A UTILIZAÇÃO DO ÍNDICE DE NECESSIDADE FUNCIONAL DE TRATAMENTO ORTOGNÁTICO (IOFTN) COMO FERRAMENTA DE TRIAGEM POPULACIONAL PARA TRATAMENTO DAS DEFORMIDADES DENTOFACIAIS
Dentofacial abnormalities; Diagnosis; Orthognathic surgery; Screening; Validation Study.
Dentofacial deformity (DDF) can be understood as a distortion in the process of skeletal and dental development, leading to a geometric discrepancy between maxilla and mandible, affecting the functions of the stomatognathic system and facial aesthetics, with psychological and social consequences. Its treatment is carried out in an interdisciplinary way, mainly involving surgery, and orthodontics. The aim of this study is to determine the accuracy of IOFTN in screening the need for surgical treatment in patients with DDF in the Brazilian population, validating it through an integrative review on its use, and verifying its validity by comparing its results with clinical indications between those who need and not undergo a surgical procedure to correct Dentofacial Deformity. In the integrative review we obtained 13 studies that used IOFTN in its methodology. All studies used secondary data, obtaining 90.7% of individuals classified in the categories “Great need for treatment” (class 4) and “very great need for treatment” (class 5). All patients in the study who had an indication for surgery were classified in classes 3, 4 and 5. 85.5% of them in classes 4 and 5. Among those who had no indication for surgery, 79.2% were class 1 and 2 (who do not need to perform a surgical procedure). The accuracy values were considered good, with an ideal cutoff point between classes 2 and 3, where the highest diagnostic precision (90.91%) was obtained, with 100% sensitivity and 79.17% specificity. From that point on, sensitivity tends to decrease and specificity increases. Therefore, classes 3, 4 and 5 are effective in determining the need for surgical treatment of DDF. With that, we can say that the IOFTN is an effective and reliable index to predict, in a clear and objective way, the need for orthognathic surgery.