Abstract
3D printed metal crowns can be used for dental restorations. The main quality control challenge of these dental metal is the method of quality inspection. Electronic quality is a process by which the quality of the process and the parts produced can be checked online, thereby improving the process and reducing the time it takes for the entire process. Here, we propose a combination of 3D scanning and 3D measurement for 3D inspection of metal crowns. The data extracted from the 3D printed metal crowns were used as case studies to prove the proposed methodology. The obtained results confirm that the new method has very high classification accuracy compared with the traditional inspection methods, and thus yields excellent results. Moreover, the proposed approach is capable to archive 3D models of the parts and achieve rapid quality control. This paper forms the basis for solving many other similar problems that occur in 3D printing related industries.
Highlights
Selective laser melting (SLM) technology can quickly prepare metal crowns suitable for the individual needs of different patients (Huang et al, 2015; Buican et al, 2017)
This paper presents a 3D E-quality control system that integrates 3D scanning and 3D reconstruction to perform fast quality control inspections of complex dental metal parts
This paper proposes a 3D E-quality control system, which integrates 3D scanning and 3D reconstruction functions, and can perform rapid quality control inspection on complex metal crown parts manufactured by SLM
Summary
Selective laser melting (SLM) technology can quickly prepare metal crowns suitable for the individual needs of different patients (Huang et al, 2015; Buican et al, 2017). The choice of different materials and the setting of process parameters may cause defects in printed crowns In this case, the E-quality control system was developed which is benefit to perform quality inspections reliably, accurately and in a very short time (Liverani et al, 2017). Recent work has shown that 3D dental models can be obtained through 3D scanning, which can be used for rapid prototyping, parts inspection and dimensional control (Munera et al, 2012; Javaid et al, 2019) This type of technology can use light as a probe, which does not damage the sample during analysis, ensuring that the measurement technology will not deform the object (Zhang and Alemzadeh, 2007). The systems compare the scanned 3D models of produced parts with the scanned 3D models of the standard parts to provide accurate and timely measurement feedback for quality control, thereby helping to prove that the produced products meet the required specifications
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