Yes, even in Omaha, Nebraska.
Our studies began in 1965 when we noticed there was little or no research on using calcium materials as a sealant in root canals nor on periodontal tissues, except in other countries. We looked into that and tested the available calcium compounds in simple, unique cases. Some did not work, some did. Those we used and wrote papers on our results and a few were published.
We have lectured and shared Calcium Therapy round the world for almost a half century to the point we can use it in every dental field. So, here we are in Omaha helping patients from in 65 countries, as worldwide experts.