Surgically assisted rapid maxillary expansion (SARME) is the treatment of choice to adult patients even with severe transversal maxillary discrepancies. However, the adequate retention period to achieve the bone remodeling, thus assuring treatment stability, is controversial. Objective To evaluate the opening pattern and bone neoformation process at the midpalatal suture in patients submitted to surgically assisted (SARME) through cone beam computed tomography (CBCT).Material and Methods Fourteen patients were submitted to SARME through subtotal Le Fort I osteotomy. Both the opening pattern and the mean bone density at midpalatal suture area to evaluate bone formation were assessed pre- and post-operatively (15, 60 and 180 days) through CBCT.Results Type I opening pattern (from anterior to posterior nasal spine) occurred in 12 subjects while type II opening pattern (from anterior nasal spine to transverse palatine suture) occurred in 2 individuals. The 180-day postoperative mean (PO 180) of bone density value was 49.9% of the preoperative mean (Pre) value.Conclusions The opening pattern of midpalatal suture is more related to patients’ age (23.9 years in type I and 33.5 years in type II) and surgical technique. It was not possible to observe complete bone formation at midpalatal suture area at the ending of the retention period studied (180 days).
por me ajudar a trazer esse trabalho à existência. Você tem minha eterna gratidão por isso. Patrícia, doutoranda da ortodontia, por ser a prova incontestável de que ainda é possível acreditar na bondade de alguém. Obrigado pelo que fez por mim. Vitor Hugo Rodrigues, por partilharmos, em todo esse tempo, das mesmas adversidades e anseios. Desejo a você todo sucesso do mundo nessa nova etapa da sua vida! Danilo por ser um amigo fiel que nunca titubeou quando precisei de você. Victor Tieghi por ser um exemplo de determinação para mim e sem o qual essa dissertação seria um mero rascunho. AGRADECIMENTOS Agradeço... À Profa. Dra. Ana Lucia Capelozza, minha eterna orientadora, que me serviu de refrigério diante das aflições, tornando-se para mim um modelo de respeito ao próximo e de amor ao que faz. Muito obrigado! Aos professores do departamento de cirurgia, Renato Yaedu, Eduardo Sant'Ana, Eduardo Gonçales e Paulo Sérgio Perri de Carvalho em cuja presença sempre aprendo e sempre terão algo a ensinar.
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