Table 7 Sagittal dento-alveolar analysis: sagittal parameters

Incisal Protrusion

Distance between UIs and plane A (mm)

UIs/Occlusal plane angle

Angle between UIs axis and occlusal plane (°)

IMPA (Incisor-Mandibular plane angle)

Angle between LIs axis and Mandibular plane (°)

Overjet (OVJ)

Linear distance between incisal margin of the upper incisors and vestibular surface of the lower incisors (mm)

Overbite (OVB)

Linear distance between LIs incisal margin and projection of the incisal edge of the UIs (mm)

Occlusal plane inclination

Angle between occlusal plane and frankfurt plane (°)

LIs/B plane angle

Angle between LIs axis and plane B (°)