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Correction of a mutilated dentition with mini-implants as anchorage
1Orthodontic Clinic, Department of Orthodontics, Seoul National University Dental Hospital, Seoul, Korea.
Summary
This orthodontic case study demonstrates successful treatment of a 15-year-old boy with a mutilated dentition. Mini-implants and TPA corrected molar extrusion and scissors-bite, achieving stable results.
Area of Science:
- Orthodontics
- Dentalomechanics
Background:
- Adolescent patient with a mutilated dentition presenting complex malocclusion.
- Maxillary first molar extrusion due to missing mandibular first molar.
- Lingual tilting, rotation, and scissors-bite of mandibular second molars.
Observation:
- Severe scissors-bite on both left and right second molars, more pronounced on the left.
- Mutilated dentition requiring space management and alignment correction.
Findings:
- Successful 3-mm intrusion of the maxillary left first molar using mini-implants and Transpalatal Arch (TPA) with hooks.
- Mesial movement of the mandibular left second molar into the first molar space.
- Protraction of the mandibular left second molar and replacement by the third molar.
- Correction of the scissors-bite in both second molars.
Implications:
- Demonstrates the efficacy of mini-implants and TPA in managing complex molar discrepancies.
- Highlights a viable treatment strategy for restoring function and occlusion in mutilated dentition.
- Achieved stable orthodontic treatment results over a 45-month active phase and 2-year follow-up.
