[Retracted] Dosimetric Comparison between Volumetric Modulated Arc Therapy (VMAT) and Intensity-Modulated Radiotherapy (IMRT) for Dental Structures of Head and Neck Cancer Patients

Table 4

Mean of the average and the maximum dosages received by tooth types of HNC patients.

		IMRT		VMAT
		Mean (median) average	Mean (median) maximum	Mean (median) average	Mean (median) maximum
Nasopharynx	Mandibular teeth
	Anterior teeth	22.09 ± 3.38^a	31.26 ± 5.63^a	26.60 ± 6.87^a	31.65 ± 7.19^a
	Premolars	29.12 ± 4.86^b	36.27 ± 4.59^b	31.31(6.06)^a	38.23 ± 7.56^b
	Molars	38.22 ± 5.33c	54.29 ± 6.76c	40.10 ± 6.52^b	56.65 ± 8.68c
	Maxillary teeth
	Anterior teeth	27.73 ± 4.61^a	38.05 ± 5.89^a	25.88 ± 7.19^a	34.44 ± 8.16^a
	Premolars	35.86 ± 4.12^b	43.11 ± 5.13^b	31.88 ± 7.06^b	40.32 ± 7.35^b
	Molars	45.20 ± 4.82^c	66.23 ± 8.11^c	43.51 ± 5.51^c	63.84 ± 6.55^c
Oral cavity	Mandibular teeth
	Anterior teeth	48.87(15.00)^a	59.60(15.82)^a	52.04 ± 13.57^a	61.39 ± 12.76^a
	Premolars	51.04(8.64)^a	61.83(12.19)^a	54.03 ± 12.62^a	63.72 ± 11.72^a
	Molars	52.83(16.53)^a	63.44 ± 8.92^a	55.01 ± 11.39^a	63.25(15.25)^a
	Maxillary teeth
	Anterior teeth	18.91 ± 8.67^a	30.06 ± 10.21^a	25.88 ± 12.85^a	34.77 ± 13.94^a
	Premolars	23.89 ± 11.54^ab	34.04 ± 11.35^a	29.54 ± 12.70^a	41.35 ± 15.28^a
	Molars	29.16 ± 13.97^b	45.47 ± 13.37^b	35.88 ± 14.01^b	53.13 ± 14.87^b
Oropharynx	Mandibular teeth
	Anterior teeth	26.21 ± 11.40^a	37.16 ± 15.20^a	27.93 ± 13.68^a	35.61 ± 17.15^a
	Premolars	34.44 ± 14.14^a	44.99 ± 12.39^a	30.35(20.50)^a	44.60 ± 15.11^a
	Molars	43.08 ± 11.64^b	62.18 ± 9.47^b	42.82 ± 11.17^b	61.90 ± 10.66^b
	Maxillary teeth
	Anterior teeth	15.88 ± 8.42^a	24.39 ± 13.92^a	18.92 ± 12.59^a	27.75 ± 19.60^a
	Premolars	21.16 ± 12.97^ab	29.16 ± 13.75^a	22.51 ± 15.31^a	31.17 ± 17.84^a
	Molars	29.11 ± 15.06^b	45.20 ± 16.92^b	30.83 ± 19.36^b	47.50 ± 22.89^b
Larynx	Mandibular teeth
	Anterior teeth	20.45 ± 5.22^a	29.68 ± 6.46^a	20.34(11.67)^a	27.27(12.10)^a
	Premolars	26.68 ± 6.71^b	33.26 ± 5.96^a	23.77(8.70)^a	32.03 ± 9.99^a
	Molars	32.34 ± 6.91^c	44.32 ± 11.60^b	32.00 ± 8.27^b	46.00 ± 11.02^b
	Maxillary teeth
	Anterior teeth	17.49 ± 6.73^a	24.44 ± 9.66^a	15.31 ± 7.59^a	19.71(13.20)^a
	Premolars	20.21 ± 8.92^ab	27.42 ± 10.44^a	17.79 ± 8.35^ab	22.37 ± 9.32^a
	Molars	25.69 ± 9.46^b	37.98 ± 14.59^b	22.28 ± 9.61^b	32.54 ± 13.50^b

Different lowercase letters in the columns represent significant differences () (one-way ANOVA or the Kruskal-Wallis test). In each column, we compared tooth types of mandibular teeth (maxillary teeth) themselves.