Table 2.
CAST and WHO codes and descriptions
| CAST | WHO | |||
|---|---|---|---|---|
| Primary and permanent teeth | Primary teeth | Permanent teeth | Description | |
| Code | Short description | Code | ||
| 0 | Sound | A | 0 | Sound |
| 1 | Sealant, partial or total | F | 6 | Fissure sealant |
| 2 | Restoration, direct or indirect | D | 3 | Filled, no decay |
| G | 7 | Bridge abutment, special crown or veneer implant | ||
| 3 | Enamel lesion | A | 0 | Sound |
| 4 | Dentine lesion | A | 0 | Sound |
| 5 | Cavitated dentine lesion | B | 1 | Decayed |
| C | 2 | Filled, with decay | ||
| 6 | Pulpal involvement | B | 1 | Decayed |
| 7 | Abscess/Fistula | B | 1 | Decayed |
| 8 | Missing due to caries | E | 4 | Missing, as a result of caries |
| 9 | Other | - | 9 | Not recorded |
| - | 5 | Missing, any other reason | ||
| - | 8 | Unerupted tooth (crown) | ||
| T | T | Trauma | ||