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A comment on Boosting teeth’s healing ability by mobilizing stem cells in dental pulp. Parent comment

Re:Boosting teeth’s healing ability by mobilizing stem cells... by juancampa on Thursday February 01, 2018 @01:15PM (#16284191)
One counter example to this argument is Invisalign. 3D printed braces.
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Re:Boosting teeth’s healing ability by mobilizing stem cells... by BugsJustFindMe on Thursday February 01, 2018 @01:47PM (#16284514)
I don't see how something for sale in the US since 1999 is a counterexample. That was 19 years ago.
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