From: Randomized controlled trial on the effectiveness of absorbable collagen sponge after extraction of impacted mandibular third molar: split-mouth design
Variable
N
Patients
31
Age (years)
23.52 (±7.14)
Gender
Male
15
Female
16
Impaction depth
Level A
12
Level B
14
Level C
5
Ramus relationship
Class I
Class II
13
Class III
3
Angulation
Disto-angular
2
Horizontal
10
Mesio-angular
18
Vertical
1