Factors affecting the accuracy of intraoral scanners
Schmalzl Judit
Dental Research Division
Dr. Varga Gábor
SE FOK Oktatási Centrum Árkövy terem
2025-06-20 13:00:00
Dental Research
Dr. Varga Gábor
Dr. Borbély Judit és Dr. Vecsei Bálint
Dr.Orsós Mercédesz
Dr. Marada Gyula
Dr. Vág János
Dr. Demeter Tamás
Dr. Nagy Katalin
The increasing integration of digital workflows in dentistry, including intraoral scanning, has significantly improved efficiency and reproducibility in both clinical and laboratory settings. While intraoral scanners (IOSs) have demonstrated accuracy comparable to conventional impression techniques for short-span impressions, discrepancies have been observed in full-arch digital impressions. Given that digital impression accuracy is crucial for the long-term clinical success of definitive restorations, optimizing IOS technology remains a key focus in modern prosthodontics and restorative dentistry.
This doctoral thesis investigates various factors influencing IOS accuracy, including software updates, generational advancements in scanner hardware, and the impact of palatal scanning. Three distinct studies were conducted to examine these variables.
The first study aimed to assess the effect of software updates on IOS accuracy by comparing digital impressions obtained using different software versions. The second study evaluated the impact of generational changes on the accuracy of different IOSs. The third study investigated the effect of palatal scanning on the accuracy of complete arch scans.
Within the limitations of these studies, the research highlights the importance of continuous advancements in both IOS hardware and software in improving digital impression accuracy. Software updates play a crucial role in enhancing trueness, particularly in full-arch scanning, while generational improvements in scanner technology can lead to varying degrees of accuracy enhancement depending on the manufacturer. Additionally, palatal scanning has been identified as a factor that can improve digital impression accuracy by optimizing spatial mesh closure. However, further investigations are needed to better understand the relationship between image count and scan accuracy, as well as the influence of palatal morphology on digital impressions.
