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Table 4 Lateral cephalometric measurements in the three study groups

From: Skeletal and dentoalveolar characteristics of maxillary lateral incisor agenesis patients: a comparative cross-sectional study

Ā 

UMLIA (nā€‰=ā€‰24)

BMLIA (nā€‰=ā€‰24)

CTRL (nā€‰=ā€‰24)

P value

Mean (SD)

Skeletal measurements

SNA (Ā°)

81.83 (4.66)a

79.32 (2.69)b

81.43 (3.41)a,b

0.04*

SNB (Ā°)

77.88 (3.64)

79.34 (3.34)

78.80 (2.35)

0.28

ANB (Ā°)

3.95 (2.72)a

āˆ’ā€‰0.01 (1.96)b

2.64 (1.98)a

ā€‰<ā€‰0.001*

Co-A (mm)

83.81 (4.01)a

80.37 (3.10)b

85.48 (3.61)a

ā€‰<ā€‰0.001*

Co-Gn (mm)

106.07 (6.62)

107.70 (5.68)

108.86 (4.68)

0.24

Maxillo-mandibular differential (mm)

22.26 (4.08)a

27.33 (5.09)b

23.38 (4.21)a

0.001*

Wits appraisal (mm)

0.70 (2.14)a

āˆ’ā€‰2.52 (3.54)b

āˆ’ā€‰0.70 (2.79)a,b

0.005*

Facial angle (Ā°)

84.39 (3.71)a

88.51 (3.91)b

88.13 (3.43)b

ā€‰<ā€‰0.001*

Mandibular plane angle (Ā°)

26.30 (4.26)

24.01 (5.38)

25.03 (4.91)

0.27

Dental measurements

U1/NA angle (Ā°)

25.32 (6.16)

24.51 (6.03)

24.33 (8.28)

0.87

U1/NA distance (mm)

4.15 (2.25)

5.16 (2.59)

4.20 (2.50)

0.28

L1/NB angle (Ā°)

29.53 (7.07)

26.84 (5.57)

27.20 (3.68)

0.20

L1/NB distance (mm)

5.75 (2.76)

5.21 (2.29)

5.41 (2.17)

0.74

U1/FH (Ā°)

116.53 (6.64)

117.62 (6.02)

117.80 (4.71)

0.72

L1/Md plane (Ā°)

93.48 (7.87)

92.68 (6.71)

93.40 (6.41)

0.91

Soft tissue measurements

Nasolabial angle (Ā°)

109.32 (9.71)

108.39 (10.48)

109.48 (9.59)

0.92

U lip/E-line (mm)

āˆ’ā€‰1.65 (3.17)

āˆ’ā€‰3.49 (2.53)

āˆ’ā€‰2.66 (2.91)

0.14

L lip/E-line (mm)

0.32 (2.89)

āˆ’ā€‰0.27 (2.73)

āˆ’ā€‰0.83 (1.91)

0.30

  1. BMLIA, bilateral maxillary lateral incisor agenesis; CTRL, control; SD, standard deviation; UMLIA, unilateral maxillary lateral incisor agenesis
  2. One-way ANOVA was used for all comparisons except ANB, Wits appraisal and U lip/E-line were compared using Kruskal Wallis test
  3. *Statistically significant at pā€‰<ā€‰0.05
  4. a,bDifferent letters denote statistically significant differences between groups using Bonferroni adjusted significance level