Results Achieved

• Posterior crossbite corrected
• Normal  overjet and overbite achieved
• Arches aligned and coordinated
• Alignment of both arches through derotation
• Arch form improved
• Aesthetic smile line was achieved

Total treatment Time

• 13 months

Number of aligners

• Maxillary: 32 + 29 = 61
• Mandibular: 32 + 29 = 61

Comments

• After U:32+28 and L:24+28 Invisalign First aligners, the anterior crossbite, posterior crossbite, narrow upper arch, and crowding were all corrected
• Adequate space prepared for the permanent upper canines and the gingival health around the lower left central incisor was stabilized
• Good aligner wear compliance and oral hygiene were maintained throughout Phase 1 treatment
• The Phase 1 treatment time was 13 months, not including the pre-treatment eruption monitoring and passive vacuformed appliance phase. Note: This extra step is not needed in patients who do not require an acclimation phase due to the medical condition.
• The final photos show the dentition 12-months post Phase I treatment
• The goals for Phase 2 are to close the remaining lower spaces, extrude the upper left canine, and de-rotate the premolars
• while maintaining a Class 1 bite relationship.

Retention

• Maxillary: Invisalign aligner
• Mandibular: Invisalign aligner