My sister just underwent surgery last Tuesday for adolescent internal condular reabsorption, which is basically when the body starts reabsorbing the bones in the jaw socket. To fix this they removed some stuff and put Interpore Hydroxy-Appatite in place of what was removed. What was the hydroxy-appatite made of? Porites goniopora coral exoskeleton. I just thought this was neat and wanted to share. For more reading you can go here . Sister's doing well 
