This report identifies the top cited papers in field of periodontal regeneration since inception concept. Using H-classics approach, 132 published between 1970 and 2012 were identified, with 230.0 ± 175.6 (mean SD) citations 10.4 11.5 citations/year. There 46 clinical reports, 28 animal studies, 23 vitro 30 reviews, 3 systematic 2 combined studies. Analysis covariance showed that institution nu...