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Effects Of Sealant And Self Etching Primer On Enamel Decalcification In Vivo, Matthew A. Ghiz
Effects Of Sealant And Self Etching Primer On Enamel Decalcification In Vivo, Matthew A. Ghiz
Graduate Theses, Dissertations, and Problem Reports
Self etching primer (SEP) saves valuable time by eliminating the multiple steps required to place a sealant prior to bonding brackets. The purpose of this study is to compare the resistance to demineralization between SEP and a conventional sealant. 25 patients were bonded with either SEP or Sealant using the split arch technique. At the end of the observation period (18--24 months), the plaque index and decalcification scores were noted. Data was analyzed using ANOVA and Tukey Kramer test. Significantly higher decalcification score was found with the SEP group as compared with the Sealant Group (p < 0.001). Significant difference was also found between the level of hygiene compliance and decalcification (p < 0.0001). Patients with fair or poor hygiene compliance have higher decalcification scores with SEP as compared to Sealant. These results suggest that application of a self etching primer saves chair time but provides less resistance to enamel demineralization as compared to a conventional sealant.
Coronal Microleakage Of A Dentin Bonding Agent When Used In The Presence Of A Eugenol Containing Endodontic Sealer, Jeffrey G. Minchau
Coronal Microleakage Of A Dentin Bonding Agent When Used In The Presence Of A Eugenol Containing Endodontic Sealer, Jeffrey G. Minchau
Graduate Theses, Dissertations, and Problem Reports
The propose of this dye and SEM study was to evaluate the cleansing capabilities of two solvents ethyl alcohol and chloroform, prior to dentin bonding in the coronal chambers of endodontically treated teeth obturated with either a eugenol or resin-based sealer. A total of 156 extracted human molar teeth were divided into 6 groups and obturated with either a eugenol-based (Roth's, Grossman), or a resin-based (AH Plus, Kerr) endodontic sealer. Samples were thermocycled and placed into India Ink or silver nitrate for (SEM samples). All teeth were cleared and evaluated for coronal microleakage. A significant difference was found between the …
Linear Expansion Of Dental Stone After Its Final Set And Beyond Two Hours, Marcos Cid Galano
Linear Expansion Of Dental Stone After Its Final Set And Beyond Two Hours, Marcos Cid Galano
Graduate Theses, Dissertations, and Problem Reports
When accuracy and strength are required in fabricating working casts improved dental stones are recommended. The main variable affecting this accuracy is linear setting expansion. In this research study the linear setting expansion of three commonly used improved dental stones were compared over an extended 2-week period. Hard Rock, Silky Rock and Prima-Rock were vacuum mixed following manufacturers instructions. Five specimens of each stone were measured for linear expansion using a SAM EMI100 Expansion measuring Device. Expansion measurements were made at 10 and 30 minutes, 2, 24, 48, 72, and 120 hours. The gathered data were subjected to a two …
Impact Of Early Childhood Perceptions And Experiences On Oral Health Practices In Later Life, Johnna Marie Guzzi
Impact Of Early Childhood Perceptions And Experiences On Oral Health Practices In Later Life, Johnna Marie Guzzi
Graduate Theses, Dissertations, and Problem Reports
Older adults are at a higher risk for numerous oral and systemic diseases. Oral conditions experienced by the elderly are believed to be cumulative. The purpose of this study was to determine if a relationship exists between early childhood dental care practices/experiences and perceived oral health needs of persons 60 years of age and older who are participants of three West Virginia facilities for the elderly (N = 90). Individuals were interviewed utilizing a two-part 21-item survey. Data analyses, including analysis of variance and tests of chi square, were conducted using the JMP program. Although individuals felt dental health was …
Evaluation Of Two Reference Planes To The Horizon In The Natural Head Position, David M. Allport
Evaluation Of Two Reference Planes To The Horizon In The Natural Head Position, David M. Allport
Graduate Theses, Dissertations, and Problem Reports
Dental casts are mounted to dental articulators using anatomical records in order to simulate and duplicate static and dynamic interocclusal relationships. The three dimensional relationship of the maxillary arch to the transverse horizontal axis of the mandible is defined by establishing a third point of reference. The purpose of this study was to examine the relationship of the Frankfort horizontal plane and the HIP plane to the horizontal when the patient is in the natural head position. Ten subjects were evaluated in the natural head position with angular measurements made from lateral photographs and lateral skull radiographs to determine the …
Herbal Supplement Education In Dental Hygiene Curricula, Lisa Elena Lisauckis
Herbal Supplement Education In Dental Hygiene Curricula, Lisa Elena Lisauckis
Graduate Theses, Dissertations, and Problem Reports
While there is evidence in the literature of herbal supplement education in other disciplines, inclusion in dental hygiene curricula is not reported. The purpose of this study was to assess the prevalence and extent of herbal supplement education in the 256 accredited dental hygiene programs in the United States. A survey was sent to program directors. Data analyses, including frequencies, cumulative frequencies, percentages, analyses of variance, and test of Chi Square were conducted using JMP program. Surveys revealed 63% of respondents (n = 160) included herbal supplement education and primarily incorporated it in the pharmacology course (67%). Statistically significant differences …
Perceived Efficacy And Utilization Of The Oralcdx Brush Biopsy, Courtney Niccole Huffman
Perceived Efficacy And Utilization Of The Oralcdx Brush Biopsy, Courtney Niccole Huffman
Graduate Theses, Dissertations, and Problem Reports
The OralCDx is a preliminary screening tool developed to identify suspicious lesions. Despite large numbers of persons diagnosed with oral cancers annually, minimal research has been conducted on the efficacy and utilization rates of OralCDx. The purpose of this study is to determine perceived efficacy and utilization rates of OralCDx nationwide. A 16-item survey was used to survey a random sample of 100 dentists and a 6-item survey was used to survey a random sample of 400 patients. Data analyses were conducted using frequencies, cumulative frequencies, percents, analysis of variance, and tests of chi-square using the JMP program. Preliminary results …
Investigation Of Frictional Resistance On Orthodontic Brackets When Subjected To Variable Moments, Edward Mah
Investigation Of Frictional Resistance On Orthodontic Brackets When Subjected To Variable Moments, Edward Mah
Graduate Theses, Dissertations, and Problem Reports
Friction and binding occur in orthodontics during sliding mechanics. This paper evaluated the influence of a variable moment, simulating mastication, placed at the bracket-archwire interface to determine its effects on friction. Friction of self-ligating brackets were also compared to stainless steel and ceramic brackets. Six archwires were combined with four brackets. Friction (static, kinetic and dynamic) and load (dynamic and apparent stiffness) were measured. Dynamic friction was the frictional force that occurred when the applied force was variable (dynamic load). The results showed that static and kinetic friction were similar while dynamic friction was statistically greater. The Minitwin and Transcend …
Curriculum Alternatives In Graduate Dental Hygiene Education, Jennifer Hubbard Grilli
Curriculum Alternatives In Graduate Dental Hygiene Education, Jennifer Hubbard Grilli
Graduate Theses, Dissertations, and Problem Reports
The nursing profession has designed a variety of curriculum options for individuals who wish to pursue graduate education in nursing. These options have been created to meet the changing needs of their profession, society, and potential students in the field. The profession of dental hygiene has similar needs. Presently there are only nine programs granting graduate degrees in dental hygiene. More graduate programs are needed to fulfill the future demands for educators, researchers, and practitioners with the knowledge and skills necessary to provide advanced levels of care in a variety of practice settings. Unfortunately, a mean of only 20 students …
Skeletal And Dental Changes With The Acrylic Splint Herbst Appliance, Jorge Clemente Casellas
Skeletal And Dental Changes With The Acrylic Splint Herbst Appliance, Jorge Clemente Casellas
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was to determine the amount of skeletal and dental cephalometric changes of Class II patients treated with acrylic splint Herbst appliance. The sample consisted of one experimental group and one control group. These patients were matched in sex, age and craniofacial morphology. The cephalometric system described by Pancherz was used to determine the cephalometric changes. Significant differences in skeletal and dental changes were found in patients treated with the acrylic splint Herbst when compared with the control group. An overjet correction of 4.6 mm and a molar relation correction of 5.6 mm were obtained. The …
Evaluation Of Microleakage Of Rsa Roekoseal Automix Root Canal Sealer, Neil Thomas Miller
Evaluation Of Microleakage Of Rsa Roekoseal Automix Root Canal Sealer, Neil Thomas Miller
Graduate Theses, Dissertations, and Problem Reports
The sealing ability of RSA Roekoseal Automix root canal sealer using ThermaFil Plus and cold lateral condensation was compared to Roth's 801 root canal sealer. Fifty-two single canaled roots of extracted teeth were divided into four groups of twelve and instrumented to size 6 with .06 taper series 29 ProFiles. Group A canals were obturated with ThermaFil and Roth's 801 sealer. Group B canals were obturated with ThermaFil and RSA Roekoseal Automix. Group C canals were obturated with cold lateral condensation and Roth's 801 sealer. Group D canals were obturated with cold lateral condensation and RSA Roekoseal Automix. The linear …
Mutagenicity Of Root Canal Sealer Rsa Roekoseal Automix In The Ames Test, Joseph Anthony Wateska
Mutagenicity Of Root Canal Sealer Rsa Roekoseal Automix In The Ames Test, Joseph Anthony Wateska
Graduate Theses, Dissertations, and Problem Reports
The mutagenic activities of the root canal sealers, RSA Roekoseal Automix and AHPIus, were tested in the bacterial gene mutation assay (Ames test). Both materials were tested immediately after mixing and after setting 24 h. The Salmonella typhimurium tester strains TA98 and TA 100 were used to detect the induction of frame shift mutations and base pair substitutions both in the presence and absence of a metabolically active microsomal fraction from rat liver (S9 fraction). No mutagenic or toxic effects were found with DMSO eluates of freshly mixed or 24h set RSA Roekoseal Automix. However, under extreme experimental conditions, DMSO …
Spectroscopic Investigations Of New Glass-Ionomer Dental Cements, Yigang Jin
Spectroscopic Investigations Of New Glass-Ionomer Dental Cements, Yigang Jin
Graduate Theses, Dissertations, and Problem Reports
Emission spectroscopy has been used to study conventional and resin modified glass-ionomer dental cements by monitoring the integrated peak intensities of signals arising from chromium ions in the aluminium oxide matrix as a function of reaction time.;Different conventional cements were prepared by mixing Fuji II glass with various polyacids. Emission spectra were collected and analyzed. The differences of the setting reactions (due to polysalt formation) were explained based on the concentration and availability of hydrogen ions from the polyacids with different structures.;Commercially available and experimental resin modified cements were prepared and emission spectra were collected to compare the different setting …
Timing Of Alveolar Cleft Bone Grafting In Maxillary Alveolar Cleft Defects, Richard Morrow Crout
Timing Of Alveolar Cleft Bone Grafting In Maxillary Alveolar Cleft Defects, Richard Morrow Crout
Graduate Theses, Dissertations, and Problem Reports
Numerous methods have been attempted to identify the best time for secondary alveolar cleft bone grafting, including chronological age, skeletal age, and dental age. However, few studies have employed objective methods of assessment that would permit statistical analysis. Fifty-nine patients with clefts of the alveolus who acquired secondary alveolar cleft grafts at the Lancaster Cleft Lip and Palate Clinic were studied. A total of 74 affected areas from 15 bilateral and 44 unilateral alveolar cleft patients were available. Timing of the graft was determined utilizing root development of the involved canine, as compared to crown length, from a high quality …
Corrosion Between Orthodontic Archwires And Bracket Couples, Brian Costello O'Leary
Corrosion Between Orthodontic Archwires And Bracket Couples, Brian Costello O'Leary
Graduate Theses, Dissertations, and Problem Reports
Nickel-containing orthodontic wires have been reported to cause allergic reactions in sensitive individuals. An allergic reaction is related to corrosion of the alloys and subsequent leaching of nickel ions into the oral cavity. The purpose of this study was to determine if there is a significant difference in the corrosive potential of stainless steel, NiTi and TMA wires either alone or when coupled with a stainless steel bracket.;Using potentiostatic anodic polarization, the samples were tested in 0.9% NaCl solution at room temperature with neutral pH. The breakdown potentials of stainless steel, NiTi, TMA, and the stainless steel bracket were 600 …
The Effectiveness Of Prophylactic Etodolac On Post-Endodontic Pain, Eric Richard Menke
The Effectiveness Of Prophylactic Etodolac On Post-Endodontic Pain, Eric Richard Menke
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was to determine if prophylactic oral administration of etodolac would significantly reduce post-endodontic pain, when compared to ibuprofen and a placebo.;Thirty-six patients requiring conventional root canal therapy consented to single blind oral administration of either 400 mg of etodolac, 600 mg of ibuprofen, or a placebo, prior to conventional root canal therapy. Pain evaluation was completed on a pain survey that consisted of visual analog scales at the following time intervals; initial, immediately after, 4 hours, 8 hours, 12 hours, 24 hours, 48 hours, and 72 hours after initiation of root canal therapy.;A significant difference …
Obturation With Gutta Percha Of Greater Taper, A. L. Christopher Kayafas
Obturation With Gutta Percha Of Greater Taper, A. L. Christopher Kayafas
Graduate Theses, Dissertations, and Problem Reports
The purpose was to evaluate the in vitro apical seal of root canals obturated with Diadent DiaPro .04 and .06 taper gutta percha points.;Sixty eight canals of extracted human teeth were instrumented with ProFile Series 29, 0.06 taper rotary files. Canals were obturated as follows: (Group 1) cold lateral condensation using an ISO size master gutta percha point; (Group 2) cold lateral condensation using a DiaPro 0.04 taper master gutta percha point; (Group 3) warm vertical hybrid condensation using DiaPro 0.06 taper master gutta percha point; (Group 4) single cone obturation using a DiaPro 0.06 taper master gutta percha point. …