Correction of transverse maxillary deficiency and anterior open bite in an adult Class III skeletal patient

Abstract

Transverse maxillary deficiency may be associated with sagittal or vertical problems of the maxilla or mandible. It may contribute to unilateral or bilateral posterior crossbite, anterior dental crowding, and unesthetic black buccal corridors on smiling. An adequate transverse dimension is important for stable and proper functional occlusion. Surgically, assisted rapid palatal expansion has been the treatment of choice to resolve posterior crossbite in skeletally mature patients. The following case report presents an adult Class III skeletal patient with an anterior open bite and bilateral posterior crossbite which was treated by surgically assisted rapid maxillary expansion with satisfactory outcomes.

Treatment of maxillary transverse deficiency with rapid expansion of the palate with mini-implant: a review

“…Surgically, assisted rapid palatal expansion has been the treatment of choice to resolve posterior crossbite in skeletally mature patients. 15 The correct diagnosis of the severity of transverse deficiency is essential to achieve adequate treatment. In order to make the best therapeutic decision on the different cases of maxillary hypoplasia in patients with advanced skeletal maturation, the different factors must be comprehensively assessed.…”

“…It is a combination of orthodontic and surgical procedures that causes considerable expansion of the maxillary apical base and palatal vault, providing a dental arch space, this technique may include bilateral osteotomy of the zygomatic pillars and palatal suture with or without separation of the pterygoid processes. 15 Lee et al suggested a non-surgical approach to RME as an alternative to optimize the potential of skeletal expansion in patients with advanced skeletal maturation using mini-implants (miniscrewassisted rapid palatal expansion, MARPE), this MARPE applies forces to the miniscrews placed close to the midpalatal suture, differently from other techniques, which apply forces to the teeth or periodontium, therefore avoiding the need of osteotomies. [16][17][18] MARPE is a less invasive option than SARME, has a skeletal effect, fewer dentoalveolar effects, no surgical risks and reasonably stable results, in addition to being more affordable financially.…”