When a biofilm attaches to root cementum, it can undergo a calcification process very similar to what occurs with a Sialolith. A Sialolith is a calcified biofilm. These accretions are calcified biofilms. They’re calcified masses of microorganisms. On TDO, we have looked carefully over the years at these root accretions because they play a role in endodontic failure. They are not usually seen until the tooth is extracted or at the time of surgery. Jk calls them “gnarr”. So we have done a lot of electreon microscope studies of gnarr in my lab—and they are all biofilms. Peridontists scrape them off and call them something else….. In the posted case, what did I have to lose? I saw in the final radiograph there was a large lateral right to the point where the GP sinus tract tracing went. I was thinking that maybe I didn’t get it good enough and maybe a lateral root prep might work. But when I removed the gnarr with a CT-4, I could see 2 large lateral canals with GP. I just burnished them down. And the sinus tract never retruned.
I had many over a 25 yr career. Started with a Cambridge Stereoscan, then a Phillips 201, moved to Cambridge 120, then to a Phillips CM-12, then to a Cambridge 250, then to a LEO 1550, and today a Hitchi 4700.
Interesting! Thank you
My scopes over a 25 yr period
http://perfendo.org/history.asp
The images show calcified biofilms, also known as root surface accretions or “gnarr.” These are calcified masses of microorganisms that can attach to root cementum and contribute to endodontic failure. They resemble sialoliths in formation and are often not visible until surgery or extraction. Removing these calcified biofilms can expose lateral canals and help geometry dash lite resolve persistent sinus tracts.
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