A novel technique of impression procedure in a hemimaxillectomy patient with microstomia

Abstract

A restricted mouth opening in hemimaxillectomy patient can create a significant problem with the insertion and the removal of the obturator prosthesis. Even it poses a problem in impression making due to small oral opening. A modification of the standard impression procedure is often necessary to accomplish an acceptable impression in the fabrication of a successful prosthesis. Sectional trays are a good option for such patients. This paper describes a novel technique of impression procedure and a method of fabricating a sectional tray with the anterior and the posterior locking mechanism for a hemimaxillectomy patient with limited oral opening.

Figure 1

Intraoral view of defect.

Figure 2

Restricted mouth opening.

Figure 3

Primary impression.

Figure 4

Primary cast.

Figure 5

(a) Male button, (b) Female button, (c) Press button.

Figure 6

Custom sectional tray.

Figure 7

Male part.

Figure 8

Female part.

Figure 9

(a) and (b) Showing anterior and posterior locking mechanism.

Figure 10

Dissembled sectional tray.

Figure 11

Assembled sectional tray.

Figure 12

Dissembled impression.

Figure 13

Assembled impression.

Figure 14

Master cast.