Table 5.
RADIOGRAPHIC SCORE AT 6, 12, 18, AND 24 MONTHS*
| Time (mos) | Material | Radiographic score |
Total n (%) |
|||
|---|---|---|---|---|---|---|
| 1 (NC) n (%) |
2 (DB, PCO, IRR) n (%) |
3 (ERR, PDL, IRR-P) n (%) |
4 (PRL) n (%) |
|||
| 6 (n=222) | DFC | 75 (66) | 27 (24) | 8 (7) | 4 (4) | 114 (51) |
| GMTA | 70 (65) | 30 (28) | 8 (7) | 0 (0) | 108 (49) | |
| 12 (n=186) | DFC | 38 (42) | 45 (50) | 6 (7) | 1 (1) | 90 (48) |
| GMTA | 50 (52) | 39 (41) | 7 (7) | 0 (0) | 96 (52) | |
| 18 (n=155) | DFC | 20 (26) | 48 (62) | 8 (10) | 2 (3) | 78 (50) |
| GMTA | 30 (39) | 44 (57) | 3 (4) | 0 (0) | 77 (50) | |
| 24 (n=131) | DFC | 16 (24) | 40 (61) | 5 (8) | 5 (8) | 66 (50) |
| GMTA | 27 (42) | 36 (55) | 2 (3) | 0 (0) | 65 (50) | |
| Combined (n=694) |
DFC | 149 (43) | 160 (46) | 27 (8) | 12 (3) | 348 (50) |
| GMTA | 177 (51) | 149 (43) | 20 (6) | 0 (0) | 346 (50) | |
*
NC=no change; DB=dentin bridge formation; PCO=pulpal canal obliteration; IRR=internal root resorption; PDL=periodontal ligament space; ERR=external root resorption; IRR-P=internal root resorption–perforated form; PRL=periradicular lesion; DFC=diluted formocresol; GMTA=gray mineral trioxide aggregate; radiographic failures included: IRR, ERR, IRR-P, and PRL. PDL occurring alone was not considered a failure.