Influência dos sistemas de fixação em titânio e bioabsorvíveis na estabilidade pós-operatória após osteotomia Le Fort I: uma revisão sistemática

Abstract

Le Fort I osteotomy is widely used for the treatment of dentofacial deformities, with postoperative stability being one of the main factors associated with surgical success. This study aimed to compare postoperative stability, relapse, and complications associated with titanium and bioresorbable fixation systems following Le Fort I osteotomy through a systematic review of the literature. A systematic search was conducted in PubMed/MEDLINE, Embase, Cochrane Library, Scopus, and the Virtual Health Library (BVS), following the PRISMA guidelines. Randomized controlled trials and cohort studies comparing the two fixation systems were included. At the end of the selection process, six studies comprising 289 patients were included in the qualitative synthesis. Overall, both systems showed satisfactory horizontal and vertical skeletal stability, with a low occurrence of complications. Some studies reported greater relapse or initial displacement in patients treated with bioresorbable systems, whereas others found no clinically relevant differences between the materials. However, the limited number of comparative studies and methodological heterogeneity restrict the strength of the available evidence, preventing a definitive conclusion regarding the superiority of one fixation system over the other. Therefore, further comparative studies with larger samples and standardized protocols are needed to provide more consistent evidence regarding the stability and safety of these fixation systems.