title: Patient with oligodontia treated with a miniscrew for unilateral mesial movement of the maxillary molars and alignment of an impacted third molar.
abstract: This report describes the treatment of a 20-year-old woman with a dental midline deviation and 7 congenitally missing premolars. She had retained a maxillary right deciduous canine and 4 deciduous second molars, and she had an impacted maxillary right third molar. The maxillary right deciduous second molar was extracted, and the space was nearly closed by mesial movement of the maxillary right molars using an edgewise appliance and a miniscrew for absolute anchorage. The miniscrew was removed, and the extraction space of the maxillary right deciduous canine was closed, correcting the dental midline deviation. After the mesial movement of the maxillary right molars, the impacted right third molar was aligned. To prevent root resorption, the retained left deciduous second molars were not aligned by the edgewise appliance. The occlusal contact area and the maximum occlusal force increased over the 2 years of retention. The miniscrew was useful for absolute anchorage for unilateral mesial movement of the maxillary molars and for the creation of eruption space and alignment of the impacted third molar in a patient with oligodontia.
authors.affiliation: Field of Developmental Medicine, Health Research Course, Department of Orthodontics, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
authors.forename: Aya
authors.initials: A
authors.lastname: Maeda
authors.forename: Yoko
authors.initials: Y
authors.lastname: Sakoguchi
authors.forename: Shouichi
authors.initials: S
authors.lastname: Miyawaki
mesh_terms: D000848:Anodontia / Q000150:complications* / Q000628:therapy; D001641:Bicuspid / Q000473:pathology*; D001863:Bone Screws; D005146:Facial Asymmetry / Q000209:etiology* / Q000628:therapy; D005260:Female; D006801:Humans; D008437:Maxilla; D008644:Mesial Movement of Teeth; D008963:Molar; D008964:Molar, Third / Q000473:pathology*; D014087:Tooth Movement Techniques / Q000295:instrumentation*; D014095:Tooth, Impacted / Q000628:therapy*; D055815:Young Adult