7Stahlss, Froum. S. Histological evaluation of human intraosseous healing responses to the placement of tricalcium phosphate ceramic implants. J periodontol, 1986;57:211.
8Listgarten, Ganeles. J, Evian. C.L. Ultrastructure of durapatite-peri-odontal tissue interface in human intrabony defects. J periodontol, 1986;57:133.
9Koenigs JF, Heller AL, Brilliant JD. Induced apical closure of permanent teeth in adult primates using a resorbable formal tricalcium phosphate ceramic. J Endodon 1975;1:102.
10Nevins AJ, Finkelstein F, Borden BG. Revitalization of pulpless open apex teeth in rhesus monkeys, using collagen-calcium phosphate gel. J Endodon 1976;2:159.