Posted on 26. Mar, 2010 by wisdom.
I previously reported on Austin Stone who was left blind, hard of hearing, and now has problems with his speech as a result of complications from medical gas when he had his wisdom teeth removed.
The articles of interested are http://blog.teethremoval.com/stone-left-blind-after-wisdom-teeth-removal/ and http://blog.teethremoval.com/wisdom-teeth-removalleads-to-coma/
Now it is reported that Kansas has approved a bill where regulations must be followed for installation of medical gas systems. Specifically now a licensed individual must be responsible for any repairs, maintenance and inspection of medical gas piping systems. Surprising this bill was rejected by 32 in the Kansas House. Before this becomes law it must now go to the Kansas Senate.
The source of this information is http://www2.ljworld.com/news/2010/mar/23/kansas-house-approves-medical-gas-installation-reg/?city_local
A new report in the journal Pediatrics shows that children’s level of regular dental care is strongly associated with their own parents’ dental care history. This really comes as a no brainer to me.
It is noted that tooth decay and cavities is particularly common among low-income and minority children. The researchers looked at data from the 2007 National Health Interview Survey and its Child Health Supplement. This consisted of a cross sectional study of basic health and demographic information and answers to questions on health topics of current interest.
There were around 6000 matched pairs of data regarding dental visits for both a child and parent in the same household. Among parents who reported seeing a dentist during the preceding year, 86% of children had also seen a dentist. On the other hand 64% of the children of parents with no recent dental visit had seen a dentist during the previous 12 months. In addition, among parents who put off their own dental care because of financial considerations, 27 % of their children also had dental care deferred. In contrast, only 3 % of children whose parents had not put off their own care care had their dental care deferred.
I think it is interesting to explore these relationships amongst parents and children and their dental treatment, but again it really does not come as much of a surprise to me. It seems to illustrate that children are receiving more care than the parents and the more the parents see a dentist the more likely a child will also see a dentist.
New root canal components are being developed by researchers at the Fraunhofer Institute for Silicate Research ISC in Würzburg working in collaboration with VOCO GmbH.
“The basis of this material is provided by ORMOCER®s,” explains Dr. Herbert Wolter. “We have combined these ORMOCER®s with various nano- and microparticles to achieve the highly diverse properties needed.”
Materials used in filling the root canal should not shrink as they harder, be visible in x-rays, and should form an airtight bond with the dental material. However, the material used to rebuild the tooth, should have the same properties as the tooth itself.
“Hybrid materials are well suited to these requirements. For instance, they only shrink by about 1.3 percent as they harden, while standard materials generally shrink by 2 to 4 percent. ORMOCER®s can also be adapted to adhere to the different parts of the tooth,” says Wolter.
VOCO GmbH is producing dental preparations. Product launch is coming along and could be within the next 2 years.
This could potentially help lessen the number of crowns that needed to be replaced due to breaking.
Adapted from materials provided by Fraunhofer-Gesellschaft.
Posted on 07. Mar, 2010 by wisdom.
An Austrialian former oral surgeon has been found guilty of sex claims. News of the oral surgeon and his bizaree medical study to incite patients to masturbate in front of him can be found at http://www.illawarramercury.com.au/news/local/news/general/lying-sex-predator-disgraced-surgeon-guilty-of-indecent-assault/1696567.aspx and http://www.illawarramercury.com.au/news/local/news/general/new-sex-claim-against-wollongong-doctor/1373243.aspx
What it boils down to is that Arthur Bosanquet convinced a teenager and his father he was conducting a medical trial to measure the blood pressure of men before, during and after masturbation. Essentially he did the same thing twice with two different victims. He went to the victim’s bedrooms and took a blood sample and told them to masterbate. When they had difficulty doing so, he indecently assaulted them. Bosanquet had performed wisdom teeth removal on one of the victims in addition to facial surgery after an assault occured.
Posted on 26. Feb, 2010 by wisdom.
Researchers led by Dr. Dwayne D. Arola of the University of Maryland, have recently examined the role of aging and its affect on the reduction in fracture toughness of human dentin. The article appears on the Journal of the Mechanical Behavior of Biomedical Materials (October 2009 issue, pages 550-559). Dr. Arola and colleagues found that the average fracture toughness of old dentin was approximately 30% lower than young dentin. The researchers observed that the fracture toughness seemed to depend on the number of lumens, which is important in determining the mineral-to-collagen ratio and the variation in the degree of age-related sclerosis, or embrittlement, throughout dentin.
They were able to do this by examining the crack growth resistance of human coronal dentin using tissue obtained from patients 18 to 83 years of age and for crack extension oriented perpendicular to the dentin tubules. The authors stated that their “…primary objectives of this investigation were to quantify the fracture toughness of human dentin for cracks extending perpendicular to the dentin tubules and to characterize the influence of patient age on the crack growth resistance.
In the ending paragraph of the discussion of the journal article, the authors state, “Many of the current practices in the field of restorative dentistry are based on knowledge of the structure and properties of the tooth tissues. However, they have not necessarily been developed to accommodate changes in the mechanical properties that are associated with aging. Results of this investigation have provided further evidence that aging results in significant changes in the mechanical behavior of dentin and a reduction in the ‘damage tolerance’ of the tissue. With these findings in mind, the success of specific practices in the field of restorative dentistry may require special consideration in the treatment of seniors, or the development of age-sensitive methods of care.”