Table 3.

Demographics, clinical characteristics, and baseline dental data of the study group (n = 56)

	Variable	Category	Number of patients dentate during follow-up Total n = 51	Number of patients edentate during follow-upa Total n = 5
Demographics	Age, years	Mean (SD)	59 (8.5)	62 (5.4)
	Gender	Male/Female	32/19	4/1
Clinical characteristics	Tumor site	Oral cavity	25	1
		Oropharynx	26	4
	T-classification	T1	10	1
		T2	17	2
		T3	6	0
		T4	17	2
		Not reported	1	0
	N-classification	N0	17	1
		N1	7	0
		N2	25	4
		N3	1	0
		Not reported	1	0
	Cumulative IMRT dose	Median [IQR]	70 [66–70]	70 [70–70]
	Frequency of IMRT	5/week	42	3
		6/week	9	2
	Primary IMRT		10	1
	Postoperative IMRT		14	0
	Primary CHIMRT		17	4
	Postoperative CHIMRT		10	0
	Chemotherapy type	Carboplatin/5-FU	18	4
		Cisplatin	7	0
		Cetuximab	2	0
	Wound closure	Primary	9	0
		Skin graft/flap	15	0
	Self-reported smoking	Yes/In the past/No/NR	16/17/17/1	4/0/1/0
	Alcohol consumption	Yes/No	40/11	3/2
Baseline dental data	Number of teeth	Median [IQR]	24 [18–27]	11 [8.5–17]
	Plaque score	Median [IQR]	50 [25–75]	70 [45–80]
	Bleeding score	Median [IQR]	30 [20–60]	70 [33–95]
	PISA	Median [IQR]	349 [131–863]	533 [170–1509]
	DMFS	Median [IQR]	77 [60–102]	118 [88–120}

SD standard deviation, IQR inter quartile range, IMRT intensity modulated radiation therapy, CHIMRT intensity modulated radiation therapy with chemotherapy, DMFS decayed missing filled surfaces. The range of scores is 0–128, NR not reported

^aAfter dental screening and pre-radiation treatment of oral foci, five patients needed a full mouth clearance