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Full-Text Articles in Medicine and Health Sciences
Effect Bioactive Material Have On Tooth Demineralization, Taillk Gomes
Effect Bioactive Material Have On Tooth Demineralization, Taillk Gomes
All ETDs from UAB
The objective of this in vitro study is to compare the inhibition of demineralization of root dentin caused by the presence of different restorative materials using Vickers Hardness (HV) test (microhardness) test and polarized light microscopy (PLM).
Effects Of Light Curing Bonding Agent With Dual Cure Cement On The Retention Of Zirconia And Lithium Disilicate Crowns: An In-Vitro Study., Mariam Issa
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Objective: To measure and compare the bond strength of zirconia and lithium disilicate crowns bonded to human teeth (enamel and dentin) using universal adhesive with resin cement and different light curing protocols.Methods: Sixty extracted sound non carious human teeth (second premolars) were stored in formalternate solution (FormalternateTM, Concentrate, 500 mL, Canada) and the roots were notched and mounted into acrylic resin (Yates Motloid, USA). Flat surface preparation was done on the occlusal surface of the samples using model trimmer. The surface area of the specimens was measured with digital light microscopy. Samples were randomly divided into six groups of 10 …
Comparison Of Radiological Signs To Clinical Symptoms In Children With Jia. A Pilot Study, Shubham Sharma
Comparison Of Radiological Signs To Clinical Symptoms In Children With Jia. A Pilot Study, Shubham Sharma
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JIA, which stands for juvenile idiopathic arthritis, is a group of chronic inflammatory joint diseases that usually occur in children under the age of 16 and last for at least six weeks1–5. It is one of the most common chronic joint diseases in childhood1 and affects up to 150 out of every 100,000 children worldwide6. This condition has no identifiable cause and is different from adult rheumatoid arthritis. Unfortunately, JIA can have a significant negative impact on the lives of these young children, causing disability and impairing their daily activities. TMJ involvement is more common than previously believed in JIA …
Evaluation Of Antimicrobial Effect Of Licorice Extrcat Agiasnt Oral Microorganisms, Roshanak Rastegar
Evaluation Of Antimicrobial Effect Of Licorice Extrcat Agiasnt Oral Microorganisms, Roshanak Rastegar
All ETDs from UAB
Introduction: The causative factors of dental caries have been studied for many years, however, preventing the formation of dental caries remains an elusive task. Microorganisms have been the focal point of numerous studies as a prime cariogenic factor. Streptococcus mutans and Candida albicans have been frequently co-isolated from dental biofilm in patients with early childhood caries (ECC) and studies have demonstrated the synergistic effects of these two microorganisms in promoting tooth demineralization. Acid and glucan production, which are two virulence factors produced by S. mutans that mediate biofilm formation and tooth decay, have been shown to be promoted during co-colonization …
Efficacy Of Lower Incisor Intrusion Using Clear Aligners, Cason Roberson
Efficacy Of Lower Incisor Intrusion Using Clear Aligners, Cason Roberson
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Objective: The primary objective of this study is to evaluate pre and posttreatment lateral cephalometric radiographs on patients treated with Invisalign by the same orthodontist where lower incisor intrusion was prescribed and to determine the amount of true lower incisor intrusion achieved during treatment. Methods: This retrospective case series study included 48 patients with an overbite exceeding 2mm, who were treated with Invisalign clear aligner therapy, and whose Clincheck treatment plan included lower incisor intrusion. The mean age of the study group was 27 years with 14 (29%) of the subjects being male and 35 (71%) being female. The mean …
In Vitro Evaluation Of Candida Albicans Adherence And Disinfection Techniques On Cad/Cam Milled, 3d Printed, And Heat-Cured Pmma, Mohammad Amir Koujan
In Vitro Evaluation Of Candida Albicans Adherence And Disinfection Techniques On Cad/Cam Milled, 3d Printed, And Heat-Cured Pmma, Mohammad Amir Koujan
All ETDs from UAB
INTRODUCTION: Candida albicans has been regarded as the most predominant oral fungal pathogen and the main causative of denture stomatitis. Modern denture are fabricated from various types of polymers commonly: CAD/CAM or heat-cured. C. albicans adherence rate to these polymers and disinfection efficacy of adherent fungal biofilms are multifactorial processes and differ depending on the physical characteristics of the targeted surface. PURPOSE: The purpose of this study was to investigate Candida albicans adherence to specimens from three types of polymers namely: heat-cured PMMA, CAD/CAM milled and 3D printed. The second part compares the efficacy of four common disinfection techniques on …
A Prospective, Rct To Compare Vestibular Incision Supraperiosteal Access And Sulcular Tunnel Access Root Coverage Procedures To Treat Gingival Recession. A Pilot Study, Jamie Hargett Howard
A Prospective, Rct To Compare Vestibular Incision Supraperiosteal Access And Sulcular Tunnel Access Root Coverage Procedures To Treat Gingival Recession. A Pilot Study, Jamie Hargett Howard
All ETDs from UAB
The objective of this study was to evaluate the clinical and patient centered outcomes obtained following soft tissue grafting utilizing vestibular incision subperiosteal tunneling access (VISTA) or standard tunneling access (STA) procedures with acellular dermal matrix (ADM) and coronal flap advancement to treat Miller class I and II recession defects on single rooted teeth. Nine patients and 29 recession defects were randomly divided into two groups (A: VISTA, B: STA) and were treated and evaluated for six months post-surgically. For all participants included in the study the average recession defects at baseline were 2.48±0.57mm and at the six-month visit the …
Clinical Evaluation Of The Temporomandibular Joint Function Using 4d Jaw Tracking Following Total Joint Replacement, Farhana Rahman
Clinical Evaluation Of The Temporomandibular Joint Function Using 4d Jaw Tracking Following Total Joint Replacement, Farhana Rahman
All ETDs from UAB
The degenerative temporomandibular joint diseases such as osteoarthritis, rheumatic arthritis, TMJ ankylosis, condylar resorption is successfully treated by total joint replacement. The aim of this study was to examine the function of Temporomandibular joint after total joint replacement. 15 patients with unilateral or bilateral TMJ total joint replacements and 15 healthy controls were evaluated via SICAT JMT+ device. This non-invasive system measures 3D position and rotation in all degrees of freedom and allows undisturbed functional mandibular movements to provide a quantitative evaluation. In addition, a TMJ questionnaire consisting the subjective symptoms was also obtained. Mandibular movements after total joint replacements …
Bond Of Resin Cements Through Three Ceramics At Varying Thickness, Po-Hsu Chen
Bond Of Resin Cements Through Three Ceramics At Varying Thickness, Po-Hsu Chen
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The purpose of this study was to determine the bond strength of a light cured resin when cured through 3 different types of dental ceramics (traditional zirconia with 3 mol% yttria, translucent zirconia with 5 mol% yttria, and lithium disilicate) at 2 different thicknesses. A total of 135 specimens were prepared from traditional zirconia (IPS e.max ZirCAD LT, Ivoclar Vivadent, Liechtenstein), translucent zirconia (IPS e.max ZirCAD MT, Ivoclar Vivadent, Liechtenstein), and lithium disilicate (IPS e.max CAD LT, Ivoclar Vivadent, Liechtenstein) into a plate shape, but in different thicknesses (1mm and 1.5mm). Ceramic buttons were fabricated by pressed lithium disilicate (IPS …
External Root Resorption In The Orthodontic Patients, Frank Earl Litchfield
External Root Resorption In The Orthodontic Patients, Frank Earl Litchfield
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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 …
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
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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 …
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
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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 …
Dental Dimensions In Non-Syndromic Patients With Unilateral Cleft Palate, Blake Boleware
Dental Dimensions In Non-Syndromic Patients With Unilateral Cleft Palate, Blake Boleware
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Objective: The main objective of this study is to determine if any difference in tooth size exists between the maxillary quadrants in non-syndromic patients with unilateral cleft palate using cone beam computed tomography. By understanding the effects of cleft palate on tooth morphology, the multidisciplinary team of specialists involved with the care and treatment of a patient with cleft lip/palate can better understand the intricacies of necessary therapy. This understanding can, in turn, be used for proper planning of desired treatments which can increase the chance of successful achievement of desired outcomes. Materials and Methods: CBCT volumes for 18 patients …
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
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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 …
Temporomandibular Joint Function After Orthognathic Surgery, Aikaterini Kleopatra Aslanidou
Temporomandibular Joint Function After Orthognathic Surgery, Aikaterini Kleopatra Aslanidou
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Orthognathic surgery has 3 basic goals: function, esthetics and stability. The relationship between orthognathic surgery and temporomandibular joint function remains highly controversial. Regarding the functional changes and range of mandibular movements after surgery, mandibular hypomobility and other signs and symptoms of joint dysfunction are associated with orthognathic surgery in the literature. The aim of this study is to evaluate the function of the temporomandibular joints at lest 6 months after orthognathic surgery and compare them with non-surgical subjects. The null hypothesis is that there is no difference in subjective symptoms reported by the subjects and clinical evaluation of the range …
A Randomized Trial To Evaluate The Effect Of Allograft Bone Particle Size On Histomorphometric And Clinical Outcomes Following Ridge Augmentation Procedures, Hussein Basma
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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 …
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
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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 …
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 …
Validation Of Mixed Dentition Analysis Method For Northern Thai Population, Wannapa Chinadet
Validation Of Mixed Dentition Analysis Method For Northern Thai Population, Wannapa Chinadet
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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 …
Incisor Contact In Optimal Occlusion, Ryan Baker
Incisor Contact In Optimal Occlusion, Ryan Baker
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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 …
The Effect Of Temperature On Different Resin Cements Used For Cementing A Milled Titanium Bar, Firas Mourad
The Effect Of Temperature On Different Resin Cements Used For Cementing A Milled Titanium Bar, Firas Mourad
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Purpose: To investigate the effect of acrylic processing on push-out strength of Ti copings luted to Milled Ti frameworks using differing resin cements. Materials and Methods: The experimental design consisted of three groups of 30 specimens each. Three different luting cements were utilized (One for each group), Panavia V5 Dual Cure Kuraray, Multilink Dual Cure Hybrid Ivoclar-Vivadent, and RelyX Unicem-2 self-adhesive 3M. The experimental model consists of trans-mucosal Titanium Coping, Abutment analog, Milled Ti hollow cylinder (9.0mm-OD) represents the milled Ti bar. The Abutment copings were luted to milled-Ti cylinders using the 3 dental cements and an alignment jig to …
A Comparison Of Soft Tissue Topographical Norms For The Local Ethnic People Of Zimbabwe And African American Norms Based On 3dmd Soft Tissue Photography, Elvin Bhaskar
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Introduction: The purpose of this study is to determine the soft tissue topographical norms for the local ethnic people of Zimbabwe and compare them with the African American norms based on 3dMD soft tissue photography. The rationale for the study is to evaluate how the soft tissue drape over the facial skeleton correlates with the different soft tissue analysis widely available today. This study seeks to establish an average base on which clinicians can treat people according to their cultural esthetic perceptions. Previous reported studies only evaluate small numbers of populations and it is well known that different races and …
Volumetric Analysis Of The Lips In Aging African American And Caucasian Females, David William Bowen
Volumetric Analysis Of The Lips In Aging African American And Caucasian Females, David William Bowen
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The objective of this study was to perform a volumetric analysis of the lips at rest and upon smiling in African American and Caucasian females distributed throughout five age groups. Materials and Methods: Three-dimensional surface facial images of 100 African American females and 100 Caucasian females were obtained using the 3dMDTMface system (3dMDface, Atlanta GA). Images were analyzed using the Aging Evaluation Analysis (AEVA) software (Eotech, Paris, France) to assess lip volume at rest and upon smile. The following linear measurements were also calculated upon smiling and non-smiling: subnasale-stomion superius, commissure-commissure, stomion inferius-labiomental sulcus. Gingival display and crown length was …
Retentive Strength At The Zirconia Implant Abutment And Titanium Base Interface With Different Surface Treatments, Celin Arce
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Screw-retained zirconia implant crowns with an internal titanium base have favorable mechanical properties compared to single piece zirconia implant crowns; however, they require adequate bonding between the zirconia crown and the titanium base. This study measures the retention between a titanium base and a full contour zirconia implant crown following different surface treatments of their bonded surfaces. Full contour zirconia implant crowns were fabricated to fit a 3.5mm titanium base. The crowns were bonded to the titanium bases following 4 protocols (n=15): no surface treatment (Group 1), MDP-primer on the intaglio of crown and exterior of base (Group 2), alumina …
Effect Of Margin Design On Fracture Strength Of Zirconia Crown, Eleni Voltidi
Effect Of Margin Design On Fracture Strength Of Zirconia Crown, Eleni Voltidi
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Purpose: To compare the fracture load of monolithic Zirconia crowns and E-max crowns with different margin designs and to create a guideline for margin design for monolithic Zirconia crowns. Methods: Digital design of prep maxillary molar tooth was performed with TOC 20 degrees and occlusal reduction 1 mm and axial reduction 1 mm and two different margin designs (group 1: Shoulder 0.8mm group 2: Light Chamfer 0.3mm). Dies were milled using Ultra Crystal material. Monolithic Zirconia crowns were milled (n=9 in group 1 and n=8 in group 2). Crowns were cemented with Rely X luting Plus. The specimens were stored …
Consequences Of Trps1 Deficiency On Dentinogenesis, Morgan Goss
Consequences Of Trps1 Deficiency On Dentinogenesis, Morgan Goss
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Dentinogenesis is a complex process of dentin formation. It involves differentiation of odontoblasts, the cells that make dentin, and the formation of a unique extracellular matrix, known as dentin. Dentin is ultimately produced through the interaction of collagen fibers, non-collagenous proteins and hydroxyapatite (HA) crystals. Odontoblasts are cranial neural crest (CNC) ectomesenchymal derived cells. Trps1 is a novel transcription factor believed to play an important role in both tooth formation and the mineralization process. TRPS1 gene mutations are known to result in dental and skeletal abnormalities manifested in humans as tricho-rhino-phalangeal syndrome (TRPS) and Ambras syndrome. Trps1 expression varies throughout …
The Accuracy Of A Clinician's Assessment Of Insertion Torque At Implant Placement, Britany Fabian Matin
The Accuracy Of A Clinician's Assessment Of Insertion Torque At Implant Placement, Britany Fabian Matin
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Background: Primary implant stability contributes to the success of dental implant placement and affects long-term function. Factors that contribute to the primary stability and osseointegration of a dental implant include the quality and quantity of bone present at the site of placement as well as the shape and surface treatment of the implants. There are numerous methods that assist the clinician in determining implant stability during placement and to confirm osseointegration after a period of healing. Their reliability to predict implant success, however, has not been proven. Torque measurements acquired during implant placement have been used as a method for …
The Effect Of Bone-Implant Contact And Elastic Modulus In The Biomechanical Stability Of Temporary Anchorage Devices, Ghada Nimeri
The Effect Of Bone-Implant Contact And Elastic Modulus In The Biomechanical Stability Of Temporary Anchorage Devices, Ghada Nimeri
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ABSTRACT The purpose of this study was to analyze the microstrains of compact and trabecular bone caused by loading of different miniscrews at different healing times, and to compare these results to the limits of bone stability maintenance based on the Frost Mechanostat Theory. Materials and Methods: Theoretical calculations of microstrains of bone surrounding 10 different miniscrews were done. These miniscrews were considered under loading forces of 500 gm., and the microstains of both trabecular and compact bone were calculated separately when the thickness of the compact bone was at 1mm or 2mm. The microstrains were calculated at 4 different …
Comparison Of Three Fluoride Dentifrice Products In The Prevention Of White Spot Lesions In Orthodontic Treatment, Anna B. Palombini
Comparison Of Three Fluoride Dentifrice Products In The Prevention Of White Spot Lesions In Orthodontic Treatment, Anna B. Palombini
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Introduction:. During the course of orthodontic treatment, enamel decalcification is a common problem. Demineralized enamel, the precursor to caries formation, can be attributed to fixed orthodontic appliances and prolonged exposure to bacterial plaque. Progression to clinically detectable white spot lesions may occur as early as one month following the placement of orthodontic appliances. Such problems have influenced clinicians to search for a solution. Because fluoride treatment immediately upon debonding is not advocated, clinicians have proposed fluoride treatment and fluoride-releasing materials at the commencement of the therapy. The two new anti-cavity toothpastes, ClinproTM 5000 with 1.1% Sodium Fluoride and ClinproTM Tooth …
A Prospective Randomized Clinical Trial To Assess The Performance Of Microtextured Dental Implants With Or Without A Machined Collar- 1 Year Results, Elizabeth Felts Randall
A Prospective Randomized Clinical Trial To Assess The Performance Of Microtextured Dental Implants With Or Without A Machined Collar- 1 Year Results, Elizabeth Felts Randall
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Aim: To assess the performance of microtextured dental implants with or without a machined collar at one year after placement. Material and Methods: Fifty-eight patients received dental implant therapy to restore missing teeth in one area of the maxilla or man-dible at the UAB Department of Graduate Periodontology. Residents in the program placed microtextured implants with a microtextured collar with microgrooves (test group) and microtextured implants with a machined collar (control group). Sites were randomized to the test group or control group. Study visit protocol was followed and implants were restored by off-site dentists. Sixty-nine (69) implants were assessed at …