Transverse maxillary deficiency associated with open bite treated by surgically assisted rapid maxillary expansion (SARME)

Vol. 15 – Number 58 – 2022 Case report Page 46-54 Transverse maxillary deficiency associated with open bite treated by surgically assisted rapid maxillary expansion (SARME) Mirian Oliveira Bastos Cruviel1 Caio Vinicius Martins do Valle2 Arthur César de Medeiros Alves3 Rayane de Oliveira Pinto4 Sheila Crystine S. Manke5 Karyna Martins do Valle Corotti6 Abstract The surgically assisted maxilla expansion (ERMAC) is a safe and effective treatment option for correction of posterior crossbite in adults. The objective of this article is to report a clinical case of a 37-year-old patient with maxillary atresia and anterior open bite, treated by ERMAC. The treatment plan consisted of the surgical expansion of the maxilla using a Hyrax device. Le Fort I surgery was performed in association with vestibular osteotomy between the roots of the upper central incisors. At the end of the active expansion period, a fixed corrective device was installed in the lower arc and after 4 months after the expansion the circuit breaker was removed and a fixed upper apparatus was installed. Leveling wires were evolved up to. 019”x.025” steel. In this phase, intermaxillary elastics of Class II and anterior vertical elastics were used to correct Class II left sudbivision and anterior open bite, respectively. After removing the fixed corrective devices, the containments were installed; Hawley board in the upper arch and 3×3 in the lower arch. The cross-sectional relationship was efficiently corrected by means of the ERMAC, thus achieving an adequate interarcol relationship. The occlusion ended stable with conformation of the arch and the smile satisfactory. Descriptors: Palatal expansion technique, orthognathic surgery, adult, corrective Orthodontics. 1 Specialist in Orofacial Pain and TMJ Dysfunction – FUNORTE/SOEBRAS, Master in Oral Biology – USC/BAURU, Doctor in Orthodontics – SL Mandic. 2 Master and Doctor – FOB-USP, Coordinator of the Specialization Course in Orthodontics – NAEO-Cursos/SC, Instituto Hermann/SC and Instituto Proffel/Florianópolis/SC, Professor of Specialization in Orthodontics – IEO-BAURU/SP. 3 Master and Doctor in Orthodontics – FOB-USP, Adjunct Professor of Orthodontics, Department of Dentistry – UFRN. 4 Doctoral Student – ​​Department of Children’s Clinic – FoAr/UNESP. 5 Specialist in Orthodontics – Uniasselvi – Florianópolis/SC nucleus, Master’s student in Orthodontics – UNIARARAS. 6 Master and Doctor – FOB-USP, Coordinator of the Specialization in Orthodontics – IEO-BAURU, Professor of the Specialization Course in Orthodontics – NAEO-Cursos/Balneário Camboriú and Instituto Hermann/Blumenau. DOI: 10.24077/2022;1557-1802440