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An integrated hollow bulb obturator prosthesis with a metal framework for a soft palate defect fabricated by multiple
Ningning Liu1, Xin Wang2, Shizhu Bai3
1Researcher, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Digital Dentistry Center, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China.
Abstract:
The digital workflow to fabricate an integrated hollow bulb obturator prosthesis with a metal framework for a patient with soft palate defect is described. The framework was digitally designed with an open lattice denture base connector to facilitate the assembly of the hollow bulb obturator and printed with titanium. A functional impression of the palatopharyngeal area was made, and an integrated 3-dimensional (3D) cast was obtained by aligning the data of the functional impression to the preliminary intraoral scan data. The hollow bulb obturator and a palatal cover were designed based on the integrated 3D cast and the framework design data and printed with light-polymerizing denture base resin. The printed framework, obturator, and palatal cover were assembled and bonded without a physical cast, and the definitive prosthesis exhibited good fit, retention, and stability.
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