Medicine and Health Sciences Commons^™

Effect Of Toothbrush Abrasion On Frictional Resistance Of Aesthetic Orthodontic Archwires, Stephen Alexander Yamodis

UNLV Theses, Dissertations, Professional Papers, and Capstones

Fixed orthodontic appliances (braces) are one of the most widely used appliances to correct malocclusion, however many patients prefer less metal display. To meet this demand more esthetically pleasing brackets and archwires have been developed. These esthetic components are often clear, white or tooth colored. Coatings of various types are commonly used to produce an esthetic archwire. However, these coating materials tend to wear and degrade, which may cause binding and increased resistance to friction, thereby potentially reducing the efficiency of tooth movement. Therefore, in vitro testing of tooth brush abrasion on frictional resistance of various aesthetic archwires was tested. …

A Polymerase Chain Reaction Method For The Detection Of Selenomonas Noxia, Arthuro Mehretu

UNLV Theses, Dissertations, Professional Papers, and Capstones

In recent studies, periodontal health has been linked to being overweight and/or obese. Among common oral bacteria, Selenomonas noxia has been implicated in converting periodontal health to disease. Selenomonas spp. have also been found in gastric ulcers, and were misdiagnosed as Helicobacter -like organisms, but no further studies were conducted. The increasing clinical and epidemiological importance of S. noxia necessitates the development of a rapid detection method. In this study, a TaqMan 16S rRNA based real-time Polymerase Chain Reaction (PCR) method was developed, optimized and evaluated for the rapid and specific detection of S. noxia . The 16S PCR assay …

Bacterial Adherence Of Streptococcus Mutans And Lactobacillus Acidophilus On Poly-Methyl Methacrylate And Thermoplastic Polypropene Used In Orthodontic Retention, Lindsay Ann Pfepper

UNLV Theses, Dissertations, Professional Papers, and Capstones

Retention is required in the majority of orthodontic patients throughout the remainder of their life. The two primary removable appliances are known as the traditional Hawley retainer or the vacuum formed retainer. These appliances were developed to maintain the position of the dentition without sacrificing oral health. The orthodontic population is at a higher risk for caries due to plaque accumulation from poor diet, suboptimal oral hygiene and often lack of motivation. These two retainers occupy different niches and are comprised of different materials; therefore the retainers' effect on oral health could be very different. An understanding of which bacteria …

Gingival Crevicular Fluid (Gcf) Levels Of Interleukin-6 (Il-6), Soluble Glycoprotein 130 (Sgp130), And Soluble Interleukin-6 Receptor (Sil-6r) During Orthodontic Tooth Movement, Mathue Gene Faulkner

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: Orthodontic tooth movement requires the precise coordination of a multitude of biological factors in order for proper bone remodeling to occur. Cytokines, such as Interleukin-6 (IL-6), play a critical role in the communication necessary for both bone resorption and bone apposition. IL-6 reacts with receptor proteins, such as soluble IL-6 receptor (sIL-6R), on target cells in order to transmit signals important to both osteoclast and osteoblast activities. Soluble glycoprotein 130 (sgp130), on the other hand, acts as a natural inhibitor to IL-6 activity. The purpose of this investigation was to evaluate the levels of IL-6, sIL-6R, and sgp130 …

Practicing Orthodontists' Use And Perceived Efficacy Of Self-Ligating Brackets, John-David Beuhler

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction.

The purpose of this study was to compare perceptions of efficacy and efficiency of Self-Ligating Brackets vs. conventional brackets between practicing Orthodontists and Orthodontic Residents.

Methods.

Cross-sectional survey research using a three-wave emailing of addresses from the current American Association of Orthodontists directory. The directors of all orthodontic residency programs in the US were asked to also distribute to all residents. The survey included five sections: (1) respondents' experience, (2) factors that influence, (3) positive or negative factors, (4) the perceived efficiency/efficacy, and (5) demographics. A 39% response rate (N=707) was obtained.

Results.

Over half (51.8%) …

Retrospective Investigation Of Course Content Evaluation By Students: A Survey Of Domestic Violence Education And Experience Among Current Unlv-Sdm Dental Students, Rhonda J. Everett

UNLV Theses, Dissertations, Professional Papers, and Capstones

The overall purpose of this research project is to survey experience and education of current dental students regarding domestic violence. Domestic violence has been recognized as one of our nation's most serious public health issues. Domestic violence can result in physical injury, psychological trauma, and sometimes death. Dentists can act as one of the first lines of intervention in recognizing common dental and facial trauma which may be associated with domestic violence victims including: broken teeth, facial bruising, and jaw fractures.

Current data suggest that education about domestic violence can help the dental professional in overcoming some of the barriers …

Retrospective Evaluation Of Microbial Presence In Existing Saliva Repository: A Pcr Based Molecular Survey Of Oral Microbial Populations From Existing Saliva Samples, Jay Ericksen Davis

UNLV Theses, Dissertations, Professional Papers, and Capstones

The overall purpose of this research project is to explore the link between oral health and disease in the University of Nevada, Las Vegas - School of Dental Medicine (UNLV-SDM) clinic patient population. More specifically, the population of interest is the UNLV-SDM orthodontic clinic patient population, which is mostly composed of adults, females, and minorities. The University of Nevada, Las Vegas, School of Dental Medicine, with more than 70,000 active patients and a post-graduate specialty program in Orthodontics is uniquely positioned to perform this type of oral health epidemiology survey, as well as targeted oral microbial testing among populations within …

Exploring Geographic Proximity To Fast-Food Restaurants And Convenience Stores With Dental Caries In Patients At The University Of Nevada Las Vegas School Of Dental Medicine, Charles K. Hill

UNLV Theses, Dissertations, Professional Papers, and Capstones

Dental caries is present worldwide and has afflicted over 90% of all adults in the United States. Biological determinants of the disease are well understood but social determinants and how they interact with biological factors are not. Programs designed to reduce incidence and prevalence of caries often target certain individuals and involve behavioral change. Some programs are more successful when environmental and societal issues are also addressed (Watt, 2002). Biological and behavioral processes leading to caries should include the modification of social factors to enhance results of prevention programs designed to reduce caries in populations. Preventing disease comes not only …

Frictional Resistance Of Aesthetic Orthodontic Arch Wires Compared To Traditional Arch Wires Before And After Toothbrush Abrasion, Stephen Yamodis, Jeremy Manuele, Adam Kessler, Brendan O'Toole, James Mah, Bob Martin

Festival of Communities: UG Symposium (Posters)

Our objective was to compare frictional resistance evident in aesthetic archwires to traditional (non-aesthetic) archwires. Methods: Archwires ligated with elasatics to fixed brackets were pulled through these brackets while frictional resistance (in lbf) was measured. Results: There were no confirmed significant differences between the frictional resistance of the aesthetic arch wires compared to the traditional non-coated wires for all wire sizes tested Conclusions: Our data suggests that a sacrifice of clinical performance with these aesthetic archwires as compared to traditional archwires is not likely