title: Absence of multiple premolars and ankylosis of deciduous molar with cant of the occlusal plane treated using skeletal anchorage.
abstract: Ankylosis and the absence of premolars are two relatively common conditions encountered in the field of orthodontics. However, the absence of multiple premolars, particularly two adjacent premolars, along with ankylosis of deciduous teeth, is unusual. Herein, we present a case report and discuss some aspects related to these abnormalities. A 15-year-old boy was missing the upper right first and second premolars and the lower right and left second premolars. In addition, the deciduous lower left second molar was ankylosed and in infraocclusion, causing canting of the occlusal plane. The patient was treated with a mini-implant to correct the Class II malocclusion on the left side and a miniplate to correct the cant of the occlusal plan. After treatment, the upper right space was kept closed, with the canine in contact with the first molar, and the lower left space was opened to an implant-prosthetic rehabilitation.
authors.forename: Marcel M
authors.initials: MM
authors.lastname: Farret
authors.forename: Milton M B
authors.initials: MM
authors.lastname: Farret
mesh_terms: D000293:Adolescent; D000848:Anodontia / Q000628:therapy*; D001641:Bicuspid / Q000002:abnormalities*; D001860:Bone Plates; D002508:Cephalometry / Q000379:methods; D015921:Dental Implants; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy; D008904:Miniaturization; D008963:Molar / Q000473:pathology* / Q000601:surgery; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D019516:Orthodontic Space Closure / Q000379:methods; D010347:Patient Care Planning; D020254:Tooth Ankylosis / Q000601:surgery / Q000628:therapy*; D014087:Tooth Movement Techniques / Q000379:methods; D014094:Tooth, Deciduous / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants
keywords: Cant of the occlusal plane; Class II malocclusion; Premolar absence; Skeletal anchorage