Landmark | Definition |
---|---|
ANS | Point at the tip of the anterior nasal spine |
PNS | Point at the dorsal limit of the maxilla |
Me | The most posterior point on the mandibular symphysis |
I | Point at the edge of the maxillary incisor |
C1 | The most anterior point of the atlas |
NF | Plane through ANS and PNS |
SP | Plane passing the edge of the maxillary incisor and parallel to the palatal plane |
AM | Boundary point between the maxillary central incisor and the palatal mucosa |
E | Point nearest to the tongue base in the region of contact between tongue and palatal mucosa |
MM | Point at which a line perpendicular to NF drawn through a point equidistant between ANS and PNS intersects the palatal mucosa |
MT | Point at which a line perpendicular to NF drawn through a point equidistant between ANS and PNS intersects the dorsal tongue |
MS | Point at which a line perpendicular to NF drawn through a point equidistant between ANS and PNS intersects SP |
PM | Point at which the soft and hard palates intersect |
PT | Point at which a line perpendicular to NF through point PM intersects the dorsal tongue |
PS | Point at which a line perpendicular to NF through point PM intersects SP |
D | Point at which a line through Me and C1 intersects the dorsal tongue |
Ti | Tongue tip |
SI | Point at which a line perpendicular to NF through PNS intersects SP |