The rate of Orthodontic tooth movement affects the efficacy and time duration of the treatment. One of the key factors, during the initial alignment phase, is the amount of the force that the arch-wire applies to the dentition. The amount of the applied force and the rate of tooth movement are directly proportional to the frictional resistance between the arch wire and bracket. The quality and degree of resistance is related to the physical characteristics of the arch wire, bracket material, arch wire dimensions, and the type of arch wire ligation. The estimated rate of tooth movement is about 0.35 to 2.04 mm per month, which is influenced by various factors and variables including the biological response of the individual to orthodontic forces, the complexity of the case, treatment mechanics and patient compliance throughout the course of treatment .

To compare the alignment efficiency and pain experience of Mico-one self-ligating and conventional ligating MBT pre-adjusted brackets in the initial alignment stage of patients undergoing orthodontic treatment.CONVENTIONAL MBT BRACKETS: In conventional brackets elastic ligatures or metal ties are used to ligate the wire in the bracket slot. 2. SELF-LIGATING BRACKETS: Self-ligating brackets like conventional braces are placed relatively the same way.

The exception is that self-ligating braces don't use elastics, or metal ties. Instead it has special clips or brackets with a spring-loaded door. The brackets while maintaing pressure on the archwire, help move the teeth along it at a steady pace .[9] 3 .ALIGNMENT EFFICIENCY Movement of the teeth measured at four months interval. Scoring method involves measuring the linear distance between anatomical contact points between maxillary and mandibular incisors from adjacent tooth anatomical points. (Little's irregularity index)

4.PAIN Unpleasant sensory and emotional experience associated with tooth movement will be measured as a mean using the VAS at 4 hours, 24 hours, day 3, day 7, 1 st Month, 2 nd Month, 3 rd Month and 4 th Month.

Inclusion Criteria

• Patients with Non extraction orthodontic treatment plan
• Crowding of 3 to 6 mm according to Little's irregularity index
• Both male and female patients
• 14-20 years of age.
• All permanent teeth present up to first permanent molar

Exclusion Criteria:

• Poor oral hygiene
• Systemic disease
• Patients with periodontally compromised teeth
• Patient requiring Orthognathic surgery to correct skeletal discrepancies
• Patients taking medications, like NSAIDs or other anti-inflammatory drugs
• Cleft lip or palate
• Hypodontia, or Hyperdontia

To compare the alignment efficiency and pain experience of Mico-one self-ligating and conventional ligating MBT pre-adjusted brackets in the initial alignment stage of patients undergoing orthodontic treatment.

Interventional or control group will be selected randomly through sealed envelope by an independent researcher not involved in the study.