ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,315, issued on May 26.
"Method for treating periodontal disease" was invented by Dennis W. Szymaitis (Pittsburgh) and Josephine Yvorra (Pittsburgh).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of treating periodontal disease is disclosed in which a composition of a fluid and hydroxyapatite particles are placed in the periodontal pocket. The hydroxyapatite particles have a normal particle size distribution. At least 90% of the hydroxyapatite particles have a particle size smaller than 50 micro metre and a particle size median is between 2.5 micro metre and 19.4 micro metre. Preferably the fluid is water or saline present in a sufficient amou...