Cephalometric Analysis (FMA)

Facial angle (Nasion pogonion to FH. Plane): Range 85.5 (-+ 3.0)

87

• Smaller angle: Retrusive chin in relation to cranial base

• Increased angle: Prominent chin in relation to cranial base

Y axis (Sella gnathion to FH. Plane): Range 65 (-+ 2.8)

67

• Smaller angle: Horizontal growth pattern of mandible

• Increased angle: Vertical growth pattern of mandible

ANB (Nasion-point A to Nasion-point B): Range 2.5 (-+ 2.5)

3

• Smaller angle: Skeletal class III

• Increased angle: Skeletal class II

SNA (Point A to Sella-Nasion): Range 84.5 (-+ 5.3)

77

• Smaller angle: Maxilla is retruded in relation to cranial base

• Increased angle: Maxilla is protruded in relation to cranial base

SNB (Point B to Sella-Nasion): Range 82 (-+ 4.9)

88

• Smaller angle: Mandible is retruded in relation to cranial base

• Increased angle: Mandible is protruded in relation to cranial base

1/1 (Uppper incisor to lower incisor): Range 135.4 (-+ 8.7)

128

• Smaller angle: Proclined incisors

• Increased angle: Retroclination of inciros

IMPA (Long axis of lower incisor to mandibular plane): Range 96 (-+ 7.4)

102

• Smaller angle: Lower incisors retroclined

• Increased angle: Lower incisors proclined

FMA (Mandibular plane to FH plane): Range 28.7 (-+ 5.8)

24

• Smaller angle: Horizontal growth (deep bite tendency)

• Increased angle: Vertical growth (open bite tendency)

FMIA (FH plane to Mandibular incisor): Range 55.2 (-+ 6.9)

61

• Smaller angle: Lower incisor protrusive in relation to cranial base

• Increased angle: Lower incisor retrusive in relation to cranial base

1/SN (Sella-nasion to maxillary incisor): Range 103 (-+ 5.0)

98

• Smaller angle: retrusion of maxillary central incisors

• Increased angle: Protrusion of maxillary central incisors