adult speech aid prosthesis

Plural

adult speech aid prostheses

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Erwachsenensprechprothese

Definition from Glossary

1: a definitive maxillofacial prosthesis which can improve speech in adult cleft palate patients either by obturating (sealing off) a palatal cleft or fistula, or occasionally by assisting an incompetent soft palate. Both mechanisms are necessary to achieve velopharyngeal competency. Editor's note: Generally this prosthesis is fabricated when no further growth is anticipated and the objective is to achieve long term use, hence, more precise materials and techniques are utilized. Occasionally such procedures are accomplished in conjunction with precision attachments in fixed dental prostheses undertaken on some or all maxillary teeth, to achieve improved esthetics—syn PROSTHETIC SPEECH APPLIANCE, SPEECH AID, SPEECH BULB

Pronunciation

a-dŭlt′ spēch ād pro˘s-thē′si˘s

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Collagen membrane

Collagen membranes are hydrophilic resorbable membranes. Xenogenic (e.g. bovine or porcine) collagen membranes are mainly used in the dental sector.

The collagen structure is differentiated…

Collagen membranes are hydrophilic resorbable membranes. Xenogenic (e.g. bovine or porcine) collagen membranes are mainly used in the dental sector.

The collagen structure is differentiated between more rigid (artificial) crosslinked and more flexible (native, natural) non-crosslinked materials. Comparative studies show that the latter exhibit lower complication rates and advantages during wound healing.

Up till now the good properties of resorbable membranes - on the one hand maintaining the barrier function and on the other hand biointegration in the form of quicker vascularisation, penetration and resorption – appeared to be mutually exclusive. According to the latest research results, there seems to be a paradigm shift taking place in this regard.

Native collagen membranes maintain their barrier function over an appropriate period: the quantity and quality of bone regeneration under a native collagen membrane are comparable to those of membranes with an extended barrier time. Integration in the tissue is, however, quicker and triggers a much lower inflammation reaction.

The range of applications for collagen membranes includes general GBR and GTR procedures in particular preventive and preimplantological stabilisation of extraction sockets (socket grafting and ridge preservation), coverage of bone defects following apicectomies, coverage of the Schneiderian membrane and the access window with lateral sinus floor elevation, coverage of augmentation materials with immediate, delayed or late implantation, with preprosthetic alveolar ridge augmentation and with periodontal surgery indications.

Although allergic reactions to collagen membranes may occur, these are rare due to the biological similarity of the tissue. With all materials of a natural origin, particularly those of animal origin, thorough pretreatment is necessary to exclude the transference of pathogens.