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Articles 91 - 120 of 223
Full-Text Articles in Dentistry
Surface Treatment Effects On Shear Bond Strength And Biaxial Flexural Strength Of Three Generations Of Zirconia, Yasko A. Darkoue
Surface Treatment Effects On Shear Bond Strength And Biaxial Flexural Strength Of Three Generations Of Zirconia, Yasko A. Darkoue
All ETDs from UAB
SURFACE TREATMENT EFFECTS ON SHEAR BOND STRENGTH AND BIAXIAL FLEXURAL STRENGTH OF THREE GENERATIONS OF ZIRCONIA YASKO A. DARKOUE MASTER OF SCIENCE IN DENTISTRY ABSTRACT Objectives: Mechanical and chemical surface treatments are required to achieve a durable bond to zirconia. The objective of this study is to compare the effects of particle abrasion and pressure on shear bond strength and biaxial flexural strength of Lava (Frame, Plus and Esthetic) zirconia to obtain a favorable combination of pressure and particle type to produce optimum strength and optimize the bond produced. A protocol for mechanical treatment balancing strength of the type zirconia …
Effect Of Antidepressants On Cytokines Profiles Seen In Inflamed Tissue And Serum Samples In Patients With Moderate Chronic Periodontitis, Silvia M. Villalobos
Effect Of Antidepressants On Cytokines Profiles Seen In Inflamed Tissue And Serum Samples In Patients With Moderate Chronic Periodontitis, Silvia M. Villalobos
All ETDs from UAB
This study evaluated whether depression with or without the use of antidepressant was associated with changes in inflammatory markers, intraorally and systemically, GCF volume, serum biomarker levels. Cross-sectional data were collected from individuals with moderate periodontitis who were assigned to one of three groups based upon their medical history, medication usage, and answers to a validated survey instrument that assessed their level of clinical depression. Three groups of patients were compared: 1) patients with clinically diagnosed depression taking antidepressant medications [selective serotonin reuptake inhibitors (SSRIs), norepinephrine-dopamine reuptake inhibitor (NDRIs), or serotonin and norepinephrine reuptake inhibitors (SNRIs)]. 2) patients with clinically …
Wear Of Orthodontic Bite Turbos And Opposing Enamel, Kyle Feagin
Wear Of Orthodontic Bite Turbos And Opposing Enamel, Kyle Feagin
All ETDs from UAB
Orthodontic bite turbos are used to separate the maxillary and mandibular arches when disocclusion is needed for facial placement of orthodontic brackets or extrusion of teeth. The bite turbo should have adequate wear resistance to maintain the disocclusion but also avoid abrasion of the opposing enamel. The objective of this study was to measure the wear and opposing enamel wear of three materials used as bite turbos. 8 specimens (10x8x4 mm) each of Transbond LR (3M), Transbond Plus (3M) and Triad gel (Dentsply) were prepared in silicone molds and light cured for 30 seconds using an Acteon Satelec Blue Ray …
A Study Of Enamel Thickness Of Permanent Maxillary Canines, Daniel Diaz Rubayo
A Study Of Enamel Thickness Of Permanent Maxillary Canines, Daniel Diaz Rubayo
All ETDs from UAB
Introduction: Tooth agenesis is defined as the lack of development of a tooth. Maxillary lateral incisors have been reported to be missing in 2.2% of the population in the United States of America. Two treatment options are available: opening the space to restore the missing tooth with a dental prosthesis; or close the space by moving the adjacent teeth into the space and substituting the missing lateral incisor with the maxillary canine. With a wider crown and a more convex labial surface than lateral incisors, canines require a significant amount of reduction in order to achieve an adequate occlusion and …
Non-Surgical Correction Of Anterior Open Bites Using Temporary Anchorage Devices, Kimberly Spencer Butts
Non-Surgical Correction Of Anterior Open Bites Using Temporary Anchorage Devices, Kimberly Spencer Butts
All ETDs from UAB
Objective: The purpose of this study is to determine the skeletal, dental and soft tissue effects that occur as a result of maxillary posterior TAD intrusion; to compare treatment outcomes of growing patients to a growing matched control group; and to present a simplified TAD intrusion technique. Methods: This is a retrospective cohort study using lateral cephalometric radiographs of 16 (5 male, 11 female, average age 38y 4m) non-growing patients and 16 (5 male, 11 female, average age 13y 11m) growing patients with anterior open bite malocclusions treated with temporary anchorage devices (TADs) to intrude the maxillary posterior segments. Growing …
Bioactive Materials: Ion Release & Recharge, Wear, Gloss & Hydroxyapatite Formation, Mohammed Badahman
Bioactive Materials: Ion Release & Recharge, Wear, Gloss & Hydroxyapatite Formation, Mohammed Badahman
All ETDs from UAB
Introduction : Dental caries is one of the most prevalent chronic diseases 1. Unfortunately, there have been numerous failures with the treatment rendered, the materials used and how they are used. One significant cause for dental restoration failure is secondary caries and the need to replace the existing restoration. It has been reported that more than half of the restorations placed have been replaced because of recurrent caries. New materials and techniques have been developed to enhance adhesives in dentistry and improve the bonded interface however that interface still remains the weakest component of composite restorations. Marginal degradation and the …
The Smile Attractiveness Of Patients Successfully Treated According To The Finishing Standards Of The American Board Of Orthodontics, Tayem Abou Saleh
The Smile Attractiveness Of Patients Successfully Treated According To The Finishing Standards Of The American Board Of Orthodontics, Tayem Abou Saleh
All ETDs from UAB
Smiling is the most useful way people can use to express their emotions, therefore, it is critical to build our treatment plan not just around establishing a stable functional occlusion but also to achieve beautiful harmonious smile. It has been suggested that the smile may be made up of 3 components: Gingival component, soft tissue component, and dental component, and the ultimate smile beauty can be achieved by trying to find the balance in between these components. We collected 68 smiling photos for cases were taken to American board of orthodontics clinical exam and they were considered successfully treated, all …
Identification And Application Of Gingival Mesenchymal Stem Cells For Dental Tissue Regenration, Yousuf Al-Aboosi
Identification And Application Of Gingival Mesenchymal Stem Cells For Dental Tissue Regenration, Yousuf Al-Aboosi
All ETDs from UAB
Mesenchymal stem cells have been very attractive treatment modality in regenerative medicine, but not so much in regenerative dentistry. This can be attributed to the difficulty in obtaining dental origin stem cells without extracting a tooth or other invasive procedures. Autogenous gingival graft harvested from palatal tissue is used as the gold standard for treating single tooth recession. The healing of the gingival graft has been shown to be mostly depended on the recipient side more than the graft itself. This study is aiming to find if the palatal tissue has cells with mesenchymal characteristics that are helping in the …
External Root Resorption In The Orthodontic Patients, Frank Earl Litchfield
External Root Resorption In The Orthodontic Patients, Frank Earl Litchfield
All ETDs from UAB
External Apical Root Resorption (EARR) is a side effect of orthodontic treatment that results in root shortening in about one-third of orthodontic patients. Great variability among patients exists in their susceptibility to this multifactorial condition, and both treatment and patient specific factors contribute to EARR. Root resorption values were found to be higher in Hispanics compared to Asians and Caucasians (1). However, the prevalence of EARR is not well documented in all populations. Since African Americans represent the largest minority group in the United States, establishing the prevalence and risk factors for EARR within this ethnicity is important. Objective: To …
Smile Outcome Comparison Of Orthodontic Cases Treated With Different Extraction Patterns, Gregory Long
Smile Outcome Comparison Of Orthodontic Cases Treated With Different Extraction Patterns, Gregory Long
All ETDs from UAB
Extraction of premolar teeth for orthodontic purposes is a common treatment approach. The effects of premolar extraction on the occlusion and the face have been studied extensively in the past. To date, however, the effects of premolar extractions on the smile have not been comprehensively quantified in the literature. The purpose of this study was to compare the smile outcome of patients treated with premolar extractions. Methods: This retrospective case-control study established 4 groups of 33 patients each for comparison. Three groups of patients with the same malocclusion were treated with different premolar extraction patterns. The remaining group of patients …
Light Transmission And Wear Of Translucent Zirconia After Conventional And Fast Sintering Cycle, Anvita Maharishi
Light Transmission And Wear Of Translucent Zirconia After Conventional And Fast Sintering Cycle, Anvita Maharishi
All ETDs from UAB
ABSTRACT Introduction: Zirconia is classified by the mole percentage of yttria contained in the zirconia. The most strong and opaque material contains 3 mol % yttria, intermediate strength and opacity contain 4 mol %, and whereas 5 mol % is the weakest but most translucent zirconia. Refined zirconia powder is pressed into a mold to form a disc which is then milled to form a restoration. Post milling of sintered zirconia restorations is necessary to obtain final mechanical and physical properties of the restoration. Traditionally conventional sintering cycles required 6-8 hours to sinter. Whereas, fast sintering cycles have been have …
Basics Of Musculoskeletal Health In Dentistry: An Overview, Drashti Shah, Ankit Arora, Padmaja Arora
Basics Of Musculoskeletal Health In Dentistry: An Overview, Drashti Shah, Ankit Arora, Padmaja Arora
Books
This book is an overview of the basics of musculoskeletal health amongst dentists which is the most commonly targeted profession of musculoskeletal pain and its consequences. This book also covers the common areas of pain, aeitiolgy, the study stating specialty specific areas of pain due to repetitive work of dental specialties andalso mentions the measures of prevention and consequences if being neglected, i.e. in general stating importance of musculoskeletal health amongst dentists.
Clinical And Histomorphometric Outcomes Following The Use Of Small Versus Large Particle Sized Bone Allografts In Ridge Preservation Procedures: A Randomized Clinical Trial, Gentiane Valiquette
Clinical And Histomorphometric Outcomes Following The Use Of Small Versus Large Particle Sized Bone Allografts In Ridge Preservation Procedures: A Randomized Clinical Trial, Gentiane Valiquette
All ETDs from UAB
Alveolar ridge preservation at the time of tooth extraction is a commonly performed procedure as it significantly minimizes ridge resorption and allows for more optimal implant placement. The amount of new vital bone has been shown to vary with the use of different types of bone replacement grafts, however, the effect of bone graft particle size on the outcomes following ridge preservation has not been elucidated in the scientific literature. The present randomized clinical trial compared clinically, radiographically and histomorphometrically the use of small- (0.25-1.0mm) versus large- (1.0- 2.0mm) sized particle mineralized cortico-cancellous bone freeze-dried bone allografts (FDBAs) in ridge …
Fracture Strength Of Translucent Zirconia Crowns, Carlos Alberto Jurado
Fracture Strength Of Translucent Zirconia Crowns, Carlos Alberto Jurado
All ETDs from UAB
ABSTRACT Objectives: To measure and compare crown fracture load of a new translucent zirconia. Methods: 72 Standarized crown preparations were designed with AutoCAD software with a 0.8mm shoulder margin and 1 mm incisal-cervical marginal curvature. A stylized crown with a 1mm thickness and 0.8mm minimum thickness in the central pit was designed in 3shape software. Tooth dies were milled out of a resin composite (Crystal Ultra) that has a similar modulus as dentin (Modulus 10 GPa). Crowns were fabricated and prepared into the following groups: 24 crowns of translucent zirconia (Lava Esthetic, 3M), 8 bonded with resin cement (Group 1), …
The Effect Of Primary Palatal Repair On Growth In Cleft Lip And Palate Patients, Nadia Abou Kheir
The Effect Of Primary Palatal Repair On Growth In Cleft Lip And Palate Patients, Nadia Abou Kheir
All ETDs from UAB
Cleft lip and palate (CLP) is a facial defect that is represented as a split in the mouth, palate or both. In the United States approximately 4440 babies are born with CLP annually. More than US$600 million are spent on their treatment and mostly on surgical interventions. Considering the high expenses of primary palatal repair, its effect on growth has been controversial. Surgical scaring is postulated as the cause of maxillary hypoplasia. However, this operation has been considered necessary for function and development of speechHowever, this operation has been considered as necessary for better functional and speech outcomes. Materials and …
Evaluation And Comparison Of Child And Adolescent Mallampati Scores, Diana Bozner
Evaluation And Comparison Of Child And Adolescent Mallampati Scores, Diana Bozner
All ETDs from UAB
Objectives: The purpose of this study is to investigate clinical assessments that may help to predict pediatric obstructive sleep apnea (OSA). These clinical tools include the Mallampati and Brodsky classifications, as well as the Epworth Sleepiness Scale for Children and Adolescents (ESS-CHAD). The specific aims of this study are to: 1.) Compare the Mallampati scores, Brodsky scores, and results of the ESS-CHAD of children versus adolescents in order to observe how these criteria change with age. 2.) Compare the Mallampati scores derived by a dental student, an orthodontic resident and a pediatric otorhinolaryngologist (ENT) to determine the accuracy of this …
Endodontic Post Retention With Resin Cements (Ilumi Fiber Post), Faimeena Farheen
Endodontic Post Retention With Resin Cements (Ilumi Fiber Post), Faimeena Farheen
All ETDs from UAB
Objectives: Loss of post retention is the leading cause in the cemented post. There is no good method of bonding a fiber post in a post space with resin cements because adhesive cementation into a prepared post space is difficult- due to an inability to place, dry and light cure the adhesive and the cement. A new post system (iLumi) that transmits light to the apex of the post has recently been developed. We want to know if this system will improve post retention in each section (coronal, middle and apical) of the prepared post space and if this curing …
A Randomized Trial To Evaluate The Effect Of Allograft Bone Particle Size On Histomorphometric And Clinical Outcomes Following Ridge Augmentation Procedures, Hussein Basma
All ETDs from UAB
Ridge deficiency is an unfortunate obstacle that obviates the placement of dental implants or results in placing them at an angle that compromises the prosthetic restoration. An ideal volume is essential for implant placement in an optimal three-dimensional position. Several methods for augmenting the alveolar ridge in preparation for implant placement have been described. Autogenous bone grafts, considered to be the “gold standard”, are associated with significant morbidity and require a second surgical site. Guided bone regeneration (GBR), is an alternative technique that use bone-substitute materials as adjuncts to or replacements for autografts in bone augmentation procedures to overcome the …
Assessment Of Head Asymmetry In Prematurely Born Children During Early Childhood Using 3d Photography, Panagiotis Kyteas
Assessment Of Head Asymmetry In Prematurely Born Children During Early Childhood Using 3d Photography, Panagiotis Kyteas
All ETDs from UAB
The aim of this study is to assess the course of plagiocephaly during early childhood in preterm and fullterm children and determine any differences throughout the given timeframe between the two groups. Materials and Methods: 34 preterm and 34 fullterm children born in the Oulu University Hospital, Finland attended the clinical study at the age of 3 (T1), 6 (T2), (T3) months and 3 years (T4). At each visit, 3D images of the head were obtained using a 3dMD head 5-pod camera system (3dMD, Atlanta, GA). Nine outcome variables including 2D and 3D measurements were calculated. Results: At T1, 26.47% …
The Effect Of Novel Antibiotic Compounds On Endodontic Biofilms, Steven Rhodes
The Effect Of Novel Antibiotic Compounds On Endodontic Biofilms, Steven Rhodes
All ETDs from UAB
Purpose: To investigate the effects of three novel experimental antibiotics on monospecies (Enterococcus faecalis) and polymicrobial (mixed) endodontic biofilms. Materials and Methods: Biofilms containing pure Enterococcus faecalis, as well as biofilms derived from mixed bacterial samples aspirated from inside the pulp spaces of necrotic human teeth, were grown onto slices of human dental in vitro. Biofilm formation capability was verified with SEM. The treatment groups consisted of 3 novel experimental antibiotics. 8.25% sodium hypochlorite and sterile saline were used as the controls. The biofilms were investigated with live/dead fluorochrome staining and confocal laser scanning microscopy. Results: The full strength sodium …
A Prospective Randomized Clinical Trial To Compare Free Gingival Grafts And Connective Tissue Grafts Around Implants With A Lack Of Keratinized Mucosa, Jeffrey Thomas Hsu
A Prospective Randomized Clinical Trial To Compare Free Gingival Grafts And Connective Tissue Grafts Around Implants With A Lack Of Keratinized Mucosa, Jeffrey Thomas Hsu
All ETDs from UAB
A PROSPECTIVE RANDOMIZED CLINICAL TRIAL TO COMPARE FREE GINGIVAL GRAFTS AND CONNECTIVE TISSUE GRAFTS AROUND IMPLANTS WITH A LACK OF KERATINIZED MUCOSA JEFFREY T HSU PERIODONTOLOGY ABSTRACT Although evidence is equivocal regarding the need for keratinized mucosa around dental implants, the consensus among researchers and clinicians is that peri-implant keratinized mucosa is beneficial to the health and stability of the implant prosthesis. An adequate width of keratinized mucosa (WKM) provides a resistant barrier to bacterial infiltration, facilitates restorative procedures, improves esthetic outcomes, patient comfort, and ease of oral hygiene. Many surgical approaches have been used to increase WKM around dental …
Osteoblast And Chondrocyte Specific Contribution Of The Runx2 Gene During The Development Of Cleidocranial Dysplasisa, Kayla Renee King
Osteoblast And Chondrocyte Specific Contribution Of The Runx2 Gene During The Development Of Cleidocranial Dysplasisa, Kayla Renee King
All ETDs from UAB
The Runx2 transcription factor is essential for the differentiation of mesenchymal stem cells into functional chondrocytes and osteoblasts. In humans, the haploinsufficiency of the Runx2 gene is associated with cleidocranial dysplasia (CCD). The CCD is characterized by short stature, open sutures and fontanels in the skull, hypoplastic clavicles and supernumerary teeth. Skeletal elements disrupted in CCD patients are developed by intramembranous and/or endochondral ossification. However, the cell type specific roles of the Runx2 gene in the development of CCD-associated skeletal defects remain unknown. The main goal of this research was to define the specific role of the Runx2 gene in …
Validation Of Mixed Dentition Analysis Method For Northern Thai Population, Wannapa Chinadet
Validation Of Mixed Dentition Analysis Method For Northern Thai Population, Wannapa Chinadet
All ETDs from UAB
The purpose of this study is to determine the accuracy of the Tanaka-Johnston mixed dentition analysis method and develop a new predictive model for Northern Thai population. A total of 400 sets of dental study casts (145 males and 255 females) were obtained from the Department of Pediatrics and Orthodontics at the Chiang Mai University School of Dentistry, Thailand. The models were obtained from patients that were age 11 to 23 years that consisted of a full permanent dentition. A digital caliper was used to measure the mesiodistal widths of all teeth on dental study models. The sum of the …
Retention Of Resin Composite Cam Crowns Following Different Bonding Protocols, Amir Hossein Nejat
Retention Of Resin Composite Cam Crowns Following Different Bonding Protocols, Amir Hossein Nejat
All ETDs from UAB
Objectives: Resin composite CAM materials offer more efficient milling, however, there is a high incidence of clinical debonding when this material is used for full-coverage crowns. The aim of the present study is to evaluate the effect of different surface treat-ments and primers on the crown retention of a new resin composite CAM material. Methods: 120 molars were prepared with a 24 degree taper, 1.5mm height, and axial walls in dentin. Surface area was measured by digital microscopy and preparations were scanned with an intraoral scanner. Crowns were milled from an experimental com-posite material with 4mm occlusal height. Teeth were …
Resin Infiltration Of Incipient Interproximal Caries: A 6-Month Randomized, Controlled Clinical Trial, Purvi Vaghela
Resin Infiltration Of Incipient Interproximal Caries: A 6-Month Randomized, Controlled Clinical Trial, Purvi Vaghela
All ETDs from UAB
Dental caries is the most widespread of all diseases. It causes destruction of tooth structure by dissolving the enamel first, then progressing to the dentin. While it is possible to replace carious tooth structure with invasive restorations, it is highly desirable to arrest or reverse the disease process so that the restorations can be avoided. One of the most difficult areas to clean or use preventive, non-surgical treatment is the contact area between teeth. Recently treatment with resin polymers to infiltrate enamel and dentin affected by caries has been in-troduced. The infiltration technique arrests the lesion progression by penetrating and …
Beam Study In Orthodontic Patients, Benjamin Samuelson
Beam Study In Orthodontic Patients, Benjamin Samuelson
All ETDs from UAB
Introduction: One of the most challenging tasks of the orthodontic team is to motivate patients to maintain proper oral hygiene. In order to improve compliance, clinicians are utilizing mobile applications. The goals of this study are to determine the efficacy of an application-based approach in increasing orthodontic patient’s oral hygiene compliance, as well as measure the correlation between the reported compliance and clinical parameters of gingival health. Materials & Methods: The Beam® toothbrush and its application software (app) were selected for evaluation. Three prospective groups of 15 patients undergoing routine orthodontic treatment were evaluated as part of this research protocol …
Retention Of Zirconia Crowns Following Different Bonding Protocols, Suruchi Lamba
Retention Of Zirconia Crowns Following Different Bonding Protocols, Suruchi Lamba
All ETDs from UAB
Objective: To measure and compare the retention of zirconia crowns cemented with Ceramir (Calcium phosphate-based Bioactive Cement), RelyX Luting Plus (RMGI Cement) and RelyX Unicem (Self-adhesive resin cement) to extracted teeth following thermocycling. Methods: 30 sound extracted non-carious human molars were collected following IRB approval. The selected molars were notched at the roots and mounted into PVC molds filled with acrylic resin (Yates Motloid, USA). The occlusal surface was ground flat on a model trimmer. The axial reductions were performed with a standardized crown preparation device using a Komet 5845KR (“onlay”) diamond bur. A 10 degree ramp was used to …
An In Vitro Evaluation Of Abutment Design For Anterior Zirconia Resin Bonded Restorations, Watcharapong Aroonsang
An In Vitro Evaluation Of Abutment Design For Anterior Zirconia Resin Bonded Restorations, Watcharapong Aroonsang
All ETDs from UAB
Resin-bonded fixed partial dentures (RBFPDs) have evolved from metal frameworks to esthetic all ceramic tooth colored restorations. However these restorations frequently fail due to a loss of retention of the retainers. As the frameworks for these restorations have changed to more esthetic ceramic materials, the search for the ideal conservative preparation design providing maximum retention is critical to improve the life span of these restorations. Purpose: This in vitro evaluation measured and compared the resistance and retention created with different abutment preparation designs with a zirconia framework. Method: 21 extracted human maxillary central incisors were divided into three groups of …
Incisor Contact In Optimal Occlusion, Ryan Baker
Incisor Contact In Optimal Occlusion, Ryan Baker
All ETDs from UAB
The objective of the present study was to grade the overjet of untreated plaster dental study casts with optimal occlusion utilizing the American Board of Orthodontics (ABO) Objective Grading System (OGS). Currently no data set exists for incisor contact norms in optimal occlusion. Materials and Methods: 140 Plaster dental study casts possessing optimal occlusion were utilized for this study. Study casts used were obtained from the office of Dr. Lawrence F. Andrews in San Diego, CA. The majority of the study models were those used in determining Andrews Six Keys to Normal Occlusion. Overjet was graded according to the ABO …
Bioactive Materials: Ion Release, Flexural Strength, Secondary Caries Depth And Elemental Analysis Of Surrounding Tooth Structure, Prajakta Shreeram Kulkarni
Bioactive Materials: Ion Release, Flexural Strength, Secondary Caries Depth And Elemental Analysis Of Surrounding Tooth Structure, Prajakta Shreeram Kulkarni
All ETDs from UAB
ABSTRACT Objectives: Bioactive materials release calcium, phosphate, and fluoride which may increase tooth remineralization. But limited data is available demonstrating the superiority of bioactive or ion releasing materials compared to fluoride or no ion releasing materials. The aims of the present study are to measure and compare the calcium, fluoride, and phosphate ion release at different pH, flexural strength and caries protecting ability of the materials including the ion uptake of surrounding tooth structure. Methods: Activa, Cention N, Fuji LC II and Filtek Supreme Ultra were the restorative materials tested. Firstly, the fluoride and calcium release of these materials was …