Clinical studies

The expectations for the clinical and laboratory phases of tissue-supported complete dentures (TSCDs) are changing. Currently, there is a trend towards fast, comfortable, reliable, and low-cost methods.

In TSCD impressions, simplified impression and digital impression methods involving the use of an intraoral scanner (IOS) are becoming preferable. Given this situation, this study aims to compare different conventional and digital impression methods used in TSCDs.

This prospective crossover clinical trial aimed to compare the complete-digital and -analog workflows in terms of occlusal adjustment of 3-unit tooth-supported fixed dental prostheses, operator, and patient preferences.

"This digital workflow is a reliable and efficient treatment option, as it improves restoration quality by reducing errors."

"TRIOS had a higher accuracy than OMNIcam. Intraoral scanners can be used as a replacement for conventional impressions."

"Crowns based on TRIOS show statistically significantly better marginal and internal adaptation before cementation compared to conventional impression."

Study confirms TRIOS 3 and 4 confirm as accurate as Primescan and statistically more accurate than Omnicam, Runyes and Launca DL206 IOS.

"Intraoral scans of edentulous jaws are feasible, and their accuracy is not significantly different from that of conventional impressions, either clinically or statistically."

"The overall difference of the median precision measurements between the two scanners was approximately 10 μm (0.0098 mm). However, the lowest precision was detected for TRIOS 3 scans of a specific patient."

The use of 3D intraoral scanners (IOS) and software that can support automated detection and objective monitoring of oral diseases such as caries, tooth wear or periodontal diseases is increasingly receiving attention from researchers and industry. This study clinically validates an automated caries scoring system for occlusal caries detection and classification, previously developed for an IOS system featuring fluorescence (TRIOS 4, 3Shape TRIOS A/S, Denmark).