Transpositional Flap Vetibuloplasty (Lip Switch) Medical Assignment Help

Transpositional Flap Vetibuloplasty (Lip Switch)

A lingually based flap vestibuloplasty was ‘first described by Kazanjian.24 In this procedure a mucosal flap pedicled from the alveolar ridge is elevated from ‘the’ underlying an.l sutured to the depth of the .vestibule (Fig. U-‘~~ Till’ inner portion of the lip is allowed to heal by , t:wndal y epithelialization. This ptocedure has beenmo dified, and the use of a technique transposing a linguallylingually based mucosal flap and a labially based periosteal flap (transpositional flap) has become popular.zs
. When adequate mandibular height exists, this procedure increases the anterior vestibular area, which improves denture retention and stablliry. The primary indications for the pLOcedure include adequate anterior mandibular ‘height (at least IS rnrn), inadequate facial vestibular depth
from mucosal and muscular attachments in the anterior mandible, ,and’ the presence of an adequate vestibular  depth on the lingual aspect of the mandible.  These techniques provide adequate results in many cases and generally do not require hospitalization, donor-site surgery, or prolonged periods without a denture. Disadvantages include unpredictability of the amount of relapse of the vestibular depth, scarring in the depth of

FIG, 13-38 Transpositional flap vestibuloplasty (i.e. lip switch), A, Incision is made in labial mucosa, and thin mucosal flap is dissected from underlying tissue, Sl,Jpraperiosteal dissection is also performed on anterior aspect of the mandible, B, Flap of labial mucosa is sutured to depth of vestibule, Exposed labial tissue heals by secondary lntention. C, Modification of technique by incising periosteum at crest of alveolar ridge and,suturing free periosteal edge to denuded area of labial mucosa, 0, Muco.sal flap is then sutured over denuded: bone to periosteal junction at depth of vestibule.

FIG, 13-38 Transpositional flap vestibuloplasty (i.e. lip switch), A, Incision is made in labial mucosa,
and thin mucosal flap is dissected from underlying tissue, Sl,Jpraperiosteal dissection is also performed
on anterior aspect of the mandible, B, Flap of labial mucosa is sutured to depth of vestibule, Exposed
labial tissue heals by secondary lntention. C, Modification of technique by incising periosteum at crest
of alveolar ridge and,suturing free periosteal edge to denuded area of labial mucosa, 0, Muco.sal flap
is then sutured over denuded: bone to periosteal junction at depth of vestibule.

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the vestibuleand problems with adaptation, of the  peripheral flange area of the denture to the depth of the vestibule.26,27

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