Table 3 Distribution of the variables and analysis of the prognostic factors
Outcome (Clinical + CBCT) | CBCT healing category | |||||||
|---|---|---|---|---|---|---|---|---|
Tooth/ Root | Success | Complete | Incomplete | Uncertain | Unsatisfactory | |||
Factor | n (%) | n (%) | P value | n (%) | n (%) | n (%) | n (%) | P value |
Sex | ||||||||
Male | 37 (35.90) | 26 (70.27) | 0.220 | 21 (56.76) | 8 (21.62) | 5 (13.51) | 3 (8.11) | 0.157 |
Female | 66 (64.10) | 54 (81.82) | 29 (43.94) | 27 (40.91) | 4 (6.06) | 6 (9.09) | ||
Age | ||||||||
≤ 45 year | 81 (78.60) | 62 (76.54) | 0.775 | 38 (46.91) | 29 (35.80) | 7 (8.64) | 7 (8.64) | 0.886 |
> 45 year | 22 (21.40) | 18 (81.82) | 12 (54.55) | 6 (27.27) | 2 (9.09) | 2 (9.09) | ||
Tooth type | ||||||||
Anterior | 40 (38.83) | 29 (72.50) | 0.428 | 18 (45.00) | 14 (35.00) | 5 (12.50) | 3 (7.50) | 0.738 |
Premolar | 24 (23.30) | 21(87.50) | 15 (62.50) | 7 (29.17) | 1 (4.17) | 1 (4.17) | ||
Molar | 39 (37.86) | 30 (76.92) | 17 (43.59) | 14 (35.90) | 3 (7.69) | 5 (12.82) | ||
Tooth position | ||||||||
Maxillary | 73 (70.90) | 58 (79.45) | 0.603 | 38 (52.05) | 24 (32.88) | 6 (8.22) | 5 (6.85) | 0.549 |
Mandibular | 30 (29.10) | 22 (73.33) | 12 (40.00) | 11 (36.67) | 3 (10.00) | 4 (13.33) | ||
Size of PARL* | ||||||||
≤ 5 mm | 84 (66.10) | 65 (77.4) | 0.828 | 50 (59.52) | 24 (28.57) | 4 (4.76) | 6 (7.14) | 0.146 |
> 5 mm | 43 (33.90) | 34 (79.07) | 18 (41.86) | 16 (37.21) | 6 (13.95) | 3 (6.97) | ||
Volume of PARL | ||||||||
≤ 70 mm3 | 50 (50.50) | 37 (74.00) | 0.361 | 26 (52.00) | 15 (30.00) | 2 (4.00) | 7 (14.00) | 0.150 |
> 70 mm3 | 49 (49.50) | 40 (81.63) | 22 (44.90) | 19 (38.78) | 6 (12.24) | 2 (4.08) | ||
Length of RCF | ||||||||
Adequate | 59 (57.30) | 47 (79.66) | 0.574 | 30 (50.85) | 21 (35.59) | 3 (5.08) | 5 (8.47) | 0.508 |
Inadequate | 44 (42.70) | 33 (75.00) | 20 (45.45) | 14 (31.82) | 6 (13.64) | 4 (9.09) | ||
Density of RCF | ||||||||
Adequate | 56 (54.40) | 47 (83.93) | 0.096 | 33 (58.93) | 18 (32.14) | 2 (3.57) | 3 (5.36) | 0.044** |
Inadequate | 47 (45.60) | 33 (70.21) | 17 (36.17) | 17 (36.17) | 7 (14.89) | 6 (12.77) | ||
Preoperative nonsurgical retreatment | ||||||||
Yes | 30 (29.10) | 26 (86.66) | 0.199 | 13 (43.33) | 14 (46.67) | 2 (6.67) | 1 (3.33) | 0.335 |
No | 73 (70.90) | 54 (73.97) | 37 (50.68) | 21 (28.77) | 7 (9.59) | 8 (10.96) | ||
Angle of root-end resection* | ||||||||
≤ 20° | 114 (89.80) | 88 (77.19) | 0.732 | 61 (53.51) | 35 (30.70) | 9 (7.89) | 9 (7.89) | 0.854 |
> 20° | 13 (10.20) | 11 (84.62) | 7 (53.85) | 5 (38.46) | 1 (7.69) | 0 (0.0) | ||
Depth of retrograde filling material* | ||||||||
< 2.5 mm | 97 (76.40) | 73 (75.26) | 0.218 | 50 (51.55) | 29 (29.89) | 10 (10.31) | 8 (8.25) | 0.234 |
≥ 2.5 mm | 30 (23.60) | 26 (86.67) | 18 (60.00) | 11 (36.67) | 0 (0.00) | 1 (3.33) | ||