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Abbreviations of tooth-related variables (tooth-related factors) for coding the 36 cases in this survey
| Variables | Abbreviations | ||
|---|---|---|---|
| Tooth position | LI: Incisor | LP: Premolar | LM: Molar |
| Coronal status | C: Cavity | V: Full veneer crown | |
| Root canal filling status | A: Absent | U: Underfilling | |
| Size of periapical radiolucency (diameter) | S: Small (< 3 mm) | M: Medium (4-5 mm) | L: Large (> 5 mm) |
