Table 3: Cephalometric analysis- Case 3
Since the patient suffered from amelogenisis imperfecta, a potential
re-treatment with braces was not an option. CAT with 20 sets of aligners
were planned using dual attachments on the labial and lingual surfaces
to intrude the upper posterior teeth and extrude the anterior teeth.
The conventional attachments were also placed on the labial and lingual
surfaces (upper labial attachments: #17, #15, #12, #11, #21, #22,
#25, #27; upper palatal attachments: #13, #12, #11, #21, #22,
#23; lower labial attachments: #37, #35, #33, #32, #42, #43,
#45, #47).
Optimized attachments were placed on the labial surfaces of #31 and
#41. (Fig. 20)