This document lists common skeletal dental measurements and their normal ranges, including the facial angle, angle of convexity, A-B plane, mandibular plane, Y-axis, cant of occlusal plane, interincisal angle, incisor-occlusal plane angle, incisor-mandibular plane angle, protrusion of maxillary incisors. Average values are provided for each measurement.

1. SKELETAL DENTAL
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2. Facial angle
82° – 95°
87.8°
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3. Angle of convexity
-8.5° to +10°
0°
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4. Angle of convexity
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5. A – B PLANE
0° to - 9°
- 4.6°
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6. Mandibular Plane
17° – 28°
21.9°
Y- AXIS
53° – 66°
59.4°
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7. Cant Of Occlusal Plane
1.5° to 14°
9.3°
Interincisal angle
130° -150°
135.4°
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8. Incisor – Occlusal plane
3.5° – 20°
14.5°
Incisor – Mand plane
-8.5° to 7°
1.4°
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9. Protrusion of max incisors
-1 to + 5 mm
+2.7 mm
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10. Protrusion of max incisors
-1 to + 5 mm
+2.7 mm
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