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Articles 1 - 16 of 16
Full-Text Articles in Dentistry
Interleukin-6 Levels In Generalized And Localized Aggressive Periodontitis Patients, Bindu Reddy
Interleukin-6 Levels In Generalized And Localized Aggressive Periodontitis Patients, Bindu Reddy
Theses and Dissertations
AbstractINTERLEUKIN-6 LEVELS IN GENERALIZED AND LOCALIZED AGGRESSIVE PERIODONTITIS PATIENTSBy Bindu Reddy, D.D.S.A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at the Virginia Commonwealth UniversityVirginia Commonwealth University, 2004Major Director: Joseph V. Califano, D.D.S., Ph.D.Associate Professor, Department of Periodontics Periodontitis is an inflammatory disease involving the supporting structures of the dentition. Many studies have shown that there is a relationship between periodontal disease, the presence of pro-inflammatory cytokines, and systemic disease such as cardiovascular disease and diabetes mellitus. The purpose of this study was to measure serum Interleukin-6 levels in generalized and localized aggressive …
Children With Autism Spectrum Disorders: An Investigative Analysis Of Their Access To Dental Care, Chad Wallace Ellsworth
Children With Autism Spectrum Disorders: An Investigative Analysis Of Their Access To Dental Care, Chad Wallace Ellsworth
Theses and Dissertations
Purpose: The purpose of this study was to assess the utilization of dental services for children with autism spectrum disorders and identify barriers these children face when accessing dental services in the state of Virginia. Methods: A survey was mailed to families in the state of Virginia that care for at least one child with the neuro-developmental disorder on the autism spectrum scale. The mailing list was obtained from "The Autism Program of Virginia." This list contains the names of families/guardians of children with autism spectrum disorders. These individuals live throughout the State of Virginia. This project analyzed survey questions …
The Association Between Periodontal Disease And C-Reactive Protein In Patients With A History Of Heart Attack, Robert Lee Fletcher Iii
The Association Between Periodontal Disease And C-Reactive Protein In Patients With A History Of Heart Attack, Robert Lee Fletcher Iii
Theses and Dissertations
The patient population consisted of a maximum of 18,570 subjects who completed the NHANES III questionnaire and examination from 1988 - 1994. The physical examination included such things as body mass index and serum samples, social and medical history. The periodontal examination recorded probing depth, attachment loss and gingival bleeding. Serum samples were analyzed for CRP levels, cholesterol levels etc. Demographic, cardiovascular and oral health variables were compared in subjects with a history of heart attack. Result showed that history of heart attack is associated with increased odds ratio for elevated CRP, diabetes, hypertension, cholesterol, male gender, non-white race and …
Physical And Chemical Properties Of A New Mineral Trioxide Aggregate Material, David Lowell Spencer
Physical And Chemical Properties Of A New Mineral Trioxide Aggregate Material, David Lowell Spencer
Theses and Dissertations
The objective of this study was to compare the time to final set and compressive strength of the white mineral trioxide aggregate (MTA) formulation to the original grey MTA. To test compressive strength, each MTA formulation was placed into Teflon split molds for four hours at 37° Celsius (C) and 100% humidity. Compressive strength of both MTA formulations was measured at 24 hours (n=12) and 21 days (n=19) using an Instron Testing Machine. For determination of time to final set, each MTA formulation (n=6) was placed into a metal mold and maintained at 37° C and 100% humidity while setting. …
Influence Of A 3-Step Disinfection Procedure On Dentin Bond Strength, Maria Pappas
Influence Of A 3-Step Disinfection Procedure On Dentin Bond Strength, Maria Pappas
Theses and Dissertations
Statement of problem. Clinicians have used disinfection materials to remove surface contaminants during cavity preparation. It has been postulated that disinfection materials may negatively affect shear bond strength of restorative materials. If so, large numbers of restorations may be predestined for early failure with the use of a disinfection protocol.Purpose. To determine whether there is a difference in the bond strength between dentin and composite resin with a 3-step disinfection technique compared to a conventional bonding technique without the additional disinfection protocol.Material and Methods. Sixty human molar teeth were sectioned parallel to the occlusal surface to expose mid-coronal dentin and …
Torsional Testing Of Race, K3 And Profile Nickel Titanium Endodontic Files, Sean D. Fessenden
Torsional Testing Of Race, K3 And Profile Nickel Titanium Endodontic Files, Sean D. Fessenden
Theses and Dissertations
Rotary endodontic instruments have different cross sectional designs that may effect their resistance to torsional stress. The purpose of this study is to evaluate the static torsional properties of two nickel titanium files that have recently been introduced for use in endodontics and compare them to the same size Profile instruments. Ten new files of each brand and size were tested. The files tested were: RaCe 25 tip 0.02, 0.04, 0.06 taper, K3 and Profile 25 and 40 tip in 0.02, 0.04 and 0.06 taper. The diameter of each file was measured at 3mm from tip. The last three millimeters …
Pcr Detection Of Streptococcus Mutans And Streptococcus Sobrinus In Dental Plaque Samples From Low, Moderate, And High Caries Risk Children, Ajit A. Patel
Theses and Dissertations
Purpose: The purpose of this study was to correlate the presence of Streptococcus mutans and Streptococcus sobrinus with the incidence of dental caries in children as detected by the polymerase chain reaction (PCR).Methods: Subjects between the ages 2 to 16 years of age were used in this study. After the subjects received a dental examination, dental plaque samples were collected by rubbing a toothpick on the buccal surface of the most posterior tooth in each quadrant of the mouth. Children were grouped into low, moderate, and high caries risk categories by two different Caries Risk Assessment Tools (CAT 1 and …
Factors Influencing Applicant Ranking Of Orthodontic Programs, Michael D. Payne
Factors Influencing Applicant Ranking Of Orthodontic Programs, Michael D. Payne
Theses and Dissertations
Orthodontic programs spend considerable amounts of time and energy to attract, recruit, and interview the best and brightest applicants. Applicants and programs submit ranked preferences, and resident positions are filled by a computerized matching system (Match). The specific aims of this study were to determine the relative importance of certain factors in applicants' Match ranking of orthodontic programs and to determine differences between orthodontic Program Directors perceptions and actual factors cited by applicants influencing their ranking of orthodontic programs.Surveys were mailed to 55 orthodontic Program Directors and 478 applicants participating in the 2002 orthodontic Match. Forty-nine Program Director (89%) and …
Use Of A Portland Cement Accelerator With Mineral Trioxide Aggregate, M. Scott Monts
Use Of A Portland Cement Accelerator With Mineral Trioxide Aggregate, M. Scott Monts
Theses and Dissertations
The use of Mineral Trioxide Aggregate (MTA) is gaining popularity among clinicians. Despite the many ideal qualities it possesses, it is often difficult to manipulate and often requires a second appointment for placement of a restoration to allow for setting. If the time to set of MTA can be accelerated to a single appointment time frame without significantly altering its properties, then MTA may gain even wider acceptance. The purpose of this study is to identify the percentage of a Portland Cement Accelerator (PCA), that when added to MTA, will decrease the time to set of MTA towards a single …
The Prevalence Of The Need For Esthetic Crown Lengthening In Post Orthodontically Treated Subjects, David Clark Johnson
The Prevalence Of The Need For Esthetic Crown Lengthening In Post Orthodontically Treated Subjects, David Clark Johnson
Theses and Dissertations
The problem of excess gingival display is difficult to diagnose and treat. By studying one aspect of excess gingival display, namely the size relationships of the clinical crowns of teeth, we can begin to quantify reasonable goals of therapy. In this study, two hundred plaster models were used as subjects. These represented two hundred patients before and after orthodontic therapy. The six anterior teeth were measured for length and width and compared to known ideals. Teeth that did not meet ideal standards may require treatment. It was found that the mean tooth length after orthodontic therapy was approximately two millimeters …
Bonding Properties Of Newly Erupted And Mature Human Premolars, Diana Marie-Skinner Almy
Bonding Properties Of Newly Erupted And Mature Human Premolars, Diana Marie-Skinner Almy
Theses and Dissertations
Following eruption of a tooth into the oral cavity, enamel is thought to continue to calcify. The continued calcification and maturation of enamel is described as "post-eruptive enamel maturation." It is believed that an observed decrease in enamel pore size and increase in the calcification of enamel matrix over time can be attributed to this process. In recent years, there has been a significant increase in the number of adult patients seeking orthodontic treatment. Since orthodontic attachments are bonded directly to the etched enamel using composite resin, post-eruptive enamel maturation may affect the bonding process. The purpose of this study …
Comparative Tensile Strengths Of Preceramic And Postceramic Solder Connectors Using High-Palladium Alloy, Abdul-Hadi Shehab
Comparative Tensile Strengths Of Preceramic And Postceramic Solder Connectors Using High-Palladium Alloy, Abdul-Hadi Shehab
Theses and Dissertations
Purpose: To evaluate the tensile strength properties of Rx Naturelle Plus and Option (high-palladium) alloys on soldered connectors under simulated preceramic and postceramic soldering conditions. Materials and methods: Eighty cylindrical castings were fabricated (40 using Rx Naturelle Plus alloy and 40 using Option alloy). The 40 castings for each alloy were subdivided into 2 groups of 20 each. In the first group, castings for each alloy were randomly paired and soldered with SMG2 solder to produce 10 preceramic test connector specimens for each alloy. In the second group, castings were similarly paired and soldered with 490 fine solder to produce …
Appointment Keeping Behavior Of Medicaid Vs. Non-Medicaid Orthodontic Patients, Bryan P. Horsley
Appointment Keeping Behavior Of Medicaid Vs. Non-Medicaid Orthodontic Patients, Bryan P. Horsley
Theses and Dissertations
State Medicaid programs were established to care for the poor by eliminating financial barriers and increasing their ability to be treated within the mainstream of the heath care system. The number of children eligible for Medicaid services is increasing, yet the number of Medicaid providers remains low. Health care providers cite failed appointments as being a major problem with Medicaid patients and one of the largest deterrents to participating. The purpose of this study was to determine whether a difference in appointment keeping behavior exists between Medicaid and non-Medicaid orthodontic patients. During a twelve-month period, a tally of appointments was …
C-Reactive Protein Levels In Generalized Aggressive Periodontitis Patients, Trang Nguyen Salzberg
C-Reactive Protein Levels In Generalized Aggressive Periodontitis Patients, Trang Nguyen Salzberg
Theses and Dissertations
Background: There is mounting evidence to indicate that periodontitis may be a risk factor for cardiovascular disease (CVD). Periodontitis may be linked to CVD as either an etiologic mechanism or a predisposing factor that can hasten disease progression. Proinflammatory cytokines, elevated fibrinogen, and platelet aggregation are all potential mechanisms. The purpose of this study is to compare and review the serological differences in subjects with severe periodontitis, some of which involve established risk factors for atherosclerosis, particularly heightened C-reactive protein levels. Methods: A total of 184 subjects, comprising of two periodontal subgroups, non-periodontal (NP = 91) and generalized aggressive periodontitis …
An In Vitro Evaluation Of The Elements Apex Locator Using The Endo Q System, Steven Andrew Brofsky
An In Vitro Evaluation Of The Elements Apex Locator Using The Endo Q System, Steven Andrew Brofsky
Theses and Dissertations
The objective of this study was two-fold: 1) to determine the accuracy of the Elements Apex Locator and 2) to compare the accuracy of the alginate and Endo Q models as in-vitro apex locator testing devices. Twenty teeth were decoronated at the CEJ and triplicate measurements were made using the Elements Apex Locator. All measurements were made to the apex reading of the apex locator. True length was established by visualizing the file tip at the apex with a dental operating microscope. Measurements were then taken with the teeth mounted in an alginate model and then in the Endo Q …
Overbite Correction And Smile Esthetics, Shannon Michelle Lewis
Overbite Correction And Smile Esthetics, Shannon Michelle Lewis
Theses and Dissertations
Achievement of optimum smile esthetics during orthodontic treatment has recently been the focus of several published articles in the orthodontic literature. Authors speculate that overbite correction, specifically maxillary incisor intrusion, will lead to flattening of the smile arc and consequently reduce smile attractiveness. The purpose of this prospective clinical study was to investigate differences in outcomes from two common treatment modalities used to reduce deep overbite: maxillary incisor intrusion using an intrusion arch and posterior tooth eruption using an anterior bite plate. Pre-treatment and post-overbite correction records were gathered from 20 patients who presented with deep overbite malocclusions to the …