An interventional study of Medit i700 and TRIOS 3 in Acquired Maxillary Defect, sponsored by Ain Shams University. Completed at 1 site in Egypt. Open to participants aged 18 Years to 59 Years. Per ClinicalTrials.gov, last updated 2026-10-14.
Sponsored by Ain Shams University · Not applicable, Interventional, and Other
This clinical study evaluated the trueness of two intraoral scanners in patients with acquired maxillary defects. Eight patients with unilateral maxillary defects were included. Each patient underwent direct intraoral scanning using the Medit i700 and TRIOS 3 intraoral scanners. A conventional impression was also obtained, and the resulting stone cast was digitized using a desktop scanner to serve as the reference dataset. The intraoral scan datasets were compared with the reference scan using three-dimensional analysis to assess trueness. patient-reported obturator function was also evaluated using the Obturator Functioning Scale (OFS)The study aimed to determine whether the two intraoral scanners differed in their ability to accurately record maxillary defect anatomy under clinical conditions.the study also evaluated patient-reported obturator function using the Obturator Functioning Scale (OFS)
Patients with acquired unilateral maxillary defects who fulfilled the eligibility criteria were recruited for this study. For each participant, a conventional impression of the maxillary arch and defect was obtained and poured to produce a stone master cast. The master cast was digitized using a desktop scanner, and the resulting digital model was used as the reference dataset.
Each participant was subsequently scanned intraorally using two intraoral scanning systems: Medit i700 and TRIOS 3. The scanning procedures were performed according to a standardized scanning sequence to record the remaining dentition, palatal tissues, and maxillary defect. The digital datasets obtained from both intraoral scanners were exported and compared with the reference dataset using three-dimensional surface analysis.in addition, patient-reported obturator function was assessed using the Obturator Functioning Scale (OFS) following obturator rehabilitation Trueness was assessed by measuring the three-dimensional deviation between each intraoral scan and the corresponding reference scan. Lower deviation values indicated closer agreement with the reference dataset.
The primary objective was to compare the trueness of the two intraoral scanners when recording acquired maxillary defects. Patient-reported obturator function constituted the secondary clinical outcome.
Ain Shams University is the lead sponsor of 1,932 studies on the registry; 433 are open to participants now.
Of its 33 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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Exclusion Criteria:
all participants underwent intraoral scanning using both the Medit i700 and TRIOS 3 intraoral scanners. The resulting datasets were compared with a desktop-scanned reference dataset obtained from a conventional impression and stone cast.
Device: Medit i700 · Device: TRIOS 3
All participants underwent intraoral scanning using both the Medit i700 and TRIOS 3 intraoral scanners. The resulting datasets were compared with a desktop-scanned reference dataset obtained from a conventional impression and stone cast.
All participants underwent intraoral scanning using both the Medit i700 and TRIOS 3 intraoral scanners. The resulting datasets were compared with a desktop-scanned reference dataset obtained from a conventional impression and stone cast.
Three-Dimensional accuracy (Trueness) of Intraoral Scans
Trueness will be assessed by calculating the root mean square (RMS) three-dimensional surface deviation between each intraoral scan obtained with the Medit i700 and TRIOS 3 and the corresponding desktop-scanned reference dataset. Lower RMS values indicate closer agreement with the reference dataset.
Time frame: Immediately after completion of the scanning procedures for each participant.
Patient-Reported Obturator Function
Patient-reported obturator function was assessed using the Obturator Functioning Scale (OFS).
Time frame: One month after obturator delivery
Plan to share: No — "Individual participant data will not be publicly shared because of patient confidentiality and ethical considerations."
No publications or documents are linked to this record.
Ran from Oct 2024 to primary completion in Aug 2026, 21 months.
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From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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