Abstract
This study was performed to verify the influence of scanning-aid materials on the accuracy and time efficiency of full-arch scanning with intraoral scanners. The full-arch reference model was constructed by a 3D printer and scanned with a model scanner to obtain the reference dataset. Four experimental groups (application of ScanCure (SC-80, ODS Co, Incheon, Korea), IP Scan Spray (IP-Division, Haimhausen, Germany) and Vita Powder Scan Spray (Vita Zahnfabrik, Stuttgart, Germany), and no treatment) were designed, and the scans were executed (trueness, n = 5) using two intraoral scanners: I500 (Medit Co., Seoul, Korea) and TRIOS (3shape, Copenhagen, Denmark). All acquired scan data were compared with the reference datasets using the 3D superimposition method and 2D linear measurements. In the 3D analysis, intragroup data were compared with each other (precision, n = 10). Time efficiency was also verified by comparing the scan times of the four experimental groups. In the 3D analysis, the root mean square (RMS) value of the precision of the scanned image was statistically significantly more accurate in the scanning-aid agent-treated groups than in the no-treatment group (p < 0.05). However, the RMS values of trueness and the types of scanning-aid materials were not significantly different. In the 2D measurements, the increased scan distance generated a greater distance deviation. The working time was significantly shorter in the scanning-aid agent groups than in the no-treatment group, with statistical significance (p < 0.05). Therefore, in clinical situations, the application of scanning-aid materials is recommended to reduce scanning time and more efficiently obtain the full-arch scanned image.
Highlights
With the development of computer-aided design (CAD) and computer-aided manufacturing (CAM) systems, several commercial intraoral scanners with high accuracy have been introduced to the market and are increasingly being used in clinical practice for intraoral digital scanning
In our previous study, which was performed with inlay, onlay, onlay, and and bridge bridge reference reference models, the scanning-aid material-applied groups had significantly better better accuracy accuracy than than the no-treatment no-treatment group, group,and andthe theliquid-type liquid-typescanning-aid scanning-aid material had superior shape material had superior shape rereproducibility compared with other powder-type materials
The clinical implications of this study are, when applying the scanning-aid agents to the full dental arch, that the time efficiency and precision of the scanned data are significantly better than those without treatment. These findings suggest that scanning-aid materials can be applied to efficiently obtain full-arch scan data in real clinical situations
Summary
With the development of computer-aided design (CAD) and computer-aided manufacturing (CAM) systems, several commercial intraoral scanners with high accuracy have been introduced to the market and are increasingly being used in clinical practice for intraoral digital scanning. The main concern with the intraoral scanner systems (IOS) is enhancing their accuracy. Several studies have reported that the current IOS yields less deviation or even higher accuracy compared with conventional impressions for short spans limited up to a quadrant or three abutments [1,2,3,4]. Intraoral scanners may be a useful alternative for full-arch scans for diagnostic purposes [5]. To use IOS clinically in fabricating prostheses for full-arch cases, the accuracy of IOS over a long span should be evaluated and verified
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
