GT – Class III mild crowding, open bite, anterior crossbite and crossed over central incisors QST Fixed Appliances Treatment time 7 months
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GT – Class III mild crowding, open bite, anterior crossbite and
crossed over central incisors!
QST Fixed Appliances!Treatment time 7 months!
History!
GT was a 41 year old male who did not like his upper and lower teeth. He preferred to have
the quickest treatment possible and only wanted the front teeth straightened!
!
Extra-oral examination!
Mild class III skeletal base!
Average Frankfort-Mandibular Planes Angle!
Average nasolabial angle!
Competent lips!
No facial asymmetry!
Intra-oral examination!
• Class III incisors!• 16, 15, 25, 36 previously extracted!• Reduced overjet and anterior open bite!• Crossed over central incisors!• Crowding 3mm (lower) and 2mm (upper)!• Anterior crossbite 12, 11 and 22!
Summary!
GT did not like his upper and lower teeth. He presented with a class III incisor
relationship on a skeletal III base, with reduced overjet and anterior open bite.
There was an anterior crossbite. There was mild crowding in upper and lower labial
segments. Upper and lower central incisors were crossed over.!
Treatment Options!
1. Comprehensive orthodontic treatment to correct all features including the posterior occlusion and anterior open bite. Estimated treatment time 18-24 months, however the patient was only interested in anterior alignment!
2. Q Fixed Appliances. Estimated treatment time 6-7 months. Accept the anterior open bite and leave the posterior occlusion largely unaffected!
Treatment Plan!
1. Q fixed appliances to align the upper and lower anterior teeth !
2. Accept the anterior open bite and posterior occlusion!
3. Indefinite retention with fixed and removable retainers!
Mid treatment (in 0.018” NiTi)!!!!
• Power chain placed 35-45 to close lower residual spacing!
Post-orthodontics!
Post-orthodontic treatment plan!
1. Minimal contouring of upper and lower incisors (patient declined composite bonding)!
2. Whitening (patient declined at this time)!
Summary!
Well aligned upper and lower anterior dentition, achieved within the given timeframe to the patient’s satisfaction!!
Treatment duration 7 months!
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