Skeletal Class III Malocclusion with Unilateral Congenitally Missing Maxillary Incisor Treated by Maxillary Protractor and Edgewise Appliances

Abstract

This case report describes the orthodontic treatment of a 10-year-old female patient with a combination of Angle Class III malocclusion, a missing maxillary right lateral incisor, a supernumerary tooth with a short root on the lingual side of the maxillary incisor, a skeletal Class III jaw base relationship caused by a diminutive maxilla, and retroposition of the maxilla. We chose to close the space of the missing tooth, as well as the space created by extraction of the maxillary lateral incisor, by forward movement of the canine and premolars using a maxillary protractor with edgewise appliances. As a result, both the maxillary premolars and the molars were moved mesially, and a Class II molar relationship with tight interdigitation was achieved. Our results suggest that the combination of maxillary protractor and nontorque brackets was effective not only for correcting skeletal Class III malocclusion, but also for forward movement of the maxillary posterior teeth. (Angle Orthod 2010;80:405-418.)

Treatment of an Adult Skeletal Class III Patient with Surgically Assisted Rapid Palatal Expansion and Facemask

“…Excessive length of the mandibular body, maxillary hypoplasia, or a combination of both can lead to skeletal class III malocclusion [1,2]. It has a reported incidence of 5% to 14% in different populations [3].…”

Analysis of variation of sagittal position of the jaw bones in skeletal class III malocclusion

“…Iz tih razloga, u le enju ove malokluzije možemo predložiti što raniju stimulaciju sagitalog razvoja gornje vilice, bilo s ciljem njene definitivne korekcije ili stvaranja povoljnijih skeletnih odnosa koji e doprineti stabilnosti kasnijeg ortognatsko-hirurškog le enja 12,[26][27][28][29] .…”