Table 1.
Normalization of the parameters data.
| Parameters | Normalization |
|---|---|
| X1: Gender | Male: 0.5; Female: 1 |
| X2: Age | ≤20: 0.5; 20–30: 0.25; 30–40: 0.5; ≥40: 1 |
| X3: Physique | Strong: 0; Middle: 0.5; Slim: 1 |
| X4: Oral hygiene | Good: 0; Middle: 0.5; Bad: 1 |
| X5: Relation of the wisdom teeth to the mandible ramus and second molar | Type I : 0; Type II: 0.5; Type III: 1 |
| X6: Relative depth of the wisdom teeth in bone | High: 0; Middle: 0.5; Low: 1 |
| X7: Relationship of the long axis of the wisdom teeth in relation to the long axis of the second molar | Vertical: 0; Buccalclination/Lingualclination: 0.25; Mesialclination/Distalclination: 0.50; Horizontal: 0.75; Invertion: 1 |
| X8: Relation of the wisdom teeth in mandibular dental arch | Lingual displacement: 0.25; Normotopia: 0.5; Buccal displacement: 1 |
| X9: Number of root | 1: 0; 2: 0.5; ≥3: 1 |
| X10: Type of incision | No incision: 0; Buccal incision: 0.5; Distal incision: 0.5; Buccal incision + Distal incision: 1 |
| X11: Location and quantity of bone removal | No: 0; Buccal/Distal/Occlusal: 0.5; Buccal + Distal/Buccal + Occlusal/Distal + Occlusa: 0.75; Buccal + Distal + Occlusal: 1 |
| X12: Section into pieces or not | no section: 0; section into 2 pieces: 0.5; section into 3 or more pieces: 1 |
| X13: Root fracture condition | No: 0; 1 root fracture: 0.25; 2 roots fracture: 0.5; ≥3 roots fracture: 1 |
| X14: Fracture of lingual bone plate or not | No: 0; Yes: 1 |
| X15: Surgical time | ≤10 minutes: 0; 10–20 minutes: 0.5; ≥20 minutes: 1 |