Accuracy of Intraorally Scanned Denture Impressions Compared to Conventional Border-Molded Impressions: An In Vivo Study

What this Trial Is About

Researchers are comparing the accuracy of two denture impression methods for adults who have lost all their teeth. This study evaluates whether digital intraoral scanning matches the accuracy of conventional border-molded impressions in capturing mouth shapes, including movable gum areas. The study also examines if repeated digital scans are consistent when taken multiple times on the same patient. Participants will have their fully edentulous upper and/or lower jaw scanned three times using a TRIOS 5 intraoral scanner following a structured sequence to capture the full arch including the palate and ridge slopes. After digital scans, each participant will also receive a conventional impression using a custom tray and border molding technique. Both procedures occur during two visits at Dubai Dental Hospital. Participants will provide informed consent and attend two study visits where scans and impressions are taken. Researchers will analyze the accuracy by measuring the difference between digital and conventional impressions and assess the precision of repeated digital scans. The main outcomes include the mean deviation between the two methods per arch and precision within repeated digital scans. Secondary outcomes compare differences between upper and lower jaws and between fixed and movable gum areas. Participation lasts about one week for outcome assessment.

Accuracy of Digital vs Conventional Denture Impressions: An In Vivo Study