Table 1.
Distributions of the evaluated teeth (n=692).
| Variable | N (%) |
|---|---|
| Training duration | |
| 1 year | 312 (45.09) |
| 2 years | 380 (54.91) |
| Preoperative condition | |
| None | 176 (25.43) |
| Full coverage restoration (FCR) | 55 (7.95) |
| Retreatment | 78 (11.27) |
| Curved (10–30°) | 250 (36.16) |
| FCR and retreatment | 54 (7.80) |
| Curved and retreatment | 41 (5.92) |
| Curved and FCR | 18 (2.60) |
| Curved and FCR & retreatment | 20 (2.89) |
| Tooth position in the dental arch | |
| Central incisor | 48 (6.94) |
| Lateral incisor | 80 (11.56) |
| Canine | 117 (16.91) |
| 1st premolar | 103 (14.88) |
| 2nd premolar | 148 (21.39) |
| 1st molar | 132 (19.08) |
| 2nd molar | 63 (9.10) |
| 3rd molar | 1 (0.14) |
| Obturation length | |
| Adequate | 589 (85.12) |
| Inadequate: short >2 mm | 65 (9.39) |
| Inadequate: long <2 mm | 32 (4.62) |
| Inadequate: long >2 mm | 6 (0.87) |
| Obturation density | |
| Adequate | 622 (89.88) |
| Inadequate | 70 (10.12) |
| Mishaps | |
| None | 527 (76.16) |
| Transportation | 54 (7.80) |
| Ledge | 55 (7.95) |
| Perforation | 48 (6.94) |
| Separated instrument | 4 (0.58) |
| Missed canals | 4 (0.58) |
| Preparation taper | |
| Adequate | 615 (88.87) |
| Inadequate | 77 (11.13) |