Table 1 Descriptive information of the study population
Independent variable | Subgroup | Sample size, n (%) | PL status | Mean PL volume (mm3) | Cortical bone destruction status | Mean buccal plate bone height (mm) | ||
|---|---|---|---|---|---|---|---|---|
Present, n (%) | Absent, n (%) | Â | Destructed, n (%) | Intact, n (%) | ||||
Gender | Female | 181 (64.2%) | 86 (47.5%) | 95 (52.5%) | 18.24 | 90 (%) | 91 (%) | 9.48 |
Male | 101 (35.8%) | 53 (52.5%) | 48 (47.5%) | 19.48 | 47 (%) | 54 (%) | 9.39 | |
Jaw type | Upper | 175 (62.1%) | 100 (57.1%) | 75 (42.9%) | 23 | 88 (50.3%) | 87 (49.7%) | 9.25 |
Lower | 107 (37.9%) | 39 (36.4%) | 68 (63.6%) | 11.62 | 49 (45.8%) | 58 (54.2%) | 9.77 | |
Missed canal | Present | 142 (50.4%) | 100 (70.4%) | 42 (29.6%) | 29.4 | 65 (45.8%) | 77 (54.2%) | 8.99 |
Absent | 140 (49.6%) | 39 (27.8%) | 101 (72.2%) | 7.73 | 72 (51.4%) | 68 (48.6%) | 9.91 | |
Number of missed canals | 0 | 140 (49.6%) | 39 (27.8%) | 101 (72.2%) | 7.73 | 72 (51.4%) | 68 (48.6%) | 9.91 |
1 | 132 (46.8%) | 91 (69%) | 41 (31%) | 26.55 | 57 (43.2%) | 75 (56.8%) | 9.06 | |
2 | 8 (2.8%) | 7 (87.5%) | 1 (12.5%) | 57.01 | 6 (75%) | 2 (25%) | 8.85 | |
3 | 2 (0.8%) | 2 (100%) | 0 | 112.71 | 2 (100%) | 0 | 5.38 | |
Obturation length | Appropriate | 209 (74.2%) | 88 (42.1%) | 121 (57.9%) | 16.86 | 99 (47.4%) | 110 (52.6%) | 9.48 |
Underfilled | 68 (24.1%) | 47 (69.1%) | 21 (30.8%) | 23.68 | 35 (51.5%) | 33 (48.5%) | 9.39 | |
Overfilled | 5 (1.7%) | 4 (80%) | 1 (20%) | 26.88 | 3 (60%) | 2 (40%) | 8.85 | |
Restoration | Amalgam | 131 (46.4%) | 62 (47.3%) | 69 (52.7%) | 17.13 | 63 (48.1%) | 68 (51.9%) | 9.59 |
Composite | 23 (8.1%) | 13 (56.5%) | 10 (43.5%) | 35.34 | 9 (39.1%) | 14 (60.9%) | 9.29 | |
PFM crown | 126 (44.6%) | 63 (50%) | 63 (50%) | 17.67 | 63 (50%) | 63 (50%) | 9.33 | |
Extensive caries | 2 (0.7%) | 1 (50%) | 1 (50%) | 1.99 | 1 (50%) | 1 (50%) | 8.75 | |
Separated instrument | Present | 3 (1%) | 3 (100%) | 0 | 44.03 | 3 (100%) | 0 | 6.21 |
Absent | 279 (99%) | 137 (49.1%) | 142 (51.9%) | 18.41 | 134 (48%) | 145 (52%) | 9.48 | |
Post | Present | 78 (27.6%) | 37 (47.4%) | 41 (52.6%) | 18.14 | 37 (47.4%) | 41 (52.6%) | 9.40 |
Absent | 204 (72.3%) | 104 (51%) | 100 (49%) | 18.89 | 100 (49%) | 104 (51%) | 9.47 | |
Perforation | Present | 11 (3.9%) | 10 (90.9%) | 1 (9.1%) | 28.29 | 8 (72.7%) | 3 (27.3%) | 7.49 |
Absent | 271 (96.1%) | 129 (47.6%) | 142 (52.4%) | 18.29 | 129 (47.6%) | 142 (52.4%) | 9.53 | |
Total | - | 282 (100%) | 139 (49.3%) | 143 (50.7%) | 18.68 | 137 (48.5%) | 145 (51.5%) | 9.45 |