[Table/Fig-3]:

Developmental stages according to demirjian’s method

Stage	Radiographic appearance		Mean age in years according to stage
			Male	Female
Stage A	Calcification of single occlusal points without fusion of different calcifications.		9.63	9.46
Stage B	Fusion of mineralization points: the contour of the occlusal surface is recognizable		10.65	11.02
Stage C	Enamel formation has been completed at the occlusal surface, and dentine formation has commenced.the pulp chamber is curved, no pulp horns visible.		13.05	11.96
Stage D	Enamel formation has been completed to the level of amelocemental junction. Root formation has commenced. The pulp horns are beginning to differentiate, but the walls of pulp chamber remain curved.		14.63	14.91
Stage E	The root length remains shorter than the crown height. The walls of pulp chamber are straight, and the pulp horns have become more differentiated than in the previous stage. In molars the radicular bifurcation has commenced to calcify.		17.11	17.33
Stage F	The walls of pulp chamber now form an isosceles triangle, and the root length is equal to or greater than the crown height. In molars the bifurcation has developed sufficiently to give the roots a distinct form.		18.15	19.33
Stage	Radiographic appearance		Male	Female
Stage G	The walls of root canal are now parallel, but the apical end is partially open. In molars, only the distal root is separated.		19.60	20.22
Stage H	The root apex is completely closed (distal root in molars). The periodontal membrane surrounding the root and apex is uniform in width throughout		20.86	21.60