Objectives: This study aims to simplify the conventional resin-on-floss splinting technique and study the precision of this modified multiimplant impression technique.
Material and Methods: Twenty-four (n=24) impressions were done for one mandibular completely edentulous model with six implants placed at the canines, first premolars and first molars. Group I (n=12) used the sectional resin-on-floss splinting technique. Group II (n=12) used the simplified tray-resin splint technique. The reference model and casts were scanned. Obtained STLs were aligned. Virtual implants on each cast were compared to reference model measuring angular and positional deviations. All variables and were compared at p value <.05.
Results: Group I had significantly lower differences in angular deviations in vertical and horizontal axes of each implant except the left first molar implant, vertically, and the left first premolar implant, horizontally. The overall angular deviations of all implants were significantly lower in group I at the vertical axis. Group I had significantly lower positional deviations in XY axes of each implant except the left first molar implant. Group I showed significantly lower values on the left canine and left first premolar implant in the Z axis. The overall positional deviations of each implant of group I were significantly lower on the left canine and right first molar implants. The overall positional deviations of all implants were significantly lower in group I at the XY axes.
Conclusions: Conventional resin-on-floss technique showed less deviation values. Values of both techniques remained within the accepted level of clinical misfit values proposed in literature.