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Table 2 Comparison of Outcome Variables of Pain, Swelling, and Mouth Opening

From: How effective is collagen resorbable membrane placement after partially impacted mandibular third molar surgery on postoperative morbidity? A prospective randomized comparative study

 

SC

PC

MBPC

 

SC / PC

SC / MBPC

PC / MBPC

 

Mean (STD)

Mean (STD)

Mean (STD)

p

p

p

p

Objective Measurements

 Mouth opening1 (%)

  Day 2

68.76 (1.07)

60.38 (1.88)

59.76 (3.26)

0.000*

0.000*

0.000*

0.029*

  Day 7

75.82 (22.82)

68.86 (13.49)

64.49 (14.90)

0.093

0.155

0.062

0.238

 Swelling2 (mm)

  Day 2

9.15 (4.31)

14.82 (11.05)

18.43 (16.31)

0.015*

0.046*

0.005*

0.403

  Day 7

2.72 (1.34)

5.96 (4.66)

8.17 (10.62)

0.001*

0.000*

0.002*

0.656

Subjective Measurements

 Pain (VAS)

  Day 1

4.91 (3.32)

5.36 (3.01)

5.94 (2.16)

0.191

0.614

0.160

0.225

  Day 2

3.51 (1.91)

4.14 (3.26)

4.97 (2.51)

0.104

0.363

0.014*

0.275

  Day 3

2.40 (2.17)

2.76 (2.61)

3.01 (1.98)

0.294

0.455

0.131

0.363

  Day 4

1.35 (1.42)

2.26 (2.87)

2.21 (2.12)

0.256

0.445

0.084

0.476

  Day 5

0.70 (0.88)

1.40 (1.93)

1.27 (1.39)

0.226

0.194

0.097

0.814

  Day 6

0.50 (0.75)

0.92 (1.64)

0.61 (0.86)

0.824

0.541

0.707

0.804

  Day 7

0.23 (0.43)

0.75 (1.88)

0.37 (0.69)

0.892

0.734

0.627

0.969

 Swelling (VAS)

  Day 1

1.67 (1.96)

3.05 (2.91)

5.80 (1.89)

0.000*

0.184

0.000*

0.000*

  Day 2

1.91 (2.20)

4.05 (3.71)

6.82 (2.27)

0.000*

0.019*

0.000*

0.003*

  Day 3

1.23 (1.54)

3.93 (3.72)

6.72 (2.22)

0.000*

0.004*

0.000*

0.006*

  Day 4

0.72 (1.05)

3.10 (3.28)

5.03 (2.10)

0.000*

0.002*

0.000*

0.013*

  Day 5

0.49 (0.67)

2.41 (2.55)

3.39 (1.72)

0.000*

0.005*

0.000*

0.037*

  Day 6

0.16 (0.38)

1.29 (1.52)

1.99 (1.33)

0.000*

0.001*

0.000*

0.019*

  Day 7

0.07 (0.18)

0.54 (0.83)

0.95 (0.95)

0.000*

0.015*

0.000*

0.045*

  1. *: Significant, p < 0.05
  2. 1 Mouth opening was measured by taking the maximum distance between the maxillary and mandibular central incisors using a caliper. Mouth opening was consider as the percentage difference between the two measurements
  3. 2 Swelling was measured by a tape measuring method and two measurements were taken between the tragus to lip junction and the distance between the external corner of the eye to the mandibular angle. Swelling was considered as the difference between the two measurements