Direct Digitalization Devices in Today’s Dental Practice: Intra Oral Scanners

Abstract

Rapidly developing technologies and new changes in modern dentistry have led to more effective solutions to be used in our clinical practice. The digital workflow includes some steps, such as data acquisition, digitalization, designing, and subsequently manufacturing by using digital devices. In this process, acquiring the images from patients mouth, which is named computer-aided impression (CAI), is the first step of the digital workflow and named as digitalization. The need to skip many time-consuming intermediate steps and reduce the possibility of fabrication errors has made the digital workflow a popular choice for dentists and dental technicians. The popularity of intraoral scanners has increased rapidly since the 1980s. With the development of camera systems and software engineering, many companies have presented many different IOS devices, which are based on different software systems. This situation causes dentists to get confused due to the formation of a very large data cluster. IOS devices are used to capture the digital data and they are an effective alternative to conventional impressions in many ways, such as increased patient comfort, time efficiency, hygiene, predictability, and precise results. Clinicians should have enough technical information about the IOS they use to obtain optimal results in fabricated restorations. The aim of this review is to evaluate the scanning technologies of intraoral scanners, their advantages and disadvantages in clinical practice, scanning strategies, accuracy of scanning processes, and software protocols.

Keywords

• CAD-CAM,Digital Workflow,Digital,Dentistry,Intraoral,scanner

References

1. Burgner, J., Simpson, A., Fitzpatrick, J., Lathrop, R., Herrell, S., Miga, M., Webster Iii, R., 2013. A study on the theoretical and practical accuracy of conoscopic holography‐based surface measurements: toward image registration in minimally invasive surgery. Int. J. Med. Robot. 9, 190-203.
2. Chiu, A., Chen, Y.W., Hayashi, J., Sadr, A., 2020. Accuracy of CAD/CAM digital impressions with different intraoral scanner parameters. Sensors. 20, 1157.
3. Da Costa, J., Pelogia, F., Hagedorn, B., Ferracane, J., 2010. Evaluation of different methods of optical impression making on the marginal gap of onlays created with CEREC 3D. Oper. Dent. 35, 324-329.
4. Ender, A., Mehl, A., 2013. Accuracy of complete-arch dental impressions: a new method of measuring trueness and precision. J. Prosthet. Dent. 109, 121-128.
5. Ender, A., Mehl, A., 2015. In-vitro evaluation of the accuracy of conventional and digital methods of obtaining full-arch dental impressions. Quintessence. Int. 46, 9-17.
6. Flügge, T., Van Der Meer, W.J., Gonzalez, B.G., Vach, K., Wismeijer, D., Wang, P., 2018. The accuracy of different dental impression techniques for implant‐supported dental prostheses: A systematic review and meta‐analysis. Clin. Oral. Implants. Res. 29, 374-392.
7. Geng, J., 2011. Structured-light 3D surface imaging: a tutorial. Adv. Opt. Photon. 3, 128-160.
8. Giachetti, L., Sarti, C., Cinelli, F., Russo, D.S., 2020. Accuracy of digital impressions in fixed prosthodontics: a systematic review of clinical studies. Int. J. Prosthodont. 33, 192-201.

9. Giménez, B., Özcan, M., Martínez‐Rus, F., Pradíes, G., 2015. Accuracy of a digital impression system based on active wavefront sampling technology for implants considering operator experience, implant angulation, and depth. Clin. Implant. Dent. Relat. Res. 17, e54-e64.
10. Gjelvold, B., Chrcanovic, B.R., Korduner, E.K., Collin‐Bagewitz, I., Kisch, J., 2016. Intraoral digital impression technique compared to conventional impression technique. A randomized clinical trial. J. Prosthodont. 25, 282-287.
11. Goracci, C., Franchi, L., Vichi, A., Ferrari, M., 2016. Accuracy, reliability, and efficiency of intraoral scanners for full-arch impressions: a systematic review of the clinical evidence. Eur. J. Orthod. 38, 422-428.
12. Grünheid, T., Mccarthy, S.D., Larson, B.E., 2014. Clinical use of a direct chairside oral scanner: an assessment of accuracy, time, and patient acceptance. Am. J. Orthod. Dentofacial. Orthop. 146, 673-682.
13. Güth, J.F., Runkel, C., Beuer, F., Stimmelmayr, M., Edelhoff, D., Keul, C., 2017. Accuracy of five intraoral scanners compared to indirect digitalization. Clin. Oral. Investig. 21, 1445-1455.
14. Imburgia, M., Logozzo, S., Hauschild, U., Veronesi, G., Mangano, C., Mangano, F.G., 2017. Accuracy of four intraoral scanners in oral implantology: a comparative in vitro study. BMC. Oral. Health. 17, 92.
15. Ireland, A., Mcnamara, C., Clover, M., House, K., Wenger, N., Barbour, M., Alemzadeh, K., Zhang, L., Sandy, J., 2008. 3D surface imaging in dentistry–what we are looking at. Br. Dent. J. 205, 387-392.
16. Joda, T., Braegger, U., 2015. Time-efficiency analysis comparing digital and conventional workflows for implant crowns: a prospective clinical crossover trial. Int. J. Oral. Maxillofac. Implants. 30, 1047-1053.
17. Joda, T., Brägger, U., 2016. Patient‐centered outcomes comparing digital and conventional implant impression procedures: a randomized crossover trial. Clin. Oral. Implants. Res. 27, e185-e189.
18. Lee, S.J., Gallucci, G.O., 2013. Digital vs. conventional implant impressions: efficiency outcomes. Clin. Oral. Implants. Res. 24, 111-115. Lerner, H., Mouhyi, J., Admakin, O., Mangano, F., 2020. Artificial intelligence in fixed implant prosthodontics: a retrospective study of 106 implant-supported monolithic zirconia crowns inserted in the posterior jaws of 90 patients. BMC. Oral. Health. 20, 1-16.
19. Lim, J.H., Park, J.M., Kim, M., Heo, S.J., Myung, J.Y., 2018. Comparison of digital intraoral scanner reproducibility and image trueness considering repetitive experience. J. Prosthet. Dent. 119, 225-232.
20. Logozzo, S., Zanetti, E.M., Franceschini, G., Kilpelä, A., Mäkynen, A., 2014. Recent advances in dental optics–Part I: 3D intraoral scanners for restorative dentistry. Opt. Laser. Eng. 54, 203-221.
21. Mangano, F., Gandolfi, A., Luongo, G., Logozzo, S., 2017. Intraoral scanners in dentistry: a review of the current literature. BMC. Oral. Health. 17, 149.
22. Mao, Z., Park, K., Lee, K., Li, X., 2014. Robust surface reconstruction of teeth from raw pointsets. Int. J. Numer. Method. Biomed. Eng. 30, 382-396.
23. Miyazaki, T., Hotta, Y., Kunii, J., Kuriyama, S., Tamaki, Y., 2009. A review of dental CAD/CAM: current status and future perspectives from 20 years of experience. Dent. Mater. J. 28, 44-56.
24. Moörmann, W.H., 2006. The evolution of the CEREC system. J. Am. Dent. Assoc. 137, 7S-13S.
25. Müller, P., Ender, A., Joda, T., Katsoulis, J., 2016. Impact of digital intraoral scan strategies on the impression accuracy using the TRIOS Pod scanner. Quintessence. Int. 47, 343-349.
26. Park, J.M., 2016. Comparative analysis on reproducibility among 5 intraoral scanners: sectional analysis according to restoration type and preparation outline form. J. Adv. Prosthodont. 8, 354-362.
27. Patzelt, S.B., Emmanouilidi, A., Stampf, S., Strub, J.R., Att, W., 2014a. Accuracy of full-arch scans using intraoral scanners. Clin. Oral. Investig. 18, 1687-1694.
28. Patzelt, S.B., Lamprinos, C., Stampf, S., Att, W., 2014b. The time efficiency of intraoral scanners: an in vitro comparative study. J. Am. Dent. Assoc. 145, 542-551.
29. Persson, A.S., Odén, A., Andersson, M., Sandborgh-Englund, G., 2009. Digitization of simulated clinical dental impressions: virtual three-dimensional analysis of exactness. Dent. Mater. 25, 929-936.
30. Punj, A., Bompolaki, D., Garaicoa, J., 2017. Dental impression materials and techniques. Dent. Clin. North. Am. 61, 779-796.
31. Renne, W., Ludlow, M., Fryml, J., Schurch, Z., Mennito, A., Kessler, R., Lauer, A., 2017. Evaluation of the accuracy of 7 digital scanners: An in vitro analysis based on 3-dimensional comparisons. J. Prosthet. Dent. 118, 36-42.
32. Richert, R., Goujat, A., Venet, L., Viguie, G., Viennot, S., Robinson, P., Farges, J.C., Fages, M., Ducret, M., 2017. Intraoral scanner technologies: a review to make a successful impression. J. Health. Eng. doi: 10.1155/2017/8427595.
33. Tamimi, F., Hirayama, H. 2019, Digital Restorative Dentistry. Springer International Publishing, Switzerland.
34. Taneva, E., Kusnoto, B., Evans, C.A, 2015. 3D scanning, imaging, and printing in orthodontics. Issues in Contemporary Orthodontics, Farif Bourzgui, eds. InTech, pp. 147–188.
35. Ting‐Shu, S., Jian, S., 2015. Intraoral digital impression technique: a review. J. Prosthodont. 24, 313-321. Zimmermann, M., Mehl, A., Mörmann, W., Reich, S., 2015. Intraoral scanning systems-a current overview. Int. J. Comput. Dent. 18, 101-129.