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KMID : 0362720190570110654
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Journal of the Korean Dental Association
2019 Volume.57 No. 11 p.654 ~ p.663
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Mandibular second and third molar protraction with orthodontic mini-implants: case report
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Choi Sung-Kwon
Kang Kyung-Hwa
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Abstract
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This case report describes the management of a 30-year-old woman with hopeless mandibular first molars and right maxillary second premolar. The treatment plan included mandibular second and third molar protraction after extraction of mandibular first molars. Mini-implants were placed between roots of first and second premolar. Sliding mechanics with lever arm was used to prevent inclination of molars. A good functional occlusion was achieved in 38 months without clinically significant side effects. Most of the extraction space of mandibular first molar was closed by protraction of second and third molars. The skeletal Class II pattern was improved by counterclockwise rotation of mandible through reduction of wedge effect. Mandibular molar protraction with orthodontic mini-implants in adequate cases would be a great alternative to prosthetic implant and reduce the financial and surgical burden of patients.
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KEYWORD
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molar protraction, edentulous space closure, mini-implant
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