Table 1.
Baseline demographics of the 18 patients
| Case # | Age | Gender* | Affected tooth$ | Aetiology of pulp necrosis | Tenderness to percussion | Presence of periapical lesion | Presence of sinus tract | Periapical diagnosis |
|---|---|---|---|---|---|---|---|---|
| 1 | 34 | M | 11 | Trauma | Absent | Present | Present | Chronic apical abscess |
| 2 | 20 | M | 21 | Trauma | Absent | Present | Present | Chronic apical abscess |
| 3 | 32 | F | 21 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 4 | 21 | F | 21 | Defective restoration | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 5 | 20 | M | 12 | Trauma | Absent | Present | Present | Chronic apical abscess |
| 6 | 24 | F | 21 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 7 | 20 | M | 21 | Defective restoration | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 8 | 31 | F | 21 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 9 | 25 | F | 21 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 10 | 20 | M | 11 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 11 | 34 | F | 11 | Defective restoration | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 12 | 27 | F | 21 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 13 | 20 | F | 21 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 14 | 21 | F | 11 | Defective Restoration | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 15 | 32 | M | 11 | Trauma | Absent | Present | Present | Chronic apical abscess |
| 16 | 33 | F | 11 | Defective restoration | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 17 | 23 | F | 21 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
| 18 | 21 | M | 21 | Trauma | Absent | Present | Absent | Asymptomatic apical periodontitis |
*Gender: M;Male,F;Female $FDI tooth numbering system