Accuracy of invisalignA (R) treatments in the anterior tooth region

作者：Krieger Elena^*; Seiferth Joerg; Saric Ivana; Jung Britta A; Wehrbein Heinrich

来源：Journal of Orofacial Orthopedics, 2011, 72(2): 141-149.

DOI：10.1007/s00056-011-0017-4

• Invisalign (R)
• ClinCheck (R)
• Anterior crowding

To analyse (a) to what extent the pretreatment model at the beginning of the treatment corresponds to the initial position in the ClinCheckA (R) and (b) to what extent the predicted treatment result corresponds to the actual result of the therapy at the end of the treatment.
Pre- and posttreatment models as well as the initial and final position of the ClinCheck with a total of 35 patients aged between 15 and 59 were measured; all of whom were treated by using the InvisalignA (R) technology (InvisalignA (R), Align Technology, S.C., Calif., USA). The measurement of the initial and final models was conducted by using an electronic digital calliper rule, i.e. that of ClinCheckA (R) using the measurement tool ToothMeasureA (R) of InvisalignA (R) Software. The following parameters in the anterior region were measured: Overjet, Overbite, dental midline shift.
Pretreament models and the initial ClinChecksA (R) revealed slight deviations in the parameters overjet 0.08 mm (standard deviation (SD) 0.3), overbite 0.3 mm (SD 0.4) and dental midline deviation 0.1mm (SD 0.4). The final model and the final ClinCheckA (R) revealed larger deviations: the differences for the Overjet were on average 0.4 mm (SD 0.7), Overbite 0.9 mm (SD 0.9) and dental midline shift 0.4 mm (SD 0.5).
The IT-based transmission of mal-aligned teeth into the ClinCheckA (R) presentation provides sufficiently good accuracy. Tooth corrections in the vertical plane were more difficult to realize. A vertical overcorrection in the final ClinCheckA (R), a case refinement at the end of the treatment or additional measures (e.g. horizontal beveled attachments or vertical elastics) seems useful to achieve the individually intended therapeutic goal.

• 出版日期2011-3