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Evaluating the Accuracy of Two Intraoral Scanning Systems in Reproducing Implant Positions for Prosthetic Fabrication: A Cross-Sectional Comparative Study

Year: 2025

Type: article

Abstract: BACKGROUND: The integration of digital technologies in implant dentistry has enhanced the precision of prosthetic fabrications by minimizing errors associated with traditional impression methods. However, variations in the accuracy of intraoral scanning systems can impact the fit and function of implant-supported prostheses. This study compared the accuracy of the Medit i700 (Medit Corp, Seoul, Korea) and Dentsply Sirona intraoral scanning systems in replicating implant positions, using direct intraoral measurements as the reference standard. METHODS: Six patients with 10 implant sites were included. Inclusion criteria involved stable implants with adjacent natural teeth. Direct intraoral distances from scan bodies to adjacent teeth were measured using a digital caliper. Digital scans were obtained for every site with both the Medit i700 and Dentsply Sirona (Dentsply Sirona, Bensheim, Germany) intraoral scanning systems, and three-dimensional (3D)-printed models were fabricated for measurement. To assess the accuracy of reproducibility in models, intercuspal distances and distances between the scan bodies and the nearest portion of adjacent teeth were measured. Accuracy was evaluated using intraclass correlation coefficient (ICC) and Bland-Altman analysis. RESULTS: For distances from scan bodies to adjacent teeth, the mean intraoral distance was 8.62 ± 4.28 mm. Medit i700 measurements (8.60 ± 4.25 mm) showed ICC = 1.00 and bias = 0.02 mm (limits: -0.10 to 0.14 mm). Dentsply Sirona (8.56 ± 4.34 mm) had ICC = 0.999 and bias = 0.05 mm (limits: -0.32 to 0.43 mm), indicating greater variability. For intercuspal distances, measurements were similar (Medit: 5.95 ± 0.77 mm; Sirona: 5.93 ± 0.76 mm; ICC = 0.999). CONCLUSION: The Medit i700 demonstrated superior accuracy over the Dentsply Sirona system, due to its advanced features and recent manufacturing. This supports its preference for precise implant prosthetics.

Source: Cureus

DOI: 10.7759/cureus.98548

Authors: Shankar S Menon, Biju Balakrishnan, Arun Kurumathur Vasudevan

Institution: Amrita Vishwa Vidyapeetham

Language: English

Topic: Dental Implant Techniques and Outcomes

Subfield: Oral Surgery

Field: Dentistry

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W4417069181