<prompt> Most common unfavourable sequelae of serial extraction:Disto-axial inclination of canineResidual space at the extraction siteMesio-axial inclination of second premolarIncrease in overbite  <response>: Early extraction of the buccal teeth and uprighting of incisors can result in deepening of the bite. This can be corrected with bite plane.Ref: textbook of orthodontics gowrishankar 2nd edition page 533 