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Articles 1 - 13 of 13
Full-Text Articles in Dentistry
Effect Of Different Percentages Of Silica Nanofibers Filler Loads On Mechanical And Physical Properties Of Flowable And Hybrid Composite Resins, Qinyue Cai
All ETDs from UAB
Dental composites are used for a variety of applications in dentistry today. Dental composites are composed of a resin matrix containing a blend of Bis-GMA (bis-phenol A-glycidyldimethacrylate) or urethane dimethacrylate (UDMA) along with TEGDMA (tetraethylglycidylmethacrylate). Exhaustive researches has been conducted in recent years to improve physical and mechanical properties of resin-based dental composites, since the existing resin-filler systems may not be suitable for long term applications in large as well as high stress restorations. Nanofillers reinforced composite resins have shown promising results. Silica-based nanoparticles and clusters are blended with larger-sized fillers and are available commercially for restoring large posterior restorations. …
Clinical Evaluation Of Treatment Of White Spot Lesions With Icon, Candace A. Cronan
Clinical Evaluation Of Treatment Of White Spot Lesions With Icon, Candace A. Cronan
All ETDs from UAB
Introduction: Despite an increased awareness by clinicians and their attempt to aid patients in the prevention of white spot lesions, enamel demineralization continues to be a problem associated with orthodontic treatment. Current treatment options for these unaesthetic scars on the teeth range from conservative options for remineralization such as the use of fluoride and CPP-ACP to more aggressive treatment involving loss of tooth structure with microabrasion or restorations. An innovative option for treatment has recently been introduced in the form of the infiltrant resin, Icon. Icon infiltration is a minimally invasive procedure performed by a dentist that is claimed to …
Histomorphometry And Quantitative Analysis Of Longer-Term Implant Interfaces, Dave Darko Kojic
Histomorphometry And Quantitative Analysis Of Longer-Term Implant Interfaces, Dave Darko Kojic
All ETDs from UAB
Objective: This investigation was to evaluate (>10 year) bone response around custom (HA plasma coated) dental implants and HA particulate. Materials and Methods: Three individual post mortem mandibular COI Implants with surrounding bone were processed at six transverse locations to obtain non-decalcified ground sections (20-80µm)(n=36) and stained initially with methylene blue/basic fuchsin. Slides were evaluated to select (n= 8) slides for regions of interest along the perimeter of the implant, using optical microscopy (Olympus BX51 microscope) with a Retiga EXi color digital camera (Olympus, Center Valley, PA) and Bioquant VR software (R&M Biometrics, Nashville, TN) at an original magnification …
Characterization Of Pleiotrophin And Receptor Protein Tyrosine Phosphatase Beta/Zeta In Odontoblast And Osteoblast Cell Lines, Amena Tamkenath
Characterization Of Pleiotrophin And Receptor Protein Tyrosine Phosphatase Beta/Zeta In Odontoblast And Osteoblast Cell Lines, Amena Tamkenath
All ETDs from UAB
Pleiotrophin (PTN) is an extracellular matrix-associated growth factor and chemokine expressed in mesodermal and ectodermal cells. It plays an important role in osteoblast recruitment and differentiation. PTN has two well-known physiological receptors, protein tyrosine phosphatase beta/zeta (RPTPRZ1), and N-syndecan. Protein tyrosine phosphatases are a group of enzymes that remove phosphate groups from phosphorylated tyrosine residues on proteins. Protein tyrosine phosphorylation is a common post-translation modification that can create novel recognition motifs for protein interactions and cellular localization, affect protein stability and regulate enzyme activity. Osteoblasts have recently been found to express the short transmembrane isoform of RPTP beta/zeta but nothing …
Real-Time Quantitative Pcr For Evaluation Of Mutans Streptococci And Dental Caries, Chanika Manmontri
Real-Time Quantitative Pcr For Evaluation Of Mutans Streptococci And Dental Caries, Chanika Manmontri
All ETDs from UAB
Mutans streptococci (MS), e.g., Streptococcus mutans (Sm) and Streptococcus sobrinus (Ss), are associated with dental caries. Quantification of MS has been shown to predict caries risk. A new technology using PCR may streamline quantification compared to traditional culture methods. Purpose: To use real-time quantitative PCR (qPCR) and standard plate counting (SPC) for detection and quantification of levels of Sm, Ss and total streptococci (TS) in clinical samples from high-caries-risk children with no regular access to dental care and to study correlation of these bacterial levels and ratios to caries prevalence. Methods: Saliva and plaque samples were collected from school-aged children …
Molar Distalization To Resolve Class Ii Malocclusion: A Cephalometric Study Utilizing The Carriere Distalizer, Careybeth Hayes Rivers
Molar Distalization To Resolve Class Ii Malocclusion: A Cephalometric Study Utilizing The Carriere Distalizer, Careybeth Hayes Rivers
All ETDs from UAB
Objective: The purpose of this study is to determine the short-term skeletal and dental effects that occur as a result of Class II malocclusion correction utilizing the Carrière Distalizer as compared to best-matched controls. Methods: This is a retrospective cohort cephalometric study using lateral cephalometric films of 25 (14 male, 11 female, average age 13y 6m) class II patients consecutively treated with the Carrière Distalizer compared with 36 (19 male, 17 female, 13y 2m) untreated class II control subjects from a historical database best-matched based upon age, sex and skeletal classifications. Pretreatment and posttreatment lateral head films were analyzed with …
A Histologic And Radiologic Analysis Of Bone Formation Under The Elevated Maxillary Sinus Using Venous Coagulum As The Sole Filling Material, Kathleen Ann Beaudry
A Histologic And Radiologic Analysis Of Bone Formation Under The Elevated Maxillary Sinus Using Venous Coagulum As The Sole Filling Material, Kathleen Ann Beaudry
All ETDs from UAB
Insufficient bone height is a common obstacle to placing dental implants in the posterior maxilla. Sinus lift procedures using various grafting materials have been shown to be a highly predictable way to increase bone height in the posterior maxilla (Jensen 1998). Given the wide range of materials that have proven successful in augmenting the sinus, the argument could be made that the presence of graft is not critical. Instead, the creation and maintenance of space, provided by two implants, along with the osteoinductive properties of the membrane, the periosteum, and growth factors provided by a blood clot are the only …
Three Dimensional Comparison Of Facial Morphology Of A Caucasian American Population And A Native Brazilian Population, William N. Turner
Three Dimensional Comparison Of Facial Morphology Of A Caucasian American Population And A Native Brazilian Population, William N. Turner
All ETDs from UAB
The aim of this study was to assess the use of 3-dimensional facial averages in determining facial morphologic differences in a Caucasian North American population and a native Brazilian population. Methods and Materials: Three-dimensional images were acquired through a commercially available stereo-photogrammetric camera system (The 3dMDfaceTM system). A total of 200 images from two population groups (Caucasian American and Native Brazilian) were taken. Each image was acquired as a facial mesh and orientated along a triangulated axis. All facial images were overlaid and superimposed, using Rapid Form 6 software to create a composite facial average of one man and one …
Three-Dimensional Magnetic Resonance Imaging Of The Natural Dentition, Ryan Jeffery Cox
Three-Dimensional Magnetic Resonance Imaging Of The Natural Dentition, Ryan Jeffery Cox
All ETDs from UAB
The purpose of this study was to determine if ultra short echo time magnetic resonance imaging (UTE-MRI) technology could be used to image teeth in orthodontics. The objectives of this study were to determine the accuracy and resolution of UTE-MRI on dental morphology and its application to the field of orthodontics with respect to appliance affect on morphology. Teeth were collected from the Orthodontic clinic at the University of Alabama at Birmingham and the Institutional Review Board of the University of Alabama at Birmingham approved the study. High-resolution 3-Tesla UTE-MRI was preformed on sixty extracted human premolar teeth with fixed …
Wear Of Ceramics And Enamel In A Chewing Simulator, Sridhar Janyavula
Wear Of Ceramics And Enamel In A Chewing Simulator, Sridhar Janyavula
All ETDs from UAB
Dental ceramics are known for their excellent chemical and optical properties. The wear of human enamel and of the restorative material is often a vital and esthetical concern when selecting a restorative material for any given clinical restorative treatment. Objective: The purpose of the study was to evaluate effect of zirconia (polished, glazed, polished then glazed, adjusted, glazed and adjusted, adjusted and polished and aged zirconia) against human enamel antagonist. A comparison was made between different zirconia, veneering porcelain (Ceramco 3) and natural enamel. Additionally, the surface roughness (Ra) of the ceramic surface was measured before and after wear testing …
Influence Of Surface Treatment Of Y-Tzp And Luting Cements On Retention Of Y-Tzp Crown, Mehdi Karimipour-Saryazdi
Influence Of Surface Treatment Of Y-Tzp And Luting Cements On Retention Of Y-Tzp Crown, Mehdi Karimipour-Saryazdi
All ETDs from UAB
Clinicians for a single tooth restoration, due to improved esthetics, often select all ceramic crowns. Zirconium Oxide has been utilized for many years to full fill the requirement of esthetics, high mechanical properties and biocompatibility. The purpose of this study is to evaluate the effect of different surface treatments and luting agents on retention of a zirconium oxide crown. Material and Methods: Ninety extracted teeth were obtained. Teeth were mounted in Ortho JetTM resin (Lang Dental Manufacturing Co., Inc. IL, USA). Occlusal surface was cut flat using Isomet (Buhler Ltd). Diamond burs were used to cut axial walls under water …
The Influence Of Growth Factors Applied During Socket Conversion, On The Incidence Of Spontaneous Early Dental Implant Exposure, Michael Anh Minh Nguyen
The Influence Of Growth Factors Applied During Socket Conversion, On The Incidence Of Spontaneous Early Dental Implant Exposure, Michael Anh Minh Nguyen
All ETDs from UAB
Spontaneous early exposure of a dental implant's cover screw can result in a nidus for plaque accumulation, which may result in inflammation, damage to the peri-implant mucosa, and possible peri-implant bone loss. This study aims to investigate the effect of the addition of growth factors, specifically recombinant human platelet-derived growth factor, and platelet-rich plasma, at the time of socket conversion, on the incidence of early implant exposures. This retrospective study utilized data from a study involving a total of 80 implants that were placed in 4 different types of sites (Groups 1,2,3, and 4). Group 1 sites were extraction sites …
The Characteristics Of Soft Tissue Following Root Coverage Procedures With Two Types Of Acellular Dermal Matrix Allografts, Ramzi Abou Arraj
The Characteristics Of Soft Tissue Following Root Coverage Procedures With Two Types Of Acellular Dermal Matrix Allografts, Ramzi Abou Arraj
All ETDs from UAB
Acellular dermal matrix allograft (ADMA) has emerged as a reliable substitute for autogenous soft tissue grafts in the treatment of gingival recessions and lack of keratinized gingiva (KG). ADMA has been hypothesized to create a zone of "immobile tissue" extending apical to the mucogingival junction (MGJ). This project aims to investigate the presence of this zone associated with the use of a coronally advanced flap in combination with either AlloDerm® (ADMA A) or Puros Dermis® (ADMA B) for root coverage procedures. Twenty patients, each presenting with one Miller Class I or II recession defect, were randomized to receive either ADMA …