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Related Experiment Video

Updated: May 19, 2026

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
10:42

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Published on: January 28, 2020

Functional Rehabilitation of Mandibular Defect Using CAD/CAM System.

Fusa Maeta1, Koichiro Ogami1, Taiga Edono1

  • 1Division of General Dentistry, Chiba Dental Center, Tokyo Dental College.

The Bulletin of Tokyo Dental College
|May 17, 2026
PubMed
Summary
This summary is machine-generated.

This study details a computer-aided design and manufacturing (CAD/CAM) polycarbonate denture for a patient with severe microstomia. The innovative digital workflow improved oral function and quality of life, overcoming challenges of conventional methods.

Keywords:
CAD/CAM systemFunctional rehabilitationMandibular defectOptical impressionOral cancer

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Area of Science:

  • Dentistry
  • Prosthodontics
  • Biomaterials

Background:

  • Microstomia and trismus pose significant challenges for conventional denture fabrication.
  • Maxillofacial reconstruction patients often require specialized prosthetic solutions.
  • Polycarbonate resin offers unique properties for denture applications.

Purpose of the Study:

  • To describe the CAD/CAM fabrication of a polycarbonate denture for a patient with severe microstomia and trismus.
  • To evaluate the functional and esthetic outcomes of the CAD/CAM denture.
  • To assess the impact of the digital workflow on patient-reported outcomes and oral hygiene.

Main Methods:

  • A removable partial mandibular denture was designed and milled using a CAD/CAM system from a polycarbonate disk.
  • Specialized impression techniques were employed due to the patient's limited oral aperture.
  • The patient's oral health, masticatory efficiency, and quality of life were assessed pre- and post-insertion.

Main Results:

  • The CAD/CAM polycarbonate denture was successfully fabricated and inserted.
  • Significant improvements were observed in Oral Health Impact Profile-54 scores, masticatory efficiency, and facial scale scores.
  • The smooth surface of the polycarbonate denture minimized plaque adhesion, facilitating oral hygiene.

Conclusions:

  • CAD/CAM technology enables the fabrication of complex dentures for patients with microstomia and trismus.
  • Polycarbonate resin dentures offer benefits including improved oral hygiene and reduced risk of denture stomatitis.
  • Digital workflows provide a viable solution for challenging prosthodontic cases, enhancing patient outcomes.