In the leakage test, after post space preparation, the amount of fluid transport along the apical root fillings was measured.
To evaluate surface cleanliness of root canal walls along post space after endodontic treatment using 2 different irrigant regimens, obturation techniques, and post space preparation for adhesive bonding.
The purpose of this study was to evaluate the effect of immediate and delayed post space preparation on the sealing ability of a new root canal filling material.
"Destination Mir," which will put a group of American would-be astronauts through the rigors of space preparation under Russian trainers, will not be taped until fall 2001, Mr. Burnett said.
The key steps in the procedure are outlined, and include positioning, fluoroscopic positioning/guidance, exposure with tubular retractor system, technique for ipsilateral and contra-lateral decompression, disc space preparation and interbody grafting, percutaneous pedicle screw and rod placement, and closure.
It has been postulated that end plate violation during disc space preparation, rhBMP-2 overdosing, or a combination thereof can contribute to the development of vertebral osteolysis when rhBMP-2 is used in the lumbar interspace.
For each group, a summation of the leakage at all time intervals after the post space preparation showed that the 2 RSA groups leaked significantly less than the other 2 groups (P =.000).
After post space preparation, leakage along the remaining apical root fillings was measured repeatedly at 1 week, 1, 2, 6, 12, and 18 months respectively and recorded in microliters per day.
Before post space preparation, groups 1 and 2 leaked significantly less than groups 3 and 4 (P =.001), whereas no significant difference existed between the groups 1 and 2 (P =.317) or between the groups 3 and 4 (P =.074).
