Measuring the predictability of target set-up in customized lingual orthodontic treatment

This study was conducted to evaluate the accuracy of planned tooth movements in patients who were treated with completely customized lingual orthodontic system. In our study to assess the tip, torque, rotation, mesiodistal translation, buccolingual translation and vertical translation, three dimensional digital models were superimpositioned. The discrepancy between set-up and treatment result was measured in GeoMagic Control X program. In evaluating the findings of the study, IBM SPSS Statistics 22 software was employed for statistical analyzes. Total of 624 teeth were measured in both jaws. Buccolingual translational measurements were greater at the upper jaw (p: 0.046). For the rotation, tip, torque, buccolingual translation and mesiodistal translation discrepancy, posterior teeth were greater than anterior teeth with a statistically significant difference. For the upper and lower jaw, all teeth were positioned more retrusive except tooth number 16 in torque measurements. Vertical discrepancy measurements were statistically significant in tooth number 33 (p:0.034). Upper central incisors were positioned more extruded according to the set-up, lateral incisors were intruded,canines, premolars and molars were extruded. For the lower jaw, opposite results were obtained for every tooth group. For the buccolingual discrepancy measurements, teeth number 41 and 42 were positioned more buccally with a statistically significant difference (p:0.004, p:0.002). But tooth number 43 was positioned more lingually with p:0.023. Upper central incisors were positioned more buccally, all other teeth were positioned more lingually. In conclusion, the discrepancy difference was considerably low with all the measurements. Completely customized lingual orthodontic system is definitely a great choice for orthodontists and give accountable predictions in all tooth movements.