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2024 ACP Annual Session
NOVEMBER 6-9, 2024 | MARCO ISLAND, FL JW MARRIOT
65
Maxillary Interim Obturator Prosthesis Fabrication Using a Digital-Analog Workflow: A Case Report
Poster Presenter
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Part of Topic
Case Presentation
Maxillary Interim Obturator Prosthesis Fabrication Using a Digital-Analog Workflow: A Case Report
Objectives
Digital dental technology has shown great promise in the prosthetic treatment of maxillofacial defects. However, limitations exist with the difficulty for intraoral scanners to accurately capture functional defect morphologies. A hybrid digital-analog workflow for the fabrication of a maxillary obturator prosthesis can be utilized.
Case History
15-year-old female
Osteosarcoma in 2017 at age 8
Previous treatment: partial maxillary resection, radiation, and chemotherapy
Planned treatment: orthodontic treatment prior to reconstruction of the maxilla, nasal cavity, and orbital floor
Workflow
1. Patient presents with existing ill- fitting obturator
2. Intraoral scans (A, B) and lab scan of existing prosthesis for duplication
3. Design duplicate prosthesis with palatal handle (C), three- dimensionally print for border molding and final impression of defect, and take lab scan of impression (D, E)
4. Build model from pour- up of impression (F)
5. Merging of all scans to allow boolean union of intraoral scan (A) with pour-up impression model (F) to build master cast (G,H)
6. Fabrication of maxillary interim obturator prosthesis using master cast (I-M)
Outcome
Before
After
Conclusions
The master cast was able to be used for fabricating a maxillary interim obturator fitting over orthodontic bonded brackets, which was delivered to the patient without requiring a soft reline of the defect.
This case illustrates how the combination of digital and analog methods can overcome some of the limitations of current digital dental technology with intraoral scanners, offering an innovative solution for the management of complex maxillofacial defects.
References