Speakers - 2026

Title: Application of digital simulation tooth extraction in design of full denture

Abstract

Objective: To explore the feasibility of using technician-end simulated tooth extraction technology to achieve the design and fabrication of digital complete denture in advance. Methods: The technician collected the patients oral scan data, used CAD design software to simulate the patients intraoral condition after tooth extraction, and designed the complete denture according to the simulated model after tooth extraction.

Case: The patient retained only teeth 13,23,26, and 27 in the maxilla and teeth 33 and 43 in the mandible , with poor condition of the abutment teeth. The plan was to perform extraction followed by full-mouth prosthodontic treatment. The patient requested that teeth remain in the mouth throughout the treatment. Therefore, the technician first collected digital intraoral information of the patient before extraction, imported it into CAD design software to simulate extraction, and designed the treatment denture on the model after simulated extraction, adjusting the patients occlusion. The design data were printed using 3D printing technology, and the treatment denture was completed after polishing. During the second visit after extraction, the patient wore the denture with tissue conditioner applied to the baseplate based on the actual intraoral condition, completing the treatment denture fitting.

Results: In this case, digital technology was employed to simulate the intraoral condition after tooth extraction. The design and fabrication of the prosthetic denture were completed prior to the extraction procedure. This approach enabled the patient to wear the denture post-extraction and undergo occlusal adjustment. Tissue adjusters were utilized to modify the contour of the retainer margins, protect the wound at the extraction site, and promote wound healing, thereby enhancing patient comfort.

Conclusion: Digital technology demonstrates significant efficacy in denture restoration therapy. The simulated tooth extraction technique accurately reconstructs intraoral conditions, streamlines procedural steps, and eliminates redundant scanning by technicians and repeated clinical mold-taking. Data from retained teeth also provides reference for subsequent tooth placement. This digital simulation enables immediate denture fitting post-extraction, promptly addressing patients aesthetic demands while substantially shortening treatment duration. It enhances patient comfort and satisfaction, minimizes occlusal impact on daily life, reduces repeat visits, alleviates physicians workload, and achieves efficient utilization of medical resources.