Efficiency Of Different Intraoral Scanning Techniques In Orthodontic Patients Before And After Brackets Positioning: A Cross Sectional Study

In this study two scanners will be utilized Medit i500 and Trios 3. For each scanner three techniques will be used at two different interventions. One before brackets positioning and the other after bracket positioning. American orthodontics ROTH prescription, 0.022 slot metal brackets will be positioned using direct bonding technique.

Three different scanning techniques will be used: buccopalatal technique, S-shaped technique and palatobuccal technique. The buccopalatal technique (A) involves scanning the arch top side starting from the left second molar then run longitudinally to the contra-lateral one. Then go to the buccal side scan from this right side to the contra-lateral side and then palatal scan. Palatal scan done in two steps first was with counterclockwise movement along the palatal vault and then longitudinal movement in postro-anterior direction.

The S-shaped technique (B) involves scanning the arch starting from the palatal side of the left second molar then moving the scanner tip in alternating palatobuccal and buccopalatal S-shaped movement along the arch to the contra-lateral side. Then scanning the mid area of the palate by longitudinal movement in postro-anterior direction.

The palatobuccal technique (c) done by scanning the arch top side first starting from the left second molar runs longitudinally to the contralateral side. Then start palatal scanning by moving the scanner tip with circular movement in a clockwise direction across the palatal vault from the right-side second molar then along the palate to the contralateral second molar. Then the same circular scanning but in the counterclockwise direction to record the remaining part of the palate staring from the left second molar to the contralateral one. The buccal scan will follow starting from the right second molar then run longitudinally to the contralateral side.