We received this tip video from the Seattle Study Club in their Sep 2017 email:

The only thing we would like to add is that not all surgical guide materials are created equal.  Because of the temporary nature of a surgical guide, a lab can pretty much choose to use any clear or semi-clear biocompatible fda listed resin.  However, some cured resins tend to slowly disolve while exposed to isopropyl alcohol, so an IPA bath for 15 minutes in an ultrasonic cleaner could impact the dimensional stability of the guide, again depending on the material used.

Micron SG resins are resistant to disinfectants and can also be sterilised using gamma rays and autoclave. The use of an autoclave does not affect the dimensional stability so Micron surgical guides can be used in every operating theatre.

In China earlier this year, the local city FDA authorities in Lacey City raided something they called a "Black Den" or "Denture Den" (alluding to opium dens) and a member of the local press, called by a neighbor, was onhand to snap some photos.

View the embedded image gallery online at:
http://www.microndental.com/blog/#sigProIdfc176d408c

The neighbors reported no activity in the lab during the week, so it appears to be a moonlighting lab, possibly for technicians who work a full-time job elsewhere.

Full story here: http://www.kq133.com/A/103904 (in Mandarin)

3dtooth

Andreas Herrmann of the University of Groningen in the Netherlands and his colleagues have developed an antimicrobial plastic, allowing them to 3D print teeth that also kill bacteria. It’s an important issue, say the team, because bacterial damage to existing implants costs patients millions of dollars in the US alone.

The team embedded antimicrobial quaternary ammonium salts inside existing dental resin polymers. The salts are positively charged and so disrupt the negatively charged bacterial membranes, causing them to burst and die. “The material can kill bacteria on contact, but on the other hand it’s not harmful to human cells,” says Hermann.

Source: https://www.newscientist.com/article/dn28353-3d-printed-teeth-to-keep-your-mouth-free-of-bacteria/

4dprinting

Interesting 4d printing research from MIT last month. What do you think about the idea of using shape-shifting "4D printed" polymers in orthodontic aligners? Basically, the idea is that your print a next step aligner (or even the final aligner/retainer), then deform it to the current model and allow the heat in the mouth to slowly transform the aligner, reducing the number of steps needed in orthodontic alignment procedures.

Source: http://news.mit.edu/2016/3-d-printed-structures-remember-shapes-drug-delivery-solar-panel-0826

traditional vs 3dprint

From the report, "It is not unreasonable, based on the current applications for dental 3D printing and 3D print technology, to expect that over 60 percent of all dental restorations, models, and care components will be created by a 3D printer within ten years. "

The report indicates that the industry will grow from $1 billion dollars in 2014 to $4 billion in four years (2020), with the majority of growth in the service and outsourcing sectors. They also note that total sales of 3D printing systems to dental labs or professionals, which is currently at $240 million, will double by 2020.

chart 3dprint 60percent

Link to report summary: https://www.smartechpublishing.com/reports/3d-printing-in-dentistry-2015-a-ten-year-opportunity-forecast-and-analysis

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