Orthodontics

• Distance from X-ray source to midsagittal plane: 5 feet
• Mid-treatment cephalogram color: Blue
• Point A: Subspinale
• Xi point: Center of rectangle enclosing ramus
• Downs analysis graph: Vorhies polygon / Wiggle
• SN-FH angle: 6 – 7°
• Movable landmarks: Point A & B