodontic procedures compared to traditional stainless steel hand files owing to their increased flexibility which is especially advantageous in curved canals. Due to the associated costs, endodontic instruments are frequently re-used, which requires sterilization between uses. With the application of temperature NiTi has the ability to undergo phase transformations, altering the properties of the instruments. The purpose of this study was to investigate phase transformations of four brands of NiTi rotary endodontic instruments in the as-received condition and after multiple sterilization cycles under steam sterilization, using differential scanning calorimetry. Materials and Methods: …

Salvage Of Infected Non-Union Of The Tibia With An Ilizarov Ring Fixator, Muhammad Shahid Khan, Haroon Rashid, Masood Umer, Irfan Qadir, Kamran Hafeez, Arshad Iqbal

Department of Surgery Docs

Purpose: To review outcomes of 24 patients who underwent Ilizarov ring fixation for infected nonunion of the tibia.
Methods: Medical records of 21 men and 3 women aged 13 to 74 (mean, 38) years who underwent Ilizarov ring fixation for infected non-union of the tibia were reviewed. The mean bone defect was 3.3 (range, 2-5) cm. The mean time from injury to presentation was 11.9 (range, 1-36) months. The mean number of previous surgeries was 2 (range, 0-14). A local flap was used in 2 patients and a free flap was used in one patient. Nine of the patients underwent …

Point-Of-Care Ultrasonography By Pediatric Emergency Medicine Physicians, American Academy Of Pediatrics, Committee On Pediatric Emergency Medicine, Society For Academic Emergency Medicine,Academy Of Emergency Ultrasound, American College Of Emergency Physicians, Pediatric Emergency Medicine Committee, World Interactive Network Focused On Critical Ultrasound, Gregory P. Conners

Manuscripts, Articles, Book Chapters and Other Papers

Point-of-care ultrasonography is increasingly being used to facilitate accurate abstract and timely diagnoses and to guide procedures. It is important for pediatric emergency medicine (PEM) physicians caring for patients in the emergency department to receive adequate and continued point-of-care ultrasonography training for those indications used in their practice setting. Emergency departments should have credentialing and quality assurance programs. PEM fellowships should provide appropriate training to physician trainees. Hospitals should provide privileges to physicians who demonstrate competency in point-of-care ultrasonography. Ongoing research will provide the necessary measures to define the optimal training and competency assessment standards. Requirements for credentialing and hospital …

The Perception And Employability Of Dental Hygienists With Visible Tattoos, Christina Lynn Cox

Dental Hygiene Theses & Dissertations

Purpose: The aim of this study was to determine if the presence of visible tattoos could hinder employment for dental hygienists. Methods: 1,800 electronic surveys were distributed to licensed dentists in the state of Virginia. Surveys were arbitrarily assigned according to subject's birth month. Participants were shown a photograph of a dental hygienist with one of the three conditions: 1) no tattoo, 2) small tattoo, or 3) large "sleeve" tattoo. Respondents were asked to score the image based on five categories: ethical, responsible, competent, hygienic and professional, using a 5-point Likert scale, ranging from 1 (strongly disagree) to 5 (strongly …

Assessing The Effectiveness Of An Interval Estimation And A Visual-Spatial Secondary Task As Measures Of Mental Workload During Laparoscopy, Levi Parker Warvel

Psychology Theses & Dissertations

The goal of the present study was to compare two secondary workload tasks, specifically a time interval estimation and visual-spatial task, to determine which of these is most appropriate for the assessment of laparoscopic mental workload. Participants performed a peg transfer task in two conditions: a normal camera angle and a 90° camera angle intended to increase mental workload. Based on multiple resource theory, it was predicted the visual-spatial task would be more sensitive to the workload manipulation than the time estimation task because it draws upon the specific, as opposed to more general, attentional resources required by laparoscopy. Primary …

Educational Practices And Attainment Of Competency In The Professional Preparation Of An Athletic Trainer, Julie M. Cavallario

Human Movement Studies & Special Education Theses & Dissertations

The professional education of athletic trainers will continue to evolve as the needs of the profession, and the healthcare system, change. In current educational practices the educational preparation of an athletic trainer can take place at the undergraduate or post-baccalaureate level. Additionally, there are no universally applicable outcome measures for comparison of student performance in the clinical education portion of existing curriculums.

The purpose of this dissertation was to explore the existing education practices, especially relevant to clinical education, currently in place for athletic training (AT) at the professional level. The purpose of the literature review was to historically examine, …

Histological And Immunohistochemical Evaluation Of Biphasic Calcium Phosphate And A Mineral Trioxide Aggregate For Bone Healing In Rat Calvaria, Luis Gustavo Régio De Carvalho Silva, Sung Hyun Kim, Sônia Mara Luczyszyn, Allan Giovanini, Luis Eduardo Almeida, Vinícius Augusto Tramontina

School of Dentistry Faculty Research and Publications

This work focused on the process of bone repair of defects in standardized calvaria of Wistar rats treated with biphasic calcium phosphate (BCP), mineral trioxide aggregate (MTA), or a combination of the two. Eighty Wistar rats were divided into four treatment groups and were examined at 2 and 8 weeks. A surgical defect was created in the calvaria using a 6-mm diameter trephine drill. The cavity was treated with BCP, MTA, or BCP + MTA; untreated rats with clot formation served as controls. Samples were evaluated histologically and by immunohistochemical staining for areas of new osteoid tissue and new bone …

Comparison Of Accuracy And Reproducibility Of Casts Made By Digital And Conventional Methods, Seok-Hwan Cho, Oliver Schaefer, Geoffrey A. Thompson, Arndt Guentsch

School of Dentistry Faculty Research and Publications

Statement of problem

Little peer-reviewed information is available regarding the accuracy and reproducibility of digitally fabricated casts compared to conventional nondigital methods.

Purpose

The purpose of this in vitro study was to compare the accuracy and reproducibility of a digital impression and cast fabrication with a conventional impression and cast fabrication.

Material and methods

Conventional impressions were made via a 1-step single viscosity technique with vinyl siloxanether material of a typodont master model, and conventional casts were cast from dental stone. Digital impressions were obtained with a digital scanner, and digital stereolithographic models were printed. The typodont and fabricated casts …

Surface Modification Of Biodegradable Porous Mg Bone Scaffold Using Polycaprolactone/Bioactive Glass Composite, Mostafa Yazdimamaghani, Mehdi Razavi, Daryoosh Vashaee, Lobat Tayebi

School of Dentistry Faculty Research and Publications

A reduction in the degradation rate of magnesium (Mg) and its alloys is in high demand to enable these materials to be used in orthopedic applications. For this purpose, in this paper, a biocompatible polymeric layer reinforced with a bioactive ceramic made of polycaprolactone (PCL) and bioactive glass (BG) was applied on the surface of Mg scaffolds using dip-coating technique under low vacuum. The results indicated that the PCL-BG coated Mg scaffolds exhibited noticeably enhanced bioactivity compared to the uncoated scaffold. Moreover, the mechanical integrity of the Mg scaffolds was improved using the PCL-BG coating on the surface. The stable …

Facebook For Health Promotion: Female College Students’ Perspectives On Sharing Hpv Vaccine Information Through Facebook, Ni Zhang, Joann Tsark, Shelly Campo, Michelle Teti

Faculty Research, Scholarly, and Creative Activity

Facebook, a social network site, has been widely used among young adults. However, its potential to be used as a health promotion medium has not been fully examined. This study explored Facebook's potential for sharing human papillomavirus (HPV) vaccine information among female college students in Hawai‘i. Culturally tailored flyers and handouts were developed and distributed at one large university in Hawai‘i to recruit female college students between the age of 18 and 26 having an active Facebook account. Three focus group meetings were conducted to gather student perspectives about how information about HPV vaccine may be best shared via Facebook. …

Categorizing Fetal Heart Rate Variability With And Without Visual Aids, Amanda Jane Ashdown

Psychology Theses & Dissertations

This present study examined the ability of clinicians and novices to correctly categorize fetal heart rate (FHR) variability with and without the use of exemplars. Clinicians and undergraduate students were asked to inspect FHR images and determine into which of four categories they belonged. Each participant took part in three conditions: one in which they were provided exemplars of prototypical FHR variability to use during their categorization task, another in which they were provided exemplars of nonprototypical FHR variability to use in their task, and a control condition in which no exemplars were available. The results showed that experts were …

Effect Of An Adaptive Thinking Training Methodology On Critical Thinking Disposition Using Human Patient Simulators: A Catalyst For Preparing Advanced Nursing Students, Robert Joseph Fitkin Jr.

Teaching & Learning Theses & Dissertations

Critical thinking decision making is the foundation for effective, safe, nursing practice. Nurses have to assess patient issues rapidly regardless of whether it is emotional, psychological, or physical, and then sort through "rapid fire" questions resulting in invisible sorting, discerning, and drawing of conclusions. Doing this "invisible sorting" well requires practice. Nursing education provides practice through preceptors or scenarios-driven human patient simulators to practice critical thinking. This study examines Adaptive Thinking Training Methodology with simulation exercises as a possible catalyst for growth in critical thinking disposition, and help in addressing the preparation-practice gap for novice nurses.

A class of advanced …

Quality Of Postoperative Pain Management After Midfacial Fracture Repair—An Outcome-Oriented Study, Gregor F. Raschke, Andre Peisker, Ulrich M. Rieger, Gabriel Djedovic, Arndt Guentsch, Oliver Schaefer, Eric Venth, Marta Gomez-Dammeier, Winfried Meissner

School of Dentistry Faculty Research and Publications

Objectives

There is a lack of literature regarding the procedure-specific quality of acute postoperative pain management after midfacial fracture repair. The purpose of the presented prospective clinical study was to evaluate postoperative pain management after surgical repair of midfacial fractures.

Materials and methods

Eighty-five adults were evaluated on the first postoperative day following midfacial repair using the questionnaire of the Quality Improvement in Postoperative Pain Management (QUIPS) project. The main outcome measures were patients’ characteristics and clinical- and patient-reported outcome parameters.

Results

Overall, pain on the first postoperative day was moderate. A significant correlation between process and outcome parameters could …

Quality Of Postoperative Pain Management After Midfacial Fracture Repair: An Outcome-Oriented Study, Gregor F. Raschke, Andre Peisker, Ulrich M. Rieger, Gabriel Djedovic, Arndt Guentsch, Oliver Schaefer, Eric Venth, Marta Gomez-Dammeier, Winfried Meissner

School of Dentistry Faculty Research and Publications

Objectives

There is a lack of literature regarding the procedure-specific quality of acute postoperative pain management after midfacial fracture repair. The purpose of the presented prospective clinical study was to evaluate postoperative pain management after surgical repair of midfacial fractures.

Materials and methods

Eighty-five adults were evaluated on the first postoperative day following midfacial repair using the questionnaire of the Quality Improvement in Postoperative Pain Management (QUIPS) project. The main outcome measures were patients’ characteristics and clinical- and patient-reported outcome parameters.

Results

Overall, pain on the first postoperative day was moderate. A significant correlation between process and outcome parameters could …

Walking Speed: The Functional Vital Sign, Addie Middletown, Stacy Fritz, Michelle M. Lusardi

All PTHMS Faculty Publications

Walking speed (WS) is a valid, reliable, and sensitive measure appropriate for assessing and monitoring functional status and overall health in a wide range of populations. These capabilities have led to its designation as the “sixth vital sign”. By synthesizing the available evidence on WS, this scholarly review article provides clinicians with a reference tool regarding this robust measure. Recommendations on testing procedures for assessing WS, including optimal distance, inclusion of acceleration and deceleration phases, instructions, and instrumentation are given. After assessing an individual's WS, clinicians need to know what this value represents. Therefore, WS cut-off values and the corresponding …

Optical Diagnostics – Spectropathology For The Next Generation, Malgorzata Baranska, Hugh Byrne

Articles

N/A

Identification Of Candidate Genes For Psychological Resilience To Develop An Additive Genetic Resilience Index: An Integrative Review, Kosuke Niitsu, Julia F. Houfek

Posters and Presentations: College of Nursing

Problem: Most individuals experience at least one potentially traumatic event (PTE), such as tornado, in their lifetime. When exposed to PTEs, some individuals are more vulnerable to psychopathology, such as Posttraumatic Stress Disorder (PTSD). In contrast, other individuals are better able to cope with PTEs and maintain their psychological health. Such individuals are often described as psychologically resilient. Resilience is heritable, influenced by multiple genes including the Serotonin-Transporter-Linked Polymorphic Region (5-HTTLPR), the most studied candidate gene. Because resilience is polygenic, it is important to consider the influence of multiple genes in addition to 5-HTTLPR when studying the heritable component of …

Affective Computing In The Area Of Autism, Niharika Jain

Dissertations (1934 -)

The prevalence rate of Autism Spectrum Disorders (ASD) is increasing at an alarming rate (1 in 68 children). With this increase comes the need of early diagnosis of ASD, timely intervention, and understanding the conditions that could be comorbid to ASD. Understanding co-morbid anxiety and its interaction with emotion comprehension and production in ASD is a growing and multifaceted area of research. Recognizing and producing contingent emotional expressions is a complex task, which is even more difficult for individuals with ASD. First, I investigate the arousal experienced by adolescents with ASD in a group therapy setting. In this study I …

The Effect Of Exercise Training On Skeletal Muscle Gdnf Content And Neuromuscular Physiology In A Mouse Model Of Amyotrophic Lateral Sclerosis., Nicole Carpp

Honors Theses

Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease accompanied by the loss of motor neurons, leading to paralysis and death. Glial cell line-derived neurotrophic factor (GDNF) promotes neuron health and function and has been proposed as a therapeutic treatment for ALS. GDNF protein expression in skeletal muscle is regulated by physical activity. The aim of this study was to determine if low intensity exercise would increase GDNF expression in skeletal muscle and slow degeneration of motor neurons in a mouse model of ALS. Following the first sign of disease onset, transgenic ALS mice were randomly assigned to one of three …

Medication Reconciliation: A New Role To Decrease Discrepancies, Amanda Fougere, Tracie Heckman Msn, Rn, Cmsrn

Patient Care Services / Nursing

No abstract provided.

Hydatid Cyst Of Thoracic Spine: A Rare Cause Of Paraplegia, Rahul Soangra, Mool Chand Soangra

Physical Therapy Faculty Articles and Research

Primary spinal hydatid cysts are uncommon and extradural involvement is rare. We report an unusual case of Paraplegia due to hydatid disease of primary site of infection extra spinal muscles in thoracic region from T5 to T8 level extending into a daughter cyst at T9 level, is main cause of acute Paraplegia. Magnetic resonance imaging (MRI) showed an extradural round cystic lesion in the spinal canal filling the posterior and left postero-lateral expect at T9 level, markedly compressing the cord. The cyst was removed after laminectomy and opening of the dural sac, with excision of extraspinal mass in left paravertebral …

Aggregatibacter Actinomycetemcomitans Cytolethal Distending Toxin Activates The Nlrp3 Inflammasome In Human Macrophages Leading To The Release Of Pro-Inflammatory Cytokines, Bruce J. Shenker, David M. Ojcius, Lisa P. Walker, Ali Zekavat, Monika Damek Scuron, Kathleen Boesze-Battaglia

All Dugoni School of Dentistry Faculty Articles

The cytolethal distending toxin (Cdt) is produced from a number of bacteria capable of causing infection and inflammatory disease. Our previous studies with Actinobacillus actinomycetemcomitans Cdt demonstrate not only that the active toxin subunit functions as a phosphatidylinositol-3,4,5-triphosphate (PIP3) phosphatase but also that macrophages exposed to the toxin were stimulated to produce proinflammatory cytokines. We now demonstrate that the Cdt-induced proinflammatory response involves the activation of the NLRP3 inflammasome. Specific inhibitors and short hairpin RNA (shRNA) were employed to demonstrate requirements for NLRP3 and ASC as well as caspase-1. Furthermore, Cdt-mediated inflammasome activation is dependent upon upstream signals, including reactive …

Is Psychiatry Only Neurology? Or Only Abnormal Psychology? Déjà Vu After 100 Years, Jose De Leon

Psychiatry Faculty Publications

Forgetting history, which frequently repeats itself, is a mistake. In General Psychopathology, Jaspers criticised early 20th century psychiatrists, including those who thought psychiatry was only neurology (Wernicke) or only abnormal psychology (Freud), or who did not see the limitations of the medical model in psychiatry (Kraepelin). Jaspers proposed that some psychiatric disorders follow the medical model (Group I), while others are variations of normality (Group III), or comprise schizophrenia and severe mood disorders (Group II). In the early 21st century, the players' names have changed but the game remains the same. The US NIMH is reprising both Wernicke's brain mythology …

Detection Of Phlpp1Α/Β In Human And Mouse Brain By Different Anti-Phlpp1 Antibodies, Travis C. Jackson, Hülya Bayir, Milos D. Ikonomovic, Keri Janesko-Feldman, Zaichuan Mi, Tianyan Gao, Edwin K. Jackson, Patrick M. Kochanek

Markey Cancer Center Faculty Publications

Pleckstrin homology domain and leucine rich repeat protein phosphatase 1 (PHLPP1) is a member of the serine/threonine family of phosphatases. It has been studied in organs including brain, heart, pancreas, adipose, breast, and prostate. Human PHLPP1 encodes two splice variants - PHLPP1α (~140-150 kDa) and PHLPP1β (~180-190 kDa). Commercial antibodies are widely used to characterize PHLPP1 proteins in cells/tissues. Here we validate five different antibodies to detect PHLPP1α/β by Western blot using PHLPP1 WT/KO mice. All antibodies recognize PHLPP1β in brain. Only a single antibody (Cosmo Bio Co) detects PHLPP1α (~145-150 kDa). The other four antibodies detect a non-specific signal …

Piecing The Puzzle Together With The Use Of Physical Therapy, Mikayla Pruitt

Honors Projects

For my Honors Project I decided to create a set of exercise cards for children with autism. The front of each card had a picture symbolizing the exercise/activity, and on the back included directions, supplies and tips to complete the activity. The following is a selection of a few exercise cards from each of the four exercise sections, as well as the title card, table of contents cards, information cards, and source cards.

Technology And Simulation To Improve Patient Safety., George M. Ghobrial Md, Youssef J. Hamade, Bernard R. Bendok, James Harrop

Department of Neurosurgery Faculty Papers

Improving the quality and efficiency of surgical techniques, reducing technical errors in the operating suite, and ultimately improving patient safety and outcomes through education are common goals in all surgical specialties. Current surgical simulation programs represent an effort to enhance and optimize the training experience, to overcome the training limitations of a mandated 80-hour work week, and have the overall goal of providing a well-balanced resident education in a society with a decreasing level of tolerance for medical errors.