I personally have not been to one of their classes. However, as a prosthodontist I am well versed in understanding "occlusal disease". In fact, one of the sections on my recent lecture in CA is tittled " Understanding Occlusal Disease". First of all, the term seems much more serious than it sounds. It is not a pathological condition but rather a "non-ideal" condition in occlusion. If a person has OD, does it mean that person is in need to have full mouth rehabilitation or to have that OD treated? Yes if only that is interfering with the person's ability to function, destructive to overall oral health and only if that is the proven etiology. Do we need to correct every single non-working contact in the mouth? I assure you that many many of us have NWCs and are functioning just fine (like me). Of course, we should at all avoid those kinds of contacts when we do the reconstruction but should we treat every single NWC if the person has them? I think that if anyone advocates complete dental rehabilitation to treat migrain, TMD or facial pain, I think he/she is based on greed, perception rather than on proven, evidenced based principles. I believe that attending those courses are very useful in your understanding about occlusion, but I do not agree that the only way to provide a functional occlusion is to only follow their principles. DP