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2020

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September 24, 2020, James Madison University Sep 2020

September 24, 2020, James Madison University

The Breeze, 2020-

The Breeze is the student newspaper of James Madison University in Harrisonburg, Virginia.

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Additively Manufactured Parametric Universal Clip-System: An Open Source Approach For Aiding Personal Exposure Easurement In The Breathing Zone, Kirsi Kukko, Jan Sher Akmal, Anneli Kangas, Mika Salmi, Roy Björkstrand, Anna-Kaisa Viitanen, Jouni Partanen, Joshua M. Pearce Sep 2020

Additively Manufactured Parametric Universal Clip-System: An Open Source Approach For Aiding Personal Exposure Easurement In The Breathing Zone, Kirsi Kukko, Jan Sher Akmal, Anneli Kangas, Mika Salmi, Roy Björkstrand, Anna-Kaisa Viitanen, Jouni Partanen, Joshua M. Pearce

Michigan Tech Publications, Part 1

Design for additive manufacturing is adopted to help solve problems inherent to attaching active personal sampler systems to workers for monitoring their breathing zone. A novel and parametric 3D printable clip system was designed with an open source Computer-aided design (CAD) system and was additively manufactured. The concept was first tested with a simple clip design, and when it was found to be functional, the ability of the innovative and open source design to be extended to other applications was demonstrated by designing another tooling system. The clip system was tested for mechanical stress test to establish a minimum lifetime …

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The Role Of Microhabitats In Structuring Cave Invertebrate Communities In Guatemala, Gabrielle S.M. Pacheco, Marconi Souza Silva, Enio Cano, Rodrigo L. Ferreira Sep 2020

The Role Of Microhabitats In Structuring Cave Invertebrate Communities In Guatemala, Gabrielle S.M. Pacheco, Marconi Souza Silva, Enio Cano, Rodrigo L. Ferreira

International Journal of Speleology

Several studies have tried to elucidate the main environmental features driving invertebrate community structure in cave environments. They found that many factors influence the community structure, but rarely focused on how substrate types and heterogeneity might shape these communities. Therefore, the objective of this study was to assess which substrate features and whether or not substrate heterogeneity determines the invertebrate community structure (species richness and composition) in a set of limestone caves in Guatemala. We hypothesized that the troglobitic fauna responds differently to habitat structure regarding species richness and composition than non-troglobitic fauna because they are more specialized to live …

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The Effect Of Artificial Aging And Surface Treatments On Microtensile Bond Strength Of Resin Cement To Hybrid Ceramics, Engy I. Hassan Shohdy, Shereen A. Nossair, Amina M. Hamdy Sep 2020

The Effect Of Artificial Aging And Surface Treatments On Microtensile Bond Strength Of Resin Cement To Hybrid Ceramics, Engy I. Hassan Shohdy, Shereen A. Nossair, Amina M. Hamdy

Future Dental Journal

Purpose: To assess the effect of aging and various surface treatments on the microtensile bond strength of resin cement to two hybrid esthetic materials. Materials and Methods: Zirconia-reinforced lithium silicate (Celtra Duo, Dentsply Sirona, United States) and hybrid resin nanoceramic (Cerasmart TM, GC Corporation, Japan) blocks were cut into plates of 3 mm thickness. Each ceramic material was surface treated either with hydrofluoric acid etching and silane or with sandblasting and silane. A dual-cured adhesive resin cement (Panavia TM V5, Kuraray, U.S.A.) was utilized to bond the composite resin plates to the surface treated ceramic plates. The ceramic-composite resin blocks …

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Assessment Of Antibacterial Properties And Compressive Strength Of Copaiba Oil –Modified Glass Ionomer Cement Versus Nanosilver Or Nanogold-Modified Glass Ionomer Cements: An In-Vitro Study, Rania Ezzat Bayoumi Assistant Professor, Shaymaa Ibrahim Habib Assistant Professor Sep 2020

Assessment Of Antibacterial Properties And Compressive Strength Of Copaiba Oil –Modified Glass Ionomer Cement Versus Nanosilver Or Nanogold-Modified Glass Ionomer Cements: An In-Vitro Study, Rania Ezzat Bayoumi Assistant Professor, Shaymaa Ibrahim Habib Assistant Professor

Future Dental Journal

Objectives: Evaluation of antibacterial activity of glass ionomer restorative material (GIC) after impregnation of copaiba oil, nanosilver (NanoAg) and nanogold (NanoAu) and their consequent effect on the compressive strength. Methodology: The different antibacterial solutions were added to Fugi IX GI liquid at various concentrations; 50 μL, 100 μL, 150 μL, 200 μL and 250 μL. Antibacterial activity against streptococcus mutans was evaluated by agar diffusion test (ADT) and direct contact test (DCT). Compressive strength was assessed according to ISO specifications. Bactericidal effect of the different investigated antibacterial agents on S. mutans biofilms was evaluated using Conofocal laser scanning microscope (CLSM). …

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Biofilm Forming Ability Of Bacteria Isolated From Dental Caries: With Reference To Streptococcus Species, Sonali Kaustubh Ambulkar, Vidya Tale, Abhijit Jadhav, Komal Kulkarni Sep 2020

Biofilm Forming Ability Of Bacteria Isolated From Dental Caries: With Reference To Streptococcus Species, Sonali Kaustubh Ambulkar, Vidya Tale, Abhijit Jadhav, Komal Kulkarni

Future Dental Journal

Dental caries is formed by the group of microorganisms attached to a tooth surface embedded in a matrix of polymers. Biofilm plays an important role in the development of dental caries, plaque and other periodontal diseases. The present study is aimed to isolate, identify and characterize bacteria from dental caries. The ability of biofilm formation of these isolates was confirmed by Congo red agar method, Tube method and Microtitre plate method. High biofilm-forming bacteria were identified by 16S rRNA sequencing. Streptococcus mutans, Streptococcus anginosus, Enterococcus faecalis and Rothia dentocariosa are the predominant biofilm forming bacteria associated with dental caries.

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Effect Of The Parotid Salivary Gland On Calcium And Amylase Enzyme Levels In Blood And Its Influence On Bone Healing In Albino Rats (Histological And Radiographic Study), Medhat A. El-Zainy, Ahmed Mahmoud Halawa, Radwa Taher Elsharkawy Sep 2020

Effect Of The Parotid Salivary Gland On Calcium And Amylase Enzyme Levels In Blood And Its Influence On Bone Healing In Albino Rats (Histological And Radiographic Study), Medhat A. El-Zainy, Ahmed Mahmoud Halawa, Radwa Taher Elsharkawy

Future Dental Journal

The healing potential of bone is influenced by a variety of biochemical, cellular, hormonal and pathological mechanisms. As previous studies stated that parotid salivary glands may have endocrinal role, the aim of this study was to evaluate the effect of parotidectomy on bone healing and on calcium and amylase enzyme levels in blood. The rats were divided into two groups; control and experimental group. The control group was subjected to unilateral surgical mandibular defects, while the experimental group was subjected to the same procedure in addition to bilateral surgical removal of the parotid glands. Each of the control and experimental …

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Internal Fit Of Lithium Disilicate And Resin Nano-Ceramic Endocrowns With Different Preparation Designs, Heba Darwish, Tarek Salah Morsi, Ayman Galal El Dimeery Sep 2020

Internal Fit Of Lithium Disilicate And Resin Nano-Ceramic Endocrowns With Different Preparation Designs, Heba Darwish, Tarek Salah Morsi, Ayman Galal El Dimeery

Future Dental Journal

Purpose: Investigation of different central cavity designs on internal fit of endocrowns fabricated from two materials. Materials and methods: Forty maxillary premolars were endodontically treated and divided into 8 groups [n ¼ 5]: LS10, LS6, LD10, LD6, ES10, ES6, ED10 and ED6 (“L” restored with Lava™ Ultimate [resin nano ceramic], “E” restored with IPS e.max® CAD [lithium disilicate], “S” shallow depth [3 mm], “D” extended depth [5 mm], “6”-degree and “10”-degree axial wall divergence). All restorations were fabricated using CEREC CAD/CAM system. Samples were tested for internal fit using CBCT imaging (Next Generation i-CAT scanner) before and after adaptation. Data …

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Efficacy Of Transforming Growth Factor- B On Development Of Ameloblasts And Odontoblasts In Tooth Germ Of Young Albino Rat, Medhat Ahmed El-Zainy, Khaled Nour El-Haddad, Raneem Farouk Obeid Sep 2020

Efficacy Of Transforming Growth Factor- B On Development Of Ameloblasts And Odontoblasts In Tooth Germ Of Young Albino Rat, Medhat Ahmed El-Zainy, Khaled Nour El-Haddad, Raneem Farouk Obeid

Future Dental Journal

Transforming growth factors were known as secreted factors that induced the growth of nontransformed cells. The study investigating the growth response of ameloblasts and odontoblasts to TGF-b. Four adult male and 12 adult female albino rats were used in this study. Mating took place between them. Female rats were divided into two groups each group consist of 6 rats: group I (control) rats were injected with 0.1 m1 phosphate buffer saline every two days from the first day till the labor time. Their offspring were considered the control group. Group II were injected intramuscular with TGF-b 40 ng dissolved in …

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Dealing With Transitions In Climate, Economic, And Political Conditions In Eurasia, D. S. Ojima, T. Chuluun, S. Temirbekov, T. Riley Sep 2020

Dealing With Transitions In Climate, Economic, And Political Conditions In Eurasia, D. S. Ojima, T. Chuluun, S. Temirbekov, T. Riley

IGC Proceedings (1977-2023)

No abstract provided.

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Using Microhistological Techiques To Predict Botanical Composition Of Horse Diets On Cool‐Season Grass Pasture, Jesse Ira Morrison, S. Ray Smith, Glen E. Aiken Sep 2020

Using Microhistological Techiques To Predict Botanical Composition Of Horse Diets On Cool‐Season Grass Pasture, Jesse Ira Morrison, S. Ray Smith, Glen E. Aiken

IGC Proceedings (1977-2023)

No abstract provided.

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Ecological Pratacultural Construction And Sustainable: Development Strategies In Guizhou, Bentian Mo, Changsong Feng, Xinshi Lu Sep 2020

Ecological Pratacultural Construction And Sustainable: Development Strategies In Guizhou, Bentian Mo, Changsong Feng, Xinshi Lu

IGC Proceedings (1977-2023)

No abstract provided.

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Effect Of Surface Protection, Staining Beverages And Aging On The Color Stability And Hardness Of Recently Introduced Uncoated Glass Ionomer Restorative Material, Dalia Mohamed Abdel-Hamid, Gouda Mahmoud, Fatma M. El-Sharkawy, Eman Aly Abou Auf Sep 2020

Effect Of Surface Protection, Staining Beverages And Aging On The Color Stability And Hardness Of Recently Introduced Uncoated Glass Ionomer Restorative Material, Dalia Mohamed Abdel-Hamid, Gouda Mahmoud, Fatma M. El-Sharkawy, Eman Aly Abou Auf

Future Dental Journal

Aim: Evaluation of the effect of coating, staining beverages and aging on the color stability and hardness of recently introduced glass ionomer (GI) restorative material and to determine whether there was a correlation between these two variables. Materials and methods: Two commercially available conventional GI restorative materials were used; Ketac™ Universal Aplicap™ and Ketac™ Fil Plus Aplicap™ GI restoratives. A total of 84 disc-shaped specimens (5×2 mm) were prepared and divided into 3 main groups (n=28). Fifty six specimens were prepared from Ketac Universal Aplicap where half of them was coated (CU) and the other half was uncoated (U) and …

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Characterization Of Nano-Hydroxyapatite Silica Gel And Evaluation Of Its Combined Effect With Solcoseryl Paste On Bone Formation: An Experimental Study In New Zealand Rabbits, Dalia Mohamed Abdel-Hamid, Safa F. Abdel El-Ghani, Mohamed M. Khashaba Sep 2020

Characterization Of Nano-Hydroxyapatite Silica Gel And Evaluation Of Its Combined Effect With Solcoseryl Paste On Bone Formation: An Experimental Study In New Zealand Rabbits, Dalia Mohamed Abdel-Hamid, Safa F. Abdel El-Ghani, Mohamed M. Khashaba

Future Dental Journal

Objective: Characterization of nano-hydroxyapatite (n-HAp) silica gel bone substitute and evaluation of its combined effect with Solcoseryl paste on bone formation experimentally in New Zealand rabbits. Materials and methods: Characterization of the n-HAp silica gel granules (NanoBone®, Artoss GmbH, German) was done by the SEM, EDX analysis and TEM. Simulated bone defect (10×5×1 mm) was constructed from metallic mold to standardize the amount of the grafting materials. Two defects (10×5×1 mm) were created in the parietal bones of 12 New Zealand White rabbits. The rabbits were randomly divided into 4 groups with 3 rabbits/group (n=6 defects/group). Group (C): The defects …

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Studying Some Mechanical Properties Of Maxillofacial Silicone Elastomer Before And After Incorporation Of Intrinsic Pigments And Artificial Aging, Noor M. Shihab, Faiza M. Abdul-Ameer Sep 2020

Studying Some Mechanical Properties Of Maxillofacial Silicone Elastomer Before And After Incorporation Of Intrinsic Pigments And Artificial Aging, Noor M. Shihab, Faiza M. Abdul-Ameer

Future Dental Journal

No abstract provided.

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Periodontal Regeneration Of Dehisence Defects Using A Modified Perforated Collagen Membrane. A Comparative Experimental Study, Rania Fahmy, Gehan S. Kotry, Omneya R. Ramadan Sep 2020

Periodontal Regeneration Of Dehisence Defects Using A Modified Perforated Collagen Membrane. A Comparative Experimental Study, Rania Fahmy, Gehan S. Kotry, Omneya R. Ramadan

Future Dental Journal

Placement of occlusive barrier membranes in guided tissue regeneration procedures is thought to deprive the wound area from the regenerative capacity of periosteal and gingival mesenchymal stem cells. The current study was performed to determine the effect of perforated collagen membranes in enhancing periodontal tissue regeneration when compared to conventional occlusive barriers. Sixteen critical-sized dehiscence defects (4×5 mm) were surgically created in the mandibular canine teeth of eight dogs, bilaterally. Eight defects were managed by β-Tricalcium phosphate (β-TCP) alloplast and modified perforated collagen membrane, the contra lateral defects were managed by β-TCP alloplast and occlusive collagen membrane. Dogs were sacrificed …

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Effect Of Xylitol And Sugar-Free Chewing Gums On Salivary Bacterial Count Of Streptococcus Mutans And Lactobacilli In A Group Of Egyptian School Children Of Different Ages: A Randomized Clinical Trial, Dina Hisham Abdelwahab, Gehan Gaber Allam, Amr Mahmoud Abdel Aziz Sep 2020

Effect Of Xylitol And Sugar-Free Chewing Gums On Salivary Bacterial Count Of Streptococcus Mutans And Lactobacilli In A Group Of Egyptian School Children Of Different Ages: A Randomized Clinical Trial, Dina Hisham Abdelwahab, Gehan Gaber Allam, Amr Mahmoud Abdel Aziz

Future Dental Journal

Aim: The purpose of this randomized clinical trial was to compare the effect of xylitol containing and sugar free brands of chewing gum on the salivary Colony Forming Unit (CFU) count of streptococcus mutans (SM) and lactobacilli (LB) cariogenic organisms in a group of Egyptian school children of different ages. Study design: This pragmatic randomized controlled trial (parallel group design) was approved by the Research Ethics Committee of the Faculty of Dentistry, Ain Shams University. Materials and methods: 42 high caries risk children (DMFT/dmft/deft of 3 or more) were randomly allocated to either the xylitol or polyol group. Each main …

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Educational Program To Improve Quality Of Life Among Elderly Regarding Oral Health, Abd–Allah Eman Shokrya, Mohammed Rehab Adel, Abo El-Seoud Amany Rashad Sep 2020

Educational Program To Improve Quality Of Life Among Elderly Regarding Oral Health, Abd–Allah Eman Shokrya, Mohammed Rehab Adel, Abo El-Seoud Amany Rashad

Future Dental Journal

Background: The ratio of elderly is rising faster than that of any other age group. The mutual relation between oral health and general health is specially stated among older people. Poor oral health affects negatively the quality of life among elderly. This study aimed to evaluate the effect of educational program on quality of life among elderly regarding oral health. Methods: A quasi-experimental pretest-and-posttest design was utilized in the geriatric social club in Zagazig City. A purposive sample of 75 elderly subjects who fulfilled the study inclusion criteria. Five tools were used as follow: Tool I: A structured interview questionnaire …

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Histologic And Histomorphometric Evaluation Of Lyophilized Amniotic Membrane In Bone Healing: An Experimental Study In Rabbit's Femur, Nesma Mohamed Khalil, Lydia Nabil Fouad Melek Sep 2020

Histologic And Histomorphometric Evaluation Of Lyophilized Amniotic Membrane In Bone Healing: An Experimental Study In Rabbit's Femur, Nesma Mohamed Khalil, Lydia Nabil Fouad Melek

Future Dental Journal

Amniotic membrane has been widely used in regenerative medicine especially ophthalmology. It has many advantages including anti-inflammatory, anti-fibrotic and antimicrobial properties. The purpose of the present work to study the effect of lyophilized human amniotic membrane on healing of bony defect in rabbits' femur. Eighteen male rabbits were used. Four mm wide and 5mm deep defect was created in the femur diaphysis bilaterally in each rabbit. The defect of the right side was left empty (control), while the left side was filled with the amniotic membrane (study). Six rabbits were scarified at each of the experimental periods 2, 4 & …

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Immunohistochemical Evaluation Of Cd44 Expression In Mucoepidermoid Carcinoma Of Human Salivary Glands, Mohamed Salah El-Din Ayoub, Marwa Mokbel El-Shafei, Wael Yousef Elias, Hala Ahmed El-Kammar Sep 2020

Immunohistochemical Evaluation Of Cd44 Expression In Mucoepidermoid Carcinoma Of Human Salivary Glands, Mohamed Salah El-Din Ayoub, Marwa Mokbel El-Shafei, Wael Yousef Elias, Hala Ahmed El-Kammar

Future Dental Journal

CD44 is a cell adhesion molecule that functions in cell proliferation, differentiation, migration and angiogenesis, as well as in signaling for cell survival. CD44 acts also as the main hyaluronan receptor. CD44 has been implicated to have a role in carcinogenesis. Aim of the study: In this study the expression of CD44 in mucoepidermoid carcinoma was detected and correlated with the histopathological grade. Material and methods: peroxidase-antiperoxidase immunohistochemical technique for the detection of CD44 expression in mucoepidermoid carcinoma. Results: There was no statistically significant difference between the expression of CD44 in high and low grade mucoepidermoid carcinoma. Yet, the pattern …

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Recent Advances In Understanding Theories Of Eruption (Evidence Based Review Article), Amany A. Rabea Sep 2020

Recent Advances In Understanding Theories Of Eruption (Evidence Based Review Article), Amany A. Rabea

Future Dental Journal

Eruption is; movement of the tooth from its developmental site in alveolar bone to its functional position in the oral cavity. Erupt has been a matter of long historical debate. Each of the eruption theories has a say in tooth eruption. So, the aim of this research is to explore the integration of eruption theories to understand the aetiology of the eruption process.

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Effect Of Diabetes Mellitus On Cementum Periodontal Interface In Streptozotocin-Induced Diabetic Rat Model, Medhat Ahmed El-Zainy, Ahmed Mahmoud Halawa, Fatma Adel Saad Sep 2020

Effect Of Diabetes Mellitus On Cementum Periodontal Interface In Streptozotocin-Induced Diabetic Rat Model, Medhat Ahmed El-Zainy, Ahmed Mahmoud Halawa, Fatma Adel Saad

Future Dental Journal

Objective: Diabetes Mellitus is well known to be associated with several oral complications. Thus, this study investigated the effect of diabetes on the cementum-periodontal interface by light and scanning electron microscopy. Methodology: This investigation was carried out on twenty eight male albino rats weighing from 200 to 220 gm; rats were divided into two groups: group I (control): fourteen animals received intraperitoneal single dose of 1 ml Citrate buffer, group II (diabetic): fourteen animals that were rendered diabetic by intraperitoneal single dose of streptozotocin 40 mg/kg body weight dissolved in 1 ml Citrate buffer and sacrificed 3 weeks after detection …

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Comparison Of Antibacterial Effect And Smear Layer Removal Of Herbal Versus Traditional Irrigants – An In Vitro Study, Rana Amr Mahmoud Elkhashab, Medhat Abdelrahman Kataiab, Wael Hussien Kamel, Marwa Shaaban Sep 2020

Comparison Of Antibacterial Effect And Smear Layer Removal Of Herbal Versus Traditional Irrigants – An In Vitro Study, Rana Amr Mahmoud Elkhashab, Medhat Abdelrahman Kataiab, Wael Hussien Kamel, Marwa Shaaban

Future Dental Journal

No abstract provided.

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Evaluation Of Eggshell Powder As An Experimental Direct Pulp Capping Material, Mohamed Salah, Mohamed Medhat Kataiaa, Engy M. Kataia, Enas Alaa El Din, Mona E. Essa Sep 2020

Evaluation Of Eggshell Powder As An Experimental Direct Pulp Capping Material, Mohamed Salah, Mohamed Medhat Kataiaa, Engy M. Kataia, Enas Alaa El Din, Mona E. Essa

Future Dental Journal

Aim: is to histopathologically evaluate dental pulp response to eggshell powder as a direct pulp capping material and compare it to Calcium Hydroxide as regard to inflammation, calcific bridge formation and fibrosis. Material and methods: 30-New Zealand rabbits were selected in this study and divided into 3 groups according to the time of sacrifice after pulp capping procedure (1, 2 and 4weeks). The two lower central incisors were used, where the pulp was exposed and capped directly by one of the two materials used in this study; Calcium Hydroxide (Dycal) or eggshell powder. The cavities were then sealed by glass …

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Effect Of Green Tea And Two Mulberry Leaf Extracts On Micro-Tensile Bond Strength To Dentin, Rania Mosallama, Nermin Younis, Hadeel Farouk, Osama Mosallam Sep 2020

Effect Of Green Tea And Two Mulberry Leaf Extracts On Micro-Tensile Bond Strength To Dentin, Rania Mosallama, Nermin Younis, Hadeel Farouk, Osama Mosallam

Future Dental Journal

Objective: This study was conducted to compare the effect of green tea and two Mulbery leaf extracts on microtensile bond strength immediately and after thermocycling. Material and methods: 42 freshly extracted molars were utilized in this study. Occlusal enamel was removed to expose mid coronal dentin and they were randomly divided into seven groups: G 1: Green tea water extract; G 2: Green tea alcohol extract; G 3: Morus nigra water extract; G 4: Morus nigra alcohol extract; G5: Morus alba water extract; G 6: Morus alba alcohol extract and Group 7: no pretreatment (control). Adhesive system was applied in …

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Modified Lateral Sinus Lift Using Disc-Form Silica Calcium-Phosphate Nanocomposite And Consequent Implant Placement, Arwa Hosnia, Waleed Ragab El-Beialyb, Mostafa Ezzc Sep 2020

Modified Lateral Sinus Lift Using Disc-Form Silica Calcium-Phosphate Nanocomposite And Consequent Implant Placement, Arwa Hosnia, Waleed Ragab El-Beialyb, Mostafa Ezzc

Future Dental Journal

No abstract provided.

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Assessment Of Bone Augmentation Using Silica Calcium Phosphate Nanocomposite (Scpc)Versus Hydroxyapatite In Open Sinus Lift Surgeries(A Scanning Electron Microscope, Cone Beam Computerized Tomography And Histological Study), Ahmed Abozekrya, Ragia Mounir, Nadia Galalb Sep 2020

Assessment Of Bone Augmentation Using Silica Calcium Phosphate Nanocomposite (Scpc)Versus Hydroxyapatite In Open Sinus Lift Surgeries(A Scanning Electron Microscope, Cone Beam Computerized Tomography And Histological Study), Ahmed Abozekrya, Ragia Mounir, Nadia Galalb

Future Dental Journal

Objectives: Maxillary sinus pneumatization and extraction of posterior maxillary teeth are among the most common factors attributing to the diminished alveolar process. Implants placed in posterior region of maxilla showed the highest failure rates due to poor bone density in addition to insufficient remaining bone volume needed for implant primary stability. Materials and methods: Ten patients were selected from out patient clinic with partially or fully edentulous maxilla missing premolars or molars with residual alveolar bone height less than 6 mm, both groups received open sinus lift surgery with different grafting material group1 (control group) received hydroxyapatite (HA)in a disc …

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Piezoelectric Surgery: Applications In Oral & Maxillofacial Surgery, Lobna Azziz Sep 2020

Piezoelectric Surgery: Applications In Oral & Maxillofacial Surgery, Lobna Azziz

Future Dental Journal

No abstract provided.

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Investigation Of The In Vitro Bioactivity Of Poly Methyl Methacrylate Bone Cement Loaded With Hydrated And Anhydrous White Portland Cement Powder, Dalia Y. Zaki Sep 2020

Investigation Of The In Vitro Bioactivity Of Poly Methyl Methacrylate Bone Cement Loaded With Hydrated And Anhydrous White Portland Cement Powder, Dalia Y. Zaki

Future Dental Journal

Purpose: In order to combine the advantages of bioactivity and low cost of Portland cement (PC) together with the fast setting and early high strength properties of Poly methyl methacrylate (PMMA); this study was directed to prepare and investigate the in vitro bioactivity of PMMA/PC composites for use as a bone cement. Materials and methods: Two PC concentrations (20 and 40 wt %) were used for the preparation of bone cement composites. Hydrated (PCH) and anhydrous (PCP) Portland cement powders were used as fillers to be added to commercially available PMMA bone cement. pH changes and ion release of PCP …

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Antibodies To Variable Domain 4 Linear Epitopes Of The Chlamydia Trachomatis Major Outer Membrane Protein Are Not Associated With Chlamydia Resolution Or Reinfection In Women, Amanda L. Collar, Alexandria C. Linville, Susan B. Core, Cosette M. Wheeler, William M. Geisler, David S. Peabody, Bryce Chackerian, Kathryn M. Frietze Sep 2020

Antibodies To Variable Domain 4 Linear Epitopes Of The Chlamydia Trachomatis Major Outer Membrane Protein Are Not Associated With Chlamydia Resolution Or Reinfection In Women, Amanda L. Collar, Alexandria C. Linville, Susan B. Core, Cosette M. Wheeler, William M. Geisler, David S. Peabody, Bryce Chackerian, Kathryn M. Frietze

Pathology Research and Scholarship

Chlamydia trachomatis is an obligate intracellular bacterium. C. trachomatis infection is the most prevalent bacterial sexually transmitted infection and can lead to pelvic inflammatory disease and infertility in women. There is no licensed vaccine for C. trachomatis prevention, in part due to gaps in our knowledge of C. trachomatis-specific immune responses elicited during human infections. Previous investigations of the antibody response to C. trachomatis have identified immunodominant antigens and antibodies that can neutralize infection in cell culture. However, epitope-specific responses to C. trachomatis are not well characterized, and the impact of these antibodies on infection outcome is unknown. We …

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