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ePaper created 2017-03-17, 13:11:17 | version 1.38.0
| case report aligner application Fig. 2a Fig. 2b Fig. 2c Fig. 2d Fig. 3a Fig. 3b Fig. 3c Fig. 3d Fig. 4a Fig. 4b Fig. 4c Fig. 4d flaring of the incisor teeth. Since TADs also cause trauma, a RAP phenomenon is generated, which causes an increase in the rate of tooth movement. The bite opening led to the increase in the upper in- cisor to NA from 12 degrees to 22 degrees (Figs. 7a & b). This led to minor spacing appearing between the anteriors. Clear aligners have been shown to provide good control where tipping movements are used5 and such controlled movements led to a near ideal finish for this case. The K Clear appliance was selected in this case based upon the variable thick- ness used to achieve different movements in a pre- dictable manner and our experience with it. A bonded retainer is a must for all adult cases. A 0.175 coaxial wire was used for this purpose and bonded to all incisors individually. Retroclined inci- sors have a high tendency to relapse, especially when not supported by the mandibular incisors, hence the night time use of a K Clear retainer. The settling in this case was excellent and that sometimes is one of the pit falls of treating cases with aligners5. Fig. 5b Fig. 5a Fig. 6a Fig. 6b Fig. 6c Fig. 6d 22 ortho 1 2017