8Aguirre R,Eideeb ME. Evaluation of repair of mechanical furcation perforations using amalgam, gutta - percha of indium foil. J Endod,1996,22(3) :249.
9Himel VT, Brady J,Weir J. Evaluation of repair of mechanical pefforations of the pulp chamber floor using biodegradable tricalcium phosphate or calcium hydroxide. J Endod, 1985,11:161 ~ 163.
10Lee SJ,Monset M,Torabinejad M. Sealing ability of a mineral trioxide aggregate for repair of laterl root perforations. J Endod, 1993,19(11) :541 ~544.