A novel technique for reference point generation to aid in intraoral scan alignment

Abstract

Composite resin dots on keratinized tissue were successful at allowing accurate merging of provisional restoration and post-preparation 3D models for the purpose of using the provisional restorations as a guide for final CLINICAL SIGNIFICANCE: Composite resin dots placed temporarily on attached tissue were successful at allowing accurate merging of the provisional restoration 3D models to the preparation 3D models for the purposes of using the provisional restorations as a guide for final restoration design and manufacturing. In this case, they allowed precise superimposition of the 3D models made in the absence of any other hard tissue reference points, resulting in the fabrication of ideal final restorations.

Model‐less digital workflow for the replication of an existing complete fixed implant‐supported prosthesis using an intraoral scanner

“…Gherlone related good clinical results when constructing all‐on‐4 CAFIPS trough an intraoral scanning workflow, and such results agree with the present case report as a passive fit was also noticed in the presented patient by clinical and radiographic analysis (Figure ). From the previous background, we can infer that the fabrication of a CAFIPs from intraoral scans is challenging as the recording of hard tissue reference points in complete‐arch cases is still not optimized in current intraoral scanners software and hardware …”

“…From the previous background, we can infer that the fabrication of a CAFIPs from intraoral scans is challenging as the recording of hard tissue reference points in complete-arch cases is still not optimized in current intraoral scanners software and hardware. 11,12 Some limitations can be associated with the presented workflow, as it did not include an interim prosthesis to check the esthetic and functional outcomes. This was only possible because the previous prosthesis presented a good overall result and was considered a trustworthy reference to be replicated.…”

“…By scanning directly intraorally, we could produce the restoration more efficiently by reducing clinical and laboratory fabrication steps; avoiding inaccuracies that can occur from impression materials and gypsum deformation; requiring less intervention along the processes; and reducing the chance of human errors . However, there are few reports of full‐arch intraoral scans for CAFIP fabrications, and one of the main reasons may be the difficulties related to record hard tissue data points in complete‐arch cases, using intraoral scanners …”

“…[8][9][10] However, there are few reports of fullarch intraoral scans for CAFIP fabrications, and one of the main reasons may be the difficulties related to record hard tissue data points in complete-arch cases, using intraoral scanners. 11,12 As digital software, hardware, and new materials keep developing, new workflow possibilities are emerging. Zirconium oxide (ZO) is one of the materials suited for implant-supported CAD/CAM rehabilitations, prepared via subtractive milling, as it offers good esthetics, biocompatibility, shade stability, low accumulation of plaque, good resistance to abrasion, and low thermal conductivity.…”

Prosthetically‐Driven Full‐Mouth Implant‐Supported Prostheses Using Guided Surgical Implant Planning with Composite Resin Markers: A Case Report

“…Clinical data regarding the accuracy of the intraoral scanners (IOS) of edentulous arches are scarce 12,13 . Previous authors have reported different techniques to facilitate intraoral digital scans of completely edentulous arches using pressure indicating paste 14 or composite resin markers adhered to keratinized oral mucosa 14–17 . However, the composite resin markers have not been used as radiopaque references for alignment purposes of patient's digital information during static computer‐aided implant planning procedures.…”