What is the accuracy of the surgical guide in the planning of orthognathic surgeries? A systematic review

Abstract

Background To investigate the true accuracy of the surgical guide in the planning of orthognathic surgeries, which are performed worldwide. Material and Methods A systematic search was conducted in the PubMed database, Web of science, Scopus and Embase, covering August 2020 to January 2021. Studies that included patients with dentofacial deformity including anteroposterior, vertical and asymmetry problems who were undergoing an orthognathic surgery procedure were included; QUADAS-2 was used to determine the risk of bias by analyzing the quality of the studies. A PRISMA (flowchart) was created to show the study selection, keywords, nomination processes, and inclusion and exclusion criteria. Results Eleven studies were selected for qualitative and quantitative synthesis. All studies evaluated described high precision of the surgical guide, where the lowest error values were represented by the CAD/CAM technique. Conclusions The planning and printing errors related to the guide were all less than 2 mm, and the absolute averages of the errors related to virtual planning in the analysis of the different plans were less than 1 mm. Finally, the measurement of the ANB angle obtained equivalent results between the virtual planning and the traditional. Key words: Orthognathic surgery, splints, data accuracy, 3-D printing.

Virtual Surgical Planning and 3D-Printed Surgical Guides in Facial Allotransplantation

“…In a 2022 systematic review of orthognathic surgeries, surgical guides were found to be highly precise and accurate, with low error values represented by the CAD/CAM technique. 19 VSP and 3D-printed guides have also been used as a volumetric assessment tool for soft tissue correction with fat grafting in facial asymmetry. 20 While intraoperative navigation in facial allotransplantation can be useful in surgical accuracy, one disadvantage is the lack of precision of osteotomies compared with 3Dprinted guides.…”

“…In a 2022 systematic review of orthognathic surgeries, surgical guides were found to be highly precise and accurate, with low error values represented by the CAD/CAM technique. 19 VSP and 3D-printed guides have also been used as a volumetric assessment tool for soft tissue correction with fat grafting in facial asymmetry. 20…”

Revisão sistemática comparando a acurácia do planejamento cirúrgico convencional e planejamento virtual para cirurgia ortognática

“…Também são necessários exames de imagem como radiografia panorâmica e cefalométrica, nos quais são feitos os traçados preditivos, em que é definido quais movimentos serão utilizados na cirurgia, é necessário o uso de modelos dentários de gesso, que são fixados a um articulador dentário. A simulação cirúrgica é finalizada movendo os traçados ósseos para a posição desejada (GOULART et al, 2022).…”

“…Revisão de Literatura caso o paciente não esteja nos posicionamentos ideais durante a aquisição das imagens ou na análise cefalométrica, o que também pode resultar em falhas técnicas(GOULART et al, 2022). Revisão de Literatura necessidade do uso de arco facial, pois utiliza imagens tridimensionais, que permitem a visualização de estruturas adjacentes e sua influência na oclusão(GOULART et al, 2022).…”