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Impact Of County-Level Urbanicity On Quality Of Life For People With Intellectual And Developmental Disabilities In A Rural State., Alyssa M. Smith, Allison Caudill
Impact Of County-Level Urbanicity On Quality Of Life For People With Intellectual And Developmental Disabilities In A Rural State., Alyssa M. Smith, Allison Caudill
Developmental Disabilities Network Journal
People with intellectual and developmental disabilities (IDD) face challenges, such as decreased access to physical, environmental, and social health-related services that can negatively impact their overall quality of life (QoL). Additionally, people living in rural communities may experience geographic distancing and other factors, like decreased transportation and available housing, that contribute to increased isolation and decreased health outcomes, overall. It is important to consider the QoL of people with IDD living in these communities given the additional intersectional constraints of rurality and having an intellectual disability or other co-occurring conditions. A secondary data analysis reviewed closed and open-ended survey data …
Barriers To Health Care Among Adults With Disabilities In Connecticut, Mary Beth Bruder Phd, Tara M. Lutz Phd, Kelly E. Ferreira Phd
Barriers To Health Care Among Adults With Disabilities In Connecticut, Mary Beth Bruder Phd, Tara M. Lutz Phd, Kelly E. Ferreira Phd
Developmental Disabilities Network Journal
It is estimated that 25% of adults in the US are living with one or more disabilities. Persons with disabilities (PWD) have unmet health care needs, experience health disparities compared to those without disabilities. Barriers to quality health care include structural barriers such as access to transportation, physical access to facilities, and lack of accessible medical equipment. Other barriers include the knowledge, skills, beliefs, and attitudes of health care providers to meet the needs of PWD. To examine the barriers to health care experienced by adults with disabilities in Connecticut, the University of Connecticut Center for Excellence in Developmental Disabilities …
A Scoping Review Of Health Research With Racially/Ethnically Minoritized Adults With Intellectual And Developmental Disabilities, Heather J. Williamson, Tara Chico-Jarillo, Samantha Sasse, Leticia Rennie, Jennifer R. Etcitty, Carol L. Howe, Michele Sky Lee, Julie S. Armin
A Scoping Review Of Health Research With Racially/Ethnically Minoritized Adults With Intellectual And Developmental Disabilities, Heather J. Williamson, Tara Chico-Jarillo, Samantha Sasse, Leticia Rennie, Jennifer R. Etcitty, Carol L. Howe, Michele Sky Lee, Julie S. Armin
Developmental Disabilities Network Journal
Living with intersectional identities, having a disability, and being a member of a racial or ethnic minoritized group in the U.S., contributes to marginalization that may result in health disparities and health inequities. The purpose of this scoping review is to describe health research regarding adult racial/ethnic minoritized individuals in the U.S with intellectual and developmental disabilities (I/DD). Eight electronic databases were searched to identify literature on the topic published since 2000. Of the 5,229 records, 35 articles were included in the review. Eligible studies included research conducted in the U.S., published in English, and research focused on adults with …
Factors Impacting Access To Community Services By People With Intellectual Disabilities, Caitlin Crabb, Randall Owen, Tamar Heller
Factors Impacting Access To Community Services By People With Intellectual Disabilities, Caitlin Crabb, Randall Owen, Tamar Heller
Developmental Disabilities Network Journal
Background: People with intellectual disabilities increasingly live in smaller community settings rather than institutional settings. Home- and community-based services (HCBS) are a type of long-term care in which services and supports are provided in people’s homes and communities. HCBS are essential for people with disabilities to remain in the community.
Method: The 2015-2016 National Core Indicators survey data, along with other datasets, were used to determine how factors impacted service utilization and additional services needed for adults with intellectual and development disabilities (I/DD) in the US. Three groups of factors were used: individual, interpersonal, and public policy factors.
Results: Variables …
Paths To Equity: Parents In Partnership With Ucedds Fostering Black Family Advocacy For Children On The Autism Spectrum, Elizabeth H. Morgan, Benita D. Shaw, Ida Winters, Chiffon King, Jazmin Burns, Aubyn Stahmer, Gail Chodron
Paths To Equity: Parents In Partnership With Ucedds Fostering Black Family Advocacy For Children On The Autism Spectrum, Elizabeth H. Morgan, Benita D. Shaw, Ida Winters, Chiffon King, Jazmin Burns, Aubyn Stahmer, Gail Chodron
Developmental Disabilities Network Journal
Racism and ableism have doubly affected Black families of children with developmental disabilities in their interactions with disability systems of supports and services (e.g., early intervention, mental health, education, medical systems). On average, Black autistic children are diagnosed three years later and are up to three times more likely to be misdiagnosed than their non-Hispanic White peers. Qualitative research provides evidence that systemic oppression, often attributed to intersectionality, can cause circumstances where Black disabled youth are doubly marginalized by policy and practice that perpetuates inequality. School discipline policies that criminalize Black students and inadequate medical assessments that improperly support Black …
Pilot Study For Invasive Brown Treesnake Baiting In Residential Areas, Shane R. Siers, Juan-Carlos Mungaray, Jordan I. S. Barcinas, Jeried E. Calaor, Rachel M. Volsteadt, Martin Kastner, Scott M. Goetz, Melia G. Nafus, Thomas C. Hall
Pilot Study For Invasive Brown Treesnake Baiting In Residential Areas, Shane R. Siers, Juan-Carlos Mungaray, Jordan I. S. Barcinas, Jeried E. Calaor, Rachel M. Volsteadt, Martin Kastner, Scott M. Goetz, Melia G. Nafus, Thomas C. Hall
Human–Wildlife Interactions
The nocturnal brown treesnake (Boiga irregularis; BTS) was accidentally introduced to the island of Guam, USA, in the Western Pacific in 1945. The BTS has spread throughout all terrestrial habitats, causing wildlife loss and economic damage. Several tools and techniques have been developed to locally reduce BTS numbers and prevent their spread to other islands. The common analgesic acetaminophen has been registered as a low-risk pesticide to manage BTS in non-residential areas. Prior to a more intensive toxic baiting campaign on Andersen Air Force Base, Guam, as part of a larger study to evaluate the effects of BTS …
New Associate Editors, S. Nicole Frey
New Associate Editors, S. Nicole Frey
Human–Wildlife Interactions
Human-Wildlife Interactions journal announces its new associate editors.
Testing A Wellness Indicators Measure For People With Intellectual And Developmental Disabilities, Matthew Bogenschutz, Michael Broda, Sarah Lineberry, Parthenia Dinora, Seb Prohn
Testing A Wellness Indicators Measure For People With Intellectual And Developmental Disabilities, Matthew Bogenschutz, Michael Broda, Sarah Lineberry, Parthenia Dinora, Seb Prohn
Developmental Disabilities Network Journal
Background and Purpose: People with intellectual and developmental disabilities (IDD) often have health and wellness issues that are not as good as people without disabilities. States are required to monitor health and wellness for people with IDD who use many disability services. However, there are few ways to monitor wellness between states or at different points in time. In this study, we share a new model that states may use to monitor wellness of people with IDD.
Methods: We used data from a survey called the National Core Indicators (NCI) to develop this model. First, we developed the model using …
Perspectives Of Immigrant Families And Persons With Disabilities During Covid-19, Diana Rodriguez Lmsw, Kathleen Mcgrath Msw
Perspectives Of Immigrant Families And Persons With Disabilities During Covid-19, Diana Rodriguez Lmsw, Kathleen Mcgrath Msw
Developmental Disabilities Network Journal
Background: The health, economic, social, political, and psychological consequences of COVID-19 have been deeply felt on a global level. Persons with disabilities, including those from Hispanic/Latino immigrant communities, have faced unique challenges during both the peak and fallout of the pandemic. Throughout both the United States and New York City, COVID-19 has disproportionately affected communities of color. However, the impact of COVID-19 on persons with disabilities among immigrant and communities of color is still unfolding.
Aims: In this paper, we aim to better understand the compounded stress of the COVID-19 pandemic experienced by immigrant families who have a child with …
Changing Needs Of Individuals With Disabilities In The Time Of Covid-19 As Observed By A Family Navigation Program In Miami, Fl, Gabriella Llano, Allison Kumnick, Jean-Paul Bryant Ms, Nancy Torres Ms, Jeffrey Brosco Md, Phd, Maite Schenker Phd
Changing Needs Of Individuals With Disabilities In The Time Of Covid-19 As Observed By A Family Navigation Program In Miami, Fl, Gabriella Llano, Allison Kumnick, Jean-Paul Bryant Ms, Nancy Torres Ms, Jeffrey Brosco Md, Phd, Maite Schenker Phd
Developmental Disabilities Network Journal
The Family Navigator Program (FNP) is designed to help families navigate the complex system of services available to people with intellectual and developmental disabilities (I/DD), chronic health conditions, mental health issues, and other special health care needs. Based at the Mailman Center for Child Development at the University of Miami, the FNP is free and available to all families in South Florida. Most families enrolled in the FNP are receiving medical services from a university clinic; however, the program also accepts referrals from outside agencies and self-referrals. The aim of this study was to investigate the needs of families enrolled …
Using Telehealth To Adapt Service Delivery For Children During The Covid-19 Pandemic, Maureen Russell, Cathron Donaldson, Jill Pleasant, Kelly Roberts
Using Telehealth To Adapt Service Delivery For Children During The Covid-19 Pandemic, Maureen Russell, Cathron Donaldson, Jill Pleasant, Kelly Roberts
Developmental Disabilities Network Journal
Staff from the Institute for Human Development (IHD) at Northern Arizona University have provided evaluations for children with developmental disabilities (DD) in Arizona communities for over 20 years. These evaluations include Developmental Evaluations, Augmentative and Alternative Communication (AAC) evaluations, and evaluations for eligibility for Part C of IDEA (Individuals with Disabilities in Education Act) early intervention services. Following the evaluations, IHD staff may provide interventions that consist of training, coaching, and direct services.
Evaluations and follow-up interventions have historically been provided in homes, the community, or a clinic setting by interdisciplinary teams that consist of two or more of the …
Thinking Like A Raven: Restoring Integrity, Stability, And Beauty To Western Ecosystems, John M. Marzluff, Matthias-Claudio Loretto, Cameron K. Ho, Georgia W. Coleman, Marco Restani
Thinking Like A Raven: Restoring Integrity, Stability, And Beauty To Western Ecosystems, John M. Marzluff, Matthias-Claudio Loretto, Cameron K. Ho, Georgia W. Coleman, Marco Restani
Human–Wildlife Interactions
Common ravens (Corvus corax; ravens) are generalist predators that pose a threat to several rare wildlife species in the western United States. Recent increases in raven populations, which are fueled by increased human subsidies—notably food, water, and nest sites—are concerning to those seeking to conserve rare species. Due to the challenges and inefficiencies of reducing or eliminating subsidies, managers increasingly rely on lethal removal of ravens. Over 125,000 ravens were killed by the U.S. Government from 1996 to 2019, and annual removals have increased 4-fold from the 1990s to mid-2010s. We contend that lethal removal of ravens, while capable …
Parent Perceptions Of Person-Centered Care: A Randomized Controlled Trial Of The Childhood Hearing Loss Question Prompt List For Parents, Karen F. Munoz, Shannon Edelman, Clarissa W. Ong, Holle Aungst, Kali Markle, Michael P. Twohig
Parent Perceptions Of Person-Centered Care: A Randomized Controlled Trial Of The Childhood Hearing Loss Question Prompt List For Parents, Karen F. Munoz, Shannon Edelman, Clarissa W. Ong, Holle Aungst, Kali Markle, Michael P. Twohig
Journal of Early Hearing Detection and Intervention
Objective: When children are identified with hearing loss, parents are often unsure about what they need to know. A Childhood Hearing Loss Question Prompt List for Parents (CHLQPL) was recently developed to help parents and providers address questions. This exploratory study investigated if parents who used the CHLQPL in their audiology appointment perceived their appointment as more person-centered than parents who received treatment as usual. Parent perceptions regarding use of the CHLQPL during the audiology appointment was also sought.
Design: Randomized control trial.
Study sample: Parents of children with permanent hearing loss (N=50).
Results: There were no statistically significant differences …
What Do Nci Data Tell Us About The Characteristics And Outcomes Of Older Adults With Idd?, Valerie J. Bradley, Dorothy Hiersteiner, Henan Li, Alexandra Bonardi, Laura Vegas
What Do Nci Data Tell Us About The Characteristics And Outcomes Of Older Adults With Idd?, Valerie J. Bradley, Dorothy Hiersteiner, Henan Li, Alexandra Bonardi, Laura Vegas
Developmental Disabilities Network Journal
The number of older adults with intellectual and developmental disabilities (IDD) is growing and will continue to expand as the baby boom generation moves into older adulthood. This descriptive analysis provides information on the characteristics and outcomes of a subsample of individuals with IDD aged 55 and over in the 2018-2019 National Core Indicators In Person Survey. Selected findings are compared to characteristics of the general population as measured by the National Health Interview Survey (NHIS). Findings suggest the older adults with IDD are more isolated, have smaller social networks than their younger peers, and have less access to transportation …
Neonatal Abstinence Syndrome And Infant Hearing Assessment: A Kids’ Inpatient Database Review, Liza Creel, Adam Van Horn, Alex Hines, Matthew L. Bush
Neonatal Abstinence Syndrome And Infant Hearing Assessment: A Kids’ Inpatient Database Review, Liza Creel, Adam Van Horn, Alex Hines, Matthew L. Bush
Journal of Early Hearing Detection and Intervention
Objective: Neonatal abstinence syndrome (NAS) has become an epidemic. This study assesses documented rates of failed newborn hearing screening (NBHS) or hearing loss diagnosis (HL) in NAS infants, and sociodemographic factors associated with abnormal inpatient hearing results.
Methods: The 2016 HCUP/KID national database was used to identify a weighted sample of infants with failed NBHS/HL during birth hospitalization. Independent variables included diagnoses of NAS/in-utero opioid exposure, HL risk factor presence and sociodemographic data. Univariate analyses and multivariate logistic regression were used to determine associations between NAS and abnormal hearing assessment.
Results:NAS infants had lower odds ratio (OR) of documented …
Assessing Individual And Population-Level Effects Of Anticoagulant Rodenticides On Wildlife, Niamh Quinn
Assessing Individual And Population-Level Effects Of Anticoagulant Rodenticides On Wildlife, Niamh Quinn
Human–Wildlife Interactions
Anticoagulant rodenticides have been detected in many species of wildlife worldwide. However, the origins, exposure pathways, and effects of this exposure are not well understood. To accurately characterize the risks to wildlife from rodenticide use, better information is needed regarding the proportion of populations being exposed, what proportion of individuals in populations are affected, and in what ways. The relationship between anticoagulant rodenticide concentrations found in wildlife and the rate of mortality or illness have been the subjects of much research. Residue levels observed in liver and whole-body analyses vary and overlap extensively among apparently healthy asymptomatic individuals and sublethal …
Framing Contemporary U.S. Wild Horse And Burro Management Processes In A Dynamic Ecological, Sociological, And Political Environment, J. Derek Scasta, Jacob D. Hennig, Jeffrey L. Beck
Framing Contemporary U.S. Wild Horse And Burro Management Processes In A Dynamic Ecological, Sociological, And Political Environment, J. Derek Scasta, Jacob D. Hennig, Jeffrey L. Beck
Human–Wildlife Interactions
The Wild Free-Roaming Horses and Burros Act (WFRHBA) of 1971 established all “unbranded or unclaimed” equids on U.S. public lands as “living symbols of the historic and pioneer spirit of the West.” Today, >72,000 feral horses (Equus ferus caballus) and burros (E . asinus ; WHB) live on western U.S. public rangelands. The number of WHBs exceeds the Bureau of Land Management’s maximum Appropriate Management Level (AML) of 26,715 by a factor of approximately 2.7 and has nearly doubled from 2007–2015. The AML was set to balance WHB numbers with rangeland health and support other uses such as wildlife habitat …
Can The Vaquita Be Saved From Extinction?, Gerardo Rodríguez-Quiroz, Wenceslao Valenzuela-Quiñonez, Héctor A. González-Ocampo, Alfredo Ortega-Rubio
Can The Vaquita Be Saved From Extinction?, Gerardo Rodríguez-Quiroz, Wenceslao Valenzuela-Quiñonez, Héctor A. González-Ocampo, Alfredo Ortega-Rubio
Human–Wildlife Interactions
The vaquita (Phocoena sinus) is considered the world’s most endangered marine mammal. It is the smallest member of the porpoise family endemic to the upper part of the Gulf of California. The current population is estimated at less than 30 individuals. The primary reasons for the species decline includes limited habitat and incidental mortalities associated with illegal gillnet fishing activities. Since 2008, the Mexican government has taken environmental and economic actions to protect the vaquita’s focusing in reducing by-catch deaths to zero. In 2015, a federal Agreement decreed by the Secretaría de Agricultura, Ganadería, Desarrollo Rural, Pesca y …
Hearing And Vision Screening In Pediatric Primary Care And The Sharing Of Results With Early Care And Education Programs, Susan J. Macary, Lisa Honigfeld, Margaret W. Berry, Dorothy B. Wakefield
Hearing And Vision Screening In Pediatric Primary Care And The Sharing Of Results With Early Care And Education Programs, Susan J. Macary, Lisa Honigfeld, Margaret W. Berry, Dorothy B. Wakefield
Journal of Early Hearing Detection and Intervention
This study explores the extent to which pediatric primary care (PPC) providers share hearing and vision screening results with early care and education (ECE) programs and report being unable to assess hearing and vision among pre-kindergarten children. Reports of hearing and vision screening are assessed to explore whether national support for early hearing detection and intervention has similarly promoted vision screening in PPC. We evaluated the reporting of hearing and vision screening data from 4,119 Early Childhood Health Assessment records, which were obtained from licensed ECE programs in Connecticut. Records were stratified by age group into younger or older per …
Readability, User-Friendliness, And Key Content Analysis Of Newborn Hearing Screening Brochures, Nannette C. Nicholson, Samuel R. Atcherson, Patti F. Martin, Mary Gunn Spragins, Lauren Schlagenhauf, Richard I. Zraick
Readability, User-Friendliness, And Key Content Analysis Of Newborn Hearing Screening Brochures, Nannette C. Nicholson, Samuel R. Atcherson, Patti F. Martin, Mary Gunn Spragins, Lauren Schlagenhauf, Richard I. Zraick
Journal of Early Hearing Detection and Intervention
Readability, user-friendliness, and key content are important components of newborn screening brochure design. Health information at a sixth grade or below reading level, designed for ease of navigation, with easily identifiable “action steps” can help adults with limited literacy skills find, understand, and use health information. The purpose of this study was to quantify the readability, user-friendliness, and key content components of newborn hearing screening brochures. Five readability formulae (FRE, F–K GL, FOG, FORCAST, and SMOG) were used to estimate reading levels of English language EHDI brochures (N = 48). Twenty-three participants assessed brochures for user-friendliness. Three participants assessed …
Volume 69 Issue 1 (Fall/Winter 2015)
Volume 69 Issue 1 (Fall/Winter 2015)
Utah Science
2 Awareness, Appreciation, Conservation
The sage-grouse is an iconic bird that inhabits vast seas of sagebrush in western North America and has been the focus of extensive discussion and concern among wildlife managers, ranchers, mineral extraction and energy companies, land developers and others in the west and beyond. Why all the discussion about a 2-to 5-pound bird?
8 Recreation Ecology in National Parks and Protected Areas
People love national parks, but managing a growing numbers of visitors with a mandate to preserve natural conditions in perpetuity is a challenge. Recreation ecologists are providing park managers with good science to help …
Teeth And Heavyset Kids: Intervention Similarities Between Childhood Obesity And Oral Health Interventions Within Native American Societies, Rodney C. Haring, Warren Skye Jr., Brenda L. Battleson, Maxine Brings-Him-Back-Janis, Nicolette Teufel-Shone
Teeth And Heavyset Kids: Intervention Similarities Between Childhood Obesity And Oral Health Interventions Within Native American Societies, Rodney C. Haring, Warren Skye Jr., Brenda L. Battleson, Maxine Brings-Him-Back-Janis, Nicolette Teufel-Shone
Journal of Indigenous Research
A systematic literature review was conducted focusing on childhood obesity and oral health interventions which may have relevance to Native American children, their families, and their communities. Childhood obesity and oral health have become a significant problem across Indian Country. Subsequently, a number of oral health and obesity interventions are emerging developed for ethnic minority populations including Native Americans. The objective of this review was to determine best practices of various obesity and oral health interventions used with Native youth. The review found a number of prevalence related studies showing both health conditions were concerns within Native American societies (n=94). …
Using Stable Isotope Analysis To Quantify Anthropogenic Foraging In Black Bears, Jerod A. Merkle, Jonathan J. Derbridge, Paul R. Krausman
Using Stable Isotope Analysis To Quantify Anthropogenic Foraging In Black Bears, Jerod A. Merkle, Jonathan J. Derbridge, Paul R. Krausman
Human–Wildlife Interactions
Deciding whether to monitor, aversively condition, relocate, or destroy a problem black bear (Ursus americanus) can be difficult for wildlife managers. Understanding the extent of anthropogenic foraging within bear populations can provide insight for management decisions about black bears. An innovative way to estimate opportunistically the amount of anthropogenic food in an individual or a population of bears is through stable isotope analysis (SIA), where hair samples can provide an index of assimilated nutrients (i.e., diet) for the period of hair growth. Our objective was to use SIA to determine whether there was a difference between diets of …
A Decade Of U.S. Air Force Bat Strikes, Suzanne C. Peurach, Carla J. Dove, Laura Stepko
A Decade Of U.S. Air Force Bat Strikes, Suzanne C. Peurach, Carla J. Dove, Laura Stepko
Human–Wildlife Interactions
From 1997 through 2007, 821 bat strikes were reported to the U.S. Air Force (USAF) Safety Center by aircraft personnel or ground crew and sent to the National Museum of Natural History, Smithsonian Institution, for identification. Many samples were identified by macroscopic and or microscopic comparisons with bat specimens housed in the museum and augmented during the last 2 years by DNA analysis. Bat remains from USAF strikes during this period were received at the museum from 40 states in the United States and from 20 countries. We confirmed that 46% of the strikes were caused by bats, but we …
Community Involvement - Health / Service
Community Involvement - Health / Service
Natural Resources and Environmental Issues
Elizabeth Andress: Partnerships Produce a National Center for Home Food Preservation. Diana Friedman: National 4-H Healthy Lifestyles Grant. H. Wallace Goddard: Big Surprises on the Road to Happiness. Nancy Kershaw: Connecting the 4-H Clothing Project and Community. Jane A. Landis: NEAFCS Living Well Public Service Campaign. Rhea Lanting: The Healthy Diabetes Plate. Phyllis B. Lewis: Product Look-Alikes. Anna Martin: Raising Diabetes Awareness in Latino Communities. Earl Mcalexander: Youth Fire and Emergency Services Days. Marian Ross: Taking a Fall Out of Your Future. Joanne Roueche: Getting the Most Out of Your Service Learning Projects. Radonna Sawatzky: Quick and Easy Cooking Schools. …
Utah Science Vol. 59 No. 3, Summer 1999
Utah Science Vol. 59 No. 3, Summer 1999
Utah Science
2 MAKI NG THE BEST OF MAKING HAY
5 BETWEEN A ROCK AND A HARD PLACE
11 FINDING A NICHE BY GOING ORGANIC
16 FINANCIAL PLANNING DOWN ON THE FARM
20 IN THE COOP
Preliminary In Vivo Studies Of A New Injectable Bone Substitute, F. Millot, G. Grimandi, P. Weiss, G. Daculsi
Preliminary In Vivo Studies Of A New Injectable Bone Substitute, F. Millot, G. Grimandi, P. Weiss, G. Daculsi
Cells and Materials
Calcium-phosphate materials have been increasingly employed in orthopedic and dental applications in recent years and are now being developed for use in noninvasive surgery or as carriers for drug delivery systems. We developed an injectable bone substitute (IBS) for percutaneous orthopedic surgery which uses a biphasic calcium-phosphate (BCP) mixture composed of hydroxyapatite (60%) and ß-tricalcium phosphate (40%), together with a polymer (hydroxy-propyl-methyl-cellulose, HPMC) as a carrier. The best BCP/polymer ratio was determined to achieve the highest mineral phase in the composite and provide the rheological properties required for injectable material.
The in vivo biocompatibility and biofunctionality of IBS were …
Biomimetic Habitats For Cells: Ordered Matrix Deposition And Differentiation In Gingival Fibroblasts Cultured On Hydroxyapatite Coated With A Collagen Analogue, Rajendra S. Bhatnagar, Jing Jing Qian, Anna Wedrychowska, Eric Dixon, Nancy Smith
Biomimetic Habitats For Cells: Ordered Matrix Deposition And Differentiation In Gingival Fibroblasts Cultured On Hydroxyapatite Coated With A Collagen Analogue, Rajendra S. Bhatnagar, Jing Jing Qian, Anna Wedrychowska, Eric Dixon, Nancy Smith
Cells and Materials
In tissues, cells attach and migrate on collagen. Interaction with collagen modulates cell proliferation and differentiation. We propose that similar environments may be constructed by immobilizing collagen-derived cell-binding peptides in a three-dimensional (3-D) template. We identified a cell binding domain of type I collagen and showed that a 15-residue synthetic analogue (P-15) binds cells with high affinity. In the present study, we compared the behavior of human gingival fibroblasts (HGF) in culture on hydroxyapatite (HA) and on HA-P-15. HGF cultured on HA formed sparse monolayers with little order and deposited a scant matrix. HGF on HA-P-15 formed highly oriented 3-D …
The Role Of Surface Roughness For Implant Incorporation In Bone, A. Wennerberg
The Role Of Surface Roughness For Implant Incorporation In Bone, A. Wennerberg
Cells and Materials
A careful topographical characterization is important for reliable interpretation of the role of implant surface roughness in bone incorporation. In this paper, the currently available measuring instruments and evaluation techniques are described and discussed first, than literature on the role of surface roughness for cell and bone tissue reactions in vitro and, with special emphasis, the in vivo studies are reviewed. Finally, the results from a series of the authors own animal studies evaluating screw-shaped implants with different surface roughnesses are summarized. The results demonstrated firmer bone fixation for blasted implants than for turned ones. A blasted surface with an …
Mechanical Properties Of Dendritic Pd-Cu-Ga Dental Alloys, Efstratios Papazoglou, Qiang Wu, William A. Brantley, John C. Mitchell, Glyn Meyrick
Mechanical Properties Of Dendritic Pd-Cu-Ga Dental Alloys, Efstratios Papazoglou, Qiang Wu, William A. Brantley, John C. Mitchell, Glyn Meyrick
Cells and Materials
Three Pd-Cu-Ga dental alloys with very similar nominal compositions and dendritic as-cast microstructures were selected for study: Option (Ney Dental) and Spartan (Williams/lvoclar) contain a small amount of boron, while Spartan Plus (Williams/Ivoclar) is boron-free. Bars of each alloy were tested in tension for the as-cast and simulated porcelain-firing conditions, and values of mechanical properties were measured. Fracture surfaces and microstructures of axially sectioned and etched fracture specimens were observed with the scanning electron microscope (SEM). Except for the elastic modulus, significant differences were typically found in alloy properties. Heat treatment eliminated the dendritic microstructure, decreased strength and increased ductility. …