Table 2. Patient characteristics.

	Enrolled patients (No. = 22)
Variable	No. of patients (%)
Age (years)
Mean	50
Range	38–71
Gender
Male	20 (94.3%)
Female	2 (5.7%)
Subsite
Oral tongue	8 (36.4%)
Buccal mucosa	12 (54.5%)
Lip	1 (4.5%)
Gum	1 (4.5%)
Pathology
Squamous cell carcinoma	22 (100%)
Tumor stage
Stage I	1 (4.5%)
Stage II	1 (4.5%)
Stage III	7 (31.8%)
Stage IVA	13 (59.1%)
Stage IVB	0
Primary tumor stage
T1	2 (9.1%)
T2	5 (22.7%)
T3	7 (31.8%)
T4a	8 (36.4%)
T4b	0
Regional lymph node stage
N0	9 (40.9%)
N1	4 (18.2%)
N2a	0
N2b	8 (36.4%)
N2c	1 (4.5%)
N3	0
Adjuvant concurrent chemotherapy
Yes	20 (90.9%)
No	2 (9.1%)
RT dose
Median (range)	64 Gy (59.8–70 Gy)
Mean dose of
Right temporomandibular joint	24.8±16.9 (Gy)
Right masseter muscle	37.3±15.9 (Gy)
Right temporalis	19.8±14.0 (Gy)
Right medial pterygoid muscle	52.6±13.1 (Gy)
Right lateral pterygoid muscle	40.8±16.3 (Gy)
Right parotid gland	30.1±11.4 (Gy)
Left temporomandibular joint	28.3±21.6 (Gy)
Left masseter muscle	39.4±18.4 (Gy)
Left temporalis	21.2±16.9 (Gy)
Left medial pterygoid muscle	52.6±13.1 (Gy)
Left lateral pterygoid muscle	41.85±17.0 (Gy)
Left parotid gland	34.9±14.9 (Gy)