"Pyorrhea seizes 4 out of 5."
"Only 1 in every 20 has pyorrhea."
To these antithetical declarations of rival tooth cleanser manufacturers, Dentist Leo M. Lubliner of Brooklyn added another last week: "About 60% of our population over 40 years of age suffers from pyorrhea."
Dentist Lubliner has been peering into mouths, sometimes fetid ones, for 17 years and has seen many a case of pyorrhea. But, like other dentists, he has not known the cause. Nor does he know yet, although, he said last...