PMC9807968_01
(a) Frontal view, (b) Left lateral view.
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F1
The frontal and left lateral view is shown in Figure 1.
(a and b) Intraoral view.
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F2
The intraoral view is shown in Figure 2.
(a) Heat cure permanent record base, (b) Final impression, (c) Additional row of teeth added over the palatal region to provide occlusion with the lower teeth.
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F3
A heat cure permanent record base (DPI Heat Cure, Denture Base Material; Dental Products of India) was fabricated on the gypsum master cast [Figure 3a]. The Bombay Burmah Trading Corporation Ltd., Mumbai, India). The final wash impression of the defect was made with polyvinyl siloxane monophase impression material (Aquasil Ultra Monophase Regular Set, Dentsply, USA) [Figure 3b]. To overcome occlusal discrepancies, an additional row of teeth was added with a ramp over the palatal region on the right side to provide occlusion with the lower teeth [Figure 3c].
(a) Flexible thermoplastic sheet, (b) Volume of reservoir assessed using a calibrated syringe, (c) Reservoir lid in place.
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F4
Type III dental stone (Kalstone, Kalabhai Pvt., Ltd., Mumbai, India). The reservoir lid was fabricated with a 2-mm flexible thermoplastic sheet (BIOPLAST; Scheu-Dental GmbH, Iserlohn, Germany) [Figure 4a]. The reservoir volume was assessed to be 2 ml by injecting a known quantity of liquid with a calibrated syringe [Figure 4b]. The reservoir lid was snapped to close the reservoir [Figure 4c].
(a) Facial moulage, (b) Working model.
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F5
With obturator in the place, the facial defect was recorded with a complete facial moulage using irreversible hydrocolloid impression material which was reinforced with fast-setting dental plaster [Figure 5a]. The moulage was boxed and poured with dental stone (Kalstone, Kalabhai Pvt., Ltd., Mumbai, India) [Figure 5b].
(a) Two magnets embedded on the buccal surface of the obturator, (b) Counter magnets embedded on the acrylic substructure, (c) Wax pattern fabrication, (d) Try-in of wax pattern.
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F6
Two cobalt-samarium magnets (Jobmasters, Randallstown, MD, USA) with 2-mm thickness and 10-mm diameter were embedded in the acrylic substructure and their counter magnets were embedded on the buccal surface of the obturator [Figure 6a and b]. A wax pattern was sculpted on the working model using the patient's previous photographs as a reference [Figure 6c]. Adaptation of the wax pattern on the patient's face was assessed in lateral, frontal, and axial views, particularly at the margins, and necessary adjustments were accordingly made [Figure 6d].
Obturator in place.
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F7
A spectacle frame and an artificial moustache finally succeeded in masking the borders of the prosthesis [Figures 7 and 8].
Extraoral prosthesis in place.
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F8
A spectacle frame and an artificial moustache finally succeeded in masking the borders of the prosthesis [Figures 7 and 8].