iDentistry The Journal identistry_may_aug2019 | Page 19

The Journal
The patient and her parents were counselled
about the purpose, possible outcome and
surgical therapy and the benefits of use of stent
postoperatively. The patient was planned for
McIndoe vaginoplasty. It was recommended to
fabricate the hollow vaginal stent of 8×2×2.5 cm
dimensions. The patient was referred from the
Department of Gynaecology, to the Department
of Prosthodontics for the fabrication of vaginal
stent of desired dimensions. The vaginal stent is
generally fabricated in self-cure acrylic. But due
to dimensional instability and associated
residual monomer content which can elicit an
allergic reaction, it is recommended and
followed in this case to the fabricate stent using
heat cure acrylic.
Fig:1 Wax pattern fabrication
Fig:1 (b) Flasking of the wax pattern
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Fig:1 (c) Flask assembly after dewaxing
Stent Fabrication
The heat cure acrylic resin stent of
recommended dimensions was planned. A
cylinder of die stone (Kalrock, Kalabhai,
Mumbai, India) material in a shape of chalk was
fabricated to form the inner core of the stent.
The wax of the recommended size was adapted
around the cylinder (Fig 1a). This cylinder
served the purpose of making the stent hollow
so that vaginal and uterine secretion can pass
through. It was adequately sized for the
placement of a drainage tube which would
facilitate increased drainage of the fluids. The
vaginal stent so replicated in a wax model was
made slightly rough to allow for attaching split
thickness skin graft.
The whole of the wax pattern with the cylinder of
die stone inside was invested in a flask (Fig 1b).
The pattern was fabricated just upto the level of
base of the brass flask so as to allow for easy
opening of the mould created. The flask was
dewaxed and the cylinder of diestone got
attached to the plaster at the ends which
resulted in desired hollowing of the stent. The
diestone cylinder is coated with separating
alginate based media to allow for easy retrieval
of the stent (Fig 1c). The flask was packed with
the heat cure acrylic resin and was cured in the
curing unit. The vaginal stent so retrieved after
deflasking was finished but not polished to
Vol. 15
No. 2
May-Aug 2019