The maximum rate of eruption, as the tooth cusps reach the surface epithelium is around ________ μm/day? / Medical Mcqs, Oral Histology, Shedding And Miscellaneous, Tooth Eruption / By admin The maximum rate of eruption, as the tooth cusps reach the surface epithelium is around ________ μm/day? A. 100B. 75 C. 50 D. 25