Abstract
Aims: This study aimed to compare the effects of two different anchorage systems for molar distalization. Materials and Methods: The sample consisted of two groups, Buccal Coil spring with Nance button as anchorage and Buccal Coil spring with simulated Screw as anchorage. Upper typodont arch of class II division I was used and the appliances were activated to deliver 200 gram of distalization force. Pre and postoperative digital images were taken and analyzed using Autodesk AutoCAD software™. For each group seven parameters were measured and compared. A significance value of 0.05 was predetermined. Results: Significant difference was found between the two groups in the vertical change, tipping change of the first molar, vertical change, mesial movement of the first premolar. Insignificant difference in first molar rotation, molar distalization rate and premolar tipping change. Conclusions: Maxillary molar distalization with minimal effects on anchoring teeth, molar tipping and vertical position change could be achieved with Buccal Coil spring with Screw distalization appliance.
