Lab 3 Measurement Analysis: Down's Analysis & Steiner's Analysis Flashcards
This is one of the most frequently used cephalometric analysis, consisting of 10 parameters (5 skeletal, 5 dental).
Down’s analysis
What are the 3 limitations of Down’s analysis?
- Too many landmarks
- Too many measurements
- Time consuming
What are the 5 skeletal parameters (Down’s)?
- Facial angle
- Angle of convexity
- A-B plane angle
- Mandibular plane angle
- Y-axis (growth axis)
What are the 5 dental parameters (Down’s)?
- Cant of occlusal plane
- Inter-incisal angle
- Incisor occlusal plane angle
- Incisor mandibular plane angle
- Upper incisor to A-pog line
This analysis is developed with an idea of providing maximal information with the least number of measurements.
Steiner’s analysis
Steiner’s analysis are divided into 3 parts, which are..?
- Skeletal
- Dental
- Soft tissue
What are the 5 skeletal analysis (Steiner’s)?
- SNA Angle
- SNB Angle
- ANB Angle
- Mandibular plane angle
- Occlusal plane angle
What are the 5 dental analysis (Steiner’s)?
- Upper incisor to N-A (angle)
- Upper incisor to N-A (linear)
- Inter-incisal angle
- Lower incisor to N-B (angle)
- Lower incisor to N-B (linear)
The facial contour line on Steiner’s soft tissue analysis, formed by drawing a line on the soft tissue contour of the chin to the middle of the lower border of the nose, is called..?
S line