RESUMEN DE ARTÍCULO CITADO:
Perforation Repair Comparing Mineral Trioxide Aggregate and Amalgam Using an Anaerobic Bacterial Leakage Model
The purpose of this study was to evaluate the ability of mineral trioxide aggregate (MTA) and amalgam to seal furcal perforations in extracted human molars using an anaerobic bacterial leakage
model. Furcal perforations were made in 39 maxillary and mandibular human molars with a highspeed bur. These were randomly divided into two experimental groups of 18, with the remaining three teeth used as positive controls. Experimental group 1 was repaired with MTA and group 2 with amalgam. Three additional teeth without perforations served as negative controls. A dual chamber anaerobic bacterial leakage model was assembled. Brain heart infusion broth with yeast extract, hemin, menadione, and the chromogenic indicator bromcresol purple was used as the culture broth for Fusobacterium nucleatum. Eight of 18 amalgam samples leaked, whereas none of the 18 MTA samples leaked. MTA was significantly better than amalgam in preventing leakage of F. nucleatum past furcal perforation repairs.
Nakata, T.T., et al.Perforation Repair Comparing Mineral Trioxide Aggregate and Amalgam Using an Anaerobic Bacterial Leakage Model. JOE MAR 1998;24(3):184-186
Investigado por Dr. Ricardo Rivas Muñoz, Profesor de Endodoncia, FES Iztacala, UNAM