title: Replacement of a first molar and 3 second molars by the mesial inclination of 4 impacted third molars in an adult with a Class II Division 1 malocclusion.
abstract: This case report presents the successful replacement of 1 first molar and 3 second molars by the mesial inclination of 4 impacted third molars. A woman, 23 years 6 months old, had a chief complaint of crowding of her anterior teeth and linguoclination of a second molar on the left side. The panoramic radiographic images showed that the maxillary and mandibular third molars on both sides were impacted. Root resorption on the distal surfaces of the maxillary second molars was suspected. The patient was given a diagnosis of Angle Class II Division 1 malocclusion with severe crowding of the anterior teeth and 4 impacted third molars. After we extracted the treated maxillary second premolars and the second molars on both sides, the treated mandibular second premolar and the second molar on the left side, and the root canal-filled mandibular first molar on the right side, the 4 impacted third molars were uprighted and formed part of the posterior functional occlusion. The total active treatment period was 39 months. The maxillary and mandibular third molars on both sides successfully replaced the first and second molars. The replacement of a damaged molar by an impacted third molar is a useful treatment option for using sound teeth.
authors.affiliation: Assistant professor, Department of Orthodontics, Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tomonari
authors.affiliation: Assistant professor, Department of Orthodontics, Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
authors.forename: Takakazu
authors.initials: T
authors.lastname: Yagi
authors.affiliation: Assistant professor, Department of Orthodontics, Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
authors.forename: Takaharu
authors.initials: T
authors.lastname: Kuninori
authors.affiliation: Postgraduate student, Department of Orthodontics, Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ikemori
authors.affiliation: Professor and department chair, Department of Orthodontics, Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan. Electronic address: miyawaki@dent.kagoshima-u.ac.jp.
authors.forename: Shouichi
authors.initials: S
authors.lastname: Miyawaki
mesh_terms: D000328:Adult; D001641:Bicuspid / Q000473:pathology; D001863:Bone Screws; D002508:Cephalometry / Q000379:methods; D005260:Female; D006801:Humans; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D008904:Miniaturization; D008963:Molar / Q000473:pathology*; D008964:Molar, Third / Q000473:pathology*; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation; D010347:Patient Care Planning; D011862:Radiography, Panoramic; D012391:Root Resorption / Q000628:therapy; D014081:Tooth Extraction / Q000379:methods; D014087:Tooth Movement Techniques / Q000295:instrumentation / Q000379:methods*; D014095:Tooth, Impacted / Q000628:therapy*; D019553:Tooth, Nonvital / Q000628:therapy; D016896:Treatment Outcome