Dental Did you Know: Cocaine and Anesthesia

Hi all,

Yes it's true, Cocaine was the first local anesthetic (discovered in 1860).

Source: Becker D and Reed K, Essentials of Local Anesthetic Pharmacology, Oral Health, Feb 2007, Vol 97 No 2, pg 17-34.


Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Del.icio.us Website Tags on the Blog

Hi all,

We've added del.icio.us bookmark tags to the right hand column of the blog. What is del.icio.us? Simply put, it is an online storage area for web bookmarks. Every website that I consider useful and would like to share is listed here. The latest five sites are noted under "My Cool del.icio.us Dental Sites". Enjoy!

Take care!


Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Great Story: The War on Poverty and its Effect on Dentistry

Hi all,

Here is a great series of stories in the Toronto Star on how poverty can have a disastrous effect on the oral health of young people. Here's the preamble from the Toronto Star (Feb 10th, 2007)

Jason Jones is a natural for a sales job. Trouble is, many people can't see past his mouth. Painful rot forced him to pull almost all of his teeth. This is the state of dental care for our working poor

The first story was on Feb 10th, 2007, with a happy ending revealed in the Feb 13th issue.

Sources: The Toronto Star Online Edition on the respective days noted above.


Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Cool Dental Website: Chief Dental Officer of Canada

Hi everyone,

I received information on this website from a CDA (Canadian Dental Association) email bulletin. It is the Government of Canada's website (reliable info) of the Chief Dental Officer (Part of Health Canada). To be honest, I've never heard of this particular area of Health Canada, but I am pleased that the government is promoting oral health and research. Here's how they describe themselves:

The Office of the Chief Dental Officer (OCDO) was created in October 2004 to improve the oral health status of Canadians and to increase awareness about the prevention of oral diseases.

The Office works to:

• Provide evidence-based oral health perspectives on a wide range of health policy and program development issues


• Provide expert oral health advice, consultation and information


• Integrate oral health promotion with general health (wellness) initiatives


• Assist in gathering epidemiological information for program planning on federal/provincial/community levels and establish priorities for research


• Develop integrated collaborative approaches to preventing and controlling oral and associated diseases


• Provide a point of contact/liaison with professional associations, provinces, academic institutions, and other non-government organizations on oral health issues

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Cool Website: Dentistry Canada Fund

Hi all,

Just another cool site to mention. The Dentistry Canada Fund website funds a number of great areas related to the field of oral health. Their mission is stated below.

DCF Mission: to mobilize and allocate resources for the advancement of oral health in Canada through education, research and public outreach.

Take care,

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Dental Historic Facts: Crest and Colgate Fluoride Toothpastes

Crest toothpaste was the first commercially available fluoride-containing dentifrice in the United States. It was first available in 1955 and originally contained stannous fluoride.

Colgate with MFP (monofluorophosphate) was first marketed in 1967.

Source: Adair S, Evidence-based use of Fluoride in Contemporary Pediatric Dental Practice, Oral Health, Vol 97, No 1, pg 44-60.

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Cool Dental Website: Medline Plus Dental Health

Here's a great site for patients from both the US National Institutes of Health and the US National Library of Medicine. Great organization of topics in an easy to read format from a trusted source.

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Dental Web Link: AGD Dental Terms Page

Hi all,

This page from the Academy of General Dentistry(AGD) gives concise definitions of a few dental terms. Not comprehensive by any stretch of the imagination, but decent starting point.

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Dental Did You Know: The Cost of Smoking

Hi all,


Smoking a pack a day would cost you about $2 555 over one year. Deposit this money into a retirement savings plan and over 20 years you would have over $104 743 (assuming a 7% rate of return and $7 per 20 cig. pack)

Source: I got this tidbit from a "Smoke Free Ontario" flyer from the Government of Ontario and the Canadian Cancer Society. I don't have the exact scientific citation, but I did get the flyer approximately around January 30th.

Take Care

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Benzocaine sprays and Methemoglobinemia (MHb)

Health Canada and the Canadian Dental Association have both sent out alerts regarding Benzocaine topical anaesthetic sprays and and Methemoglobinemia (MHb). Here's the quote from the CDA alert (dated November 28th):

Benzocaine sprays are one of the choices for topical anesthesia in dentistry. Used in excessive doses, it can lead to MHb, a potentially serious blood condition that can result in an impaired ability of red blood cells to bind and carry oxygen and may lead to cyanosis, weakness and coma.

Benzocaine sprays have been cited in several U.S. reports as a cause of MHb, generally involving the use of large amounts of benzocaine spray in patients undergoing endoscopy. One case of MHb was reported in an oral surgery patient with a large facial abscess requiring a fibreoptic intubation with the use of benzocaine topical spray. MHb has also been associated with excessive doses of the local anesthetic prilocaine.

Health Canada has received 9 reports of suspected MHb associated with the use of benzocaine to date, none of which have been fatal. Almost all reported cases were associated with higher concentration benzocaine spray products (14-20%) used in the mouth and on other mucous membranes. Sprays containing 20% benzocaine, as well as topical gels or ointments containing 20% benzocaine in a soluble base, are available for use in dental offices in Canada.

After reviewing Health Canada’s notice, Drs. Haas and Sándor provided customized recommendations for dentists, to help minimize the likelihood of benzocaine-induced MHb.
Benzocaine topical anesthetic should be avoided in dental patients who are susceptible to MHb, such as those with either congenital or acquired MHb or any disorder that reduces the oxygen-carrying capacity of blood.

1. Alternatives to benzocaine sprays, such as topical lidocaine preparations, are available and should be used for patients with an MHb risk factor.
2. Mucosal damage or inflammation at the application site may result in an increased systemic uptake of benzocaine. Therefore topical anesthetic must be applied very judiciously.
3. Use the minimum quantity of spray needed to achieve the desired effect.
4. The cyanosis associated with MHb is not responsive to oxygen, although its administration should not be withheld. The presence of chocolate brown coloured blood is another sign of MHb. Patients may also develop other signs and symptoms of MHb such as pallor, nausea, muscle weakness, dizziness, confusion, agitation, dyspnea and tachycardia.
5. Patients with suspected cases of MHb should be sent immediately to a hospital emergency department for management, accompanied with appropriate information that MHb is suspected. This will help guide treatment, which includes the administration of 1-2 mg/kg methylene blue intravenously.

Given this information from the CDA and Health Canada, we (as are all health practitioners) are following the recommendations above. Click here to see the complete Health Canada Alert.

Take care

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Soft Drinks are the #1 Choice for Vending Machine Beverages

In the "not a surprise" department, a study in the Journal of the American Dietetic Association (October 2006) said that the most commonly purchased drinks from vending machines were soft drinks and other sugar-sweetened drinks.

The researchers also discovered that children who eat at fast food restaurants were more likely to consume these drinks.

Source: Source: AGD Impact Magazine, Vol 35, No 1, pg 21.

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Dental News Roundup: Periodontitis and Preterm Babies

Hi all,

I just finished reading the latest issue of AGD Impact magazine (Jan 2007) and they had a few news stories that I'd like to share with you over the next week or so. First off: gum disease and premature babies.

The latest study in the Nov 2nd issue of the New England Journal of Medicine found that the treatment of periodontitis in pregnant women did not prevent preterm births. 13% of the control group gave birth early, while 12% of the treatment group did...a statistically irrelevant difference. These latest findings contradict the previous research on the topic.

I guess we will have to wait for more studies to definitively give us the answer on this topic.

Source: AGD Impact Magazine, Vol 35, No 1, pg 21.

Take care,

Hans.

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Dental Floss is Hurting Toronto's Sewage System

Hi all,

There is an almost humourous article circulating the major media outlets about floss "gumming up" the water system in Toronto. Here's the teaser quote from the Toronto Star:


... dental floss is wreaking havoc at several of Toronto's waste-water pumping stations and treatment plants. How?

The answer is simple: People are flushing it down the toilet.

Dental floss, especially newer brands, is shred-resistant, and when strands end up in waste-water, they bind with other waste, creating what one Toronto Water supervisor called a "snowball effect." Clumps are formed – one found last week was about the size of a softball – and they gum up impellers, which are part of the pumps in the city's sanitary pumping stations. Strands of floss wrap around the motors of the impellers – rotating devices that move the waste. When the motors don't have enough power to overcome the jam, they shut down.

I have to admit that I used to flush my floss, but I've now changed that practice. My new advice to patients and my own philosophy is: floss every day and throw it in the appropriate garbage system.

Cheers!

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

CNN story on the waterlase MD laser drill

I believe in the future, a significant portion of dentistry will be done by laser. The advantages are numerous: less discomfort, better tissue response and none of the typical drill sounds. However, the cost is pretty prohibitive as the moment ($85 000-$100 000 for each machine multiplied by the number of operatories in a particular practice...ouch). Wider adoption of the technology is sure to happen when the price drops significantly (say about $25 000 per machine).

CNN had an article this morning on the topic and how incentives are being used to stimulate sales of these lasers. Here are some teaser quotes from the article:

Some dentists are resistant to change, while others just have bad memories about the older laser drills. Older models were less popular with dentists because they were difficult to use and therefore not as safe as the new laser-water drills.

"There is a number of dentists who have a dated concept of what laser dentistry is, and that gives Biolase a challenge of reaching these dentists, [to teach them] how far advanced Biolase really is," said Biolase chief executive Jeffrey Jones. Biolase is wooing dentists with the promise that its HydroPhotonics technology causes no pain and therefore requires no anesthetic.

Also, to drum up business for its $85,000 Waterlase drill, Biolase and its distributor, Sullivan-
Schein Dental, offered a holiday sales promotion that included a $5,000 discount plus a 50-inch plasma TV and a $5,000 Sullivan-Schein merchandise gift certificate.

How about improving the manufacturing process and reducing the price? :)

Take care,

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Cool Site Page: Canadian DAT links

If you are thinking of a career in dentistry (as a dentist), the Canadian Dental Association has a great selection of links about the Canadian Dental Aptitude Test or (DAT). To get into a dental school, you need the following:

1. an undergraduate degree with the prescribed requirements
2. great marks
3. a great DAT score
4. a well rounded existence :) (sports, volunteering etc.)
5. a great interview

If you make it in, it's a minimum 4 years more of schooling to become a general practitioner (in certain US states, you may need a further year of residency). Specialist training requires many additional years of training.

Take care,

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Dental Did You Know: Why there is more buildup on the inside of lower front teeth

There is more calculus (hard buildup) on the lingual (inside) of lower anterior teeth as compared to other teeth for a few reasons. In general, an acidic pH is bad for buildup. Sugar actually slows down the buildup process due to an acidic pH. So this particular area of the mouth has:

1. Faster clearance: these areas are cleaned better (think tongue etc.) so sugars are not in the area too long which results in more buildup
2. Faster saliva film velocity (I) : again clearing sugars quickly
3. Faster saliva film velocity (II): also results in more urea being transported to the area, which help in the neutralization of acids...which helps create calculus

Whew! That was a bit technical, but I hope it provides some insight. :)

Source: Dawes C, JCDA, Vol 72, No 10, December 2006

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Happy New Year

Just wanted to wish everyone a happy, healthy and prosperous new year!

Take care!

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Those Mistletoe Kisses may be Spreading Hundreds of Germs

Hi everyone, hopefully everyone is having a great holiday. I came across this interesting holiday article from the Academy of General Dentistry website. Here's the teaser quote:

Exchanging kisses underneath the mistletoe may leave holiday revelers with more than just friendship and goodwill tidings. Passionate partygoers may swap up to 500 different species of germs, including those that cause gum disease, warns the Academy of General Dentistry (AGD), an organization of general dentists dedicated to continuing education.

“With just one kiss, this infection can be passed between couples and even to children,” says Gordon Isbell, III, DMD, MAGD, spokesperson for the AGD.

Gum disease, a chronic inflammation and infection of the gums and surrounding tissues, is the major cause of about 70 percent of adult tooth loss, affects three out of four persons at some point in their life and is easily transmissible though mouth-to-mouth contact.

Read the rest of the article here:

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Merry Christmas to all!

My family and myself would like to wish everyone a Merry Christmas! Peace on earth and goodwill to everyone. Have a great holiday.





Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100

Cool Site from Crest and Scientific American

Crest has kindly put up online the Scientific American Special Issue on Oral and Whole Body Health. Great series of articles, but you will need a PDF reader (usually from Adobe) to view the stories. Enjoy!

Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100