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Table 2 Cephalometric measurements

From: Successful treatment of multiple bilateral impactions - a case report

Ricketts analysis

Pretreatment (16 years, 4 months)

Posttreatment (19 years, 8 months)

Norm

Value

Deviation

Norm

Value

Deviation

Cranial relations

 Facial axis (°)

90 ± 3.5

88.4

vertical growth type

90 ± 3.5

89.0

dolichofacial face type

 Mandibular plane (°)

23.6 ± 4

34.0

29.6 ± 4

29.9

 Mandibular arc (°)

26 ± 4

30.1

27.7 ± 4

26.4

 Lower facial height (°)

45 ± 4

54.1

45 ± 4

58.1

 Maxillary depth (°)

90 ± 3

87.4

maxilla ortho- to retrognathic

90 ± 3

89.7

maxilla orthognathic

 SN-Palatal plane (°)

7.3 ± 3

−3.3

anterior rotation of maxilla

7.3 ± 3

−1.2

less anterior rotation of maxilla

 Facial (angle) depth (°)

89.4 ± 3

84.6

mandible prognathic

90.6 ± 3

85.7

mandible prognathic

 Facial taper

68 ± 3

61.4

posterior rotation of mandible

68 ± 3

64.4

less posterior rotation of mandible

 Convexity of point A (mm)

−0.4 ± 2

2.6

slight skeletal class III

−1.6 ± 2

3.8

skeletal class III

Denture Relations

 Upper incisor to A-Pog (mm)

3.5 ± 2

10.7

distinctly protruded

3.5 ± 2

9.6

slightly less protruded

 Upper incisor to FH (°)

111 ± 4

105.5

slightly retroinclined

111 ± 4

107.4

normally inclined

 Upper molar to PtV(mm)

19.3 ± 1

15.2

upper dental arch retruded

22.7 ± 1

18.3

upper dental arch retruded

 Lower incisor to A-Pog (mm)

1 ± 2

6.5

distinctly protruded

1 ± 2

7.1

distinctly protruded

 Lower incisor inclination (°)

22 ± 4

24.5

normally inclined

22 ± 4

23.4

normally inclined

 Interincisal angle (°)

130 ± 6

132.4

normal

130 ± 6

131.8

normal

 Molar relation (mm)

−3.0 ± 2

−2.6

Angle class I

−3.0 ± 2

−1.1

Angle class I

 Incisor Overjet (mm)

2.5 ± 1

4.6

increased

2.5 ± 1

2.5

normal

 Incisor Overbite (mm)

2.5 ± 1

3.2

increased

2.5 ± 1

2.2

normal

Esthetic Relations

 Lower lip – E-Plane(mm)

−2 ± 2

−3.9

lower lip slightly retruded

< -2 ± 2

−4.3

lower lip slightly retruded