Table 3.

Frequency of traits found in the occlusal surface of the molars on digital comparison

Tooth		Upper first molar (%)	Upper second molar (%)	Lower first molar (%)	Lower second molar (%)
Trait	Variant
Central groove	Straight	40	57.5	50	70
	Wavy	60	42.5	50	30
Grooves at triangular fossae	Branched	67.5	70	56.25	60
	Unbranched	32.5	30	43.75	40
Buccal and lingual/palatal groove configuration	Unbranched	2.5	22.5	6.25	30
	Only buccal groove branched	45	32.5	6.25	20
	Only lingual/palatal groove branched	15	10	50	20
	Both branched	37.5	35	37.50	30
Marginal grooves	Present	37.5	42.5	37.50	40
	Absent	62.5	57.5	62.50	60
Supplemental grooves	Absent	0	0	0	15
	Unbranched	7.5	12.5	75	30
	Branched	2.5	2.5	12.50	20
	Mixed	90	85	12.50	35
Uniqueness		90	90	75	85