الفهرس 
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Abstract
Aim: to evaluate and compare the retention as well as dentist and patient
satisfaction of maxillary 3D-printed dentures fabricated from thermoplastic tray
impressions to those made using conventional final impressions.
Methodology: Eleven completely edentulous patients were recruited for this
double-blind, randomized, crossover clinical trial. Participants were randomly
assigned to receive dentures fabricated from either thermoplastic tray impression
or traditional tray impression for two weeks before switching to the other pair. The
investigators and participants were both blind to the group allocation. Outcomes
assessed were maxillary denture retention patient and dentist satisfaction with
dentures. The outcomes were measured at baseline, and 2 weeks after denture
insertion. After crossover, a similar protocol was implemented. For statistical
analysis, a paired sample t-test with α=0.05 was used.
Results: The trial was successfully completed by all participants. No significant
difference in peak retention values was measured between the two groups at
baseline (p = 0.27) and 2-weeks after denture insertion (p = 0.55). However, after
two weeks of denture insertion, there was a statistically significant increase in
retention values for both the conventional tray impression technique (p = 0.016)
and the thermoplastic impression technique (p = 0.022). According to the paired
sample t-test, there was a statistically significant difference in overall patient
satisfaction favoring dentures fabricated from the thermoplastic tray, recording
3.40 ±1.23 (p = 0.001). Additionally, there was no significant difference in overall
dentist satisfaction with the denture in both studied groups. (p = 0.67)
Conclusion: A simplified approach for maxillary denture fabrication using
thermoplastic trays could have comparable outcomes with dentures made from
conventional trays.
Key words :complete denture, dental impression technique , edentulous jaw
patient significant, dentist significant, denture retention.