Ortho - Cephalometric pt.3 (Planes)

this plane is important in the determination of length of ramus

• Ar-Go Plane

• Nasion to subspinale (Point A) plane

• Nasion to supramentale (Point B) plane

• Y-Axis of growth (Y axis)

• Axis of 1

a line through the most protrusiveness maxillary central incisor from incisal to apical end. It is used to judge the angulation of the tooth in comprarison with cranial base the (SN plane).

• Axis of 1

• Nasion to subspinale (Point A) plane

• Nasion to supramentale (Point B) plane

• Y-Axis of growth (Y axis)

• Axis of 1

established by drawing a line through the mandibular central incisor from the apical to the incisal end. It used to judge , the angulation of this tooth the mandibular plane. This plane usually intersect with TH plane.

• Axis of 1

• Nasion to subspinale (Point A) plane

• Nasion to supramentale (Point B) plane

• Y-Axis of growth (Y axis)

• Axis of 1

established by drawing a straight line connecting sella to gnathion. It is used to judge whether the growth of the mandible is in more horizontal or more vertical direction

• Axis of 1

• Nasion to subspinale (Point A) plane

• Nasion to supramentale (Point B) plane

• Y-Axis of growth (Y axis)

• Axis of 1

- a plane formed by the line connecting Sella turcica & the Nasion.

Significance It represents the anteroposterior extent of anterior cranial base

• SN Plane

• FH Plane

• Occlusal Plane

• Palatal Plane

• Mandibular Plane/ Me-Go Plane

- a plane that connects the lowest point of the orbit (orbitale) to the superior point of the external auditory meatus (porion).

Significance: It is horizontal cephalometric reference plane used to assess horizontal growth during the analysis.

• SN Plane

• FH Plane

• Occlusal Plane

• Palatal Plane

• Mandibular Plane/ Me-Go Plane

- is formed by a line connecting anterior point of occlusion (APOcc) to the posterior point of occlusion (PPOcc)

Significance: It has significant role in the assessment of horizontal growth pattern

• SN Plane

• FH Plane

• Occlusal Plane

• Palatal Plane

• Mandibular Plane/ Me-Go Plane

- is formed by the line joining the point anterior nasal spine (ANS) to the posterior nasal spine (PNS).

Significance: Growth pattern assessment.

• SN Plane

• FH Plane

• Occlusal Plane

• Palatal Plane

• Mandibular Plane/ Me-Go Plane

- is the plane that connects the point Me -(Menton) to the point Go (Gonion).

Significance: Growth pattern assessment.

• SN Plane

• FH Plane

• Occlusal Plane

• Palatal Plane

• Mandibular Plane/ Me-Go Plane

- is a line from point A on the maxilla to pogonion on the mandible.

• A Pog Line

• Facial Plane

• Facial Axis

• E-Plane

• S Ar Plane