Does including the back teeth in braces help straighten the bite faster?

INTERVENTION: Intervention1: orthodontic treatment: all patients requiring fixed orthodontic treatment Control Intervention1: second molar bonding: one group in which second molar bonding done second group in which second molar is not bonded Control Intervention2: second molar not bonding: in one group second molar will not be bonded for leveling of curve of spee Control Intervention3: second molar bonding: in this group second molar will be bonded for leveling of curve of spee CONDITION: Health Condition 1: K039‐ Disease of hard tissues of teeth,unspecified PRIMARY OUTCOME: To compare the leveling of the curve of Spee in patients treated with ; second molar bonding versus those treated without second molar ; bonding.Timepoint: at the start of the treatment and 1 month after leveling of arch SECONDARY OUTCOME: To compare time required for leveling of the Curve of Spee in both the groups. ; To assess changes in the inclination of the lower incisors. ; To assess changes in the overjet & overbite.Timepoint: at the start of the treatment & 1 month after leveling of arch INCLUSION CRITERIA: 1.Permanent dentition with all second molars fully erupted. 2.Curve of Spee greater than or equal to 4mm. 3.Patients requiring orthodontic treatment with full fixed appliance. 4.No previous orthodontic treatment, no missing teeth due to caries or other reasons. 5.Crowding that does not exceed 5 mm in total, in lower jaw.