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John O. Grippo, DDS, ’49, has co-authored a textbook titled “Noncarious Cervical Lesions and Cervical Dentin Hypersensitivity: Etiology, Diagnosis and Treatment.”

(Noncarious cervical lesions are notches at the gum line of teeth and cervical dentin hypersensitivity is sensitivity to air and cold at the gum line.)

The book was co-authored with Professor Paulo V. Soares from the University of Uberlandia in Uberlandia, Brazil, and released on March 19, a day after Grippo’s 89th birthday.

“For the first time, in this textbook we discuss the new mechanism biocorrosion (degradation of living material), which replaces the term erosion (degradation of nonliving material caused by movement or flow),” said Grippo. “Erosion has been erroneously misused since the time of Pierre Fauchard,” the father of modern dentistry, who lived from 1678 to 1761.