Comparative evaluation of pediatric patient comfort, time, and preference between digital scans and rubber base impressions: crossover study randomized controlled trial

This study aims to assess pediatric patient comfort, time, and preference between digital scans and rubber base impressions. Randomized crossover study in which thirty patients aged 7–11 years underwent an intraoral scan and rubber base (PVS) impressions of both arches, separated by one week. The sequence of impression procedures was determined using block randomization with allocation concealment through sealed envelopes. The two techniques’ impression times were compared. Patients were asked which one they preferred. The Visual Analogue Scale (VAS) was administered to the patient to determine comfort and gag reflex. 80% of patients preferred a digital scan to a rubber base, which was significant (P = 0.000). The digital scan took a shorter time than the rubber base, with a difference (4.16 ± 0.12; 95% CI: 3.92 to 4.39, p = 0.000). Comfort was significantly higher for digital impressions, with a difference (2.8 ± 0.56; 95% CI: 1.66 to 3.94, p = 0.000), while gag was smaller for digital impressions (0.7 ± 0.29; 95% CI: 0.09 to 1, p = 0.009). Digital impressions were better tolerated by children, offering greater comfort, reduced gag reflex, and shorter procedure time compared to conventional impressions. These findings suggest that digital impressions may be a more favorable option for children in clinical practice. The ClinicalTrials.gov identifier NCT06833385 13-02-2025.