MMP

The threedimensional (3D) angle between the palatal line and the mandibular plane; maxillarymandibular plane angle.

MP/SN

The 3D angle between the line SN and the mandibular plane

Y axis angle

The 3D angle between yaxis and Frankfurt horizontal plane

Facial height ratio

The ratio of lower to total facial height

Lower facial height

The distance between the anterior nasal spine (ANS) and the Menton (Me)

SNA

The angle between the points S, N, and A

Effective maxillary length

The linear distance between the Condylion and A points

SNB

The angle between the points S, N, and B

effective mandibular length

The linear distance between the Condylion and the Gnathion points


The angle between three landmarks: A, N, and B

SN/occlusal plane

The angle between the line passing from sella turcica to nasion and the occlusal plane

U1 AP position

The horizontal distance between the incisal edges of the upper central incisors and the frontal plane, as viewed from the sagittal view.

U1 vertical position

The linear distance from the midroot of the upper incisors to the FHP, as viewed from the sagittal view

U1 inclination

The angle formed between the frontal plane and the upper right and left central incisor long axes, as viewed from sagittal view

U6 AP position

The linear distance between the mesiobuccal cusp tip of UR6 and the vertical plane, as viewed from the sagittal view.

U6 vertical position

The linear distance between the furcation area of the upper right first molar to the FHP, as viewed from the sagittal view.

L1 inclination

The angle formed between the frontal plane and the lower incisors long axes, as viewed from the sagittal view

L1 AP position

The horizontal distance between the incisal edges of the lower incisors and the frontal plane, as viewed from the sagittal view.

L1 to NB line

The horizontal distance between the incisal edges of the lower incisors and the NB line, as viewed from the sagittal view

L1 vertical position

The linear distance from the midroot of the lower incisors to the mandibular plane, as viewed from the sagittal view

L6 vertical position

The linear distance from the furcation points of the lower right first molar to the mandibular plane, as viewed from the sagittal view

L6 AP position

The linear distance between the mesiobuccal cusp tip of lower left first molar and the vertical plane, as viewed from the sagittal view.
