1. To compare maxillary canine retraction rate among conventional (labial) vs dual (simultaneous labial and palatal) force mechanics using labial fixed orthodontic appliances.
2. To assess the biomechanical effects of dual force vs single force In this study we will be using the most common method i.e. labial fixed appliances with different techniques to find a more faster and controlled method of canine retraction with least undesirable movements.
Lingual appliances are difficult to apply in normal practice but it has many advantages like faster movement of teeth, less anchorage loss so by using dual force we will have advantages of lingual appliance in combination with the conventional labial technique.