The Additional Information of Bitewing Radiographs in the Detection of Established or Severe Dentinal Decay in 14-Year Olds: A Cross-Sectional Study in Low-Caries Population

Table 2

Number of ICDAS 0–2 surfaces in both clinical examination and with BW included and number of surfaces with yield from radiographs.

	ICDAS 0–2^a in both clinical exam and BW	ICDAS 0–2^a in clinical exam, ICDAS 4–6^c in BW (yield 1)	ICDAS 3^b in clinical exam, ICDAS 4–6^c in BW (yield 2)
	n (%)^1	n (%)^1	n (%)^2
1st premolar
Distal	1324 (96.5)	12 (0.9)	0 (0.0)
2nd premolar
Mesial	1324 (97.0)	5 (0.4)	0 (0.0)
Distal	1269 (93.3)	18 (1.3)	0 (0.0)
1st molar
Occlusal	963 (89.0)	114 (10.5)	45 (39.5)
Mesial	1110 (88.6)	40 (3.2)	22 (19.3)
Distal	1308 (93.7)	11 (0.8)	0 (0.0)
2nd molar
Occlusal	1032 (90.9)	98 (8.6)	42 (33.9)
Mesial	1324 (96.0)	3 (0.2)	0 (0.0)

1% of surfaces registered clinically ICDAS 0–2.
2% of surfaces registered clinically ICDAS 3.
aICDAS 0–2, WHO 0, 1.
bICDAS 3, enamel lesion with a clinically detectable loss of substance.
cEstablished or severe dentine decay = ICDAS 4–6, dentine caries obviously spreading in the dentine.