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Full-Text Articles in Dentistry

Crown Fatigue Resistance And Enamel Wear Of 3d Printed Resin Compared To Lithium Disilicate, Pranit Vasant Bora Jan 2024

Crown Fatigue Resistance And Enamel Wear Of 3d Printed Resin Compared To Lithium Disilicate, Pranit Vasant Bora

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Purpose: The purpose of this study is to compare the wear characteristics and fatigue resistance of two dental crown materials: SprintRay Ceramic Crown, a 3D-printed resin material, and IPS™ e.Max CAD, a lithium disilicate material. Methods: This study evaluates wear and fatigue characteristics of dental crowns made from Ceramic Crown (SprintRay) and IPS e.max CAD LT (Ivoclar). For fatigue testing, custom fatigue devices were utilized to subject the crowns to cyclic loading, simulating occlusal forces. The specimens underwent 100,000 cycle intervals until 1.5 million cycles at a load of 40N of fatigue loading, with inspections conducted for signs of debonding, …


Effect Bioactive Material Have On Tooth Demineralization, Taillk Gomes Jan 2024

Effect Bioactive Material Have On Tooth Demineralization, Taillk Gomes

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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).


Functional Analysis Of Mandibular Movements In Three Different Groups Including Patients With Total Joint Replacements, Previous Orthognathic Surgery, And A Control Group, Adriana Morales Buendia Jan 2024

Functional Analysis Of Mandibular Movements In Three Different Groups Including Patients With Total Joint Replacements, Previous Orthognathic Surgery, And A Control Group, Adriana Morales Buendia

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Purpose: To Assess mandibular movements, including mouth opening, lateral excursion, and protrusion among patients with total joint replacements and orthognathic surgery compared to healthy control participants with no known TMJ disorders. Methods: Fifty-two subjects from 18 to 66 years of age were included in this cross-sectional study, distributed in three groups: patients with total joint replacement (n = 16), patients who underwent orthognathic surgery (n=17), and healthy control subjects (n = 19) to quantitatively determine whether there is statistically significant difference among the groups regarding opening, lateral excursion, and protrusion movements. The non-invasive system SiCAT JMT+ device was used to …


Physical And Optical Properties Of Material Used For Injection Molding, Nadia Christine Farias Machado Jan 2024

Physical And Optical Properties Of Material Used For Injection Molding, Nadia Christine Farias Machado

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Background: This project investigates the materials used in injection molding dental resin composites which involves injecting flowable composite into a clear mold. Understanding the physical and optical properties of both the resin composite and the clear mold material is crucial for successful clinical outcomes. For the clear mold material, its translucency, curing light transmission, and rigidity are vital factors. Correlations may be present between trans-lucency and curing light transmission. For the resin composite, comparing wear, hardness, translucency, radiopacity, shrinkage stress, flexural strength, and modulus will affect mate-rial performance. Finally, the depth of cure of the material will be dependent on …


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 Jan 2023

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 …


An In Vitro Assessment Of The Antibacterial Activity, Biocompatibility, And Mineralization Inducing Potential Of Biodentine®Xp, Chandani Arjun Mantri Jan 2023

An In Vitro Assessment Of The Antibacterial Activity, Biocompatibility, And Mineralization Inducing Potential Of Biodentine®Xp, Chandani Arjun Mantri

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Purpose: The purpose of this study was to assess the in-vitro antibacterial activity, biocompatibility, and mineralization-inducing potential of Biodentine® XP. Methods: Four contemporary pulp capping materials, namely Dycal®, a calcium hydroxide, Theracal® LC, a resin calcium silicate and, tricalcium silicates namely Biodentine®, and Biodentine® XP were compared in the study. The antibacterial activity of the pulp capping materials included in the study was evaluated against Streptococcus mutans UA159 and Enterococcus faecalis ATCC 29212 and were determined by the direct culture test. The biocompatibility of these materials in preodontoblastic 17IIA11 cells were compared by the MTT assay and mineralization-inducing potential in …


A Prospective Randomized Clinical Trial To Compare Side Access Mucosal Releasing Incision (Samri) And Sulcular Tunnel Access And Root Coverage Procedures With Coronally Advanced Flap And Acellular Dermal Matrix (Adm) To Treat Teeth With Gingival Recession And Lack Of Adequate Keratinized Tissue. A Pilot Study, Wangsoo Lee Jan 2023

A Prospective Randomized Clinical Trial To Compare Side Access Mucosal Releasing Incision (Samri) And Sulcular Tunnel Access And Root Coverage Procedures With Coronally Advanced Flap And Acellular Dermal Matrix (Adm) To Treat Teeth With Gingival Recession And Lack Of Adequate Keratinized Tissue. A Pilot Study, Wangsoo Lee

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Aims. The aim of this prospective, randomized, blinded, controlled clinical trial was to compare clinical and patient-centered outcomes of Cairo recession type 1 (RT1) gingival recession defects treated with acellular dermal matrix (ADM) grafts and either Side Access Mucosal Releasing Incision (SAMRI) or Sulcular Tunnel Access (STA) techniques with coronal flap advancement (CAF). Methods. 11 patients, 22 surgical procedures and 81 gingival recession defect sites with Cairo RT1 gingival recession and £ 2mm of keratinized tissue at each site were randomly divided into two groups (A: SAMRI, B: STA) and were treated and evaluated for 12 months post-surgically. Clinical measurements …


Effectiveness Of The Invisalign System For Deep Bite Correction, Jerry D. Spillers Iii Jan 2023

Effectiveness Of The Invisalign System For Deep Bite Correction, Jerry D. Spillers Iii

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Objective: To assess the dental and skeletal changes resulting from correction of a deep bite using Invisalign (Align Technology, Santa Clara, CA, USA).Methods: This is a retrospective case series study which analyzed pre and post treatment cephalograms for 37 adult deep bite patients. Each patient was treated by one, experi-enced clinician using the same treatment protocols. Nineteen variables, ten linear and nine angular. The Wilcoxon analysis was used to determine if there was a significant dif-ference in pre and post treatment variables. Results: Statistically significant differences (P<0.05) occurred for 14 of 19 variables. These include a decrease in Overjet (-0.97 mm), decrease in overbite (-4.07 mm), extru-sion of the upper first molar (0.47 mm), intrusion of the upper incisor (-0.67mm), extru-sion of the lower second molar (1.01 mm), lower first molar (1.20 mm), lower second premolar (1.70 mm), and lower first premolar (1.74 mm), intrusion of the lower incisor (-1.88 mm), proclination of lower incisor, (4.09 ̊), and increase in SN-MP (0.54 mm). A decrease in anterior occlusal plane (AOP) was also statistically significant. Conclusions: Invisalign is an effective treatment modality for correcting dental deep bites through posterior extrusion and anterior intrusion. Minimal skeletal changes are seen when correcting deep bites with Invisalign.


Lateral Ridge Augmentation Using Allograft Bone Particles Hydrated With Or Without Recombinant Human Platelet-Derived Growth Factor: A Clinical And Histological Randomized Controlled Trial, Lauren Miele Jan 2023

Lateral Ridge Augmentation Using Allograft Bone Particles Hydrated With Or Without Recombinant Human Platelet-Derived Growth Factor: A Clinical And Histological Randomized Controlled Trial, Lauren Miele

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Lateral ridge augmentation is a common procedure to increase the width of bone in preparation for a dental implant. A certain thickness of bone is necessary for implant health, making ridge augmentation procedures necessary for many patients. Research into the use of growth factors in ridge augmentation is ongoing, but few studies have examined the use of recombinant human platelet-derived growth factor homodimer (rhPDGF-BB) in ridge augmentation. This study examines histologic, clinical, and patient reported outcomes when horizontal ridge augmentation is completed using freeze dried bone allograft hydrated in rhPDGF-BB or saline and a resorbable crosslinked collagen membrane. Histologic results …


Comparing Volumetric Wear Of Lithium Disilicate Against Different Ceramics And Enamel Antagonist An In-Vitro Study, Krisha Shah Jan 2023

Comparing Volumetric Wear Of Lithium Disilicate Against Different Ceramics And Enamel Antagonist An In-Vitro Study, Krisha Shah

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Background: In patients with restored dentitions, it is possible for crowns on opposing teeth to gradually wear each other through chewing and bruxism. Therefore, the wear of restorative materials used for dental crowns is an important mechanical property for their long-term clinical success. Lithium disilicate is a widely used dental ceramic due to its strength, machinability, and translucency. Due to the rising use of ceramic restorations, a comparison of the wear resistance of lithium disilicate against different ceramic crown materials is useful for the clinician when selecting a crown material to oppose an existing lithium disilicate crown. Objective: To compare …


Randomized Control Trial Of A Novel Dental Gel As An Adjunct To Scaling And Root Planing In Subjects With Stage Ii & Iii Periodontitis, Sarah Pham Jan 2023

Randomized Control Trial Of A Novel Dental Gel As An Adjunct To Scaling And Root Planing In Subjects With Stage Ii & Iii Periodontitis, Sarah Pham

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The current standard of care for treating chronic periodontitis is scaling and root planing (ScRP) followed by supportive periodontal therapy (SPT) (Cobb et al., 2021; Ramfjord et al., 1987). The goal of ScRP is to eliminate supra- and subgingival bacterial deposits and to reduce periodontal pathogens, inflammation, and pocket depths (Greenstein, 2000). Although ScRP has been shown to significantly improve baseline clinical parameters, moderate to advanced cases may require additional surgical therapy which many patients resist (Stambaugh, 1981; Becker et al., 2001). Currently, no dentifrice used adjunctively has been proven to increase the therapeutic effects of scaling and root planing. …


Gain Of Keratinized Muscosa Around Dental Implants Using A Combination Of Strip Gingival Graft And Acellular Dermal Matrix - A Prospective Case Study, Louai Haddad Jan 2023

Gain Of Keratinized Muscosa Around Dental Implants Using A Combination Of Strip Gingival Graft And Acellular Dermal Matrix - A Prospective Case Study, Louai Haddad

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Several surgical techniques have been described to increase keratinized tissue (KT) around implants and teeth. Despite various methods, the bulk of evidence reported that the use of keratinized autogenous graft (i.e., Free Gingival Grafts (FGG)), harvested from the patient’s palate, remained the gold standard in soft tissue augmentation procedures and provided more predictable results. However, soft tissue autograft supply can be limited, and its harvesting is associated by increased patient morbidity. Several clinical studies have demonstrated the effectiveness of using allogenic soft tissue grafts such as Acellular Dermal Matrix Allograft (ADMA) instead of FGG to augment keratinized tissue (KT). This …


Role Of Dpy30 In The Epigenetic Regulation Of Odontoblast Differentiation In Vitro, Namrate Landge Rana Jan 2023

Role Of Dpy30 In The Epigenetic Regulation Of Odontoblast Differentiation In Vitro, Namrate Landge Rana

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Purpose: Dentin is produced from odontoblasts, derived from human Dental Pulp Cells (hDPCs), which are essential for dentin formation, remodeling, and mineral hemostasis. Epigenetic mechanisms are believed to be involved in odontoblast differentiation and function, and H3K4 methylation is associated with gene activation which is fundamental to histone-based epigenetics. The SET1/MLL complexes are mammals' major histone H3K4 methylation enzymes. DPY30 is a core subunit of SET1/MII complexes, mammalian's major histone H3K4 methyltransferases. It plays an important role in regulating fundamental processes including the determination of cell lineage, growth, and differentiation. Thus, histone-based epigenetic mechanisms are involved in odontoblast differentiation and …


Diagnostic Outcomes Of Digital Images For Comprehensive Examination In Pediatric Dentistry: An Intraexaminer Agreement Assessment, Maria Fernanda Montoya Jan 2023

Diagnostic Outcomes Of Digital Images For Comprehensive Examination In Pediatric Dentistry: An Intraexaminer Agreement Assessment, Maria Fernanda Montoya

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Purpose: To Assess intra-examiner diagnoses obtained via traditional oral clinical examination (TCE) versus digital oral examination (DOE) completed from digital video images of pediatric patients. Methods: Fifty pediatric patients 5 to 10 years of age, who attend the Pediatric Dentistry Clinic at the University of Alabama at Birmingham (UAB) for initial consultations or regular visits were included in this study. Individual oral comprehensive examinations were done by five second-year pediatric dentistry residents. A trained dental hygienist recorded a full mouth intraoral video for each patient via MouthWatch intraoral camera and stored using existing Information and Communication Technology (ICT) infrastructure. After …


Effect Of Different Supporting Die Materials And Crown Thicknesses On The Fracture Load Of Monolithic 3y-Tzp Zirconia And Lithium Disilicate Crowns, Akram Mohamed Mohamed Gad Sayed Ahmed Jan 2023

Effect Of Different Supporting Die Materials And Crown Thicknesses On The Fracture Load Of Monolithic 3y-Tzp Zirconia And Lithium Disilicate Crowns, Akram Mohamed Mohamed Gad Sayed Ahmed

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Background: Conventionally, the strength of dental materials used for fixed restorations is measured using specimens of simplified geometry (i.e bars or discs). There is value in measuring the strength of these materials in their anatomic geometry (i.e crowns) under clinically relevant loading conditions. One advantage of performing the so-called crown fracture test is that the material may benefit from its ability to be strengthened by its bond to a tooth-mimicking die. When performing a crown fracture test, the ideal die material is natural tooth structure. However, the variability in natural tooth anatomy and microstructure makes the use of a standardized, …


Nasal Septum Deviation In Patients With Or Without Impacted Canines, Naurine Shah Jan 2023

Nasal Septum Deviation In Patients With Or Without Impacted Canines, Naurine Shah

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There has been a recent rise in interest for studying the relationship between orthodontic treatment and the airway. Most studies have focused on measuring the oropharyngeal airway and how it is affected by growth with or without orthodontic treatment. The Nasal Septum, a midline structure is an integral part of the anatomy of the nasopharynx. Nasal Septum Deviations (NSD) can be caused by mechanical injuries, nasal polyps, neoplasia, infections, genetic influences as well as congenital malformations. The proximity of the septum can be correlated to changes in the housing of dentition in the naso maxillary complex. Objective: We aim to …


Relative Efficacy Of Innovative Endodontic Antimicrobial Agents, Ziqi Sally Liu Jan 2023

Relative Efficacy Of Innovative Endodontic Antimicrobial Agents, Ziqi Sally Liu

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Purpose: Novel endodontic antimicrobial agents would potentially improve outcomes of endodontic treatment, including regenerative endodontic therapy. The aim of this study was to determine the efficacy of a novel experimental compound, analogue #66, compared to tigecycline and other controls in an ex-vivo model. Materials and Methods: MIC determination with tigecycline and analogue #66 was done for Streptococcus mutans and Streptococcus intermedius. Forty single rooted extracted teeth were inoculated weekly for three weeks with S. intermedius to create a biofilm. All teeth were instrumented to 40/06 to working length and irrigated with 5% NaOCl. Teeth were randomly divided into 4 groups …


Comparison Of Crown Fracture And Wear Resistence Of Resin 3d Printed Permanent Crown And Other Restorative Materials, Victor Moncada Jan 2023

Comparison Of Crown Fracture And Wear Resistence Of Resin 3d Printed Permanent Crown And Other Restorative Materials, Victor Moncada

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Statement of Problem: The resin for 3D printing permanent crowns is a recently approved material with limited literature evidence to support its in vitro properties. Comparing the mechanical properties such as fracture load (N) and wear resistance for 3D printing permanent restorations resins would represent a very good reference to consider future clinical decisions. Purpose: To investigate the fracture load (N) and wear resistance of the resins for 3D printing permanent crowns available in the U.S. dental market and to compare amongst them using lithium disilicate as a reference. Materials and Methods: for the crown fracture test, the experimental design …


Accuracy Of "Reading" Untraced Lateral Cephalometric Radiographs Among Practicing Orthodontists, Shannon Rea Jan 2023

Accuracy Of "Reading" Untraced Lateral Cephalometric Radiographs Among Practicing Orthodontists, Shannon Rea

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Objective: To determine if orthodontic clinicians are able to ascertain diagnostic information from untraced lateral cephalometric radiographs. Materials and Methods: A survey consisting of 5 cases was presented to practicing orthodontists. Each case presented a lateral cephalometric radiograph and included ten questions requiring the respondent to make clinical judgments and approximations of the following variables: skeletal classification, maxilla and mandibular skeletal relationship, SNA, SNB, ANB, vertical skeletal classification, FMA, molar relationship, maxillary incisor proclination, and mandibular incisor proclination. 46 responses were collected and analyzed. Results: Case 3, the normodivergent, Skeletal Class I patient had the highest percentage of correct answers …


Comparison Of Flexural Strength, Fracture Toughness, And Color Stability Of Cad/Cam 3d-Printed Denture Base Materials To Milled And Conventional Heat-Polymerized Materials: An In Vitro Study, Yamen Safadi Jan 2023

Comparison Of Flexural Strength, Fracture Toughness, And Color Stability Of Cad/Cam 3d-Printed Denture Base Materials To Milled And Conventional Heat-Polymerized Materials: An In Vitro Study, Yamen Safadi

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Digitalization of the design and manufacturing of complete dentures streamlines the clinical and laboratory processes and provides increased efficiency and enhanced denture quality.[1, 2] The two most common CAD/CAM techniques for denture base manufacturing are additive (3D-printing) and subtractive (milling) manufacturing. Milled denture bases have been proven to be comparable in their physical and mechanical properties to conventional heat-polymerized denture bases,[3-6] and in many studies found to be superior to 3D-printed denture bases.[7-13] However, 3D-printing offers many advantages over milling that appeal to both clinicians and dental technicians related to investment and operational costs, maintenance, speed of manufacturing, diversity of …


Comparison Of Radiological Signs To Clinical Symptoms In Children With Jia. A Pilot Study, Shubham Sharma Jan 2023

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 …


A Prospective Randomized Clinical Trial To Compare Side Access Mucosal Releasing Incision (Samri) And Sulcular Tunnel Access And Root Coverage Procedures With Coronally Advanced Flap And Acellular Dermal Matrix (Adm) To Treat Teeth With Gingival Recession And Lack Of Adequate Keratinized Tissue. A Pilot Study, Karen Younghee Jo Jan 2022

A Prospective Randomized Clinical Trial To Compare Side Access Mucosal Releasing Incision (Samri) And Sulcular Tunnel Access And Root Coverage Procedures With Coronally Advanced Flap And Acellular Dermal Matrix (Adm) To Treat Teeth With Gingival Recession And Lack Of Adequate Keratinized Tissue. A Pilot Study, Karen Younghee Jo

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Aims. The primary aim of this randomized, blinded, controlled clinical trial was to compare clinical and patient-centered outcomes obtained following soft tissue grafting utilizing the Side Access Mucosal Releasing Incision (SAMRI) or Sulcular Tunnel 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. Methods. Five patients and eight recession defect sites with Miller Class I or II gingival recession and £ 2mm of keratinized tissue at each site were randomly divided into two groups (A: SAMRI, B: STA) and were treated and evaluated for …


Clinical Decision-Making: A Survey On The Influence Of Specialty And Experience In Treatment Planning Of Multidisciplinary Cases, Rawan Oueis Jan 2022

Clinical Decision-Making: A Survey On The Influence Of Specialty And Experience In Treatment Planning Of Multidisciplinary Cases, Rawan Oueis

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Objective: to evaluate the effect of specialization and experience on treatment planning multidisciplinary cases. Materials and Methods: A survey presenting 7 clinical scenarios and their potential treatment plans was designed and disseminated electronically to five groups of dentists (general dentists, endodontists, prosthodontists, orthodontists, periodontists). 509 responses were collected and analyzed for distribution and levels of agreement. Results: A moderate kappa was found (k=0.4-0.6) between endodontists and periodontists and within endodontists. There was no agreement on the type of restorations that are used between different specialties and within specialties of different years of experience. Conclusion: Specialists and general dentists use a …


The Difference In Fracture Strength Of Translucent Zirconia (5y-Z) Using Different Cements And Surface Treatments, Esra Elamin Jan 2022

The Difference In Fracture Strength Of Translucent Zirconia (5y-Z) Using Different Cements And Surface Treatments, Esra Elamin

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Statement of Problem: With the recent advent of translucent and ultra-translucent zirconia, it is unknown if this type of high-strength ceramic restoration requires adhesive cementation to enhance retention as well as the effect of surface treatment thus its clinical applicability requires further investigation. Purpose: To investigate the difference in fracture strength of translucent zirconia (5Y-Z) using different crown thickness, different cements under different surface treatment conditions. Materials and Methods: The experimental design consisted of five groups of 30 specimens each. Two different cements were utilized under different surface treatment conditions. Copings of (1.0 mm) uniform thickness were milled of 3Y-zirconia …


Effect Of Saliva Contamination On Crown Retention Strengths Of Resin And Rmgi Cements, Bushra Nizami Jan 2022

Effect Of Saliva Contamination On Crown Retention Strengths Of Resin And Rmgi Cements, Bushra Nizami

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Background: The most common contaminant in the oral cavity is saliva. Many studies have shown that contamination with saliva negatively affects the strength of the resin-dentin bond. A literature review by Nair et al reported that 64.6% of studies on the topic show a detrimental effect of salivary contamination on adhesive materials. No published studies were found that thoroughly studied the effects of saliva contamination on RMGIs and resin cements with regards to crown retention rates. Objective: To study the effect of salivary contamination on crown retention strengths of RMGI and resin cements at various stages of bonding and in …


A Comparison Of Growth Factor Release Between Platelet Rich Fibrin And Recombinant Human Platelet Derived Growth Factor Bb (Rhpdgf-Bb) And Beta-Tricalcium Phosphate: An In Vitro Analysis, Maggie Ann Misch Jan 2022

A Comparison Of Growth Factor Release Between Platelet Rich Fibrin And Recombinant Human Platelet Derived Growth Factor Bb (Rhpdgf-Bb) And Beta-Tricalcium Phosphate: An In Vitro Analysis, Maggie Ann Misch

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Patients presenting with significant alveolar bone loss can pose challenges for the clinician. Traditional bone augmentation techniques may be inadequate in achieving necessary gains to restore missing teeth with dental implants. The adjunctive use of growth factors may accelerate the healing process and enhance tissue regeneration. GEM21S is a product that includes a recombinant growth factor approved by the Federal Drug Administration for oral surgery. It is delivered as a two-component system: 1) recombinant human platelet-derived growth factor-BB (rhPDGF-BB) and 2) betatricalcium phosphate (β-TCP).[1] The research on GEM 21S for ridge augmentation is mostly limited to case studies.[2- 4] Biologically, …


Measuement Of Translucency, Biaxial Flexural Strength, And Radiopacity Of Different Lithium Disilicate Materials, Preshtha Mangla Jan 2022

Measuement Of Translucency, Biaxial Flexural Strength, And Radiopacity Of Different Lithium Disilicate Materials, Preshtha Mangla

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Objective: To measure translucency parameter, biaxial flexural strength, radiopacity and microstructure of various lithium disilicate materials used for dental restorations. Materials and Methods: CAD/CAM lithium disilicate glass-ceramic blocks: IPS e.max CAD (Ivoclar Vivadent), CerecTessera (Dentsply Sirona), and Amber Mill (Hassbio America) were used (shade A2, HT, and MT). Blocks of each material were milled (PrograMill PM7, Ivoclar Vivadent) into cylinders (diameter = 14 mm) and cut using circular sectioning saw (IsoMET 1000 Precision Saw, Buehler) into disc-shaped specimens (thickness = 1.00 ± 0.05 mm) (n=5/group). They were hand polished to 1200 grit with SiC paper under water lubrication. The translucency …


An Evaluation Of The In Vitro Antibacterial, Biocompatibility, And Mineralization Properties Of Six Calcium Silicate-Based Pulp Capping Materials, Taimy Cruz Hondares Jan 2022

An Evaluation Of The In Vitro Antibacterial, Biocompatibility, And Mineralization Properties Of Six Calcium Silicate-Based Pulp Capping Materials, Taimy Cruz Hondares

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Purpose: The purpose of this study was to evaluate the antibacterial activity, biocompatibility, and mineralization-inducing potential of calcium silicate-based pulp capping materials. Methods: Six contemporary calcium silicate-based pulp capping materials were compared in this study, including ProRoot MTA, MTA Angelus, Biodentine, EndoSequence, NeoMTA 2 and NeoPutty. The antibacterial effects of these materials against Streptococcus mutans UA159 and Enterococcus faecalis ATCC 29212 were determined by the agar-diffusion assay and the direct culture test. The biocompatibility and mineralization-inducing potential of these materials in preodontoblastic 17IIA11 cells were compared by the MTT assay and by evaluating alkaline phosphatase activity and calcium deposits, respectively. …


Optimal Antero-Posterior Position Of The Maxillary Central Incisors And Its Relationship To The Forehead In Adult Hispanic Females, Balraj Bains Jan 2022

Optimal Antero-Posterior Position Of The Maxillary Central Incisors And Its Relationship To The Forehead In Adult Hispanic Females, Balraj Bains

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Objective: The objective of this study is to investigate the relationship of forehead inclination to anteroposterior position (AP) of the maxillary central incisors in adult Hispanic females. Materials and Methods: 70 participants were recruited for this study and smiling profile photographs were taken. All images were deidentified and placed in standardized dimension of 7.5” by 6.5”, which were then added to a PowerPoint to be evaluated by a judging panel. 24 Adult Hispanic Females (AHF) made up the control group and were seen to have an optimal incisor AP position. 46 AHF were in the study group and were judged …


The Effect Of Maxillary Sinus Anatomical Variations, Surgical Considerations, And Patient Factors On Volumetric Changes Following Lateral Wall Sinus Floor Elevation Technique For Up To 8 Years, Mengyi Shi Jan 2022

The Effect Of Maxillary Sinus Anatomical Variations, Surgical Considerations, And Patient Factors On Volumetric Changes Following Lateral Wall Sinus Floor Elevation Technique For Up To 8 Years, Mengyi Shi

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jectives: The aim of this retrospective study is to assess the long-term dimensional stability, or shrinkage, of the lateral window sinus grafts using cone beam computed tomography scans (CBCT) and radiographic software. Material and Methods: All patients from UAB Periodontal Graduate Clinic with available records of sinus augmentation via the lateral window approach with delayed implant placement between 2014 and 2019 were screened for having two follow up CBCT scans of diagnostic quality. The first scan must be completed within 6-9 months of lateral window sinus floor elevation (LWSFE) and prior to implant placement. The second CBCT must be taken …