Comparison of bracket transfer accuracy between two indirect bonding techniques

Objectives Compare the bracket transfer accuracy between two IDB techniques; glue gun material and the conventional vacuum trays depending on the technology of IOSs (Trios 3). Patients and methods Thirty-two patients were randomly divided into two groups of 19 each (group I: glue gun tray, group II: vacuum tray). The brackets were placed in their predetermined positions by reference, the working model with attached brackets was scanned with intraoral scanner images (image 1). After bonding, scanning for the patient teeth with bonded brackets was performed (image 2). Image 1 and image 2 were superimposed to compare the transfer accuracy of both methods. A 5% significance level and χ2 test were used. Results No statistically significant difference was found between the two groups in the transverse and horizontal planes. In the vertical plane, group I was statistically significant higher (P ≤ 0.05) than group II. Conclusion The indirect bonding transfer process with glue gun trays resulted in bracket placement with high positional accuracy and a mild distal and gingival bias for all teeth groups.