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Figure 1: OPG image of a child depicting the various developmental stages of mandibular teeth scored according to Demirjian's criteria. D - The crown formation is completed down to the cemento-enamel junction; beginning of root formation is seen in the form of a spicule, E - The root length is less than the crown height, F - The root length is equal to or greater than the crown height, G - The walls of the root canal are parallel and are still partially open

Figure 1: OPG image of a child depicting the various developmental stages of mandibular teeth scored according to Demirjian's criteria. D - The crown formation is completed down to the cemento-enamel junction; beginning of root formation is seen in the form of a spicule, E - The root length is less than the crown height, F - The root length is equal to or greater than the crown height, G - The walls of the root canal are parallel and are still partially open