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Asymmetric extractions in a patient with a hopeless maxillary central incisor, followed by treatment with mini-implant anchorage
Ist Teil von
American journal of orthodontics and dentofacial orthopedics, 2018-05, Vol.153 (5), p.716-729
Ort / Verlag
United States: Elsevier Inc
Erscheinungsjahr
2018
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Premolar extraction is 1 option for treatment of patients with malocclusion and severe crowding or protrusion. When the patient has missing or hopeless teeth other than premolars, it is possible to consider removal of those teeth to use the space to decrease crowding. A 15-year-old girl sought treatment for severe crowding. She had already lost her maxillary right first premolar as a result of caries 1 year previously and had a hopeless maxillary right central incisor. Her mandibular left first molar still caused discomfort even after endodontic treatment. Extractions of the maxillary right central incisor and mandibular right first premolar and left first molar were chosen to resolve the occlusion problems. Orthodontic mini-implants were placed to translocate the maxillary left central incisor across the midpalatal suture to use the space in the maxillary right quadrant to relieve the crowding. Although a different extraction option was used in each quadrant, the final occlusion was acceptable. After debonding, porcelain crowns were placed on the anterior teeth to improve esthetics. The treatment result remained stable after 2 years of retention.
•Orthodontic mini-implants can be reliable anchorage in asymmetric extraction cases.•Patient was treated nicely without midline problem with 2 teeth extracted in 1 quadrant.•With mini-implant anchorage, careful treatment plan is needed because of different biomechanical characteristics.