Digital impressions in contemporary prosthodontics: an overview of intraoral scanning technology, applications and future trends

Shajahan P. A.; Rohit Raghavan; Sreehari S.

doi:10.18203/2320-6012.ijrms20263151

Authors

Shajahan P. A. Department of Prosthodontics, Royal Dental College, Palakkad, Kerala, India
Rohit Raghavan Department of Prosthodontics, Royal Dental College, Palakkad, Kerala, India
Sreehari S. Department of Prosthodontics, Royal Dental College, Palakkad, Kerala, India

DOI:

https://doi.org/10.18203/2320-6012.ijrms20263151

Keywords:

Intraoral scanner, Digital impression, Digital dentistry, CAD/CAM, Prosthodontics, Intraoral scanning

Abstract

Digital technology has progressed significantly in recent years, resulting in substantial advancements in dentistry. The integration of computer-aided design and computer-aided manufacturing (CAD/CAM) has simplified clinical procedures while improving precision, efficiency, and communication between clinicians and dental laboratories. The introduction of intraoral scanners (IOS), together with advances in CAD/CAM technology, has further transformed conventional impression procedures. Digital impressions improve patient comfort, facilitate immediate visualization of the scanned area, simplify data storage, and enable rapid electronic transfer of information to dental laboratories. Recent investigations have demonstrated that digital impressions can provide clinically acceptable accuracy for many fixed prosthodontic and implant-supported restorations. However, their accuracy is influenced by scanner characteristics, scanning strategy, scan length, operator experience, surface characteristics, and intraoral conditions. Recent advances in artificial intelligence, photogrammetry, cloud-based platforms, and three-dimensional printing are expected to further expand their clinical applications.

References

Alghazzawi TF. Advancements in CAD/CAM technology: Options for practical implementation. J Prosthodont Res. 2016;60(2):72-84.

Davidowitz G, Kotick PG. The use of CAD/CAM in dentistry. Dent Clin North Am. 2011;55(3):559-70.

Birnbaum NS, Aaronson HB. Digital impression devices and CAD/CAM systems. Chapter 46. Ronald E. Goldstein's Esthetics in Dentistry. 3rd Edition. Wiley; 2018:1386-407.

Rutkūnas V, Borusevičius R, Gečiauskaitė A, Pletkus J. Digital technologies in clinical restorative dentistry. Chapter 13. Practical Advanced Periodontal Surgery. 2nd Edition. Wiley; 2020:213-32.

Tordiglione L, De Franco M, Bosetti G. The prosthetic workflow in the digital era. Int J Dent. 2016;2016(1):9823025.

Yuzbasioglu E, Kurt H, Turunc R, Bilir H. Comparison of digital and conventional impression techniques: evaluation of patients’ perception, treatment comfort, effectiveness and clinical outcomes. BMC Oral Health. 2014;14(1):10.

Husein HA, Morad ML, Kanout S, Kanout C. Accuracy of conventional and digital methods of obtaining full-arch dental impression (in vitro study). Cureus. 2022;14(9):e29055.

Sacher M, Schulz G, Deyhle H, Jäger K, Müller B. Accuracy of commercial intraoral scanners. J Med Imag. 2021;8(3):035501.

Pugalendhi R, Jayaprakasan N, Karuveettil V, Varma NKS, Ajith VV, Prabha R. Effectiveness of intraoral scanners in full arch digital impression–a systematic review. Clin Investig Orthodont. 2022;81(3):127-36.

Ma J, Zhang B, Song H, Wu D, Song T. Accuracy of digital implant impressions obtained using intraoral scanners: A systematic review and meta-analysis of in vivo studies. Int J Implant Dent. 2023;9(1):48.

Kaitatzidou A, Chalazoniti A, Faggion CM, Bakopoulou A, Barbosa-Liz DM, Giannakopoulos NN. Digital scans versus conventional impressions in fixed prosthodontics: An overview of systematic reviews. J Prosthet Dent. 2025;134(6):2156-64.

Lee KM. Comparison of two intraoral scanners based on three-dimensional surface analysis. Progress Orthodont. 2018;19(1):6.

Zupancic Cepic L, Gruber R, Eder J, Vaskovich T, Schmid-Schwap M, Kundi M. Digital versus conventional dentures: a prospective, randomized cross-over study on clinical efficiency and patient satisfaction. J Clin Med. 2023;12(2):434.

Peroz S, Peroz I, Beuer F, von Stein-Lausnitz M, Sterzenbach G. Digital versus conventional complete dentures: A randomized, controlled, double-blinded crossover trial. J Prosthet Dent. 2024;132(1):132-8.

Wang Y, Li Y, Liang S, Yuan F, Liu Y, Ye H, et al. The accuracy of intraoral scan in obtaining digital impressions of edentulous arches: a systematic review. J Evid Based Dent Pract. 2024;24(1):101933.

Marques S, Ribeiro P, Falcão C, Lemos BF, Ríos-Carrasco B, Ríos-Santos JV, et al. Digital impressions in implant dentistry: a literature review. Int J Environ Res Public Health. 2021;18(3):1020.

Dos Reis IN, Chamma-Wedemann CN, de Oliveira Silva IA, Spin-Neto R, Sesma N, da Silva EV. Clinical outcomes of digital scans versus conventional impressions for implant-supported fixed complete arch prostheses: A systematic review and meta-analysis. J Prosthet Dent. 2025;134(2):346-55.

Joensahakij N, Serichetaphongse P, Chengprapakorn W. The accuracy of conventional versus digital (intraoral scanner or photogrammetry) impression techniques in full-arch implant-supported prostheses: a systematic review. Evid Based Dent. 2024;25(4):216-7.

Ribeiro CS, Brandão MT, Moreira GC, Bitencourt SB, de Carvalho RF, Lemos CA. Intraoral Scanning Versus Conventional Impression for Implant Prostheses: A Systematic Review. Eur J Prosthodont Restor Dent. 2025;33(2):206.

Mayta-Tovalino F, Munive-Degregori A, Luza S, Cárdenas-Mariño FC, Guerrero ME, Barja-Ore J. Applications and perspectives of artificial intelligence, machine learning and “dentronics” in dentistry: a literature review. J Int Soc Prev Comm Dent. 2023;13(1):1.

Liu PY, Liou JJ, Huang SW. Exploring the barriers to the advancement of 3D printing technology. Mathematics. 2023;11(14):3068.