The Acceptability of Digital Impression Compared to Conventional Technique in Children

Digital dental impressions were performed using the Medit i700 intraoral scanner (Medit, Seoul, South Korea). The scanner utilizes 3D-in-motion video technology with UV-C and LED light sources and adaptive anti-fogging. Scans were taken of both upper and lower arches following manufacturer-recommended protocols. Two tip sizes were used (normal and small), and scanning included occlusal, lingual, and buccal surfaces. Moisture control was maintained with cheek retractors and saliva ejectors. Impression time was recorded using a chronometer. This procedure was used to evaluate patient comfort, anxiety, and preference.

Conventional impressions were taken using extra-fast setting flavored alginate (Hydrogum 5, Zhermack SpA, Italy) for both upper and lower arches. The impression material was manually mixed according to the manufacturer's instructions and applied using standard perforated plastic trays suitable for pediatric arches. Children were seated upright, and the impression sequence followed lower arch first, then upper arch. Comfort was evaluated using VAS scores and anxiety using the Venham Clinical Anxiety Scale (VCAS). The procedure was timed with a chronometer.