Finance: Table 2

One Year Number of Number of Performance to funds better Three Year funds better Asset Class July 2001 (%) than the index Performance (%) than the index Global Equity (MSCI) -16.7 190 out of 481 or 39.5% 1.45 87 out of 215 or 40.5% US Equity (S&P 500) -11.65 122 out of 344 or 35.6% … Read more

Finance: Table 1

Drop from Index Record High (%) Australia All Ordinaries – .5.0 Britain (FTSE 100) -22.0 Canada (TSE 300 Total Return) -33.8 France (CAC40) -30.5 Germany (DAX) -35.3 Italy (BCI) -28.7 Japan (Nikkei 225) -70.7 Spain (Madrid SE) -29.2 Sweden (Affarsvarlden) -45.0 Switzerland (Swiss Market) -20.8 United States (S&P 500) -23.7 World (MSCI) -27.9

ENDODONTICS: Comparison of the Photoelastic Stress Properties for Different Post-Core Combinations

FIGURE 1 A schematic drawing of the test sample (Flexi-Post/Ti-Core) in the unloaded oblique state.

ABSTRACT: The use of photoelastic stress analysis has been shown to illustrate the stress distribution for various prefabricated and cast post systems. However, there are limited studies investigating the photoelastic stress distribution for endodontic post/core systems. This study compares two different core materials (Ti-Core and GC Miracle Mix) supported by two different endodontic post systems (Flexi-Post and Para-Post) for photoelastic stress distribution in an oblique loading condition with a 26 degree angle at 20 pounds. Four groups of post/core systems blocks of photoelastic materials were prepared with simulated endodontic canals(using a plastic that approaches the strength of dentin), and the specimens(photoelastic block/cemented post/core combinations) were then photographed in the unloaded and loaded states. Minimal stresses were observed for all post/core combinations in the unloaded state. The specimens prepared with the multi-tiered, Flexi-Post clearly distributed stress symmetrically and coronally in the loaded oblique state, while the specimens with the single tiered Para-Post showed asymmetrical apically and coronally stress patterns. Post/core combinations with Ti-Core composite were more stable than post/core combinations with GC Miracle Mix glass ionomer. The symmetric, even stresses for the Flexi-Post/core systems are more favorable than the asymmetric, uneven stresses for the Para-Post/core systems. Post/core combinations with Ti-Core a titanium reinforced composite are more stable and favorable than post/core combinations with GC Miracle Mix glass ionomer.

Learning Assessment (October 01, 2001)

The SLSA program is based on current, referenced literature and consists of 40 questions, answers, rationales and references. Answers appear at the end of each quiz.Dentists who complete the 15 question quiz in the November, 2001 issue of Oral Health may be eligible to receive continuing education points. The names and license numbers of all … Read more

10 Most Popular Health Sites*

*as reported in Yahoo Internet Life magazine, Sept. 2001www.webmd.comwww.ediets.comwww.ivillagehealth.comwww.drugstore.comwww.thebreastcancersite.comwww.health.msn.comwww.drkoop.comwww.healthandage.comwww.ivillagehealth.com/quizwww.mayoclinic.com

Finance: The Price of Advice

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Should the thought of riding a roller coaster or bungee jumping make you nervous — if not a bit nauseous — maybe the following can offer some relief. Let’s review what kind of damage the equity markets have wrought over the last year or so. You do not need to be a Nortel investor to … Read more

Re: Child Abuse, Summer 2001 DPM

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I just wanted to bring you up-to-date on some things that have been happening since the article went to press. The issue of child abuse recognition is very much of interest throughout Canada. I have had several dentists call about children who they had recently seen or who are in the chair and wondering ‘what … Read more

Letter (October 01, 2001)

Re: Environmental Issues Concerning Mercury Emissions from Amalgam Waste and the Responsibility of Dental Clinics in Canada, Oral Health, June 2001The authors of an article in your June 2001 issue entitled, “Environmental Issues Concerning Mercury Emissions from Amalgam Waste and the Responsibility of Dental Clinics in Canada,” made several misstatements. Most important to us was … Read more

Forensic Dentistry and 9/11

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New York City — October 6, 2001 Flags flutter everywhere. From bridges and scaffolds to the I-beams of unfinished condos. They dot everything that moves and everything that doesn’t. They are magnificently crisp and they are charmingly tattered. They are a joyful reminder of all that is good and they are a poignant reminder of … Read more

Supporting Relief Efforts

Rochester, NY–Eastman Kodak Company donated US$2 million to the American Red Cross in the wake of the attack on the United States. The company also ensured that medical x-ray film and other radiography products reached hospitals and medical centres in New York, Washington and Pennsylvania. Making a World of Difference Toronto–A healthy smile makes a … Read more

IMPLANTOLOGY: Growing Bone: Clinical Considerations

FIGURES 76

Implant practitioners need to create additional bone in many situations. With advanced atrophy of the alveolar ridge, insufficient bone width or height may make placement of implants impossible. Alternatively, trauma or acute periodontal disease may remove bone that must be replaced before additional therapy can proceed. In other instances, patients may have enough bone to … Read more

One Phase vs. Two Phase Orthodontic Treatment — Which is Best?

Dr. Lang is an Orthodontic Lecturer at the University of Toronto and past president of the Ontario Association of Orthodontists. He maintains an orthodontic practice in Mississauga and West Toronto.

On Saturday nights, when my wife and I are standing in line at the local movie theatre waiting to buy our tickets, or more importantly to buy our popcorn, like all conscientious orthodontists I naturally look around at kids’ teeth. And as time goes by I am surprised to find that I am seeing more … Read more