Simple removable appliances to correct anterior and posterior crossbite in mixed dentition: Case report

Abstract

Different techniques have been used to correct anterior and posterior crossbites in mixed dentition. This case report illustrates the treatment of anterior and unilateral posterior crossbites during the mixed dentition. The patient was a 9-year-old boy with a crossbite of the maxillary right permanent central incisor and a unilateral right posterior crossbite, both expressed by a functional shift in the sagittal and transverse dimensions. Two upper acrylic removable appliances, each with an expansion jackscrew, were used to correct the crossbites. The total active treatment time was 4 months; the treatment outcomes were successfully maintained for the subsequent 4 months. General and pediatric dentists, as well as orthodontists, may find this technique useful in managing crossbite cases of the mixed dentition and utilizing the discussion and illustrations for further clinical guidance.

Early Treatment of Anterior Crossbite Relating to Functional Class III

“…Anterior crossbite is defined as a situation in which one or more permanent mandibular incisors occlude labially to their antagonists [4], which can be associated or not to a mandibular lateral-deviation [7].…”

“…The anterior crossbite that results is established in the mixed dentition. Different etiological factors are involved; they can be classified in dental, functional and skeletal factors [4,8,9].…”

“…Premature contact between the maxillary and mandibular incisors results in a forward displacement of the mandible to permit a comfortably occlusion [4,9,11].…”

“…Thorough clinical assessment and accurate diagnosis must be performed in order to plan proper treatment strategies and appliance design during the early stages of dental development. In this respect, various modes of treatment have been suggested for anterior crossbite correction [2,3,4,5]; early interceptive treatment is one mode of treatment, which has been suggested because of its diverse benefits.…”

Comparative Evaluation of a Combination of Facemask-Removable Appliance and Removable Appliance Alone for Antero-Posterior Expansion in 8 - 10-Year-Old Cl III Children with Maxillary Deficiency

“…In addition, removable appliances with anterior or posterior expansion screw (or both), alone or in combination with facemasks, have been used in a number of studies to correct the jaw relationships in patients with Cl III malocclusion; such studies have been case reports (19) or case series (20) with no control groups and no matching of appliances and treatment biomechanics.…”