Ha. Alhadainy et Ai. Abdalla, ARTIFICIAL FLOOR TECHNIQUE USED FOR THE REPAIR OF FURCATION PERFORATIONS - A MICROLEAKAGE STUDY, Journal of endodontics, 24(1), 1998, pp. 33-35
Access openings and furcation perforations were prepared in 45 human e
xtracted teeth randomly divided into three equal groups, Furcation per
forations were obtruded using only a resin-modified, glass-ionomer mat
erial (Vitrebond) in the first group, Calcium sulfate and hydroxylapat
ite were used as artificial floors under the Vitrebond in the second a
nd third groups, respectively, Pulp chambers and access openings were
filled with composite resin, After immersion in 2% methylene blue solu
tion for 2 wk, the teeth were sectioned and dye penetration was measur
ed under a stereomicroscope using a NIH Image 1.47 Macintosh program.
Results indicated that calcium sulfate and hydroxylapatite artificial
floors significantly improved the sealing ability of Vitrebond and pro
vided successful barriers against its overextension.