Comparison of mini-screw-assisted rapid maxillary expansion in adolescents with different body mass indices: a prospective clinical study

Buyuk, Suleyman Kutalmış; Simsek, Huseyin; Hatal, Sedanur; Sarımehmetoglu, Nilge; Odabası, Didem

doi:10.21307/aoj-2022.005

Figures & Tables

Mini-screw-assisted rapid maxillary expansion.

(1) SNA, (2) SNB, (3) ANB, (4) gonial angle, (5) SN/GoMe, (6) FMA, (7) FMIA, (8) IMPA, (9) U1/SN, (10) nasolabial angle, (11) Z angle.

(1) Wits appraisal, (2) total anterior facial height, (3) lower anterior facial height, (4) U6/PP, (5) L6/MP.

(1) Bizygomatic width, (2) lateronasal width, (3) maxillomandibulare width, (4) maxillare width.

(1) Intercanine width, (2) palatal area, (3) intermolar width.

(1) Intercanine width, (2) intermolar width.

Comparison of initial (T0) lateral cephalometric between groups_

Parameters	Normal weightMean (SD)	Overweight obeseMean (SD)	P Value
Lateral cephalometric variables
SNA (°)	80.16 (4.40)	80.49 (4.62)	0.872^a
SNB (°)	76.79 (4.17)	77.33 (3.24)	0.750^a
ANB (°)	3.37 (1.62)	3.15 (3.18)	0.848^a
Gonial angle (°)	129.21 (6.28)	127.91 (8.13)	0.694^a
SN_GoMe (°)	37.23 (4.32)	37.02 (3.81)	0.909^a
FMA (°)	28.85 (5.47)	25.37 (5.33)	0.167^a
FMIA (°)	61.05 (6.93)	62.53 (7.85)	0.660^a
IMPA (°)	90.11 (4.67)	92.12 (7.83)	0.495^a
U1/SN (°)	100.71 (7.52)	102.76 (3.57)	0.446^a
Nasolabial angle (°)	113.74 (8.41)	106.87 (14.43)	0.210^a
Z angle (°)	87.47 (5.72)	93.41 (7.15)	0.055^a
Wits (mm)	−0.84 (2.89)	−0.89 (4.33)	0.976^a
Total anterior facial height (mm)	108.61 (4.80)	112.43 (5.05)	0.100^a
Lower anterior facial height (mm)	61.45 (4.23)	64.22 (4.48)	0.172^a
U6/PP (mm)	20.54 (1.92)	22.25 (1.73)	0.051^a
L6/PP (mm)	26.90 (1.87)	27.73 (1.53)	0.292^a

P-A cephalometric variables
Bizygomatic width (mm)	116.06 (4.38)	116.70 (3.78)	0.731^a
Lateronasal width (mm)	29.50 (2.39)	27.96 (2.68)	0.212^b
Maxillomandibulare width (mm)	76.04 (4.39)	75.03 (5.20)	0.645^a
Maxillary width (mm)	58.19 (4.75)	57.67 (3.46)	0.783^a

3D model measurement
Upper intercanine width (mm)	31.46(2.27)	32.81 (2.36)	0.207^b
Upper intermolar width (mm)	48.44 (3.15)	48.72 (2.98)	0.840^a
Palatal area (mm²)	1302.67 (147.84)	1271.10 (120.52)	0.607^a
Lower intercanine width (mm)	25.39 (2.61)	26.16 (1.57)	0.436^a
Lower intermolar width (mm)	47.08 (2.82)	47.07 (2.83)	0.995^a

Changes (T1-T0) in Normal weight and overweight-obese groups_

	Normal weight			Overweight obese

Parameters	T0Mean (SD)	T1Mean (SD)	P Value	T0Mean (SD)	T1Mean (SD)	P Value
Lateral cephalometric variables
SNA (°)	80.16 (4.40)	80.67 (4.10)	0.258^a	80.49 (4.62)	80.53 (4.37)	0.912 ^a
SNB (°)	76.79 (4.17)	76.48 (4.29)	0.285^b	77.33 (3.24)	77.48 (3.31)	0.630^a
ANB (°)	3.37 (1.62)	4.18 (1.62)	0.024^a	3.15 (3.18)	3.07 (2.90)	0.756^b
Gonial angle (°)	129.21 (6.28)	128.90 (7.09)	0.763^a	127.91 (8.13)	129.04 (8.11)	0.040^a
SN_GoMe (°)	37.23 (4.32)	38.10 (4.32)	0.080^a	37.02 (3.81)	37.43 (4.23)	0.429^a
FMA (°)	28.85 (5.47)	29.77 (6.60)	0.351^a	25.37 (5.33)	25.01 (4.97)	0.417^a
FMIA (°)	61.05 (6.93)	60.49 (8.70)	0.624^a	62.53 (7.85)	63.35 (5.96)	0.386^b
IMPA (°)	90.11 (4.67)	89.74 (3.57)	0.679^a	92.12 (7.83)	91.64 (6.11)	0.542^a
U1/SN (°)	100.71 (7.52)	101.60 (8.68)	0.486^a	102.76 (3.57)	102.80 (2.16)	0.973^b
Nasolabial angle (°)	113.74 (8.41)	112.44 (10.30)	0.530^a	106.87 (14.43)	110.96 (12.44)	0.003^a
Z angle (°)	87.47 (5.72)	84.29 (8.00)	0.045^a	93.41 (7.15)	93.61 (5.88)	0.826^a
Wits (mm)	−0.84 (2.89)	0.03 (1.2.89)	0.022^a	−0.89 (4.33)	−1.30 (4.27)	0.184^a
Total anterior facial height (mm)	108.61 (4.80)	110.15 (5.12)	0.005^a	112.43 (5.05)	113.50 (4.22)	0.096^a
Lower anterior facial height (mm)	61.45 (4.23)	63.09 (4.76)	0.004^a	64.22 (4.48)	64.88 (4.14)	0.188^a
U6/PP (mm)	20.54 (1.92)	20.11 (2.59)	0.259^a	22.25 (1.73)	21.96 (2.40)	0.439^a
L6/PP (mm)	26.90 (1.87)	27.06 (2.14)	0.630^a	27.73 (1.53)	27.97 (1.34)	0.254^a

P-A cephalometric variables
Bizygomatic width (mm)	116.06 (4.38)	116.59 (3.85)	0.239^a	116.70 (3.78)	117.26 (3.21)	0.059^a
Lateronasal width (mm)	29.50 (2.39)	29.94 (2.18)	0.182^b	27.96 (2.68)	29.68 (2.25)	<0.001^a
Maxillomandibulare width (mm)	76.04 (4.39)	75.64 (3.61)	0.497^a	75.03 (5.20)	76.03 (4.38)	0.136^a
Maxillary width (mm)	58.19 (4.75)	59.02 (3.58)	0.266^a	57.67 (3.46)	59.99 (3.57)	0.002^a

3D model measurements
Upper intercanine width (mm)	31.46 (2.27)	35.05 (2.49)	<0.001^a	32.81 (2.36)	35.65 (2.08)	<0.001^a
Upper intermolar width (mm)	48.44 (3.15)	54.05 (2.06)	<0.001^a	48.72 (2.98)	54.46 (2.70)	<0.001^a
Palatal area (mm²)	1302.67 (147.84)	1570.21 (167.13)	0.001^a	1271.10 (120.52)	1640.73 (139.00)	<0.001^a
Lower intercanine width (mm)	25.39 (2.61)	25.78 (2.43)	0.156^a	26.16 (1.57)	26.67 (1.60)	0.097^b
Lower intermolar width (mm)	47.08 (2.82)	47.30 (2.83)	0.621^a	47.07 (2.83)	47.14 (3.41)	0.851^a

Comparison of evaluated parameter changes (T1–T0) between groups_

Parameters	Normal weightMean (SD)	Overweight obeseMean (SD)	P Value
Lateral cephalometric variables
SNA (°)	0.51 (1.33)	0.04 (1.11)	0.403^a
SNB (°)	−0.31 (0.86)	0.15 (0.95)	0.272^a
ANB (°)	0.81 (0.94)	−0.08 (0.79)	0.068^b
Gonial angle (°)	−0.31 (3.16)	1.13 (1.49)	0.208^a
SN_GoMe (°)	0.87 (1.39)	0.41 (1.57)	0.497^a
FMA (°)	0.92 (2.96)	−0.36 (1.34)	0.112^b
FMIA (°)	−0.56 (3.49)	0.82 (2.74)	0.339^a
IMPA (°)	−0.37 (2.73)	−0.48 (2.39)	0.925^a
U1/SN (°)	0.89 (3.87)	0.04 (3.59)	0.617^a
Nasolabial angle (°)	−1.30 (6.29)	4.09 (3.28)	0.027^a
Z angle (°)	−3.18 (4.31)	0.20 (2.79)	0.052^a
Wits (mm)	0.87 (1.00)	−0.41 (0.90)	0.008^a
Total anterior facial height (mm)	1.54 (1.34)	1.10 (1.87)	0.344^a
Lower anterior facial height (mm)	1.64 (1.37)	0.66 (1.47)	0.111^a
U6/PP (mm)	−0.43 (1.13)	−0.29 (1.13)	0.785^a
L6/PP (mm)	0.16 (1.01)	0.24 (0.62)	0.834^a

P-A cephalometric variables
Bizygomatic width (mm)	0.53 (1.33)	0.56 (0.82)	0.940^b
Lateronasal width (mm)	0.44 (1.08)	1.72 (0.97)	0.012^a
Maxillomandibulare width (mm)	−0.40 (1.79)	1.00 (1.93)	0.110^a
Maxillary width (mm)	0.83 (2.21)	2.32 (1.70)	0.112^b

3D model measurements
Upper intercanine width (mm)	3.59 (1.50)	2.85 (1.33)	0.255^a
Upper intermolar width (mm)	5.61 (2.46)	5.74 (0.92)	0.877^a
Palatal area (mm²)	267.53 (152.39)	369.63 (112.09)	0.105^a
Lower intercanine width (mm)	0.39 (0.79)	0.52 (0.88)	0.733^a
Lower intermolar width (mm)	0.22 (1.36)	0.07 (1.12)	0.789^a

Comparison of mini-screw-assisted rapid maxillary expansion in adolescents with different body mass indices: a prospective clinical study

Figures & Tables

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Figure 6

Comparison of initial (T0) lateral cephalometric between groups_

Changes (T1-T0) in Normal weight and overweight-obese groups_

Comparison of evaluated parameter changes (T1–T0) between groups_

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