An interventional study of Digital impression of the mandibular edentulous arch in Edentulous Jaw, sponsored by Ain Shams University. Not yet recruiting. Per ClinicalTrials.gov, last updated 2026-08-04.
Sponsored by Ain Shams University · Not applicable, Interventional, and Health services research
the relative accuracy of different intraoral scanner types specifically for capturing the complex morphology of edentulous arches, including peripheral borders and mobile tissues, remains an area of investigation, with conflicting reports in the literature.
The purpose of this study is to compare the accuracy of different intraoral scanners with a laboratory scanner for digitizing impressions of edentulous mandible.
Completely edentulous patients will be gathered; final impressions will be taken for them using zinc oxide \& eugenol impression material then they will be scanned with intra oral and extra oral scanners for indirect digitalization.
Scans will be superimposed and compared using a software program for analysis for accuracy in the form of trueness
completely edentulous patients will be recruited.
Study procedures:
Custom trays will be fabricated and checked for extension, and then definitive impressions will be made with type-1 low fusing impression compound (Tracing sticks; Kemdent, UK) for border molding and zinc oxide eugenol impression paste (Cavex Holland B.N) for the impression. Reference markers will be placed on the impressions in anterior and posterior ridge areas.
The indirect digitalization of impressions will be made with two different Intraoral scanning devices and a laboratory scanner.
Intra oral scanners are:
For "trueness" measurements every STL file of each experimental group will be superimposed to the extra oral scan.
122 studies on the registry are indexed under Jaw, Edentulous; 20 are open to participants now.
This study's planned enrollment of 9 is below the median of 24 across 99 interventional studies indexed under Jaw, Edentulous.
Browse Jaw, Edentulous studies →Ain Shams University is the lead sponsor of 1,950 studies on the registry; 429 are open to participants now.
Of its 35 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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Exclusion Criteria:
Digital impression of the mandibular edentulous arch will be made by MEDIT i600 scanner (Medit Corp. Seoul, South Korea) followed by another digital impression of the same arch using Aoralscan scanner (Shining 3D Tech. Co., Ltd. Hangzhou, China). Both impressions will be compared to each other in terms of trueness.
Other: Digital impression of the mandibular edentulous arch
Digital impression of the mandibular edentulous arch will be made by MEDIT i600 scanner (Medit Corp. Seoul, South Korea) followed by another digital impression of the same arch using Aoralscan scanner (Shining 3D Tech. Co., Ltd. Hangzhou, China). Both impressions will be compared to each other in terms of trueness.
trueness assessment of impression techniques for mandibular edentulous arches
Assessment of trueness of Digital impression of the mandibular edentulous arch using intra oral scanner will be made by MEDIT i600 scanner (Medit Corp. Seoul, South Korea) followed by another digital impression of the same arch using Aoralscan scanner (Shining 3D Tech. Co., Ltd. Hangzhou, China). Both impressions will be compared to each other in terms of trueness in relation to desktop scanner. Root mean square of trueness in m.m will be reported.
Time frame: 3 months
No study locations are listed for this record.
Start is estimated for Jul 2026; primary completion for Oct 2026, 2 months later.
Of 58 non-industry interventional studies with no phase under Jaw, Edentulous, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 30. This study's planned 2 months is below that.
Counting every sponsor, half of 66 studies reached it within 20 months; a quarter within 12 and three quarters within 38.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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