From: The application of 3D-printed oral stents in intensity-modulated radiotherapy for oropharyngeal cancer and their dosimetric effect on organs at risk
Site
Stent
Bottle
Control
P value
Grade 0
Grade 1–2
Grade 3
Grade3
Upper cheek
1
16
3
0
13
7
11
9
P > 0.05
Hard palate
6
12
2
14
5
P < 0. 05
Soft palate