Table 2 Reference planes and lines of temporomandibular landmarks
Reference Plane / line | Abb. | Definition | |
|---|---|---|---|
Reference Plane | Horizontal Plane | HP | It’s composed of a three-point right Orbitale and two sides of porion. |
Mid-Sagittal Plane | MSP | Sella and Nasion created a perpendicular plane to the horizontal plane. | |
Vertical Plane | VP | The plane passes through the sella and is perpendicular to the sagittal and horizontal planes. | |
Reference line | Mandibular fossa line | MFL | The two bony mandibular fossa MF points are used to draw a line. |
TM line | TML | A line is created by the point of the Anterior Tubercle and the tip of the Auditory Meatus. | |
Sagittal condyle neckline | CNL | A line extends from ACN–PCN. | |
Anteroposterior condylar line | CdA - CdP | A line extends from CdA to CdP. | |
Mediolateral condylar line | CdM - CdL | A line extends from CdM to CdL. | |