Development and Evaluation of a Pillow to Prevent Snoring Using the Cervical Spine Recurve Method

Table 1

Oropharynx area according to the angle of expansion.

Location	Expansion angle (°)	The angle formed by the body of the mandible and the cervical vertebra No. 7 (°)	Oropharynx area (mm^2)	Increase compared to origin (times)
Origin point ()	0	35.0	573	0
1 ()	5.03	40.0	765	1.33
2 ()	5.01	45.0	798	1.39
3 ()	4.95	50.0	886	1.54
4 ()	4.99	55.0	935	1.63
5 ()	5.02	60.0	987	1.72