Intraoral scanning to fabricate complete dentures with functional borders: a proof-of-concept case report

Abstract

BackgroundThe utilization of intraoral scanning for manufacturing of complete dentures (CD) has been reported recently. However, functional border molding still cannot be supported digitally. A proof-of-concept trial shows two possible pathways to overcome this limitation by integrating a relining procedure into the digital workflow for CD manufacturing.Case presentationIntraoral scans and additional facial scans were performed with two various scanning systems for the rehabilitation of an edentulous male patient. The obtained raw data was aligned and used for the computer aided design (CAD) of the CD. The virtually constructed dentures were materialized in two various ways, considering rapid manufacturing and digital relining approaches in order to apply functionally molded borders.ConclusionThe use of intraoral edentulous jaws scans in combination with the digital relining procedure may allow for fabrication of CD with functional borders within a fully digital workflow.

Full Digital Workflow for the Treatment of an Edentulous Patient with Guided Surgery, Immediate Loading and 3D-Printed Hybrid Prosthesis: The BARI Technique 2.0. A Case Report

“…The patient was 57 years old and presented edentulous maxilla and mandible and was classified as ASA 1 (according to the American Society of Anesthesiologists Physical Status Classification System) as he had no significant systemic disease, and he was not taking any medication. The patient received the maxillary and the mandibular dentures according to the Computer-Aided Design-Computer Aided Manufacturing (CAD/CAM) Denture protocol (Figures 1-5) [15,16].…”

A Digital Technique to Replicate Edentulous Arches with Functional Borders and Accurate Maxillomandibular Relationship for Digital Complete Denture

“…While scanning the maxillary impression, start at the distobuccal area on one side and move towards the anterior area, followed by the soft palatal areas, and finish at the distobuccal area on the other side (Fig 2A). 4,12,13 The mandibular impression can be scanned by moving the scanner head in a slow zigzag manner, starting at the distal area on one side and following the ridge crest to the opposite side (Fig 2B). 4,12,13 Place the dentures back in the patient's mouth and ensure that they are stable.…”

“… 4,12,13 The mandibular impression can be scanned by moving the scanner head in a slow zigzag manner, starting at the distal area on one side and following the ridge crest to the opposite side (Fig 2B). 4,12,13 Place the dentures back in the patient's mouth and ensure that they are stable. Next, record the centric relation with an intraoral scanner (CS 3600; Carestream) 13 .…”

“… 4,12,13 The mandibular impression can be scanned by moving the scanner head in a slow zigzag manner, starting at the distal area on one side and following the ridge crest to the opposite side (Fig 2B). 4,12,13 …”

Combination of Digital and Conventional Workflows in the CAD/CAM-Fabrication of an Implant-Supported Overdenture

“…Nevertheless, there have been promising developments promoting a fully digital workflow in the production of complete dentures in the recent years [ 1 , 2 ]. For instance, there are workflows that use face scanners to minimise the number of appointments required until insertion of the prostheses to three, but the outcome of these workflows is not yet evidence-based in terms of accuracy and aesthetics [ 1 , 3 ].…”