Tratamento da mordida cruzada anterior com o arco progênico modificado um enfoque clínico

Abstract

The anterior crossbite is the abnormal positioning between the incisors, in which one or more upper incisors are positioned lingually in relation to the inferior ones when in a centric or habitual relation. The aim of this article is to present a clinical case of anterior crossbite of dental and functional origin in the mixed dentition, demonstrating success with interceptive orthodontics in the crossbreeding of anterior crossbite through the modified progenic arch device with digital springs in the elements 11,12, 21 and 22. The extrabuccal clinical examination revealed that the patient had a dolichofacial pattern, compatible middle and lower thirds, good labial sealing, maxillary and mandibular balance, slightly convex and Skeletal Class I soft profile. The intra-oral examination revealed the Class I Angle relationship of the first permanent molars. From the clinical, radiographic and cephalometric examinations the treatment plan was determined where the active supervision of space was chosen with the extraction of the upper and lower deciduous canines (right and left), progeny arch installation, modified with digital springs requiring Monthly adjustments in the retention clamps and activation of the digital springs, improving the stability, consequently, a better comfort for the patient. After 2 months of treatment, the correction of the anterior crossbite was verified. The clinical case showed a great success related to the use of the modified progenic arch with digital springs because it also worked in directing the mandibular growth clockwise and in the stimulation of maxillary growth where the treatment had a durability of 7 months of adjustments and preservation and containment phase by About 3 months, in such a way resulted in a good facial, dental and total uncrossing of the anterior crossbite during the early phase within the interceptive orthodontics.