Table 2 The proposed description of the OCI grades
Grade | Side | Description |
|---|---|---|
Grade 0 | No OC is present (the OP is parallel to the true horizontal plane) | |
Grade I | Right | The OP is tilted down on the right side, and the OC is NOT detected by either the orthodontists or the laypersons |
Left | The OP is tilted down on the left side, and the OC is NOT detected by either the orthodontists or the laypersons | |
Grade II | Right | The OP is tilted down on the right side, and the OC is detected by the orthodontists only |
Left | The OP is tilted down on the left side, and the OC is detected by the orthodontists only | |
Grade III | Right | The OP is tilted down on the right side, and the OC is detected by the orthodontists and the laypersons |
Left | The OP is tilted down on the left side, and the OC is detected by the orthodontists and the laypersons |