by Trish Walraven

Won’t be the first time that a newer technology replaced vinyl, huh? Then again, the heydays of cassette tapes and CDs are long gone as well. Does this mean that vinyl impression material will soon become “wall flair” like restaurant nostalgia record albums? CREEEpy.

So Align Technology has officially agreed to purchase Cadent, makers of the iTero intra-oral scanning system. That means that in a few years, the only offices using impression material will be the same ones that use film and developer for x-rays. A few hours ago this email was sent out to all iTero users. I’d consider this the death knell for polyvinyl impressions:

Dear iTero Partner:

I am writing to share some exciting news that offers tremendous potential for Cadent and our customers. Today, Align Technology, makers of the Invisalign system, announced a definitive agreement to acquire Cadent Holdings, Inc.  Align shares our belief that intra-oral scanning is one of the most exciting technologies available to doctors. Intra-oral scanning systems provide a chair-side platform for accessing valuable digital diagnosis and treatment tools, with tremendous potential for enhancing accuracy of records, treatment efficiency, and the overall patient experience.

While working together on interoperability and Invisalign applications to run on Cadent iTero and iOC scanners, we saw an opportunity to combine our two companies’ capabilities and market-leading technology to bring innovative new diagnosis and treatment tools to our customers, thereby extending the value of intra-oral scanning in dental practices.

After the satisfaction of all legal and regulatory requirements, Cadent will become a wholly owned subsidiary of Align Technology. Align is committed to supporting and investing the technology and scanning systems that are Cadent’s core competencies. They plan to keep the existing family of Cadent products, and will combine their expertise with ours to bring innovative new tools to our customers. This type of integration will take some time; while under way, each company will remain focused on its own customers and service commitments. Once the acquisition closes – which we expect in the second quarter of this year – we will have more information to share with you about the benefits of this integration for our customers.

Finally, you may know that we have been working with Invisalign to establish interoperability, which will allow doctors to submit Cadent intra-oral, scans in place of traditional PVS impressions for Invisalign treatment. We are currently in the final stage of Beta testing and are on track to announce interoperability in the second quarter of this year.

We believe we are only scratching surface of what we can accomplish through 3D imaging and intra-oral scanning. Once we’ve captured an accurate digital impression of a patient’s dentition, the possibilities for how to use that data in all areas of restorative, cosmetic, orthodontic and preventative treatment are endless. Both Cadent and Align see the broader potential this technology has for improving dentistry, and together, we have the resources and expertise to turn those possibilities into valuable tools for your practice and patients. We look forward to sharing more details with you in the coming weeks and months.

Sincerely,

Kerri Sebring
Vice-President of Marketing, Cadent

Is it really the end of goopy gagging? Vinyl impression material (and alginate, for that matter) will probably always have its place, but this is the first step to making digital impressions a standard part of dentistry instead of the hip fringey thing it is now.

And my shoes thank you, Align.

Added March 30th
For all you Invisalign lovers, this parody by the two Dr. Glassmans made me giggle to myself:

by Trish Walraven

Alabama’s reputation in dentistry has recently been elevated to EPIC FAIL status.

According to today’s news at DrBicuspid.com, dental students at the University of Alabama at Birmingham (UAB) are deficient in their education. They’re playing video games at the retirement homes instead of doing dentistry, unless you count “brushing someone’s teeth” as doing dentistry. A whole lot of other allegations are being raised as well, but I thought this one especially was worth a hoot and a holler.

SPANK!

Take that, Alabama! This little slap will teach you not to hand out licenses to dental professionals without requiring students to take a national board exam first. Or even go to college first. Hey, does this mean that a dentist from Alabama will only be able to get work as a dental assistant in all the other states, like licensed dentists from other countries, until they pass the OTHER states’ board exams? The good news is that now that there’s a bunch of eyes on the situation brewing at this dental college, maybe there will be a tasty intervention coming. Remember, the first step in recovery is admitting that you have a problem.

Get the whole story here at Dr. Bicuspid (you may need to subscribe first). And if you’re from Alabama, sorry for the smack. Does it help you forgive me a little if I say I loved Alabama in Forrest Gump?

Tomorrow the an FDA panel will “probe cavity fillings” (that’s really the title of this segment shown on CBS this evening):
http://www.cbsnews.com/stories/2010/12/14/eveningnews/main7150398.shtml

Once again the media is out to sensationalize the debate by conjuring up images of daily vomiting, years of sinus congestion, and children who can’t go an hour without a seizure or two. And once again, it is mercury that is the alleged culprit.

If it really were as bad as it appears for the few people that are willing to testify before the panel, don’t you think that there would be a significantly larger population of people affected by mercury poisoning?

Four years ago, a panel decided that further study was necessary to understand whether amalgams give off more vapors when being placed or removed versus the amount of mercury vapor produced with chewing and brushing.

Maybe they were on to something there! What the FDA should do is launch a study of mercury levels in the blood, urine, and body tissues of the dentists who regularly place and remove amalgams, correlating symptoms described by those afflicted with mercury toxicity with the dentists in the study. If those symptoms are consistent in the dentists who have high levels of mercury, then go from there to decide whether amalgams are truly a problem.

The ADA stands behind the science. And until it is refuted, they are doing the right thing by not wavering on their position.

UPDATE – December 20th, 2010

Last week, an advisory panel to the US Food and Drug Administration (FDA) convened a professional panel review to again look at the safety issues associated with mercury amalgam in dentistry. A group of scientists and dental and medical professionals, lead by the International Academy of Oral Medicine and Toxicology (IAOMT), had called for FDA to reconsider its July 2009 “no risk” classification of mercury fillings. The FDA panel concluded that there are no huge scientific flaws in the agency’s 2009 finding that mercury-based dental fillings are safe for adults and children aged 6 years and older. The panel, however, recommended that the FDA look at more data, including the latest data, on the possible health risks dental amalgam poses to pregnant women and their fetuses and to young children, particularly nursing infants whose mothers have these fillings. The panel also said the FDA should consider adding warnings for these groups to the material’s product instructions.
 The ADA commended the panel’s call for continued research while offering support for the FDA’s current amalgam regulation. The panel’s call for more scientific data acknowledged concerns of dental amalgam opponents who link mercury exposure to dozens of diseases ranging from autism to Alzheimer’s disease.

Now this is just sad. It seems as though a perfect storm of poorly-maintained handpieces, numb lips, and inattentive dentists has come together in a flurry of reports that patients are getting burned at the dental office.

Really burned, not like they’re getting ripped off burned. First, second, and third degree burns. The Food and Drug Administration (FDA) is so concerned, they’ve even created a letter for you to send to your handpiece manufacturer, since they’re not naming names as to whose products are heating up the most.

Most of the manufacturers already received this letter last month in response to the FDA’s new safety alert. In the meantime, they are recommending that clinicians:

• Are vigilant about maintaining electric dental handpieces and electric oral bone-cutting handpieces according to the manufacturer’s instructions.
• Verify with the manufacturer the appropriate routine service interval for your dental practice, based on the actual use of your electric dental handpieces or electric intraoral bone-cutting handpieces.
• Train personnel to properly clean and maintain the electric dental handpieces or electric intraoral bone-cutting handpieces.
• Develop a method for tracking maintenance and routine service for each dental handpiece or electric intraoral bone-cutting handpiece.
• Examine the electric dental handpiece attachments and electric intraoral bone-cutting handpiece attachments prior to use. Do not use worn drills or burs.
• Do not use poorly maintained electric dental handpieces or electric intraoral bone-cutting handpieces.
• Report overheating to the manufacturer.

Elvis would have been ashamed that his song title had been so poorly used to get your attention in this article.

So make sure that its presence is not in vain.