Management of a Dental Malocclusion with Mini Implants in Mandibular Shelf and Fixed Appliances. Case Report
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Abstract
Introduction: Skeletal class III due to prognathism is defined as the anteroposterior disproportion of the mandible in relation to the maxilla. Its origin is multifactorial, and among its most frequent causes are genetic factors, oral habits, and premature loss of primary teeth, among others. The solution to this malocclusion in people who have completed their development is usually surgical or through a compensation treatment as a viable option to correct or mitigate the effects of this condition, offering less invasive and accessible solutions for patients. Objective: To present non-surgical treatment techniques for patients with a class III maxillomandibular relationship due to mandibular prognathism. Case presentation: A 13-year-old female patient who sought orthodontic treatment whose reason for consultation was "I don't like my teeth." The diagnosis showed a straight facial profile, class I skeletal relationship with a tendency to class III due to an ANB of 1°, Ricketts convexity of 0.9°, and Wits -3.9°, Angle class III molar relationship, canine class III, proclination of upper incisors, upper and lower anterior crowding, and anterior and posterior crossbite on the left side. The treatment plan consisted of distalization of the lower arch with the use of mini-implants placed bilaterally on the mandibular shelf. At the end of the treatment, an Angle class I molar relationship, canine class I, posterior crossbite correction, and adequate overjet, overbite, and intercuspation were obtained. Conclusions: The use of mandibular shelf mini-implants is efficient for distalization of the lower dental arch in skeletal Class I patients with tendency towards Class III who present bilateral Angle molar Class III and canine Class III.
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