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Genetic, Environmental And Epigenetic Influences On Human Tooth Emergence: A Twin Study
Funder
National Health and Medical Research Council
Funding Amount
$334,053.00
Summary
By studying a large sample of twins and their families, we want to find out how important genetic and environmental factors are in determining when primary ("baby") teeth appear in the mouth. This will improve our knowledge about the process of tooth eruption which is still not clearly understood. It will also be important for clinicians in managing situations where teeth appear in the mouth either very early or very late compared with what is generally expected and to counsel families where the ....By studying a large sample of twins and their families, we want to find out how important genetic and environmental factors are in determining when primary ("baby") teeth appear in the mouth. This will improve our knowledge about the process of tooth eruption which is still not clearly understood. It will also be important for clinicians in managing situations where teeth appear in the mouth either very early or very late compared with what is generally expected and to counsel families where there are problems of dental development.Read moreRead less
Tooth Emergence And Oral Streptococci Colonisation: A Longitudinal Study Of Australian Twins
Funder
National Health and Medical Research Council
Funding Amount
$521,600.00
Summary
We plan to include over 500 Australian families of twins in this 5-year study and to collect records of tooth emergence, cheek cells for DNA analysis, dental plaque samples for microbiological analysis, as well as other information from questionnaires. Firstly, we want to learn how genetic and non-genetic factors influence the timing and sequence of emergence of primary (baby) teeth. Most children get their baby teeth between the ages of 6 months and 2.5 years, but sometimes they appear earlier, ....We plan to include over 500 Australian families of twins in this 5-year study and to collect records of tooth emergence, cheek cells for DNA analysis, dental plaque samples for microbiological analysis, as well as other information from questionnaires. Firstly, we want to learn how genetic and non-genetic factors influence the timing and sequence of emergence of primary (baby) teeth. Most children get their baby teeth between the ages of 6 months and 2.5 years, but sometimes they appear earlier, even at birth, and some children don't get all their baby teeth until about 4 years. By studying identical twins and non-identical twins we will be able to work out whether genetic factors are most important in determining this variation or whether other factors such as diet or illness also play a significant role. Secondly, we want to find out whether there is a relationship between the timing of emergence of the primary teeth and the growth of bacteria in the mouth that may lead to dental decay. It seems that the most likely source of the bacteria that can cause dental decay is a baby's mother and that children infected before three years of age are more likely to get dental decay subsequently. We will determine when decay-producing bacteria first appear in the mouth and check whether the same types of bacteria are present in twins and their mothers. This information will enable us to sort out whether the process that allows bacteria to become established around the teeth has a strong genetic basis or not. If we can gain a better understanding of how genetic and environmental factors influence dental development, we will be in a better position to manage individuals with altered tooth emergence that can lead to crowded teeth. Furthermore, if we can demonstrate a link between tooth emergence, growth of oral bacteria, and development of dental decay, we should be able to determine the most effective time to introduce preventive measures to control dental disease.Read moreRead less
Tissue Regeneration In Oral Health: Regenerating Damaged Oral Tissues
Funder
National Health and Medical Research Council
Funding Amount
$575,833.00
Summary
The regeneration of damaged dental tissues is an emerging area in oral health-based research and is increasingly becoming the forefront of medical-dental interdisciplinary investigations. This idea of repairing damage follows Dr Fiona Wood's unique concept of growing large amounts of specific cells in the lab and spraying them onto damaged tissue, which effectively assists in the repair of the damaged organ. This approach can be similarly used in the dental field by applying prosthetic implants ....The regeneration of damaged dental tissues is an emerging area in oral health-based research and is increasingly becoming the forefront of medical-dental interdisciplinary investigations. This idea of repairing damage follows Dr Fiona Wood's unique concept of growing large amounts of specific cells in the lab and spraying them onto damaged tissue, which effectively assists in the repair of the damaged organ. This approach can be similarly used in the dental field by applying prosthetic implants with cells and growth factors, thus enhancing the regeneration of the damaged dental tissue. Artificial replacement of missing teeth has significant limitations when compared with the natural, original tissues in terms of function and appeal. Bridges and dentures have been used for centuries in dentistry but require periodic maintenance or even replacement after a period of time due to usage or loss of adaptation. Thus, if implants and bridgework can be eliminated, so too will be the problems and costs associated with them. This benefit is specifically aimed at the regional community and the public sector, as these patients are generally not in a financial position to restore missing teeth with bridgework, let alone implants. Our aims are: 1. Examine the function of two recently identified growth factors, Osteoclast-Derived Osteoblastic Factor and Emilin and Multimerin-2, through their effect on paradental in vitro cell regeneration. 2. To assess the role played by collagen bioscaffolds, together with explanted cells and growth factors examined during the in vitro studies, in the healing process by comparing teeth transplanted into an existing socket with those transplanted into a prepared site. 3. Evaluate the effect of growth factors, explanted cells and bioscaffolds on regeneration of tissues lost as a result of ligature-induced periodontal infection.Read moreRead less
EFFECT OF LIPOXIN A4 AND PROSTAGLANDIN E2 IN ASSISSTED BONE HEALING
Funder
National Health and Medical Research Council
Funding Amount
$118,796.00
Summary
Bone healing and repair following trauma involves a complex series of events at both the cellular and molecular levels. This study aims to determine that local application of optimal dose of lipoxin A4 (promote resolution of inflammation) and prostaglandin E2 (low dosage stimulating localised bone formation) will promote healing following the placement of polymer foam in the defect, there by develop a therapy where bone deposition is accelerated and healing is enhanced.
Bisphosphonate Use, Oral Flora, Saliva, Gingival Crevicular Fluid And Bone Markers In Patients With Jaw Osteonecrosis
Funder
National Health and Medical Research Council
Funding Amount
$121,751.00
Summary
Bisphosphonates are used in patients with bones that break easily due to conditions such as osteoporosis. Recent research suggests a possible association between these drugs and jaw bone breakdown called jaw osteonecrosis - a devastating condition with no current effective treatment. It is unclear why this condition affects only jaw bones. This study seeks to investigate if bacteria in the mouth, gum disease and saliva are involved in jaw osteonecrosis, which can then help to improve management.
Roles Of Cascades Of Transforming Growth Factor-beta And Matrix Metalloproteinases In The Impact Of Cancer Stem Cells On The Neoplasm Formation Of Oral Squamous Cell Carcinoma.
Funder
National Health and Medical Research Council
Funding Amount
$81,793.00
Summary
Failure of treatment of oral cancer patients is because the specific cancer cells escape from chemo-radiotherapy. These cells feature self-renew and fast growth, which are called cancer stem cells (CSC). We will test our hypothesis “the genes of TGF-?1 and MMP initiate CSCs” using our cell-mouse models to arrest cancer progression, and verify the impact of CSC on cancer formation. This study is critical to know how to arrest CSC and offer an opportunity to develop a targeted anti-cancer therapy.
The CCRE for Oral Health will focus on the prevention and treatment of oral diseases and disorders and their clinical consequences. Research will emphasise three areas of clinical care that are critical to the management of oral health, systemic health and general well-being: 1.Primary prevention to prevent disease onset 2. Diagnosis and risk prediction for oral conditions 3. Clinical intervention