Table 3. Agreement of duplicate probing depth measurements for intra-examiner A, intra-examiner B and inter-examiner A-B at 6 specified tooth surfaces (mesiofacial, midfacial, distofacial, mesiolingual, midlingual, distolingual) (%) .

Variation (mm)		Mesiofacial
	A	B	A-B
±0.0	52.1	46.3	43.2
±0.5	83.4	92.7	87.1
±1.0	99.5	100.0	99.1
±1.5	100.0	100.0	99.8
±2.0	100.0	100.0	100.0
		Mid-facial
±0.0	69.6	75.1	65.9
±0.5	93.5	97.7	94.7
±1.0	97.7	100.0	98.6
±1.5	98.6	100.0	99.5
±2.0	100.0	100.0	100.0
		Distofacial
±0.0	45.4	52.3	40.2
±0.5	83.8	93.1	76.1
±1.0	99.5	100.0	97.9
±1.5	100.0	100.0	100.0
±2.0	100.0	100.0	100.0
		Mesiolingual
±0.0	46.1	55.0	41.2
±0.5	81.1	89.4	80.4
±1.0	100.0	100.0	98.4
±1.5	100.0	100.0	100.0
±2.0	100.0	100.0	100.0
		Mid-lingual
±0.0	65.3	69.6	58.5
±0.5	93.0	98.2	90.0
±1.0	99.5	100.0	99.3
±1.5	100.0	100.0	100.0
±2.0	100.0	100.0	100.0
		Distolingual
±0.0	55.2	49.1	41.4
±0.5	78.8	84.1	76.7
±1.0	99.5	99.5	97.9
±1.5	100.0	100.0	99.5
±2.0	100.0	100.0	100.0