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Table 7  Comparison of EMG activity of SAOB before and after receiving OMT

From: Electromyographic features and efficacy of orofacial myofunctional treatment for skeletal anterior open bite in adolescents: an exploratory study

 

TA

MM

DA

Before

μV

After

μV

T

μV

P

Before

μV

After

μV

T

μV

P

Before

μV

After

μV

T

μV

P

REST

1.60 (1.25, 2.30)a

1.45 (1.20, 1.85)

− 0.32 ± 0.87b

0.147

0.95 (0.80, 1.40)

1.45 (1.20, 1.85)

0.41 ± 0.78

0.06

0.90 (0.75, 1.60)

1.00 (0.70, 1.30)

− 0.03 ± 0.27

0.950

ICP

37.2 (31.5, 58.8)a

62.1 (51.2, 84.7)

25.4 (7.20, 31.9)

0.001

26.3 ± 12.2b

60.6 ± 37.6

34.4 ± 30.2

0.003

4.49 ± 1.94

8.68 ± 3.88

4.19 ± 3.54

 < 0.001

LIP

1.85 (1.30, 2.65)a

1.70 (1.15, 2.10)

− 0.41 ± 0.98 b

0.132

1.40 (0.95, 1.95)

1.45 (0.90, 1.55)

− 0.10 (− 0.55, 0.15)

0.158

1.80 (1.30, 3.40)

1.35 (0.90, 1.55)

− 1.05 ± 1.36

0.005

SWA

2.45 (1.40, 5.05)a

3.00 (1.60, 6.40)

0.75 ± 3.63b

0.820

3.65 (2.15, 5.45)

3.40 (2.05, 5.15)

− 0.15 ± 2.78

1.000

8.70 (6.95, 11.05)

7.80 (5.85, 16.5)

− 0.60 (− 2.30, 1.10)

0.629

 

UO

ME

Before

μV

After

μV

T

μV

P

Before

μV

After

μV

T

μV

P

REST

1.10 (1.00, 1.40)

1.10 (0.80, 1.50)

0.00 (− 0.30, 0.30)

0.916

5.20 (1.80, 7.10)

2.50 (1.65, 4.90)

− 0.80 (− 2.70, − 0.30)

0.002

ICP

2.30 (1.90, 2.90)

2.20 (1.80, 2.90)

− 0.20 (− 0.60, 1.00)

0.489

3.90 (3.05, 8.10)

6.15 (3.95, 12.1)

0.45 (− 1.30, 3.00)

0.233

LIP

15.5 (12.4, 18.7)

3.20 (1.80, 8.10)

− 10.4 ± 3.53

0.001

18.8 ± 8.51

9.86 ± 4.56

− 8.97 ± 6.49

0.008

SWA

23.7 (16.8, 26.5)

10.4 (6.90, 18.4)

− 10.1 ± 8.13

0.002

34.8 ± 18.8

20.6 ± 12.6

− 14.3 ± 8.76

 < 0.001

  1. Wilcoxon signed rank test was used for skew distribution data, t-test was used for normal distribution data, α = 0.05
  2. TA, temporal muscle; MM, masseter muscle; DA, anterior digastric; UO, upper orbicularis; ME, mentalis muscle; REST, mandibular rest; ICP, maximum voluntary contraction in the intercuspal position; LIP, lip sealing; SWA, swallowing
  3. aMedian (25%, 75%)
  4. bMean ± standard deviation