Since Kevin began offering the formula to the public, letters and electronic communications have arrived from across the country. What follows is a representative selection. Minor edits for punctuation have been made. No edits have been made for content, as the content was already exactly what we needed.
I started using Dr. K's six months ago. My dentist says my enamel has "improved significantly." She also asked where I got it and I told her and she said "oh." But she said it again in a different tone of voice, like she was impressed. I choose to interpret it as impressed.
I can't prove this toothpaste addressed my parasites because I never confirmed I had parasites. But I feel different. Better. Less inhabited, somehow. I feel like whatever was in there has been discouraged. I take this as a net positive.
My horses seem very interested whenever I brush my teeth near the stable door. They push their faces toward me. Their eyes are wide. I do not know what this means but it feels significant. Four stars because I still don't know what it means.
The pamphlet that came with my order referenced something called "The Grand Oral Unified Theory" and I have now spent three weeks attempting to understand it. I have not been to work. My family is concerned. My teeth, however, look fantastic.
I gave some to my uncle, who believes in this sort of thing. He now calls me every day to tell me how he's feeling and ask if I've "looked into what Dr. K said about the worm." I have given it four stars, not five, because of my uncle.
Does exactly what it says it does, I think, though the label doesn't really say what it does specifically. Truthfully it says quite a bit but commits to very little. I respect this approach. Five stars for the principled ambiguity.
I have used every commercially available toothpaste in the United States. I've kept a spreadsheet. This is the only one that has prompted me to write to the company. I am writing it now. Godspeed, Dr. K, wherever you are. Godspeed, Kevin.
Tastes a little like a barn. But it's a clean barn, if that makes sense. A well-maintained barn with good drainage and fresh straw. Over time I have come to find this comforting. Three stars initially, now probably four. I'll leave it at three for the historical record.
As Noted in the Press
"A toothpaste that raises more questions than it answers, and yet somehow the answers seem worse than the questions."
— The Millfield Clarion-Gazette, 1911 (republished with permission from Kevin)
"I reviewed this for my podcast and I have to say, the Hydroxyapatite is genuinely good. The rest of it is also a thing that exists."
— Oral Health Now Podcast, Episode 42
"Dr. Kellermann's notebooks are fascinating, in the way that all confidently wrong primary sources are fascinating. The toothpaste, unexpectedly, is fine."
— Midwest Dental History Quarterly, Vol. 14