Msallem Bilal, Vavrina Joel J, Beyer Michel, Halbeisen Florian S, Lauer Günter, Dragu Adrian, Thieringer Florian M
UniversityCenter for Orthopedics, Trauma and Plastic Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, DE-01307 Dresden, Germany.
Medical Additive Manufacturing Research Group, Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland.
J Clin Med. 2024 Sep 30;13(19):5848. doi: 10.3390/jcm13195848.
With the rise of new 3D printers, assessing accuracy is crucial for obtaining the best results in patient care. Previous studies have shown that the highest accuracy is achieved with SLS printing technology; however, SLA printing technology has made significant improvements in recent years. In this study, a realistic anatomical model of a mandible and skull, a cutting guide for mandibular osteotomy, and a splint for orthognathic surgery were replicated five times each using two different 3D printing technologies: SLA and SLS. The SLA group had a median trueness RMS value of 0.148 mm and a precision RMS value of 0.117 mm. The SLS group had a median trueness RMS value of 0.144 mm and a precision RMS value of 0.096 mm. There was no statistically significant difference in RMS values between SLS and SLA technologies regarding trueness. Regarding precision, however, the RMS values for SLS technology were significantly lower in the splint and cutting guide applications than those printed with SLA technology. Both 3D printing technologies produce modern models and applications with equally high dimensional accuracy. Considering current cost pressures experienced by hospitals, the lower-cost SLA 3D printer is a reliable choice for point-of-care 3D printing.
随着新型3D打印机的兴起，评估精度对于在患者护理中获得最佳效果至关重要。先前的研究表明，SLS打印技术可实现最高精度；然而，SLA打印技术近年来已取得显著进步。在本研究中，使用两种不同的3D打印技术（SLA和SLS）分别对下颌骨和颅骨的逼真解剖模型、下颌骨截骨术的切割导板以及正颌手术的夹板进行了五次复制。SLA组的真实度RMS值中位数为0.148毫米，精度RMS值为0.117毫米。SLS组的真实度RMS值中位数为0.144毫米，精度RMS值为0.096毫米。在真实度方面，SLS和SLA技术之间的RMS值无统计学显著差异。然而，在精度方面，SLS技术在夹板和切割导板应用中的RMS值明显低于用SLA技术打印的RMS值。两种3D打印技术都能生产出尺寸精度同样高的现代模型和应用。考虑到医院目前面临的成本压力，成本较低的SLA 3D打印机是即时3D打印的可靠选择。
