Research Article
Retreatment Predictions in Odontology by means of CBR Systems
Table 1
Description of the final preprocessed variables.
| Variable | Class |
| Habits-parafunctions | Categorical 2 values | General pathology | Binary | Total current treatments | Binary | Allergy | Binary | Sessions | Discrete | Mechanical/manual instrumentation | Binary | Lateral or vertical | Binary | Anesthetic | Categorical 3 values | Clamps | Categorical 4 values | Ranking difficulty level | Categorical 3 values | Student course | Discrete 4 values | Tooth position | Categorical 3 values | Anatomical characteristics of the crown | Categorical 3 values | Root anatomy | Categorical 3 values | Anomalies | Binary | Type of restoration: Perno | Binary | Perno | Binary | Type | Binary | Diámetro diameter | Categorical 5 values | Length | Categorical 3 values | Time endodontics-restoration | Categorical 4 values | Type of pain | Categorical 4 values | Inflammation | Binary | Fistula | Binary | Number of roots | Discrete 3 values | Number of tubes | Discrete 4 values | Root morphology | Binary | Curvatures | Binary | Degree | Categorical 3 values | Bone level | Categorical 3 values | Stable occlusion | Categorical 3 values | Fracture type | Categorical 2 values | Location | Categorical 5 values | Signs of fissure/fracture | Binary | Probing | Binary | Movility | Binary | visible crack | Binary | Level | Binary | Time to failure | Categorical 4 values | Retreatments | Binary | Percha solvent | Binary | Use of rotary | Binary | Failures in retreatment | Binary |
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